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:
Dec. 21, 1976
Filed:
Nov. 11, 1975
Applicant:
Inventors:
Hans Dieter Hermann, Neuenhain, Taunus, D;
Joachim Ebigt, Frankfurt am Main, D;
Klaus Fabian, Kriftel, Taunus, D;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, D;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
260 / ; 526-7 ; 526-9 ; 526 11 ;
Abstract
Mixtures of two distinct polyvinyl butyral grades, viz., one high viscosity and one low viscosity grade, both having a narrow molecular weight distribution exhibit good processing characteristics which nearly reach the performance of the high viscosity grades hitherto used.