Water resistant polymers for personal care

Patent metadata

Field	Value
Publication number	US-9820929-B2
Application number	US-201615145059-A
Country	US
Kind code	B2
Filing date	May 3, 2016
Priority date	Mar 29, 2012
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

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 personal care 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

The invention claimed is:

1. A personal care composition comprising a polymer comprising:
(a) one or more polymer comprising (i) 70% to 85% by weight of a first stage polymer, based on the total weight of the one or more polymer, and (ii) 15% to 30% by weight of a second stage polymer, based on the total weight of the one or more polymer,
(b) at least one personal care active other than a suncare active,
wherein the first stage polymer comprises, as polymerized units, 14 to 20 parts by weight of butyl acrylate monomer, 28 to 40 parts by weight of ethylhexyl acrylate monomer, 27 to 38.5 parts by weight of methyl methacrylate monomer, 1 to 1.5 parts by weight methacrylic acid monomer, and 0.01 to 0.3 parts by weight of allyl methacrylate, all being based on the total weight of the first stage polymer, and
wherein the second stage polymer comprises, as polymerized units, 99 parts by weight methyl methacrylate and 1 part by weight methacrylic acid, all being based on the total weight of the second stage polymer, and
wherein the second stage polymer has a T g of from 80° C. to 120° C.

2. The personal care composition of claim 1 , wherein the personal care active is at least one of moisturizing actives such as moisturizing agents, emollients, anti-oxidants, botanicals, skin lightening agents, cleansing actives for personal care, detergent actives for personal care, vitamins, folic acid derivatives, exfoliating agents, deodorizing actives, fragrance actives, skin exfoliating actives, topical medicament actives for personal care, cosmetic agents for personal care, hair conditioners, facial care actives, pigments, colorants, silicones, topical preparations, infrared (IR)-absorbing materials for personal care, acne medications and combinations thereof.

3. The personal care composition of claim 1 , wherein the stage 2 polymer comprises a crosslinker.

Assignees

• Rohm & Haas
• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Zhang Li
• O'Connor Ying

Classifications

• A61Q19/007

  Preparations for dry skin · CPC title

• A61Q1/02

  Preparations containing skin colorants, e.g. pigments (preparations in powder form A61Q1/12) · CPC title

• A61K2800/43

  Pigments; Dyes · CPC title

• A61Q15/00

  Anti-perspirants or body deodorants (deodorisation of air A61L9/00) · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title