Patent · US Expired

Stiff-chain polyesters and a method of preparing them

US5488093A · kind A · utility

0Cited by

7References

18Claims

0Family size

Assignee

Dainippon Ink and Chemicals, Inc. · JP

Inventors

Gerhard Kossmehl · Berlin, DE
Bettina Lundt · Berlin, DE

Key dates

Filing date	Mar 27, 1995
Grant date	Jan 30, 1996
Priority date	—
Expiry date	Mar 27, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2913
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The description relates to novel liquid-crystalline polyesters containing the following repeating units: A having the formula: ##STR1## and B having the formula ##STR2## The novel polyesters are of use e.g. as starting materials for production of fibres with improved mechanical properties. They can either be converted as such into fibres or can be added to conventional fibre-forming matrix polymers.

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