Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Fluorescent dye – e.g. – stilbene – benzimidazole – benzoxazole,...
Patent
1978-09-11
1980-09-16
Jiles, Henry R.
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Fluorescent dye, e.g., stilbene, benzimidazole, benzoxazole,...
25230132, 427158, 260 40R, 260 40P, 260 4221, 260 4243, 260 4246, 26034671, 8641, D06P 100, C07D30784, C07D30780
Patent
active
042227399
ABSTRACT:
Benzodifuranes of the formula ##STR1## wherein R represents hydrogen, alkyl or halogen, each of R.sub.1, R.sub.2 and R.sub.3 represents hydrogen or different non-chromophoric substituents, with the proviso that at least one of the symbols R, R.sub.1, R.sub.2 or R.sub.3 does not represent hydrogen, processes for their production and the use thereof for whitening organic material of high molecular weight, especially polyester, polyvinyl chloride or polystyrene.
REFERENCES:
patent: 3864333 (1975-02-01), Sahm et al.
patent: 3971731 (1976-07-01), Hartmann et al.
patent: 3993670 (1976-11-01), Hartmann et al.
Dischendorfer et al., Chem. Abstracts, vol. 30, (1936), 5953.
Grinev et al., Chem. Abstracts, vol. 51, (1957), 16408g.
Sugiyama, Chem. Abstracts, vol. 41, (1947), 5506h.
Kagi Bruno
Kormany Geza
Luthi Christian
Almaula Prabodh I.
Ciba-Geigy Corporation
Dentz Bernard
Jiles Henry R.
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