Crosslinkable low viscosity star polymer blends
July 12, 2013. 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 ReferencesBlock polymers and their preparation Hydrogenated block copolymers of butadiene containing a block of 1,4 and a block of 1,2-microstructure Asymmetric block copolymers and corresponding adhesive formulations Assymetric block copolymers and corresponding adhesive formulations Bimodal star-block copolymers, showing excellent optical properties and resilience, and process for their manufacture Radiation cured polymer composition Vulcanizable liquid compositions Vulcanizable liquid compositions Epoxidized viscous conjugated diene block copolymers Method of and apparatus for drilling a horizontal controlled borehole in the earth Patent #: 5242026 InventorsAssigneeApplicationNo. 090852 filed on 07/12/1993US Classes:525/314, Block copolymer derived from reactant containing at least two unsaturated groups and is free of an aromatic group524/81, Organic DNRM525/99, With solid polymer derived from reactant containing plural unsaturation525/331.9, Polymer derived from monomer containing at least two ethylenic groups or diene rubber525/332.2Divinyl benzeneExaminersPrimary: Seidleck, James J.Assistant: Clark, W. Robinson H. Attorney, Agent or FirmForeign Patent References
International ClassC08F 297/04AbstractA crosslinkable low viscosity short arm star polymer blend made by anionically polymerizing a conjugated diene and, optionally, a vinyl aromatic hydrocarbon to form living polymer arms and coupling said arms with a coupling agent for star polymers and blending said star polymer with a compatible organic liquid such that the amount of organic liquid in the blend ranges from 5 to 50 percent by weight. A preferred embodiment is an epoxidized version which is selectively epoxidized at the exterior sections of the polymer to enhance the crosslinkability of the polymer.Other References
Field of SearchBlock copolymer derived from reactant containing at least two unsaturated groups and is free of an aromatic groupDivinyl benzene Polymer derived from monomer containing at least two ethylenic groups or diene rubber With solid polymer derived from reactant containing plural unsaturation Organic DNRM | |
