Patent · US Expired

Homogeneous polymer blends comprising rigid rod shaped polymers and flexible polymers

US5504157A · kind A · utility

2Cited by

7References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Claus D. Eisenbach · Sindelfingen, DE
Karl Fischer · Burns Lake, CA
Jorg Hoffmann · Katzenelnbogen, DE

Key dates

Filing date	Jan 10, 1995
Grant date	Apr 2, 1996
Priority date	—
Expiry date	Jan 10, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/14
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A homogeneous polymer blend is disclosed containing components A and B. Accordingly A is about 1 to 30% by weight of a rigid, rod-shaped polymer having a persistence length of at least 10 nm and a ratio of molecular length to molecular diameter of at least 30, and B) is about 70 to 99% by weight of a flexible polymer which contains at least one member selected from the group consisting of non-ionic polar groups, ionic groups and groups convertible into ions. The flexible polymer is any one of polyolefins, polyacrylates, polyamides and polyurethanes. Component A) contains at least one chemically fixed member selected from the group consisting of non-ionic polar group, ionic group and a group convertible into ionic group, in an amount sufficient to render said A) and B) compatible one with the other.

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