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:
Jan. 16, 1979
Filed:
Aug. 01, 1977
Applicant:
Inventors:
Bernd Kast, Ludwigshafen, DE;
Joachim Stedefeder, Lampertheim, DE;
Axel Sanner, Frankenthal, DE;
Hans-Uwe Schenck, Wachenheim, DE;
Richard Thoma, Battenberg, DE;
Hermann Fischer, Limburgerhof, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 63 ; 526 71 ; 526 88 ; 526194 ; 526201 ; 526202 ; 526203 ; 526220 ; 526240 ; 526303 ; 526909 ;
Abstract
Polymers in powder form are manufactured by polymerizing water-soluble ethylenically unsaturated monomers, which form hydrophilic polymers, in a powder bed of polymers of water-soluble ethylenically unsaturated compounds in the presence of polymerization initiators and water as an auxiliary liquid, the water being entirely or partially removed from the polymerization zone by evaporation during the polymerization.