Formulation Design of Chlorinated Rubber Coatings: Component Synergy and Performance Control

1 Basic Functions of Chlorinated Rubber Resin in the Formulation

1.1 Main Film Formation and Protective Basis

In coating formulations, chlorinated rubber resin first serves as a film-forming resin. After being dissolved in organic solvents, it forms a continuous coating film as the solvent evaporates during application, providing the coating with basic adhesion, barrier properties, protection, and fast-drying performance. In chlorinated rubber coatings, its main functions can be summarized as follows:

Formulation Function	Effect on Coating Performance
Forms a continuous coating film	Provides basic coating strength and barrier properties
Builds a thermoplastic film-forming framework	Gives the coating fast-drying, one-component, and easy-recoating characteristics
Improves substrate wetting	Supports adhesion to surfaces such as metal and concrete
Provides a basis for water and salt resistance	Reduces the migration of water, oxygen, and salts toward the substrate
Provides a basis for compounding	Facilitates use together with selected resins, plasticizers, pigments, fillers, and additives

1.2 Formulation Design Requires Multi-Component Synergy

Chlorinated rubber resin provides the basic framework of the coating film, but the final coating performance is not determined by the resin alone. A complete chlorinated rubber coating requires the combined action of resin, plasticizer, pigments and fillers, solvents, and additives.

Component	Main Function
Chlorinated rubber resin	Main film formation, adhesion, fast drying, and basic protection
Co-resin	Adjusts gloss, hardness, flexibility, adhesion, and cost
Plasticizer	Improves coating film flexibility and reduces brittleness
Pigment	Provides hiding power, color, anti-rust function, or other functions
Filler	Improves barrier properties, adjusts cost, and improves application properties
Solvent	Dissolves the resin and controls application viscosity, leveling, and drying speed
Additive	Improves dispersion, anti-settling, defoaming, rheology, and storage stability

2 Resin Combination: Independent Film Formation and Modification with Co-Resins

2.1 Used Alone as the Main Film-Forming Resin

In some fast-drying coatings, chlorinated rubber resin can be used as the main film-forming resin. In this case, the coating mainly relies on chlorinated rubber resin to form a thermoplastic protective film. This design approach has the following characteristics:

Characteristic	Formulation Significance
Clear film-forming mechanism	Film formation mainly depends on solvent evaporation
Relatively fast drying	Suitable for fast-drying coating design
Relatively convenient recoating	Solvent in the new coating can wet the surface of the old coating film
Relatively simple formulation structure	Facilitates the design of one-component systems
Clear resin characteristics	The coating film style is mainly determined by chlorinated rubber resin

2.2 Function of Co-Resins

Chlorinated rubber resin can be compounded with certain other resins to improve the shortcomings of a single-resin system. Co-resins are used to modify the overall performance of the coating film.

Performance to Be Adjusted	Function of Co-Resins
Gloss and appearance	Improves surface smoothness, gloss, and decorative effect
Flexibility	Reduces the risk of the coating film becoming too hard or cracking
Hardness	Adjusts coating film feel and early strength
Adhesion	Improves interfacial wetting and bonding to the substrate
Leveling	Improves the appearance of brushed, sprayed, or roller-applied coatings
Cost	Optimizes the economics of the resin system
Drying	Adjusts surface drying, through drying, and application window

Common co-resins may include alkyd resins, acrylic resins, ketone resins/ketone-aldehyde resins, and similar materials. Other resins, such as epoxy resins and rosin ester resins, may be used for specific modification purposes, but their solubility, compatibility, storage stability, and effects on drying and coating film performance must be carefully verified.

