Method and composition for closed cell foam formation

Details Method and composition for closed cell foam formation Method and composition for closed cell foam formation

1981-08-21

1982-12-07

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521914, C08G 1814, C08G 1832

Patent

active

043628230

ABSTRACT:
Small amounts of ethoxylated (propoxylated propylene glycol) utilized as a surfactant/emulsifier for polyolisocyanate reaction systems for producing rigid foams that can produce at least 80% closed cell formation where the surfactant does not produce undesirable reaction products with the isocyanate and has an HLB less than 4.

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patent: 3865762 (1975-02-01), Repiqnet et al.
patent: 3985688 (1976-10-01), Speech
patent: 4160076 (1979-07-01), Guthrie et al.
patent: 4190711 (1980-02-01), Zdrahala et al.
patent: 4273884 (1981-06-01), Dominguez
patent: 4303755 (1981-12-01), Yukuta et al.
Griffin, Official Digest, Jun. 1956, pp. 446-455.
Technical Data on Pluronic Polyols, BASF Wyandotte Corp., Wyandotte, Michigan (OS-796) no Date.
Technical Data on Tetronic Polyols Series of Non-ionic Surfactants, BASF Wyandotte Corp., Wyandotte, Michigan (O-85R/2) no date.
Schonfeldt, Surface Active Ethylene Oxide Adducts, Pergamon Press, Oxford (1969) pp. 78-81 and 227-235.

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