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:
Sep. 04, 1984
Filed:
Sep. 07, 1982
Applicant:
Inventor:
Raban Grundmann, Marl, DE;
Assignee:
Chemische Werke Huels AG, Marl, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08J / ;
U.S. Cl.
CPC ...
521 64 ; 521 87 ;
Abstract
The invention concerns the production of a voluminous, particulate vinyl chloride polymer by precipitation of a solution of the polymer in a heated, agitated nonsolvent with removal of the solvent by distillation, the nonsolvent exhibiting a boiling point of >100.degree. C. under normal pressure, and the temperature of the nonsolvent being 40.degree.-120.degree. C. above the boiling point of the solvent, but does not fall below 100.degree. C. nor range above 180.degree. C. The voluminous, particulate polymer is suitable for the production of damping materials.