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. 18, 1980
Filed:
Oct. 25, 1979
Applicant:
Inventors:
Assignee:
Bridgestone Tire Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521107 ; 521110 ; 521112 ; 521128 ; 521163 ;
Abstract
A method of producing polyurea foams is disclosed. The polyurea foam is produced by reacting an organic polyisocyanate with water in the presence of urea or by reacting a crude tolylene diisocyanate or a mixture of crude tolylene diisocyanate and crude diphenylmethane diisocyanate as an organic polyisocyanate with water in the presence of an amine catalyst, a silicone surfactant and, if necessary, a tin catalyst.