Polyurethane foam product and process

Details Polyurethane foam product and process Polyurethane foam product and process

1989-08-18

1991-02-12

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

25218221, C08G 1814

Patent

active

049924834

ABSTRACT:
A process for preparing polyurethane foams comprising reacting polyol with polyfunctional isocyanate in the presence of an auxiliary blowing agent comprising 1 monofluoro 1,1 dichloroethane. The amount of auxiliary blowing agent used is from 60 to 80 wt % of the amount of conventional auxiliary blowing agent consisting of trichlorofluoromethane that would be required to obtain comparable foam density and either firmness or compressive strength.

REFERENCES:
patent: 4636529 (1987-01-01), Crooker
patent: 4713399 (1987-12-01), Webb et al.
Paper presented to Soc. for Plastics Industry (SPI), 31st Annual Technical/Marketing Conf., Phila., Pa., Oct. 18-21, 1988, (Creazzo, Bartlett & Ascough).
Abstract of Paper Proposed for 32nd Annual Polyurethane Conf., Oct. 1-4, 1989, "Alternative Blowing Agent Field Trials in Flexible Polyurethane Operations", prepared by Sylvester, Ascough.
Abstract of Paper proposed for 32nd Annual Polyurethane Conf., Oct. 1-4, 1989, "An Evaluation of HCFC-123 and HCFC-141b as Auxiliary Blowing Agents for Flexible Polyurethane Foam", prepared by Allied-Signal Inc.

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