Modified polyolefin resin and a composition containing the same
Patent 4762882 Issued on August 9, 1988. Estimated Expiration Date: 
June 26, 2006. 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.
June 26, 2006. 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 ReferencesPreparation of low and medium density ethylene polymer in fluid bed reactor Polymer blend composition for forming polyethylene film Modified polyethylene and laminate thereof Process for the grafting of monomers onto polyolefins Modified elastomer and laminate thereof Patent #: 4619972 InventorsAssigneeApplicationNo. 06/878660 filed on 06/26/1986US Classes:525/74, Mixture contains solid polymer derived from reactant containing oxygen heterocycle525/282, Imide525/285, Cyclic anhydride525/286, Three-membered ring containing two carbon and one chalcogen atom525/288, Ethylenic reactant contains atoms other than C, H, O, N, S, or Cl525/289, Ethylenic reactant contains a fused- or bridged-ring system525/296, Nitrogen atom is part of a carboxylic acid amide group525/301, Oxygen atom is part of a carboxylic acid group525/303, Ester contains an oxygen atom other than as a carboxylic acid ester group525/304, Ester contains at least two carboxylic acid ester groups525/309, Ester derived from an unsaturated carboxylic acid is reacted in the presence of a solid polymer525/71, Contains two or more graft or graft-type copolymers or a graft or a graft type copolymer and at least one block or block-type copolymer525/72, Mixture contains solid polymer derived from reactants containing an atom other than C, H, O, N, or chlorine525/73, Mixture contains solid polymer derived from reactant containing nitrogen heterocycle525/75, Mixture contains solid polymer derived from reactant containing a fused- or bridged-ring system or from cycloaliphatic reactant525/77, Mixture contains solid polymer derived from reactant containing nitrogen other than from (meth)acrylonitrile525/78, Mixture contains solid polymer derived from reactant containing carboxylic acid group525/80, Mixture contains solid polymer derived from reactant containing carboxylic acid ester group525/81Reactant contains at least two ester groupsExaminersPrimary: Seccuro, Carman J.Attorney, Agent or FirmInternational ClassesC08F 255/02 (20060101)C08F 255/00 (20060101) Foreign Application Priority Data1985-07-08 JPAbstractA modified polyolefin resin and a composition containing therein such modified polyolefin, having excellent adhesive property and heat-sealing property at the time of high speed forming operations, the modified polyolefin resin consisting essentially of: a copolymer of ethylene and -olefin having 4 or more carbon atoms, the copolymer having a density in a range of from 0.890 to 0.910 g/cm3, a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) of Mw/Mn=2 to 15, and a product of a melt tension (g) and a melt-index (g/10 min.) of a molten resin measured at 160° C. of 4 or below; and unsaturated carboxylic acid or derivatives thereof grafted on the ethylene type copolymer at a ratio of from 0.01 to 3% by weight. | |
