Foaming and vulcanizing of elastomeric polymers

Details Foaming and vulcanizing of elastomeric polymers Foaming and vulcanizing of elastomeric polymers

1985-09-30

1986-05-13

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 89, 521 91, 521 92, 521 95, 521138, 521140, 521144, 521148, 521150, C08J 910

Patent

active

045887527

ABSTRACT:
Closed-cell crosslinked sponges of varying densities are prepared from an admixture of a vulcanizable elastomer, vulcanizing ingredients selected from sulfur or sulfur donor compounds together with metal oxides and/or sulfur vulcanization accelerators and a t-alkylhydrazinium salt and/or carbonylhydrazine. The crosslinked sponges have uniform cellular structures and are easily prepared with the desired density.

REFERENCES:
patent: 3580867 (1971-05-01), Spenadel
patent: 4307204 (1981-12-01), Vidal
patent: 4322502 (1982-03-01), Stott
patent: 4393148 (1983-07-01), Kamens
patent: 4397965 (1983-08-01), Stott
patent: 4435525 (1984-03-01), Kamens

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