2.3 Key Points in Selecting Co-Resins

The following items should be carefully confirmed during selection:

Evaluation Item	Points to Confirm
Solubility	Whether the resin can dissolve stably in the target solvent system
Compatibility	Whether mixing with chlorinated rubber resin causes turbidity, phase separation, or precipitation
Effect on drying	Whether it significantly delays or accelerates surface drying or through drying
Coating film appearance	Whether it affects gloss, color, transparency, and leveling
Flexibility	Whether it improves or weakens the crack resistance of the coating film
Adhesion	Whether it supports bonding to the substrate
Storage stability	Whether thickening, settling, or precipitation occurs after heat storage or long-term storage

The ratio of chlorinated rubber resin to co-resin also needs to be determined through testing:

Change in Ratio	Possible Effect
Higher proportion of chlorinated rubber resin	Fast-drying, protective, and recoating characteristics become more prominent
Increased proportion of co-resin	Appearance, flexibility, cost, or application properties may improve
Excessive amount of co-resin	May weaken the original protective characteristics of the chlorinated rubber system
Insufficient compatibility	May cause storage instability or coating film defects

3 Plasticizers: Adjusting Flexibility and Coating Film Hardness

3.1 Function of Plasticizers in the Formulation

After chlorination modification, the flexibility of the molecular chains of chlorinated rubber resin decreases, and the coating film may become relatively hard. Plasticizers are used to improve this issue, giving the coating film better flexibility and application adaptability. The main functions of plasticizers include:

Function	Formulation Significance
Reduces coating film brittleness	Improves crack resistance
Improves flexibility	Allows the coating to accommodate slight substrate deformation
Adjusts coating film hardness	Prevents the coating film from becoming too hard
Improves film formation	Makes the coating film more continuous
Adjusts application feel	Improves brushing, roller coating, or spraying performance

Common plasticization approaches include:

Plasticization Approach	Main Function
Chlorinated paraffins	Have good compatibility with chlorine-containing resins and can improve flexibility and cost efficiency
Ester plasticizers	Improve flexibility and low-temperature adaptability, but migration and water-resistance effects should be considered
Polymeric plasticizers	Have a relatively low migration risk, but higher viscosity and cost

3.2 Key Risks in Plasticizer Selection

Improper plasticizer selection can weaken the overall performance of the coating film. The main risks include:

Risk	Possible Manifestation
Insufficient compatibility	Turbidity, precipitation, or phase separation in the paint liquid
Excessive migration	Tacky coating film, surface contamination, and reduced stain resistance
Excessive dosage	Reduced hardness, slower drying, and decreased water resistance
Volatilization or extraction	Late-stage embrittlement and cracking of the coating film
Adverse effect on dispersion	Reduced wetting of pigments and fillers and poorer storage stability

4 Pigments and Fillers: Anti-Rust Performance, Barrier Effect, and Coating Film Structure

4.1 Function of Anti-Rust Pigments

In chlorinated rubber coatings, pigments not only provide color and hiding power but can also provide anti-rust functions. Especially in metal protection systems, anti-rust pigments and the barrier effect of the resin jointly influence the protective performance of the coating. The main functions of anti-rust pigments include:

Function	Formulation Significance
Inhibits metal corrosion	Slows down the occurrence of corrosion reactions
Improves substrate protection	Works together with the barrier effect of the resin
Improves hiding power	Covers the substrate and the color of old coating layers
Adjusts coating film structure	Affects hardness, barrier properties, and application properties

When selecting anti-rust pigments, attention should be paid to their compatibility with the resin solution, dispersants, solvents, and other pigments and fillers. Poor dispersion may lead to settling, re-agglomeration, rough coating films, or unstable protective performance.

4.2 Function of Barrier Fillers

In chlorinated rubber coatings, fillers are not only used to reduce cost but also affect coating film barrier properties, application properties, and mechanical performance. Proper use of lamellar or inert fillers can increase the migration path of water, oxygen, and salts within the coating film, thereby improving the barrier effect of the coating.

