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:
Feb. 03, 2015
Filed:
Aug. 29, 2011
Gyorgyi Fenyvesi, Wilmington, DE (US);
Raja Hari Poladi, Bear, DE (US);
Hari Babu Sunkara, Hockessin, DE (US);
Gyorgyi Fenyvesi, Wilmington, DE (US);
Raja Hari Poladi, Bear, DE (US);
Hari Babu Sunkara, Hockessin, DE (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Disclosed is branched poly(trimethylene ether) polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether) polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a Mof about 200 to about 6000. The polyols are useful in the preparation of polyurethane rigid and flexible foams.