ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER

CAS Number	999999-89-7
Chem/IUPAC Name:	Copolymer formed from the ester of 2-methylpropenoic acid and docosanol, ethoxylated, 25 mol EO (average molar ratio) and one or more monomers of acrylic acid, methacrylic acid or one of their simple esters
COSING REF No:	54266

Acrylates/Beheneth-25 Methacrylate Copolymer is a copolymer of the ester of methacrylic acid and Beheneth-25 and one or more monomers of acrylic acid, methacrylic acid, or one of their simple esters. It is a white, and opaque flowing dispersion. It functions as an aqueous viscosity increasing agent.

Who supplies ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER ?

Lubrizol

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Coatex (Arkema Group)

Croda

Molkem

Dow

What is ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER used for?

Acrylates/Beheneth-25 Methacrylate Copolymer works as a rheology modifier or viscosity controller in cosmetics and personal care products. Acrylates/Beheneth-25 Methacrylate Copolymer in hair products is commonly found in clear shampoos, hair conditioners, and hair dye developers.

Acrylates/Beheneth-25 Methacrylate Copolymer in skin care is found in bath and body care products, sun care products, soaps, eye contour products, etc. It has been found to be used at a maximum concentration of 0.3-1.7% in leave-on products and 0.05-1% in rinse-off products.

Origin

During emulsion polymerization, copolymers such as the acrylate copolymer are formed, such as a fully polymerized copolymer of methyl methacrylate and ethyl acrylate with the quantitative formula poly(ethyl acrylate-co-methyl methacrylate) 2:1. Using a free radical donor redox initiator system, the monomers ethyl acrylate and methyl methacrylate undergo redox-initiated polymerization. An alkyl mercaptan is used as a chain-modifying agent, and polyethylene glycol monostearyl ether is used as an emulsifier. An emulsifier is added at the end of the procedure to lessen foaming. Water vapor distillation is used to remove extra water and any remaining monomers, and sodium hydroxide is added to the reaction mixture to bring down its pH.

What does ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER do in a formulation?

Viscosity controlling

Safety profile

The Cosmetic Ingredient Review (CIR) Expert Panel reviewed available scientific data supporting the safety of 126 acrylates copolymers including Acrylates/Beheneth-25 Methacrylate Copolymer and concluded that they are safe in cosmetics and personal care products in the present practices of use and concentration when formulated to be non-irritating to skin.

With the exception of AMP-acrylates copolymer, the acrylates copolymers reviewed by the Expert Panel are all listed in the EU’s Cosmetic Ingredient Database (CosIng) and may be used safely under the rules governing cosmetic products in the European Union. The Expert Panel also discussed the issue of residual solvent that might be present from the production processes of these ingredients. Again, the Expert Panel stressed that the amount of residual solvent should be minimized via GMPs. The Expert Panel was particularly concerned with polymerization in benzene (a known human cancer-causing agent). Because of this, the Expert Panel stipulated that these ingredients should not be polymerized in benzene.