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, 1982
Filed:
Sep. 11, 1981
Applicant:
Inventor:
Paul Sunder-Plassmann, Marl, DE;
Assignee:
Chemische Werke Huls AG, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528403 ; 528408 ; 548239 ;
Abstract
A process for producing linear or slightly branched 2-(C.sub.1 to C.sub.3 -alkyl)-.DELTA..sup.2 -oxazoline copolymers from more than 50 mole % of 2-(isopropyl- and/or n-propyl)-.DELTA..sup.2 -oxazoline and less than 50 mole % of 2-(methyl- and/or ethyl)-.DELTA..sup.2 -oxazoline, the copolymers having a viscosity number in the range of 35 to 70 ml/g which is easily reproducible from batch to batch, comprises polymerizing the corresponding monomers in the presence of a cation-active catalyst having an anion of slightly nucleophilic nature, wherein,