Patent · US Expired

Homogeneous thermoplastic mixtures of propylene-ethylene copolymers and liquid, saturated diorganopolysiloxanes within a certain viscosity range

US4292222A · kind A · utility

15Cited by

5References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Grigo · New Martinsville, US
Leo Morbitzer
Klaus-Peter Arlt · Krefeld, DE
Rudolf Binsack · Krefeld, DE
Josef Merten · Korschenbroich, DE

Key dates

Filing date	Feb 8, 1980
Grant date	Sep 29, 1981
Priority date	—
Expiry date	Feb 8, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L83/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A homogeneous thermoplastic mixture comprising (A) from 85 to 99.5% by weight of a propylene-ethylene copolymer containing from 0.5 to 15% by weight of copolymerized ethylene units and having a melt index of from 1.0 to 30 g/min at 230.degree. C. and under a load of 5 kg; and (B) from 0.5 to 15% by weight of a saturated diorganopolysiloxane having a viscosity of from 30,000 to 80,000 Cst at 20.degree. C. The mixtures of the present invention are particularly suitable for the manufacture of elastic polypropylene based moulded articles which are dimensionally stable in heat.

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