Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1991-02-05
1993-09-14
Page, Thurman K.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
424 62, 424 63, 424401, 106493, 8423, A61K 7021
Patent
active
052444970
ABSTRACT:
The invention relates to a process for the preparation of a melanic pigment, comprising the polymerisation of a compound corresponding to the formula: ##STR1## in which: R denotes a hydrogen atom, an alkyl, alkoxy, hydroxyalkyl, SiR.sub.4 R.sub.5 R.sub.6 or aminoalkyl radical, or an aryl radical which is unsubstituted or substituted by OH, NH.sub.2, alkyl, alkoxy or NO.sub.2 ;
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Andrean Herve
Higgins Irwing J.
Junino Alex
Tuloup Remi
"L'Oreal"
Hulina Amy
Page Thurman K.
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