Elastic molded body comprising a cell structure and process for

Details Elastic molded body comprising a cell structure and process for Elastic molded body comprising a cell structure and process for

1982-06-09

1984-02-07

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521137, 525125, 525129, C08J 932

Patent

active

044304480

ABSTRACT:
An elastic molded body comprising a cell structure consists of an elastic synthetic plastics material produced by a polyaddition reaction between a liquid diisocyanate or polyisocyanate and a reactant containing at least 18 percent by weight polybutadiene. Elastic hollow microspheres having thin shells consisting of a vinylidene chloride copolymer are embedded within this synthetic plastics material and are firmly an unseparably connected with the elastomeric synthetic plastics material, the hollow microspheres, the interior of which contains a gas, forming closed cells within the synthetic plastics material. These hollow microspheres can be formed in situ within the synthetic plastics material when producing the molded body by inflating compact particles of a vinylidene chloride copolymer and containing an inflating agent under the influence of heat, particularly under the influence of the heat of reaction generated. The hollow microspheres have a diameter between 10 and 100 micrometer. A crosslinking agent, for example butane-diol-1,4, a catalyst, pigments and/or plasticizers can be added to said reactant.

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