Patent · US Expired

Filaments and fibers having improved dyeability prepared from bis ethoxylated tetramethyl bisphenol A

US4067850A · kind A · utility

7Cited by

2References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Armin Kohler · Ingolstadt, DE
Herbert Pelousek · Dormagen, DE
Ekkehard Frohberg

Key dates

Filing date	Jan 21, 1976
Grant date	Jan 10, 1978
Priority date	—
Expiry date	Jan 21, 1996

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F6/84
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Filaments and fibers having improved dyeability comprising a terephthalic acid copolyester containing bis ethoxylated tetramethylbisphenol A in cocondensed form.

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