Filler Function	Effect on the Coating
Increases the barrier path	Reduces the migration rate of media toward the substrate
Adjusts application viscosity	Improves sag resistance and application film thickness
Improves film structure	Enhances coating film integrity and hardness
Controls gloss	Adjusts the surface effect
Reduces cost	Optimizes formulation economics

4.3 Control of Pigment and Filler Volume Concentration

The volume concentration of pigments and fillers directly affects the coating film structure. If the pigment and filler content is too low, hiding power, barrier properties, or anti-rust function may be insufficient. If the content is too high, the resin may not be able to fully encapsulate the pigments and fillers, and the coating film may become loose, with increased water absorption and decreased adhesion and flexibility. The following factors should be considered in formulation design:

Evaluation Item	Effect
Wetting of pigments and fillers by the resin	Affects dispersion efficiency and coating film uniformity
Pigment and filler volume concentration	Affects porosity, hiding power, and barrier properties
Particle size of pigments and fillers	Affects fineness, settling, and surface roughness
Morphology of pigments and fillers	Affects barrier path and rheological behavior
Surface treatment of pigments and fillers	Affects dispersion and storage stability

5 Solvent System: Solubility, Application, and Drying Control

5.1 Basic Functions of Solvents

Chlorinated rubber resin is typically used in solvent-based systems, and solvent design has a significant influence on formulation performance. The functions of solvents in the formulation include:

Function	Formulation Significance
Dissolves the resin	Forms a uniform and stable resin solution
Adjusts application viscosity	Adapts the coating to brushing, spraying, roller coating, and other application methods
Controls drying speed	Affects surface drying, through drying, and recoating interval
Improves leveling	Affects surface smoothness of the coating film
Maintains storage stability	Prevents resin precipitation, turbidity, or phase separation
Affects environmental protection and safety	Related to VOCs, volatile organic compounds, and application safety

5.2 Balance Between Solvency and Evaporation Rate

The solvent system of a chlorinated rubber coating should not pursue only strong solvency, nor should it pursue only rapid evaporation. A reasonable solvent system needs to meet the following requirements at the same time: ① complete dissolution of the resin; ② a clear and stable resin solution; ③ suitable application viscosity; ④ surface drying speed that meets requirements; ⑤ smooth release of internal solvent; ⑥ good coating film leveling and appearance; and ⑦ no precipitation or phase separation during storage.

The evaporation rate of solvents has a clear effect on the condition of the coating film:

Solvent Evaporation Condition	Possible Effect
Evaporation too fast	Insufficient leveling, dry spray, rough surface, and pinholes
Evaporation too slow	Prolonged drying, soft coating film, dust pickup, and slow development of early performance
Reasonable evaporation gradient	Helps balance leveling, surface drying, through drying, and coating film integrity

Therefore, chlorinated rubber coatings usually require a combination of fast-, medium-, and slow-evaporating solvents to keep solubility, application, leveling, and drying speed in proper balance.

5.3 Effect of Solvents on Recoating and Coating Film Appearance

Chlorinated rubber coating films are thermoplastic films. The solvent in a new coating layer can wet and slightly swell the surface of the old coating film. Appropriate wetting helps intercoat adhesion, but excessively strong solvency or excessive wet film thickness may cause over-softening of the old coating film surface. Solvent design needs to consider the following:

Formulation Objective	Control Focus
Improve intercoat adhesion	Maintain appropriate solvent wetting ability
Avoid over-softening of the old film	Control the proportion of strong solvents and the application thickness
Maintain leveling	Combine with suitable medium- and slow-evaporating solvents
Reduce pinholes	Avoid overly rapid surface sealing
Ensure through drying	Promote the release of internal solvent

6 Additive System: Dispersion, Anti-Settling, Defoaming, and Rheology Control

6.1 Dispersants and Wetting Agents

When chlorinated rubber coatings contain pigments and fillers, dispersants and wetting agents should be used properly to improve the dispersion efficiency and storage stability of powders in the resin solution. The functions of dispersants and wetting agents include:

Function	Formulation Significance
Improves wetting of pigments and fillers	Helps the resin solution encapsulate powder surfaces
Improves dispersion efficiency	Shortens grinding time and improves fineness
Reduces the risk of re-agglomeration	Reduces particle re-aggregation after storage
Improves storage stability	Reduces settling, flocculation, and abnormal viscosity changes

When selecting dispersants, their compatibility with chlorinated rubber resin, the solvent system, pigments and fillers, and co-resins should be carefully confirmed. Improper additive selection may lead to foam, craters, haze, reduced adhesion, or storage instability.

