Magnesium salt copolymers of unsaturated dicarboxylic acid anhydride and unsaturated monomer having a lipophile chain
AssigneeSociete Anonyme dite: L'Oreal
InventorsAndre Viout, David Esanu, deceased, Lydie Esther Samama, administratrix
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Abstract
Copolymers formed from an unsaturated dicarboxylic acid anhydride and an unsaturated monomer having a lipophile chain having a molecular weight of 4,000-100,000 are usefully employed to produce a water-in-oil emulsion which can be incorporated into cosmetic compositions.
Claims3
The magnesium salt of a copolymer having the formula ##EQU12## wherein A is selected from the group consisting of ##EQU13## wherein R.sub.2 is selected from the group consisting of hydrogen and methyl, and
- R is selected from the group consisting of
- (d) alkyl having 8-18 carbon atoms,
- e. ##EQU14## wherein R.sub.3 is alkyl having 17 carbon atoms, f. --O--R.sub.4 wherein R.sub.4 is alkyl having 16 carbon atoms,
- g. ##EQU15## wherein Y is selected from the group consisting of --O--C.sub.12 H.sub.25, --S--C.sub.12 H.sub.25 and --NH--C.sub.18 H.sub.37 with the proviso that when R has the values of (d) to (g), R.sub.1 is hydrogen, and
- h. ##EQU16## wherein R.sub.5 is alkyl having 11-17 carbon atoms, with the proviso that when R has the value of (h), R.sub.1 is selected from the group consisting of hydrogen and methyl, the molar ratio of monomeric units I:II is 1:1 and said copolymer has a weight average molecular weight ranging between 4,000-100,000.
The magnesium salt of a copolymer having the formula ##EQU17## wherein R' represents ##EQU18## wherein R.sub.8 is selected from the group consisting of hydrogen and methyl, and
- R.sub.7 is selected from the group consisting of
- a. ##EQU19## wherein R.sub.9 is alkyl having 18 carbon atoms, b. ##EQU20## wherein R.sub.10 is alkyl having 18 carbon atoms, with the proviso that when R.sub.7 has the values of (a)-(b), R.sub.6 represents hydrogen, and
- c. ##EQU21## wherein R.sub.11 is alkyl having 12-18 carbon atoms, with the proviso that when R.sub.7 has the value of c., R.sub.6 is selected from the group consisting of hydrogen and methyl,
- the molar ratio of monomeric units I:II ranges between 1-1.5:
- 0.5-1 and said copolymer has a weight average molecular weight ranging between 4,000-100,000.
The magnesium salt of a copolymer of (1) an unsaturated dicarboxylic acid anhydride selected from the group consisting of maleic anhydride, itaconic anhydride, citraconic anhydride, acrylic anhydride, methacrylic anhydride and acrylic-methacrylic anhydride and (2) a copolymerizable unsaturated monomer having a lipophile chain and being selected from the group consisting of 1-octadecene, 1-hexadecene, 1-eicosene, dodecyl methacrylate, allyl stearate, N-stearyl acrylamide, N-allyl stearamide, 1-allyl-oxy-3-dodecylthio-2-propanol, 1-allyloxy-3-dodecyloxy-2-propanol, 1-allyloxy-3-stearylamino-2-propanol, cetyl vinyl ether, vinyl stearate, 1-decene and methallyl laurate, said copolymer having a weight average molecular weight ranging from 4,000-100,000.
Dependencies are inferred from the claim text.