CH548484A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Anionic optical brightener/poly ether amine prepn - for mineral pigments for paper mfr improves double sided quality and evenness
Assignee: Sandoz Ag
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Filing: 1970-08-19
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Granted: —
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Expires: 1990-08-19
Abstract
Abstract The prepn. contains an anionic optical brightener and a polyether-amine in a wt. ratio of 1:1-15 pref. 1:3-11. Brighteners are pref. of the stilbene-triazinyl series. The polyether-amines can be prepd. by reacting an excess of aliphatic polyamines with prim. or sec. amino gp(s) and opt. OH gps. having mol. wt. is not >200, with polyepihalohydrins contg. 3-25 halomethyl gps. distilling off the excess polyamine and reacting the resultant polyether-amine with a crosslinking agent in aq. soln. so that the viscosity rises and the mixt. remains water-sol.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-27 11:22
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/30; C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; D06; D06L; D06L4/00; D06L4/60; D06L4/664
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