E.i. Dupont De Nemours and Company

Cellu Products Company

James G Burt

Howard Elliot Phillips

Boyd M Franklin

John P Burns

An Azeotrope or azeotrope-like composition of 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) with trans-1,2-dichloroethylene and cyclopentane useful in solvent cleaning applications.

Azeotrope or azeotrope-like composition of

The present invention provides a method and apparatus which permits recovering and reusing the volatile blowing agents which are used in the production of thermoplastic foams and contained within the cellular structure of the foam. Scraps of the foam material are processed so as to recover both the blowing agent and the thermoplastic resin in a form suitable for reuse.

Method and apparatus for recovering blowing agent from scrap foam

The present invention provides a method and apparatus which permits recovering and reusing the volatile blowing agents which are used in the production of thermoplastic foams.

Method and apparatus for recovering blowing agent in foam production

Preparation of polyurethane foams using 1,1-dichloro-2,2,2-trifluoroethane as a blowing agent eliminates the need for stabilizers in component mixtures.

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Oxford, PA, United States of America

James G Burt