The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1997
Filed:
Aug. 20, 1996
Richard Stevenson, Mesa, AZ (US);
Intercool Energy Corporation, Latham, NY (US);
Abstract
A blowing agent for use in preparing a polyisocyanate-based foam which comprises a major portion of HCFC-123, a minor portion of HCFC-141b, a branched or unbranched aliphatic alkane having from 6 to 10 carbon atoms or mixtures thereof, and a polyether component which reduces cell size in the resultant polyisocyanate-based foam. The polyether component includes a mixture of polymerized, oxidized perfluorinated propene polyethers having a molecular weight distribution of from about 400 to about 1800 units. Alternatively, the polyether component can be added to the foam precursor materials separate from the blowing agent. Blowing agents and polyether additives for polyurethane-based foams are also provided.