EP 0238446 B1 19951115 - Mixtures of optical brighteners.
Title (en)
Mixtures of optical brighteners.
Title (de)
Mischungen von optischen Aufhellern.
Title (fr)
Mélanges d'agents de blanchiment optique.
Publication
Application
Priority
CH 114286 A 19860321
Abstract (en)
[origin: US4778622A] Mixtures of fluorescent whitening agents consisting of 51 to 99% by weight of a symmetrically or unsymmetrically substituted first 1,4-bis(cyanostyryl)benzene and 49 to 1% by weight of an unsymmetrically substituted second 1,4-bis(cyanostyryl)benzene that differs from the first, a process for the preparation of said mixtures by condensing terephthalaldehyde with a di(C1-C4) alkylphosphonomethylbenzonitrile to cyano-4-formylstilbene, which is further condensed, either direct or after isolation, with at least one other di(C1-C4)alkylphosphonomethylbenzonitrile, the use of these mixtures for whitening polyester fibres, and compositions containing said mixtures for whitening polyester fibres.
IPC 1-7
IPC 8 full level
C09B 67/42 (2006.01); C09B 67/22 (2006.01); D06L 3/12 (2006.01); D06L 4/65 (2017.01)
CPC (source: EP US)
D06L 4/65 (2016.12 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0238446 A1 19870923; EP 0238446 B1 19951115; BR 8701260 A 19880105; CA 1340088 C 19981020; DE 3751594 D1 19951221; JP 2578108 B2 19970205; JP S62232464 A 19871012; MX 168413 B 19930524; US 4778622 A 19881018; US 4891153 A 19900102
DOCDB simple family (application)
EP 87810151 A 19870316; BR 8701260 A 19870320; CA 532408 A 19870319; DE 3751594 T 19870316; JP 6445387 A 19870320; MX 563187 A 19870319; US 22864388 A 19880805; US 2502387 A 19870312