Process for preparing silicone microparticles
Patent 4370160 Issued on January 25, 1983. Estimated Expiration Date: 
January 25, 2000. 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.
January 25, 2000. 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 References 3257330 3551346 3576760 3726710 3816282 3873499 Radiation-curable mercaptoalkyl vinyl polydiorganosiloxanes, method of coating there with and coated article UV curable composition Ketoxime carbamates Patent #: 4118389 InventorAssigneeApplicationNo. 05/919588 filed on 06/27/1978US Classes:504/323, Oxygen is bonded directly to the benzene ring and is part of an acyclic chain between the benzene ring and a -C(=O)O- group (e.g., 2,4-dichlorophenoxyacetic acids, etc.)264/4.1, Liquid encapsulation utilizing an emulsion or dispersion to form a solid-walled microcapsule (includes liposome)424/497, Containing solid synthetic polymers424/94.3, Stabilized enzymes or enzymes complexed with nonenzyme (e.g., liposomes, etc.)424/94.6, Hydrolases (3. ) (e.g., urease, lipase, asparaginase, muramidase, etc.)504/359, Microencapsulating or encapsulating agent514/164, With organic oxygen containing compound514/568, Benzene ring nonionically bonded514/640, Oximes (i.e., C=N-O-)516/55, The agent contains organic compound containing silicon524/862With ethylenically unsaturated reactantExaminersPrimary: Lovering, Richard D.Attorney, Agent or FirmInternational ClassesA01N 25/28 (20060101)A01N 25/26 (20060101) A61K 9/16 (20060101) A61K 9/50 (20060101) B01J 13/06 (20060101) B01J 13/14 (20060101) AbstractMicroparticles, such as microspheres and microcapsules, comprising a solid organopolysiloxane are prepared by irradiating a dispersion of discrete entities with ultraviolet light. The discrete entities are dispersed in a UV-transparent fluid continuous phase and are sphere-like particles of a UV-curable, liquid organopolysiloxane composition, or such a liquid organopolysiloxane composition containing a material to be encapsulated. The microparticles may be elastomeric or resinous and are useful as filler particles and time-release capsules. | |
