Chloroprene Rubber (CR) - Quality Synthetic Rubber from Reliable China Suppliers and Factory for Various Applications
Chloroprene Rubber, commonly known as Neoprene, is a high-performance synthetic rubber produced through the α-polymerization of chloroprene (2-chloro-1,3-butadiene). This versatile material is widely utilized by manufacturers in China, making it a popular choice among suppliers for applications in anti-weathering products, viscose soles, coatings, and even rocket fuel, Neoprene appears in various forms, including milky white, beige, or light brown flakes or blocks. As an essential elastomer in the synthetic rubber industry, it boasts excellent physical and mechanical properties such as oil resistance, heat resistance, flame resistance, and resistance to sunlight, ozone, acids, and alkalis. However, it's important to note that it has limitations, including poor cold resistance and storage stability, As a leading factory in the production of Chloroprene Rubber, we are committed to providing high-quality products that meet industry standards and customer demands. Discover the advantages of Neoprene for your applications today!
Chloroprene Rubber is a synthetic rubber produced by α-polymerization of chloroprene (i.e. 2-chloro-1,3-butadiene) as the main raw material. It is widely used in anti-weathering products, viscose soles, coatings, and rocket fuel.
Appearance & Nature: Appearing as milky white, beige or light brown flakes or blocks, Neoprene is an elastomer & important variety of synthetic rubber.
Key Advantages: It has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical reagent resistance.
Disadvantages: The disadvantage is poor cold resistance and storage stability.
Neoprene has high tensile strength, elongation, reversible crystallinity and good adhesion. Resistant to aging and heat. Excellent oil and chemical resistance. Weather resistance and ozone aging resistance are second only to ethylene propylene rubber and butyl rubber. The heat resistance is equivalent to that of nitrile rubber, with a decomposition temperature of 230 to 260°C, short-term resistance to 120 to 150°C, and long-term use at 80 to 100°C. It has certain flame retardancy. Oil resistance is second only to nitrile rubber. Good resistance to inorganic acid and alkali corrosion.
The solubility parameter of chloroprene rubber accounts for δ=9.2~9.41. Soluble in toluene, xylene, dichloroethane, trivanadium, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in n-hexane, solvent gasoline, but soluble in appropriate proportions of good solvents and a mixed solvent composed of a poor solvent and a non-solvent or a poor solvent and a non-solvent, which swells in vegetable oil and mineral oil without dissolving.
Technical Specifications
Item:
CR240
CR241
CR242
CR243
CR244
CR244A
CR244B
CR231
CR232
CR233
CR281
CR282
Viscosity mpa.s (25℃, 5% Xylene solution)
13-24
25-34
35-53
54-75
76-115
116-140
≥ 140
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Viscosity mpa.s (25℃, 10% Xylene solution)
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500-1500
1500-2500
2500-5000
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Viscosity mpa.s (25℃, 15% Xylene solution)
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1000-3000
3000-6000
Application
Adhesive, Adhesive with higher tack; Adjust the viscosity, improve the initial adhesion
Goods with highly loading, adhesive, conveyor belts, hoses, rubber seals, some other hard rubber product.
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Substitute
Japan Denka A series; Dupont Neoprene series; Lanxess Baypren; Tosoh Skyprene
Product Application
Hoses
Hoses for high pressure and ultra-high pressure, medium pressure and low pressure, Oil and fuel hoses, Brake hoses, Hoses for use in the petroleum industry
Cables and wires
Rubber-sheathed flexible cables, Trailing cables, Welding cables, Flat flexible power and control cables, Flat flexible lighting cables, cable sheathing
Conveyer and transmission belts
Power transmission belts for the automotive and general industry, Conveyer belts with steel cord and textile reinforcement for industries
Molded parts
Bellows and dust caps / Elbows / Rubber Seals / Spring elements / Dampers and bearings / Windshield wiper blades
Adhesives Raw Material
Can be raw material for adhesive production, used for bonding metal, wood, rubber, leather, fiber, cement products and other materials.
Sealing strips
High-performance sealing strips for diverse industrial and automotive applications.
Graft-copolymerization
It can be graft-copolymerized with reactive monomers such as methyl methacrylate (MMA) and acrylic acid to improve the bonding performance of neoprene adhesives to synthetic materials such as PVC, PU, and EVA.
Frequently Asked Questions
What is Chloroprene Rubber (Neoprene) and how is it produced?
Chloroprene Rubber (commonly known as Neoprene) is an elastomer and synthetic rubber produced by the α-polymerization of chloroprene (2-chloro-1,3-butadiene) as the main raw material.
What are the primary physical and chemical resistances of Neoprene?
Neoprene provides good physical and mechanical properties, including excellent resistance to oil, heat, flame, sunlight, ozone, aging, and inorganic acid/alkali corrosion.
What is the temperature resistance range of Chloroprene Rubber?
It features a decomposition temperature of 230 to 260°C, short-term resistance to 120 to 150°C, and is suitable for long-term continuous use at temperatures ranging from 80 to 100°C.
What are the main solvent solubilities of Chloroprene Rubber?
Chloroprene Rubber is soluble in toluene, xylene, and dichloroethane. It is slightly soluble in acetone, methyl ethyl ketone, and ethyl acetate, but completely insoluble in n-hexane and gasoline.
Which international brands and grades can these Chloroprene Rubber products substitute?
These grades can serve as direct substitutes for Japan Denka A series, Dupont Neoprene series, Lanxess Baypren, and Tosoh Skyprene series.
What are the limitations or disadvantages of Chloroprene Rubber?
The primary disadvantages of Chloroprene Rubber are its relatively poor cold resistance and its limited storage stability.
