Preparation of dimensionally stable one-component polyurethane f

Details Preparation of dimensionally stable one-component polyurethane f Preparation of dimensionally stable one-component polyurethane f

1979-09-17

1981-04-21

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521131, 521159, 521912, 521917, C08G 1814

Patent

active

042634121

ABSTRACT:
A process for the preparation of a dimensionally stable one-component polyurethane foam from a storage-stable mixture, under pressure, of a prepolymer based on polyols and containing isocyanate groups and an organic blowing agent, with or without additives, by releasing the pressure and allowing the mixture to react with the atmosphere and cure, wherein the foamable mixture, which contains from 0.1 to 15% by weight, based on the weight of the prepolymer containing isocyanate groups, of a blowing agent is introduced into the inner container of a two-compartment pressure pack, which pack contains a pressure medium in the outer container, and is discharged, when required, through a dispensing device.

REFERENCES:
patent: 3096001 (1963-07-01), Boe et al.
patent: 3491916 (1970-01-01), Graham
patent: 3830760 (1974-08-01), Bengston
Klesper, Rubber Age, 84, p. 84, 1958.
Insta-Foam, Sticky Stuff, Pamphlet, 1979.

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