Patent · US Expired

Multi-ply weatherable plasticizer-free sheet

US4917944A · kind A · utility

12Cited by

4References

10Claims

0Family size

Assignee

Huels Troisdorf AG · DE

Inventors

Hans-Ulrich Breitscheidel · Siegburg, DE
Rudolf Kautz · Hennef (Sieg), DE
Werner Kuhnel · Uttenreuth, DE
Manfred Simm · Troisdorf, DE
Paul Spielau · Troisdorf, DE
Richard Weiss · Rancho Santa Margarita, US

Key dates

Filing date	Sep 30, 1987
Grant date	Apr 17, 1990
Priority date	—
Expiry date	Sep 30, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31931
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention describes a weatherable, plasticizer-free, uncrosslinked, and deep-drawable sheet, especially for the internal outfitting and external outfitting of automotive vehicles, as well as a process for its production, containing 65-25% by weight of a partially crystalline ethylene-propylene-diene terpolymer and 35-75% by weight of a homo- and/or copolymer of propylene, 0-10% by weight of fillers, as well as stabilizers and lubricants, the extruded or calendered sheet exhibiting a tensile strength at break in the longitudinal direction of at least 20 N/mm.sup.2. An advantageous further development of the invention comprises a composite sheet of EPDM/PP sheet with a crosslinked polyolefin foam layer.

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