Glyceryl Polymethacrylate is a chemical compound, a polymer.

The name describes the structure of the molecule

• "Glyceryl" is derived from glycerin, a compound known for its moisturizing and humectant properties.
• "Polymethacrylate" refers to a polymer derived from methacrylic acid. 
• "Poly" indicates that there are multiple units of methacrylate linked together in a chain.

Description of raw materials used in production

• Glycerol - A trihydric alcohol commonly derived from vegetable oils.
• Methacrylic Acid - An unsaturated carboxylic acid which forms esters and salts called methacrylates.

Step-by-step summary of industrial chemical synthesis process

• Reagent Preparation - Glycerol and methacrylic acid are purified to remove impurities.
• Esterification - This is the core of the process. In the presence of a catalyst like sulfuric acid, glycerol reacts with methacrylic acid to form an ester.
• Polymerization - The formed esters, now monomers, undergo polymerization. This reaction occurs in the presence of initiators like benzoyl peroxide.
• Neutralization - A base, like sodium hydroxide, may be used to neutralize any acid residues in the product.
• Purification - The solution is purified through methods like dialysis or filtration to remove any unreacted monomers and impurities.
• Drying - Solvents are removed through drying to obtain the solid product.
• Quality Control - Product samples are tested for compliance in terms of molecular weight, purity, and functionality.

It appears as a colorless, viscous liquid.

What it is for and where

Cosmetics

Viscosity control agent. It controls and adapts, Increasing or decreasing, viscosity to the required level for optimal chemical and physical stability of the product and dosage in gels, suspensions, emulsions, solutions.  (1).

CAS   28474-30-8   146126-21-8

IUPAC   2-Propenoic acid, 2-methyl-, homopolymer, ester with 1,2,3-propanetrio

Commercial applications

Cosmetics. Used as a moisturizing agent and to improve product texture.

Skincare Products. Incorporated into formulations to provide moisturization and to form a film on the skin, protecting it from moisture loss.

Anti-aging Products. Added to cosmetics to help diminish the visibility of fine lines due to its film-forming properties.

Makeup Products. Employed in foundations and other cosmetic products to enhance spreadability and longevity.

Haircare Products. Used in conditioners and hair treatments to impart softness and shine.

References____________________________________________________________________

(1) Rossatto, V., Picatonotto, T., Vione, D., & Eugenia Carlotti*, M. (2003). Behavior of some rheological modifiers used in cosmetics under photocatalytic conditions. Journal of dispersion science and technology, 24(2), 259-271.

Abstract. This work studies the photocatalytic degradation of some water‐dispersed rheological modifiers upon UV irradiation of suspended TiO2, an inorganic pigment used as sunscreen in solar creams and gels. The photocatalytic activity of titanium dioxide is a matter of concern in the field of cosmetics, since it causes the undesired photoinduced degradation of organic compounds. The glyceryl polymethacrylate + propylene glycol Lubrajel® DV showed a lower decrease in viscosity than cellulose derivatives upon irradiation in the presence of TiO2, most likely due to higher stability under photocatalytic conditions. As a consequence, use of Lubrajel instead of modified cellulose is preferable when the photocatalytic stability of the rheological modifier is an important issue. Moreover, the degradation of phenol and salicylic acid, chosen as model organic molecules, was studied in the presence of both TiO2 and the modifiers under illumination. The purpose was to assess the photocatalytic activity of titanium dioxide under conditions simulating those of the real cosmetic product. The presence of the rheological modifiers protects both phenol and salicylic acid from photocatalytic degradation.

Bährle-Rapp, M., & Bährle-Rapp, M. (2007). Glyceryl Polymethacrylate. Springer Lexikon Kosmetik und Körperpflege, 228-228.