Polymethylene polyphenyl polyisocyanate
Polymethylene Polyphenyl Polyisocyanate CAS 9016-87-9


Polychloroprene paramete

CAS No.: 9010-98-4
MF: (C4H5Cl)n
Place of Origin: Shandong, China
Brand Name: RICHON
Purity: 100%
Appearance: white or light yellow chips
monomer: Chloroprene
package: 25kgs
EINECS No.: 204-818-0
Type: Synthetic Resin and Plastics, Synthetic Rubbers
Model Number: CR 237T
Color: white or light yellow
Certificate: ISO9001
Keywords: poly
Application: basic raw material of preparing adhesive cements


Molecular weight 100,000~600,000
Density 1.23 g/mL at 25 °C(lit.)
Appearance White or beige chips
Specific gravity 1.23
Softening temperature (℃) 80
Glass transition temperature (℃) -38 to -40
Specific heat (KJ/kg·℃) 2.18
Volume resistance (Ω•cm) 109 ~1012
Regulator: Mercaptan Crystallization rate: fast
Brookfield solution viscosity (mpa.s, 10% toluene solution at 25℃) 900-1500
Mass fraction of volatiles (wt.%) ≤1.3
Mass fraction of ash (wt.%) ≤1.0

Polychloroprene Definition

Polychloroprene (CA), also known as neoprene, is a high-performance, multi-purpose synthetic rubber. It has a milky white to beige or light brown flake or lump appearance, is free of mechanical impurities other than talc, and has no burnt particles.

It exhibits good chemical stability in practical applications and remains flexible over a wide temperature range. For example, high tensile strength, heat resistance, light resistance, aging resistance, and oil resistance are better than natural rubber and butyl rubber.

Polychloroprene is, therefore, widely used in weather-resistant products, adhesive shoe soles, coatings, and rocket fuel.


Polychloroprene is used in a wide range of applications, mainly for wire and cable sheathing, hoses, oil-resistant rubber products, heat-resistant conveyor belts, printing sticks, rubber dams, construction seals, highway caulking sealants, bridge bearings, oilfield wire waterproof caps, flame-retardant rubber products, various sealing ring gaskets, and chemical equipment anti-corrosion linings.

Applications of different types of polychloroprene.

Type CR122 polychloroprene can manufacture rubber products such as electric wires, cables, oil-resistant rubber sheets, hoses, conveyor belts, transmission belts, and rubber sealing materials. In addition, polychloroprene type CR122 is a contaminated general-purpose polychloroprene, which is particularly suitable for producing colored or light-colored rubber products.

Type CR232 polychloroprene can produce oil-resistant hose rubber, cable sheathing, rubber seals, etc. It is also widely used in the manufacture of adhesives.

Type CR2441 2442 polychloroprene is the raw material for producing adhesives. Its preparations bond rubber, leather, wood, metal, and other materials.

Type CR321 322 polychloroprene is widely used in the manufacture of all kinds of cables, neoprene wires, standard and oil-resistant hoses, rubber sheets, wind deflectors, all kinds of conveyor belts, conveyor belts, tent cloth, rain cloth, oil-resistant rubber boots, all kinds of rubber seals, agricultural capsule air mats, lifeboats, etc.

Type CR322 is also suitable for all kinds of colored or light-colored products.

Polychloroprene is a general-purpose and special rubber for manufacturing rubber products such as transport belts, hoses, printing rollers, cables, and aircraft fuel tanks.

It has been developed for new uses and applications in waterproofing materials, sealing materials, adhesives, marine development, health care, energy development, and people's lives.

Chemical Properties and Performance

Polychloroprene is available in the market as milky white to beige or light brown flakes or lumps. It is soluble in toluene, xylene, ethylene dichloride, and ethylene trivanadium, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, and cyclohexane and insoluble in hexane and solvent gasoline.

Properties of the different types of polychloroprene.

Type CR122 polychloroprene is beige or light brown flakes or lumps, does not contain mechanical impurities other than talc, and has no burnt particles.

It has good physical and mechanical properties, resistance to sunlight and ozone aging, weather resistance, chemical resistance, oil resistance, and non-flammable and electrical properties.

Type CR232 polychloroprene is a beige flake or lump, free of mechanical substances other than talc and free of burnt particles. It has excellent storage stability, processing properties, and safety.

Its products are resistant to sunlight, ozone aging, oil and chemical reagents, and prolonged combustion, in addition to good heat resistance and low compression deformation. However, the vulcanization speed is slow and needs to be solved by adjusting the vulcanization system.

Type CR2441 2442 polychloroprene is a milky white to light brown lump, free from mechanical impurities other than talc. It has high crystallization speed, strong cohesion, high bonding strength, and excellent resistance to ozone, weathering, grease, and non-flammable properties.

Type CR321 322 polychloroprene is generally in the form of beige flakes or lumps, free of mechanical impurities other than talc and burnt particles. It has good physical and mechanical properties and is resistant to sunlight and ozone aging, weathering, chemical reagents, and oil; non-flammable, airtight, and resistant to bending.

Electrical insulation, its tear strength is more excellent than type CR121. The product has good processability, is easy to plasticize, mix and extrude, has a smooth surface, and has good appearance quality. In addition, it has good processing safety.

Advantages of Polychloroprene

Polychloroprene has high tensile strength, elongation, and reversible crystallinity with good adhesive properties. Aging and heat resistant. Excellent resistance to oil and chemical corrosion. Weathering and ozone aging resistance are second only to ethylene propylene rubber and butyl rubber.

Heat resistance is comparable to NBR, with a decomposition temperature of 230-260°C, short-term resistance of 120-150°C, long-term use at 80-100°C, and a certain degree of flame retardancy. Oil resistance is second only to NBR. Good corrosion resistance to inorganic acids and alkalis.

The cold resistance is slightly worse, and the electrical insulation is not good. The storage stability of the raw rubber is poor, and the phenomenon of "self-sulphurization" can occur, with an increase in the viscosity of the Menny and a hardening of the raw rubber.


Q1: Can I get some samples?
A:   Yes, we can supply the free sample, but the shipping cost be paid by customers.
Q2:  How to start orders or make payments?
A :  PI will be sent first after confirmation of order,enclosed our bank information.Payment  by  T/T, Western Union LC,Alibaba trade assurance ,Moneygram.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: How about delivery leadtime?
A :  Delivery lead time: About 3-5 days after payment confirmed.(Chinese holiday not included)
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: How to contact us ?
A :  You can chat with us by Trademanager,MSN&Skype Online. You can choose your interested products and send inquiry to us. You can dial our telephone directly, you will get our reply. Send Email to us.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Polychloroprene from Look Chemical is sold in solid rubber or latex form and is used in various applications.

As an experienced manufacturer and supplier, we are committed to producing high-quality products. First-class production facilities and production lines guarantee a stable supply.

We currently have different types of polychloroprene in our production line, and if your market requires special specifications for this product, we can produce it on request.

If you need this product, please get in touch with our company's sales staff, and we will provide you with a solution quickly.



H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H315: Causes skin irritation [Warning Skin corrosion/irritation]

H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H332: Harmful if inhaled [Warning Acute toxicity, inhalation]

H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

H350: May cause cancer [Danger Carcinogenicity]

H373 **: Causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]


Logistics transportation methods can be divided into various ways according to the different transportation means.

payment method:TT、LC、WU、Alibaba

Packing Detail

1.100g/500g/1kg/5kg/10kg/25kg/200kg or as your special request.

Delivery Detail

within 5 days when get the payment .

Polychloroprene picture

Packaging and shipping

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