Sodium acrylates/C10-30 alkyl acrylate cross polymer is a chemical compound, a cross-linked alkyl acrylate, a copolymer produced by an emulsion or solution polymerisation reaction. The polymer structure and properties of this ingredient can change depending on a number of variables such as the ratio of comonomers, the level of cross-linking and others.

Sodium Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer used in cosmetics and personal care products for its film former,  thickening, emulsifying, and stabilizing properties. This crosslinked polymer helps to enhance the texture and viscosity of formulations, providing a smooth and luxurious feel on the skin. It is commonly used in creams, lotions, gels, and hair care products, contributing to the overall stability and performance of these formulations.

Chemical Composition and Structure

Sodium Acrylates/C10-30 Alkyl Acrylate Crosspolymer consists of:

• Acrylates: These are derived from acrylic acid and provide the polymer with its thickening and stabilizing properties.
• C10-30 Alkyl Acrylates: Long-chain alkyl groups that enhance the emulsifying properties and overall texture of the polymer.
• Crosslinking Agents: These create a network structure, giving the polymer its unique thickening capabilities and stability.

The structure of the polymer features a three-dimensional network that allows it to absorb water and swell, contributing to its viscosity and thickening abilities.

Physical Properties

• Appearance: Typically a white to off-white powder or gel, depending on the formulation.

• Solubility: Dispersible in water; forms gels when hydrated.

• pH: Generally stable across a range of pH levels, usually around 5-7 in formulation.

• Odor: Generally odorless or mild.

• Stability: Stable under normal storage conditions; should be protected from extreme temperatures.

Production Process

1. Synthesis: Sodium Acrylates/C10-30 Alkyl Acrylate Crosspolymer is synthesized through the polymerization of acrylates and alkyl acrylates in the presence of crosslinking agents. This process is carried out under controlled conditions to ensure the formation of a stable polymer.

2. Purification: The resulting polymer may undergo purification to remove any unreacted monomers and by-products, ensuring high quality.

3. Formulation: The polymer is incorporated into cosmetic formulations, where it acts as a thickening agent and stabilizer, enhancing the overall texture and performance of the products.

Applications

• Medical: Limited use in topical formulations for its thickening and stabilizing properties.

• Cosmetics: Commonly found in creams, lotions, gels, and hair styling products for its ability to improve viscosity and stability. It helps to create a desirable texture and enhances product application.

INCI Functions:

Film-forming agent. It produces a continuous ultra-thin film with an optimal balance of cohesion, adhesion and stickiness on the skin or hair to counteract or limit damage from external phenomena such as chemicals, UV rays and pollution.

• Food: Not typically used in food products; primarily utilized in personal care applications.

• Industrial Uses: May be employed in industrial formulations requiring thickening and stabilizing properties.

Environmental and Safety Considerations

Sodium Acrylates/C10-30 Alkyl Acrylate Crosspolymer is generally regarded as safe for use in cosmetics when applied according to recommended guidelines. It is non-toxic and well-tolerated by most skin types, including sensitive skin. Responsible sourcing and formulation practices are essential to ensure that the ingredient is free from harmful contaminants and produced sustainably.

References__________________________________________________________________________

Bährle-Rapp, Marina, and Marina Bährle-Rapp. "Acrylates/C10–30 Alkyl Acrylate Crosspolymer." Springer Lexikon Kosmetik und Körperpflege (2007): 9-9.