Process for the production of cellular elastomeric compositions

Details Process for the production of cellular elastomeric compositions Process for the production of cellular elastomeric compositions

1980-11-26

1982-03-09

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

260724, 264236, 2643282, 264DIG5, 264DIG18, 264DIG83, 273 61C, 273 76, 273DIG22, 521 79, 521 93, 521 95, 521 96, 521150, 525 5, 525370, 525386, B29H 720

Patent

active

043188753

ABSTRACT:
A cross-linked, cellular elastomeric composition is made from a formulation which includes one or more natural and/or synthetic rubbers, a cross-linking agent, a monomeric metallic salt of an ethylenically-unsaturated carboxylic acid and a blowing agent. The metallic salt is preferably basic zinc methacrylate. The composition may be used to provide a core for a tennis-ball or a sponge for a table-tennis bat. The former use enables advantage to be taken of the properties hitherto only found in pressurized playballs, while the latter use leads to a marked increase in the speed of the ball when struck by the bat.

REFERENCES:
patent: 3965055 (1976-06-01), Schiefman
patent: 4141559 (1979-02-01), Melvin et al.
patent: 4169599 (1979-10-01), Fujio et al.
patent: 4171411 (1979-10-01), Ehrenfreund
patent: 4182829 (1978-07-01), Watanabe et al.
patent: 4242296 (1980-12-01), Bricker

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