Chloroprene rubber CR232
This product is a chloroprene rubber synthesized via emulsion polymerization, using diisopropyl dithiocarbamate or dodecanethiol as a regulator and chloroprene as the monomer. It is available in two types: general-purpose and adhesive-grade. It is equivalent to DuPont's Type W from the U.S. and Japan Denka Company's M-40 chloroprene rubber.
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Product Description
This product is a chloroprene rubber synthesized via emulsion polymerization, using diisopropyl dithiocarbamate or dodecyl mercaptan as a regulator and chloroprene as the monomer. It is available in two grades: general-purpose and adhesive-grade. This product is equivalent to DuPont’s Type W from the U.S. and Japan Denka Company’s M-40 chloroprene rubber.
Product Performance
Crystallization occurs at a moderate rate, with a density of 1.23. It appears as a milky white or off-white, block-like material and exhibits excellent heat resistance and thermal stability at high temperatures.
Main uses
General-purpose: Manufactures various light-colored rubber products, such as seals, dust covers, rubber rollers, linings, dams, and outer sheaths for hoses, along with miscellaneous rubber items. Adhesive-type (special-purpose): Can be mixed with CR244 to adjust the open time.
Technical specifications
Standard to be followed: Q/CHJT.J03.03.04-2022
Comparison with Major International Brands
Japanese DENKA ARLANXEO Denka Performance Elastomer LLC（DPE） Japan's TOSOH Note CR2321 M-30 211 MM1 B-31 Mercaptan regulation CR2322 M-40 210 W B-30 CR2323 M-100 M-120 230 WHV-100 WHV Y-31 Y-30S CR2323A, CR2324A, CR2325A M-130L M-130H DCR-25 233 243 253 -- Y-30H CR2322 DCR-42A 216 -- E-33 Xanthate Regulation Technical indicators
general type
Project Data Mooney viscosity ML(1+4)100°C CR2321 CR2322 CR2323 CR2324 35–45 46-55 90-110 111-130 Mooney Scorch Timet, ≥MSt5,min 11 11 Tensile strength, ≥ MPa 12 12 Modulus at 500% Elongation, MPa 2-7 5-10 Tensile elongation at break, ≥ % 750 550 Volatile matter, ≤% 1.5 1.5 Adhesive type
Project Data Viscosity of 10% toluene solution: mPa·s CR 2323A 500–1500 CR 2324A 1501–2500 CR 2325A 2501-5000 Volatile matter mass fraction, % ≤ 1.2
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