Patent · US Expired

Polyvinylbutyral films which contain plasticizer and have a reduced adhesive power on glass

US4533601A · kind A · utility

15Cited by

10References

14Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hans D. Hermann · Bad Soden am Taunus, DE
Klaus Fabian · Kriftel, DE
Joachim Ebigt

Key dates

Filing date	Jan 31, 1984
Grant date	Aug 6, 1985
Priority date	—
Expiry date	Jan 31, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/3163
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The reduction of the adhesion to glass of thermoplastic polyvinylbutyral molding compositions, in particular films, which contain plasticizer and in which the polyvinylbutyral component has an increased content of vinyl alcohol units, by addition of a combination of potassium hydroxide, potassium formate or potassium acetate and a compound having a betaine structure, as the anti-adhesive agent. Use of the films with reduced adhesion to glass as the bonding layer for the production of glass laminates.

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