Patent · US Expired

Process for preparing solid polyvinyl ester resins

US6939931B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

WACKER POLYMER SYSTEMS GMBH & CO. KG · DE

Inventors

Peter Tschirner · Emmerting, DE
Andreas Lumpp · Burghausen, DE
Robert Singer · Burghausen, DE
Guenter Braunsperger · Haag in Oberbayern, DE

Key dates

Filing date	Feb 13, 2003
Grant date	Sep 6, 2005
Priority date	—
Expiry date	Feb 13, 2023

Classification

Technology area (CPC A)Human Necessities
CPC primaryA23G2200/00
WIPO fieldFood chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.