6.2 Anti-Settling Agents and Rheology Additives

When chlorinated rubber coatings contain a relatively high amount of pigments and fillers, anti-settling agents and rheology additives are needed to control storage stability and application behavior. The main functions of anti-settling agents and rheology additives are:

Function	Formulation Significance
Prevents settling of pigments and fillers	Improves storage stability
Improves sag resistance	Supports application at higher film thickness
Adjusts thixotropy	Allows easy flow during application and anti-settling during standing
Improves brushing and roller-coating feel	Enhances application adaptability
Controls leveling	Avoids excessive flow or surface unevenness

Rheology design should avoid two extremes:

Rheological Condition	Possible Problem
Insufficient thixotropy	Settling, sagging, and difficulty in thick-film application
Excessive thixotropy	Poor leveling, obvious brush marks, and poor spray atomization

Anti-settling and rheology design should also consider the density of pigments and fillers, resin solution viscosity, solvent evaporation rate, and application method.

6.3 Defoamers and Surface Additives

Solvent-based chlorinated rubber coatings may introduce air bubbles during dispersion, paint adjustment, and application. Surface defects may also occur due to uneven surface tension. Defoamers and surface additives are mainly used to improve the following:

Problem	Adjustment Direction
Bubbles	Use appropriate defoamers or deaerators
Pinholes	Control foam release and solvent evaporation rate
Craters	Adjust surface tension and additive compatibility
Orange peel	Improve leveling and the solvent evaporation gradient
Floating or color separation	Improve pigment dispersion and surface flow uniformity

Additives are not better simply because more are used. Excessive defoamer or surface additive may cause craters, recoating defects, reduced adhesion, or coating film contamination. Therefore, additive dosage should be determined through small-scale testing and evaluated together with storage stability, application behavior, and coating film appearance.

7 Formulation Verification and Common Adjustment Directions

7.1 Formulation Verification Items

After the preliminary design of a chlorinated rubber coating formulation is completed, verification should be carried out at three levels: resin solution, finished paint, and coating film.

Verification Level	Main Items	Evaluation Purpose
Resin solution verification	Appearance, viscosity, dissolution speed, storage stability	Determines whether the resin and solvent system are stable
Finished paint verification	Fineness, viscosity, dispersion state, filterability, heat-storage stability	Determines whether the pigments/fillers, additives, and resin system are coordinated
Application verification	Brushing, spraying, roller coating, leveling, sagging	Determines application adaptability
Coating film verification	Drying, appearance, adhesion, hardness, flexibility, water resistance	Determines basic coating film performance
Recoating verification	Intercoat adhesion, surface softening, appearance changes	Determines whether the interaction between solvent and coating layers is appropriate

7.2 Common Problems and Adjustment Directions

Common problems in chlorinated rubber coatings can be assessed based on the balance among formulation components.

Common Problem	Possible Related Factors	Adjustment Direction
Turbidity or precipitation in the resin solution	Insufficient compatibility among co-resin, solvent, and plasticizer	Adjust resin combination, solvent composition, or plasticizer type
Coating film is too brittle	High proportion of chlorinated rubber, insufficient plasticization, excessive filler	Adjust co-resin, plasticizer, and pigment/filler volume concentration
Poor leveling or dry spray	Solvent evaporation too fast, high application viscosity, excessive rheology	Adjust solvent evaporation gradient, application viscosity, and rheology system
Softening during recoating	Strong solvency of the new coating solvent, excessive wet film thickness, insufficient drying of the old film	Control the proportion of strong solvents, application thickness, and recoating interval
Settling or caking	High pigment/filler density, insufficient dispersion, weak anti-settling system	Optimize dispersion, anti-settling agents, and rheological structure
Foam or pinholes	Air entrainment during dispersion, insufficient defoaming, uneven solvent release	Adjust defoamer, dispersion process, and solvent evaporation rate
Craters or surface defects	Mismatched surface additive, contamination, or poor compatibility	Adjust surface additives and check system cleanliness

