Patent · US Expired

Thermoplastic rubber blends of polycarbonates and block copolymers

US4218545A · kind A · utility

12Cited by

6References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Volker Serini · Krefeld, DE
Manfred Beck · Wipperfürth, DE
Leo Morbitzer
Gert Humme
Jochen Schnetger · Odenthal, DE

Key dates

Filing date	Mar 22, 1977
Grant date	Aug 19, 1980
Priority date	—
Expiry date	Mar 22, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L69/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Mixtures of PA0 (1) 99 to 1% of one or more segment copolymers of alternating linear or branched segments A and B wherein A are polymer blocks of aromatic vinyl compounds with Tg>20.degree. C. (hard segment) and B are polymer blocks containing polymerized conjugated dienes with Tg>0.degree. C. (soft segment), and PA0 (2) 1 to 99% of one or more aromatic polycarbonates in which the linear chains consist to an extent of at least 50% of structural units of the formula ##STR1## wherein X=C.sub.1 -C.sub.5 alkylene or alkylidene.

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