Patent · US Expired

Mixtures of optical brighteners

US4231741A · kind A · utility

1Cited by

1References

5Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Dieter Gunther · Kelkheim, DE
Rudiger Erckel · Eppstein, DE
Gunter Rosch · Bad Soden am Taunus, DE
Heinz Probst · Pocking, DE

Key dates

Filing date	Dec 21, 1978
Grant date	Nov 4, 1980
Priority date	—
Expiry date	Dec 21, 1998

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06L4/65
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Mixture of optical brighteners consisting of from 0.5 to 0.95 part by weight of a brightener of the series of the benzoxazolyl-stilbenes and of from 0.95 to 0.05 part by weight of a brightener of the series of the aryltriazoles.

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