Method for making a cellular rubber, cellular rubbers obtained b

Details Method for making a cellular rubber, cellular rubbers obtained b Method for making a cellular rubber, cellular rubbers obtained b

1993-03-29

1995-07-18

Schofer, Joseph L.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 51, 521 59, 521 70, 521 71, 521 72, 521 75, 521138, 521140, 521142, 424400, 424401, D28 4, D28 7, C08J 904, C08L 2100

Patent

active

054341949

ABSTRACT:
A method for making a cellular rubber is described, in which water is added to a high water absorption resin, followed by allowing the resulting mixture to stand and form a hydrous gel. The hydrous gel, with or without a foaming agent, is added to a rubber compound and subjected to foaming under conditions sufficient for vulcanization thereby obtaining a cellular rubber having a closed cell structure. Cosmetic puffs using the cellular rubber are also described.

REFERENCES:
patent: 4127547 (1978-11-01), Smarook
patent: 4394930 (1983-07-01), Korpman
patent: 5011875 (1991-04-01), Yamamoto et al.
patent: 5021050 (1991-06-01), Iskra

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