Heat-resistant rubber compositions
Patent 5278204 Issued on January 11, 1994. Estimated Expiration Date: 
November 13, 2012. 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.
November 13, 2012. 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 3795646 Filler-containing polypropylene resin composition and process for producing the same Patent #: 4764546 InventorsAssigneeApplicationNo. 975955 filed on 11/13/1992US Classes:523/212, Product having a silicon atom as part of an organic compound523/213, Silicon containing organic material having an atom other than Si, C, H, or oxygen524/267, Two or more Si atoms and at least one Si-C or Si-H group524/269Solid polymer derived from ethylenic reactants onlyExaminersPrimary: Marquis, Melvyn I.Attorney, Agent or FirmForeign Patent References
International ClassC08K 009/06Foreign Application Priority Data1987-10-20 JPAbstractDisclosed is a heat-resistant rubber composition comprising (A) 100 parts by weight of an ethylene/-olefin copolymer or a modified ethylene/-olefin copolymer formed by graft-copolymerization with at least one compound selected from the group consisting of unsaturated carboxylic acids and anhydrides and esters thereof, and (B) (i) 10 to 100 parts by weight of a silica type filler which has been treated with a silane compound represented by the following formula: ##STR1## wherein R1 stands for an alkenyl group, a chloroalkenyl group or a chloroalkyl group, and R2 stands for a lower alkyl group, or (ii) a combination of 10 to 100 parts by weight of said silane-treated silica type filler or an untreated silica type filler and 0.5 to 30 parts by weight of a polyorganosiloxane having an average composition represented by the following formula:(R3)a (R4)b SiO.sub.(4-a-b)/2 (II)wherein R3 stands for a monovalent saturated or unsaturated hydrocarbon group, R4 stands for a chloroalkyl group or an alkenyl group, a is a number of from 1 to 2.5 and b is a number of from 0.01 to 1.2, with the proviso that the sum of a and b is in the range of from 1.8 to 3. | |
