Modified ethylenic random copolymer
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsTatsuo Kinoshita, Syuji Minami
Life of this patent
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Abstract
A modified ethylenic random copolymer derived from 100 parts by weight of base ethylenic random copolymer composed of 25 to 75 mole % of ethylene and 75 to 25 mole % of an alpha-olefin having 3 to 20 carbon atoms and grafted thereto, (a) 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof, (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms, or (c) 0.2 to 300 parts by weight of an unsaturated silane compound having 2 to 20 carbon atoms, said modified ethylenic random copolymer having an intrinsic viscosity [.eta.], measured in decalin at 135.degree. C., of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4.
Claims16
A modified ethylenic random copolymer derived from 100 parts by weight of a base ethylenic random copolymer composed of 25 to 75 mole % of ethylene and 75 to 25 mole % of an alpha-olefin having 3 to 20 carbon atoms and grafted thereto,
- a 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof,
- (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms and represented by the formula ##STR5## wherein R.sup.1 and R.sup.2, independently from each other, represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or
- (c) 0.2 to 300 parts by weight of an unsaturated silane compound represented by the formula ##STR6## wherein one or two of R.sup.3, R.sup.4, R.sup.5 and R.sup.6 represent a vinyl or allyl group, and the remainder represent a hydrogen atom, a lower alkyl group, a lower alkoxy group, a lower alkanoyl group, a lower alkoxyalkoxy group, an aryl group, an aryloxy group, an aralkyl group, or an aralkoxy group, provided that the total number of carbon atoms of R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is in the range of 2 to 20,
- said modified ethylenic random copolymer having an intrinsic viscosity (.eta.), measured in decalin at 135.degree. C., of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4;
- and said base ethylenic random copolymer being liquid and having
- (i) a number average molecular weight (Mn) of 200 to 10,000,
- (ii) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4,
- (iii) a Z value of 10 to 300, and
- (iv) a .sigma. value of 0 to 2.
Dependencies are inferred from the claim text.