8 Summary: The Core of Chlorinated Rubber Coating Formulation Is Balance

Chlorinated rubber resin serves as the main film-forming component and basic protective component in coating formulations, but the complete performance of the coating comes from multi-component synergy. The functions of each component are summarized as follows:

Formulation Element	Core Function	Design Focus
Chlorinated rubber resin	Establishes the basis for fast drying, protection, adhesion, and recoating	Select suitable viscosity and solubility
Co-resin	Adjusts gloss, flexibility, hardness, adhesion, and cost	Focus on verifying compatibility and storage stability
Plasticizer	Improves flexibility and reduces brittleness	Control migration, compatibility, and dosage
Anti-rust pigment	Improves metal protection capability	Ensure dispersion and system stability
Barrier filler	Extends the migration path of media and improves barrier properties	Control volume concentration and resin encapsulation
Solvent system	Controls dissolution, application viscosity, leveling, and drying	Balance solvency and evaporation rate
Additive system	Improves dispersion, anti-settling, defoaming, rheology, and storage stability	Avoid additive incompatibility and excessive dosage

9. Product Tables Related to Chlorinated Rubber Coating Formulation Design

The following products are representative materials for formulation research and performance screening of chlorinated rubber coatings. Before they are used in commercial formulations, they should be verified in combination with the target resin grade, solvent system, application conditions, regulatory requirements, and restricted-substance lists.

Table 1 Resin Combination and Plasticization/Flexibility Adjustment Products

Category	CAS No.	Aladdin Cat. No.	Name	Specification or Purity	Product Features and Applications
Co-resin	9011-14-7	P141444	Poly(methyl methacrylate) (PMMA)	General-purpose injection grade	Can be used for exploratory research on chlorinated rubber/acrylic resin combinations, compatibility, and film-forming structure. Before use in actual coating formulations, solubility, viscosity, compatibility, and storage stability should be verified.
Plasticizer	117-81-7	D109646	Di(2-ethylhexyl) phthalate (DEHP, commonly known as DOP)	Chemically pure (CP), ≥98%	Can be used in comparative experiments on flexibility, hardness, and plasticization effects in chlorinated rubber coating films. Formulation applications require evaluation of target-market regulations, restricted-substance lists, and migration risks.
Plasticizer	8013-07-8	E107074	Epoxidized soybean oil (ESO)	Chemically pure (CP)	Can be used for research on flexibility adjustment, plasticizer compatibility, and coating film stability in chlorinated rubber systems.
Chlorinated plasticizer	63449-39-8	C301619	Chlorinated paraffin	Chlorine content: 58%	Can be used for research on plasticization, flexibility adjustment, and water- and salt-resistant formulations in chlorine-containing resin systems. Before use, carbon-chain composition, regulatory compliance, thermal stability, migration behavior, and effects on water resistance should be confirmed.
Plasticizer	84-74-2	D103473	Dibutyl phthalate	Moligand™, Standard for GC, ≥99.5% (GC)	Can be used in comparative experiments on plasticization effects, migration tendency, and formulation compatibility in chlorinated rubber coating films. Formulation applications require evaluation of target-market regulations, restricted-substance lists, and migration risks.
Plasticizer	103-23-1	B103070	Bis(2-ethylhexyl) adipate (DOA)	≥99%	Can be used for research on flexibility, low-temperature bending performance, and brittleness adjustment in chlorinated rubber coatings.
Plasticizer	3319-31-1	T107253	Trioctyl trimellitate (TOTM)	≥97%	Can be used for research on migration-resistant plasticization, hardness balance, and coating film durability in chlorinated rubber coatings.
Plasticizer	6422-86-2	D107571	Dioctyl terephthalate (DOTP)	≥97%	Can be used for plasticizer replacement studies, flexibility adjustment, and coating film mechanical performance testing in chlorinated rubber systems.

