Patent CH521392A successfully refreshed from Google Patents.
CH521392A
Expired / Lapsed
CH
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Production of coloured copolymers for hair preparations
Assignee: Oreal
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Filing: 1968-06-11
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Granted: —
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Expires: 1988-06-11
Abstract
Abstract A coloured copolymer is built up from units (I) where A is one of the residues in which R and R' are hydrogen and/or lower alkyl and R" and R'" are lower alkyl, and units (II) or (III) different from where R1 and R2 are hydrogen and/or lower alkyl and R3 is hydrogen, lower alkyl, -OCOCH3, -COOCH3 or -CN, whilst M, which may be the same or different in the various units, is a group D-NH-, derived from an amine dye with the formula D-NH2 and/or a group CnH2n+1O-, derived from an alcohol CnH2n+1 OH, where n = 1-4; at least 5% of the M units represent a dye residue.
Inventors
- 👤 Kalopissis Gregoire
- 👤 Viout Andre
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-05 22:09
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; C; C08; C08F; C08F8/00; C08F8/14; C08F8/30; C08F8/32; C09; C09B; C09B69/00; C09B69/10; A61K2800/00; A61K2800/40; A61K2800/57
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