Crosslinked carboxylic copolymers useful as rheological additives in personal care and pharmaceutical products
Patent 5416158 Issued on May 16, 1995. Estimated Expiration Date: 
February 28, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 28, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSynthetic resin compositions Patent #: 3931085 InventorsAssigneeApplicationNo. 202623 filed on 02/28/1994US Classes:524/760, Carboxylic acid or derivative has two or more ether linkages524/773Carboxylic acid or derivative not containing a heavy metal atom as DNRM, e.g., anhydride, acyl halide, ester or salt, etc.ExaminersPrimary: Smith, JerryAttorney, Agent or FirmForeign Patent References
International ClassC08K 005/04AbstractThe invention relates to crosslinked carboxylic copolymers comprising an unsaturated carboxylic acid; a comonomer containing a polymerizable ethylenically unsaturated group, a crosslinking monomer selected from the group consisting of triallylisocyanurate, triallyl trimellitate, and gIyoxal bis(diallyl acetal) and an ethoxylated glyceride compound. The copolymer provides superior feel and appearance to a large variety of personal care and pharmaceutical products including cosmetics, creams, lotions and lipsticks.Field of SearchOxygen atom other than as part of a carboxylic acid group, e.g., glycolic ester, etc.Carboxylic acid ester linkage, e.g., oxyalkylated sorbitan ester, etc. Carboxylic acid or derivative not containing a heavy metal atom as DNRM, e.g., anhydride, acyl halide, ester or salt, etc. Carboxylic acid or derivative has two or more ether linkages With ester monomer Two or more ester monomers Material contains carboxylic acid, salt, ester, or anhydride thereof | |
