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:
Jul. 08, 1980
Filed:
Oct. 16, 1978
Applicant:
Inventors:
Engelbert Pechhold, Chadds Ford, PA (US);
Ivan M Robinson, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
528405 ;
Abstract
Block polymers containing hydroquinone di-(.beta.-hydroxyethyl) ether or one of its isomers or homologs as one of the constitutent blocks and a random copolymer of tetrahydrofuran and one or more alkylene oxides as one or more of the other constituent blocks are useful in preparing polyurethanes and polyesters.