Patent · US Expired

Thermoplastic molding compositions of polyvinylbutyral containing plasticizer

US4537830A · kind A · utility

7Cited by

10References

8Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

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

Key dates

Filing date	Jan 31, 1984
Grant date	Aug 27, 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

Thermoplastic molding compositions comprising 65-80% by weight (based on the molding composition) of a polyvinylbutyral which preferably contains 19-28% by weight (based on the polyvinylbutyral) of vinyl alcohol units, and 35-20% by weight (based on the molding composition) of a plasticizer mixture of 50-99% by weight (based on the plasticizer mixture) of a di-, tri- or tetra-glycol diester and 50-1% by weight (based on the plasticizer mixture) of a phosphoric acid triester. The preparation of the molding compositions by mixing the constituent components and their use for the production of shaped thermoplastic articles, in particular high-strength films for use as the bonding intermediate layer in the production of laminated glass.

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