Water resistant personal care polymers

Patent metadata

Field	Value
Publication number	US-2016338940-A1
Application number	US-201615231052-A
Country	US
Kind code	A1
Filing date	Aug 8, 2016
Priority date	Dec 22, 2011
Publication date	Nov 24, 2016
Grant date	—

Abstract

Described are personal care compositions comprising a polymer comprising: (a) one or more polymer comprising, as polymerized units, (i) 75% to 35% by weight, based on the weight of said polymer, one or more (meth)acrylate monomer selected from at least one of C1-C4 (meth) acrylate, (meth)acrylic acid, styrene, or substituted styrene, and (ii) 25% to 65% by weight, based on the weight of said polymer, one or more hydrophobic monomer, including hydrophobically substituted (meth)acrylate monomers, with alkyl chain length from C8 to C22 and, (iii) optionally crosslinker, and, (b) at least one suncare active. Optionally, the polymer further includes a stage 2 polymer comprising, as polymerized units, (i) 10-99% of one or more monomer which has a Tg of more than 80° C. after polymer formation, (ii) 1-10% of one or more (meth)acrylate monomer containing acid functional group, and (iii) optionally, a crosslinker.

First claim

1 . A personal care composition comprising a polymer comprising:
(a) one or more polymer comprising, as polymerized units,
(i) 75% to 35% by weight, based on the weight of said polymer, one or more (meth)acrylate monomer selected from at least one of C1-C4 (meth)acrylate, (meth)acrylic acid, styrene, or substituted styrene, and
(ii) 25% to 65% by weight, based on the weight of said polymer, one or more hydrophobic monomer, including hydrophobically substituted (meth)acrylate monomers, with alkyl chain length from C8 to C22 and,
(iii) optionally crosslinker, and,
(b) at least one suncare active.

2 . The personal care composition of claim 1 , wherein monomer (i) is at least two of butyl acrylate, methyl methacrylate, methacrylic acid, or styrene.

3 . The personal care composition of claim 1 , wherein monomer (ii) is at least one of ethylhexyl acrylate, lauryl methacrylate, stearyl methacrylate, and cetyl-eicosyl methacrylate, behenyl methacrylate, lauryl acrylate, stearyl acrylate, and cetyl-eicosyl acrylate, behenyl acrylate.

4 . The personal care composition of claim 1 , wherein monomer (ii) is at least two of ethylhexyl acrylate, lauryl methacrylate, stearyl methacrylate, and cetyl-eicosyl methacrylate, behenyl methacrylate, lauryl acrylate, stearyl acrylate, and cetyl-eicosyl acrylate, behenyl acrylate.

5 . The personal care composition of claim 1 , wherein the suncare active is at least one of octyl methoxycinnamate, avobenzone, para aminobenzoic acid, homosalate, titanium dioxide, zinc oxide, benzophenones, benzylidenes, octyl crylene, Tinosorb M, Tinosorb S or salicylates.

6 . The personal care composition of claim 1 , wherein the polymer is formed in a single stage.

7 . The personal care composition of claim 1 , wherein the polymer is formed in a two stage reaction.

8 . The personal care composition of claim 7 , wherein the stage 2 polymer comprises, as polymerized units,
(i) 10-99% of one or more monomer which has a Tg of more than 80° C. after polymer formation, (ii) 1-10% of one or more (meth)acrylate monomer containing acid functional group, and (iii) optionally, a crosslinker.

9 . The personal care composition of claim 7 , wherein the stage 1 and stage 2 ratio ranges from 60:40 to 99 to 1.

10 . The personal care composition of claim 7 , wherein the polymer is selected from the group consisting of
(a) a polymer comprising stage 1 in an amount of 85 weight % and stage 2 in an amount of 15 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 31 parts by weight stearyl methacrylate/25 parts by weight butyl acrylate/29 parts by weight styrene/15 parts by weight methacrylic acid, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (b) a polymer comprising stage 1 in an amount of 80 weight % and stage 2 in an amount of 20 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 31 parts by weight stearyl methacrylate/25 parts by weight butyl acrylate/29 parts by weight styrene/15 parts by weight methacrylic acid, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (c) a polymer comprising stage 1 in an amount of 70 weight % and stage 2 in an amount of 30 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 31 parts by weight stearyl methacrylate/25 parts by weight butyl acrylate/29 parts by weight styrene/15 parts by weight methacrylic acid, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (d) a polymer comprising stage 1 in an amount of 85 weight % and stage 2 in an amount of 15 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 20 parts by weight butyl acrylate/40 parts by weight ethylhexyl acrylate/38.5 parts by weight methyl methacrylate/1.5 parts by weight methacrylic acid/0.075 parts by weight allyl methacrylate, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (e) a polymer comprising stage 1 in an amount of 80 weight % and stage 2 in an amount of 20 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 20 parts by weight butyl acrylate/40 parts by weight ethylhexyl acrylate/38.5 parts by weight methyl methacrylate/1.5 parts by weight methacrylic acid/0.075 parts by weight allyl methacrylate, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (f) a polymer comprising stage 1 in an amount of 70 weight % and stage 2 in an amount of 30 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 20 parts by weight butyl acrylate/40 parts by weight ethylhexyl acrylate/38.5 parts by weight methyl methacrylate/1.5 parts by weight methacrylic acid/0.075 parts by weight allyl methacrylate, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate and 1 methacrylic acid; (g) a polymer comprising stage 1 in an amount of 80 weight % and stage 2 in an amount of 20 weight %, based on the total weight of the polymer, wherein stage 1 comprises, as polymerized units, based on the weight of stage 1, 20 parts by weight butyl acrylate/40 parts by weight ethylhexyl acrylate/38.5 parts by weight methyl methacrylate/1.5 parts by weight methacrylic acid/0.075 parts by weight allyl methacrylate, and wherein stage 2 comprises, as polymerized units, based on the weight of stage 2, 99 parts by weight methyl methacrylate/1 methacrylic acid/0.075 allyl methacryate; and combinations thereof.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Zhang Li
• Zeng Fanwen

Classifications

• C08F220/14

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• A61K8/8152 Primary

  Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers · CPC title

• A61K2800/48

  Thickener, Thickening system · CPC title

• A61K8/37

  Esters of carboxylic acids · CPC title

• C08F220/68

  Esters · CPC title