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:
Mar. 05, 1996
Filed:
Feb. 10, 1993
Applicant:
Inventors:
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
25218224 ; 25218227 ; 25218228 ; 528 60 ; 528 65 ; 528 66 ; 528 745 ; 528 76 ; 528 77 ; 528 79 ; 528 80 ; 528 81 ; 528 83 ; 528 85 ;
Abstract
A method for producing a polyurethane elastomer which comprises reacting (1) either a polyisocyanate and a polyol or an isocyanate-terminated prepolymer obtainable by reacting said polyisocyanate with said polyol with (2) a diol of general formula ##STR1## wherein A.sub.1 and A.sub.2 are the same or different and each represents a bond, --O-- or --COO--; R.sub.1 and R.sub.2 are the same or different and each represents C.sub.1-6 alkylene; X.sub.1 and X.sub.2 are the same or different and each represents H or hydroxyalkyl and (3) a triol having a hydroxyl equivalent of 60 to 500, gives a polyurethane elastomer with improved tensile strength, tear strength and other mechanical properties.