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US 5,326,824 AGranted
Syndiotactic propylene copolymer, method for preparing same, and its use
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsTadashi Asanuma, Kazuhiko Yamamoto
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AssigneeMitsui Toatsu Chemicals, Inc.
InventorsTadashi Asanuma, Kazuhiko Yamamoto
Estimating the term…
A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.
A syndiotactic propylene graft copolymer which is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound selected form the group consisting of an unsaturated carboxylic acid, a derivative of an unsaturated carboxylic acid, a hydrolyzable unsaturated silane, styrene, vinyl chloride and vinylidene chloride in the presence of a radical initiator up to the decomposition temperature or more of said radical initiator, the content of radical polymerizable unsaturated compound units grafted on said propylene homopolymer or copolymer being from 0.1 to 50% by weight of said propylene homopolymer or copolymer.
A syndiotactic propylene graft copolymer which is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound selected from the group consisting of an unsaturated carboyxlic acid, a derivative of an unsaturated carboxylic acid and a hydrolyzable unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of said radical initiator, the content of radical polymerizable unsaturated compound units grafted on said propylene homopolymer or copolymer being from 0.1 to 50% by weight of said propylene homopolymer or copolymer.
A syndiotactic propylene graft copolymer which is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound selected from the group consisting of styrene, vinyl chloride and vinylidene chloride in the presence of a radical initiator up to the decomposition temperature or more of said radical initiator, the content of radical polymerizable unsaturated compound units grafted on said propylene homopolymer or copolymer being from 0.1 to 50% by weight of said propylene homopolymer or copolymer.
Dependencies are inferred from the claim text.