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:
Jul. 30, 1985
Filed:
Jan. 20, 1984
Applicant:
Inventors:
Walter Denzinger, Speyer, DE;
Heinrich Hartmann, Limburgerhof, DE;
Gerhard Faulhaber, Bad Durkheim, DE;
Hans-Juergen Rauben Heimer, Ketsch, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528498 ; 424 78 ; 528497 ;
Abstract
Physiologically unacceptable solvents are removed from polymers containing carboxyl or anhydride groups by a process in which the polymer is treated with aliphatic hydrocarbons at a temperature which is no lower than the lower limit of the softening range of the polymer.