Patent · US Expired

Silane-modified polyvinyl acetals

US6756442B2 · kind B2 · utility

0Cited by

7References

9Claims

0Family size

Assignee

WACKER POLYMER SYSTEMS GMBH & CO. KG · DE

Inventors

Kurt Stark · Schaffhausen, CH
Thomas Kornek · Burghausen, DE
Bernhard Glaser · Ismaning, DE
Karl-Heinz Eichel · Burghausen, DE

Key dates

Filing date	Aug 13, 2002
Grant date	Jun 29, 2004
Priority date	—
Expiry date	Aug 13, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F8/42
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to silane-modified polyvinyl acetals obtained by acetalizing partially hydrolyzed or fully hydrolyzed vinyl ester polymers having at least 50 mol % of vinyl alcohol units with one or more aldehydes, optionally in the form of their hemiacetals or their acetals, where at least one aldehyde contains hydrolyzable silane groups.

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