A chloroprene rubber composition comprising the following polymers A and B in such a proportion that A is from 20 to 70 wt % and B is from 30 to 80 wt %: A: a chloroprene polymer obtained by polymerization of chloroprene containing from 0 to 50 wt % of a comonomer copolymerizable with chloroprene, said polymer having a number average molecular weight of from 500 to 20,000; and B: a chloroprene polymer obtained by polymerization of chloroprene containing from 0 to 50 wt % of a comonomer copolymer...

Rubber mixtures containing so-called "pre-crosslinked" polychloroprene give vulcanizates having an improved combination of low rolling resistance and low abrasion.

A composition comprising a blend of about 70-20 weight percent crystalline polyethylene resin and 30-80 weight percent emulsion-derived polychloroprene gel is disclosed. The blend is prepared by blending the two materials at a temperature near to or above the melting point of the polyethylene.

A chloroprene rubber composition having a high damping performance, comprising a solid chloroprene polymer and a low molecular weight chloroprene polymer having a number average molecular weight of from 500 to 50,000, obtained by polymerization in the presence of an alkylmercaptan and/or a mercaptoalcohol.

This invention relates to mixtures of polychloroprene elastomers which are distinguished by their good processibility and excellent cold resistance.

Vulcanizates of polychloroprene materials containing fluorinated polyolefin have a decreased rebound elasticity without having a significantly adverse effect on the mechanical properties.

A synthetic chloroprene rubber adhesive composition which contains carboxylated synthetic chloroprene rubber for the main ingredient thereof and further contains chlorinated polypropylene and/or a chlorinated polypropylene derivatives. The adhesive composition can strongly bond various components to polypropylene used for a speaker frame, etc. unlike conventional synthetic chloroprene rubber adhesives which have insufficient adhesion strength in this application.

A wiper blade has a wiper head for mounting a wiper bracket, a wiper lip, and a tilting web connecting the wiper head with the wiper lip, the wiper head and the tilting web being composed of a material selected from the group consisting of polychloroprene and a polymer mixture including portion of at least 60 weight percent polychloroprene and at least one another elastomere, the wiper lip at least in a part which comes in contact with a glass pane being composed of a material selected from the ...

A composition comprising a) a crosslinked copolymer of chloroprene and a diester of an unsaturated carboxylic acid and b) a benzene-solution chloroprene and a process for producing this composition.

A polychloroprene elastomer prepared by blending a toluene insoluble gel polymer, obtained by polymerizing chloroprene or a mixture of chloroprene with at least one copolymerizable monomer, with a toluene soluble sol polymer obtained by polymerizing chloroprene or a mixture of chloroprene with at least one copolymerizable monomer, wherein the cross-linking density of the elastomer is at least 2.4 .times. 10.sup.-.sup.6.