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. 01, 1977
Filed:
May. 13, 1975
Applicant:
Inventors:
Herbert Braunisch, Diedenbergen, Taunus, DT;
Heinz Lehmann, Kriftel, Taunus, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 4213 ; 260 4222 ; 260 4255 ;
Abstract
The sound absorbing properties of plasters, based on synthetic resin emulsions as binders, are improved, if as binder dispersions are used the polymer content of which has a dilatometrically determined second order transition temperature of between -20.degree. C and +10.degree. C, and if the fillers consist of at least 70% of material having a grain-size of from 0.35 to 1.5 mm.