Patent · US Expired

Flame retarding linear polyesters and shaped articles thereof

US3941752A · kind A · utility

53Cited by

3References

8Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hans-Jerg Kleiner · Kronberg, DE
Manfred Finke
Ulrich Bollert · Diedenbergen, DE
Walter Herwig · Bad Soden, DE

Key dates

Filing date	Sep 13, 1974
Grant date	Mar 2, 1976
Priority date	—
Expiry date	Sep 13, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S260/24
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Flame-repellant linear polyesters are obtained by incorporating by condensation phosphorus-compounds having the formula ##EQU1## wherein R and R.sub.1 are organic radicals which may also contain hereto atoms into the linear polyesters, preferably those from terephthalic acid and ethylene glycol. These polyesters are materials of which flame-repellent filaments, fibers, sheets, press-moulded and injection-moulded articles may be made. Products of the invention can be used whereever especially acute risks of ignition and fire exist.

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