Silicone polymers
Patent 5120812 Issued on June 9, 1992. Estimated Expiration Date: 
October 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.
October 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 ReferencesMethod of modifying the physical properties of urethane elastomers Polysiloxane graft copolymers, flexible coating compositions comprising same and branched polysiloxane macromers for preparing same - II Ether amine fuctional silicone polymers Polyurethane-urea resins with incorporated hydrophobic microparticle fillers Patent #: 5008325 InventorsApplicationNo. 597188 filed on 10/09/1990US Classes:528/28, Organic Si-free reactant is a nitrogen-containing compound528/25, With organic silicon-free reactant528/33, Silicon reactant contains two or more silicon atoms556/414The nitrogen is in an isocyanato or isothiocyanato group (i.e., -NCO or -NCS)ExaminersPrimary: Bleutge, John C.Assistant: Glass, Margaret W. International ClassC08G 077/04AbstractThe present invention provides a novel vinyl silicone monomer which contain urethane functional groups. These materials are used as an intermediates in the preparation of polymers. The vinyl reactive silicone urethane intermediates are prepared by the reaction of hydroxy containing silicone compounds with Benzene-1-(1-isocyanato-1-methylethyl)-3-(1-methylethenyl).Field of SearchOrganic Si-free reactant is a nitrogen-containing compoundSilicon reactant contains two or more silicon atoms FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND With organic silicon-free reactant The nitrogen is in an isocyanato or isothiocyanato group (i.e., -NCO or -NCS) |
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