Process for preparing open-cell structure of vinyl chloride resi

Details Process for preparing open-cell structure of vinyl chloride resi Process for preparing open-cell structure of vinyl chloride resi

1982-08-23

1984-02-07

Foelak, Morton

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156289, 427244, 427373, 521 73, 521 89, 521 94, 521145, 521910, 264DIG5, B29C 1900

Patent

active

044301367

ABSTRACT:
A process for preparing an open-cell structure from a vinyl chloride resin. The process includes mixing a vinyl chloride resin, stabilizer, plasticizer, surface active agent, azodicarbonamide and 4,4'-oxybisbenzenesulfonyl hydrazide to form a vinyl chloride resin paste. The vinyl chloride resin paste of step (a) is rendered alkaline, and mixed to form a uniformly-mixed paste. The paste is permitted to expand, and then heated to cause gelation.

REFERENCES:
patent: 3278466 (1966-10-01), Crom et al.
patent: 3645931 (1972-02-01), Normanton et al.

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