Silicone amphoteric polymers
Patent 5073619 Issued on December 17, 1991. Estimated Expiration Date: 
August 9, 2010. 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.
August 9, 2010. 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 ReferencesPolyquaternary polysiloxane polymers Siloxanes with betaine groups, their synthesis and use in cosmetic preparations Zwitterionic polysiloxane compositions Patent #: 4918210 InventorApplicationNo. 564785 filed on 08/09/1990US Classes:528/26, Organic Si-free reactant is a carboxylic acid or derivative528/28, Organic Si-free reactant is a nitrogen-containing compound556/413Nitrogen attached indirectly to silicon by nonionic bondingExaminersPrimary: Bleutge, John C.Assistant: Hellender, Karen A. International ClassC08G 077/04AbstractThe invention discloses novel organofunctional silicone polymers which have an amphoteric pendant functionality. Compounds of the invention by virtue of their amphoteric structure are good detergents and foaming agents and essentially non irritating to eyes and skin. The compounds of the invention are nonirritating, and non yellowing and provide detergency and foam to many formulated products, including cosmetic and personal care products.The compounds of the present invention are prepared by introduction of a amphoteric group by reaction of acrylic acid or methyl acrylate with a primary alkoxylated amine containing the silicone polymer. |
| ||||||||||||||