Table 2 Anti-Rust Pigments, Coloring Pigments, and Functional Pigments

Category	CAS No.	Aladdin Cat. No.	Name	Specification or Purity	Product Features and Applications
Anti-corrosive coloring pigment	1309-37-1	I431738	Iron(III) oxide	Nanopowder, <50 nm particle size (BET)	Can be used in experiments on coloring, hiding power, and coating film barrier performance in chlorinated rubber anti-corrosion coatings. If used as a component in an anti-corrosion system, it should be evaluated in synergy with anti-rust pigments such as zinc phosphate, aluminum tripolyphosphate, and zinc molybdate.
Anti-rust pigment	13939-25-8	A302801	Aluminum tripolyphosphate	P₂O₅ content: 60–70%	Can be used for screening chrome-free anti-rust pigments and studying metal substrate protection in chlorinated rubber anti-corrosion coatings.
Yellow pigment	51274-00-1	P193670	Yellow iron oxide	Fe₂O₃ ≥85%	Can be used for yellow coloring, industrial topcoats, and appearance design of protective coatings in chlorinated rubber coatings.
Anti-rust pigment	7779-90-0	Z112909	Zinc phosphate hydrate	AR, ≥99%	Can be used for metal anti-rust protection, salt spray testing, and pigment synergy research in chlorinated rubber anti-corrosion primers.
Black functional pigment	1333-86-4	C431911	Carbon, mesoporous	≥99.95% metals basis, average pore diameter 100 ± 10 Å (typical)	Can be used for black coloring, conductive filling, and coating film microstructure research in chlorinated rubber coatings.
Metal protective pigment	7440-66-6	Z683800	Zinc powder (regulated explosive precursor chemical)	≥99.9% metals basis, 600 mesh	Can be used for research on zinc-rich anti-corrosion systems, metal protection mechanisms, and chlorinated rubber/zinc powder composite protective coatings.
Anti-rust pigment	13767-32-3	Z100955	Zinc molybdate	≥99.9% metals basis	Can be used for screening corrosion-inhibiting pigments, developing chrome-free anti-rust systems, and testing salt spray performance in chlorinated rubber anti-corrosion coatings.
Metallic pigment	7429-90-5	A293631	Aluminum powder (regulated explosive precursor chemical)	≥99.8%, spherical, D50: 9–11 μm	Can be used for research on chlorinated rubber aluminum-pigmented protective coatings, barrier enhancement, and metallic-appearance coatings.
White functional pigment	13463-67-7	T104945	Nano titanium dioxide	≥99.8% metals basis, 100 nm, rutile, lipophilic	Can be used for research on white chlorinated rubber coatings, hiding power, weather-resistant pigments, and surface-modified coatings.
Active pigment	1314-13-2	Z742346	Zinc oxide	≥99.5%	Can be used for research on protective pigments, auxiliary antibacterial functions, and pigment compatibility in chlorinated rubber coatings.

