Noveon IP Holdings Corp.

Pmd Holdings Corp.

Harinath B Bathina

Joseph A Chiarelli

Zahid Amjad

Ramiro Galleguillos

Dilip Desai

Jodi A Budrevich

Walter Lang

Disclosed are sunscreen compositions comprising zinc oxide and at least one of an effective amount of carbomer and an effective amount of C to C alkyl acrylate crosspolymers. The compositions most preferably utilize an oil in water emulsion. Also disclosed are related processes for producing and using such compositions.

Sunscreen composition

A novel hydrophilic ampholytic polymer synthesized by reacting polymerizable amino and carboxy functional ethylenically unsaturated monomers, together with a non-ionic hydrophilic monomer, to provide a polymer having a glass transition temperature (T ) above about 50&deg; C., and optionally hydrophobic monomer(s), and cross-linking monomer(s). The copolymer is precipitated from a polymerization media which includes a suitable organic solvent. The resulting copolymer is in the form of a fine powder, with submicron particle size. As such it is suitable for use as a thickener or rheology modifier in personal care formulations, such as shampoo, conditioner, and the like, as a bioadhesive, and for other pharmaceutical applications.

Hydrophilic ampholytic polymer

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Lenexa, KS, United States of America

Harinath B Bathina