The appearance is milky white, beige or light brown flake or block, is chloroprene (that is, 2-chloro -1,3-butadiene) as the main raw materials for the formation of α-polymerization elastomer. The solubility parameters of chloroprene rubber accounted for δ=9.2~9.41. Soluble in toluene, xylene, two chloro ethane, tri-vanadium ethylene, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in N-hexane, solvent gasoline, but can be dissolved in the appropriate proportion of good and bad solvents and solvents and solvents or bad solvent and other mixed solvents, in vegetable oil and mineral oil swelling and insoluble.
Have good physical and mechanical properties, oil resistance, heat resistance, flame retardant, sun resistance, ozone, acid and alkali resistance, chemical reagents. The disadvantage is poor cold resistance and storage stability. With high tensile strength, elongation and reversible crystallization, good adhesion. Anti-Aging, heat resistance. Excellent oil resistance and chemical corrosion resistance. Weathering resistance and ozone aging are second only to ethylene propylene rubber and butyl rubber. Heat resistance and NBR equivalent, decomposition temperature 230~260℃, short term can be 120~150℃, in 80~100℃ can be used for a long time, with a certain degree of flame retardant. Oil resistance is second only to NBR. Resistance to inorganic acids, alkali corrosion is good. Cold resistance is slightly poor, electrical insulation is poor. Raw rubber storage stability is poor, will produce "self-sulfur" phenomenon, Mooney viscosity increased, raw rubber hardening. Foreign brands have, AD 130 (the United States), A-90 (Japan), 320 (Germany), ma40s (France).