Table 3 Fillers, Barrier Materials, and Rheology Control Products

Category	CAS No.	Aladdin Cat. No.	Name	Specification or Purity	Product Features and Applications
Extender filler	1332-58-7	K299132	Kaolin	Filler grade, sedimentation volume ≥3 mL/g	Can be used for extender filling, application property adjustment, and coating film compactness research in chlorinated rubber coatings.
Lamellar barrier filler	12001-26-2	P580753	Phlogopite	Industrial grade, 200 mesh	Can be used for lamellar barrier reinforcement, extension of media migration pathways, and coating film structure design in chlorinated rubber protective coatings.
High-density filler	7727-43-7	B112376	Barium sulfate	PrimorTrace™, ≥99.99% metals basis	Can be used for filling, density adjustment, media-resistant coating films, and high-cleanliness formulation research in chlorinated rubber coatings.
Anti-settling rheology additive	1302-78-9	B102861	Bentonite	Bentone SD-2, suitable for medium- to high-polarity solvents	Can be used for anti-settling, thixotropy adjustment, and storage stability research in solvent-based chlorinated rubber coatings.
Talc filler	14807-96-6	T109494	Talc powder	800 mesh	Can be used for filling, leveling adjustment, coating film feel, and barrier performance research in chlorinated rubber coatings.
Extender filler	471-34-1	C432736	Calcium carbonate	≥99.95% metals basis	Can be used for cost adjustment, extender filling, and pigment/filler volume concentration experiments in chlorinated rubber coatings.
Inorganic filler	7631-86-9	S104604	Silicon dioxide	≥99.9% metals basis	Can be used for matting, thixotropy, wear resistance, and coating film microstructure research in chlorinated rubber coatings.
Siliceous filler	14808-60-7	S131652	Silica powder	≥98.5% metals basis, spherical, 2.5 μm	Can be used for research on hardness, wear resistance, filling compactness, and floor coatings in chlorinated rubber coatings.

Table 4 Solvent System and Film-Formation Adjustment Products

Category	CAS No.	Aladdin Cat. No.	Name	Specification or Purity	Product Features and Applications
Ester solvent	141-78-6	E119698	Ethyl acetate	Anhydrous, ≥99.8%	Can be used for research on chlorinated rubber resin solubility, fast-drying film formation, and solvent evaporation gradients.
Aromatic hydrocarbon solvent	108-88-3	T399633	Toluene (controlled precursor chemical)	Anhydrous, ≥99.8%	Can be used for chlorinated rubber resin solution preparation, viscosity testing, solubility evaluation, and film-formation experiments.
Ester solvent	123-86-4	B119685	Butyl acetate	Anhydrous, ≥99%	Can be used for research on evaporation-rate adjustment, leveling control, and application open time in chlorinated rubber coatings.
Ketone solvent	78-93-3	B1506282	Methyl ethyl ketone (controlled precursor chemical)	AR, ≥99%	Can be used for experiments on rapid dissolution of chlorinated rubber resin, fast-drying coatings, and the effect of recoating solvents.
Ketone solvent	108-10-1	M108740	Methyl isobutyl ketone	AR, ≥99.5%	Can be used for adjusting solvency, evaporation rate, and leveling performance in chlorinated rubber coatings.
Ketone solvent	108-94-1	C116451	Cyclohexanone	≥99.5% (GC)	Can be used for chlorinated rubber resin dissolution, slow-evaporating component design, and research on the through-drying process of coating films.
Glycol ether ester solvent	108-65-6	P295138	Propylene glycol monomethyl ether acetate (PMA)	≥99.5%	Can be used for solvent evaporation balance, leveling improvement, and application window adjustment in chlorinated rubber coatings.
Ketone solvent	67-64-1	A399767	Acetone (controlled precursor chemical)	≥99.5%	Can be used for chlorinated rubber resin solubility screening, fast-evaporation behavior, and fast-drying film-formation research. In actual formulations, compatibility with the resin grade, clarity of dissolution, leveling, pinhole formation, and storage stability should be verified.
Aromatic hydrocarbon solvent	1330-20-7	X775162	Xylene	≥97% (mixture of isomers)	Can be used for chlorinated rubber resin dissolution, coating dilution, viscosity adjustment for brushing and spraying, and film-formation research.

Note: The above products are representative Aladdin products. More product specifications can be searched on the Aladdin website by “product name/CAS/catalog number.”

References

[1] Covestro. Chlorinated Rubber for Corrosion Protection Coatings and Contact Adhesives. Covestro Solutions Center.

[2] Covestro. Pergut® S 40 Product Information. Covestro Solutions Center.

[3] Galaxy International FZC. Chlorinated Rubber.

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