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:
Jun. 16, 1981
Filed:
Jan. 30, 1980
Applicant:
Inventors:
Bertram Freudenberg, Weinheim an der Bergstrasse, DE;
Gunter Schuhmacher, Weinheim an der Bergstrasse, DE;
Horst Muhlfeld, Grasellenbach, DE;
Assignee:
Firma Carl Freudenberg, Weinheim an der Bergstrasse, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 49 ; 528 76 ; 528 80 ; 528 83 ;
Abstract
The invention described herein relates to a method for preparing a low-melting polyurethane which comprises the reaction of at least one diisocyanate, at least one polyol having a molecular weight between 500 and 5000, at least one diol which is branched or includes an ether group, and at least one diol which is unbranched. The diols have a molecular weight of less than about 500. The hydroxyl group content of the reaction mixture exceeds or equals the isocyanate content of the reaction mixture.