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. 20, 1984
Filed:
May. 24, 1982
Applicant:
Inventors:
Gilbert Sielfeld, Marl, DE;
Paul Sunder-Plassmann, Marl, DE;
Assignee:
Chemische Werke Huels, AG, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526202 ; 526220 ; 5263442 ;
Abstract
Vinyl chloride is polymerized in suspension using as the suspension stabilizer a copolymer of 65-85 molar percent of 2-isopropyl-.DELTA..sup.2 -oxazoline and 35-15 molar percent of 2-methyl-.DELTA..sup.2 -oxazoline, having a viscosity number of 35-80 ml/g, measured at 25.degree. C. in an isopropanol/water mixture (50 volume percent of isopropanol) in a concentration of 0.5% (weight/volume of solution).