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:
Jun. 02, 1987
Filed:
Dec. 20, 1984
Applicant:
Inventor:
Christoph Herrmann, Marl, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5153328 ; 5253329 ; 5253331 ; 5253332 ; 525383 ;
Abstract
A process for the production of low-molecular weight homo- and/or copolymers of 1,3-dienes carrying hydroxymethyl groups partially esterified with formic acid, comprises reacting homo- and/or copolymers of 1,3-dienes having an average molecular weight (Mn) of 500-8,000 with formaldehyde at temperatures of 150.degree.-300.degree. C. under a protective gas atmosphere and optionally in the presence of a solvent and a stabilizer.