Method for producing solid-porous rubber articles

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion

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2041592, 260 25S, 264 52, 264 54, 264255, 264DIG14, 264DIG18, 428315, 428519, B29D 2700, C08C 1900

Patent

active

040326063

ABSTRACT:
According to the proposed method for producing solid-porous synthetic rubber articles, a preselected portion of a molded blank of a raw V-like polymeric elastomer compound containing a blowing agent is subjected to ionizing radiation at a temperature below the decomposition temperature of the blowing agent, after which said blank is subjected to heat treatment at a temperature higher than, or equal to the decomposition temperature of the blowing agent.
Despite its simplicity, the disclosed method provides for producing solid-porous rubber-like articles featuring high strength of their solid portion and excellent sealing qualities of their porous portion.

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Saunders, J. H. and K. C. Frisch, "Polyurethanes Chemistry and Technology," Part II, Technology, New York, Interscience, c1964, pp. 376-383.

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