Polyolefin resin composition containing rosin, rosin derivative or petroleum resin
AssigneeChisso Corporation
InventorsTsutomu Moteki, Kazuo Aoki, Kazuhiro Kimura
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Abstract
A polyolefin resin composition comprising a polyolefin resin and, blended therewith, (A) 10 to 40 wt % of a styrene type resin and (B) 0.5 to wt % of one or more members selected from among rosin, derivatives of rosin and petroleum resins is provided. This composition is excellent in adhesion to a cast foamed polyurethane, etc. and capable of forming a molding product with a low molding shrinkage.
Claims9
A polyolefin resin composition suitable for forming a molded product with superior adhesion to a cast foamed polyurethane but with little molding shrinkage, which composition comprises a blend of
- (1) a polyolefin resin selected from the group consisting of
- (i) a propylene homopolymer,
- (ii) a crystalline copolymer comprising propylene units as the main component and units of one or more alpha-olefins selected from the group consisting of ethylene, butene-1, 4-methylpentene-1, hexene-1, heptene-1, octene-1 and decene-1,
- (iii) an ethylene homopolymer or a crystalline copolymer comprising ethylene units as the main component and units of one or more alpha-olefin selected from the group consisting of propylene, butene-1, 4-methylpentene-1 hexene-1, heptene-1, octene-1 and decene-1 or a mixture thereof,
- (2) 10 to 40 wt. % of a styrene resin selected from the group consisting of
- (i) a polystyrene,
- (ii) an acrylonitrile-butadiene-styrene copolymer,
- (iii) an acrylonitrile-styrene copolymer,
- (iv) a styrene-methylmethacrylate copolymer,
- (v) a styrene-maleic anhydride copolymer and a mixture thereof;
- and
- (3) 0.5 to 5 wt. % of at least one member selected from the group consisting of rosin, derivatives of rosin and petroleum resin, said percentages being by weight of the polyolefin resin composition.
A polyolefin resin composition for forming a molded product with superior adhesion to a cast foamed polyurethane but with little molding shrinkage;
- which comprises a blend of
- (1) a polyolefin resin selected from the group consisting of a
- (i) propylene homopolymer,
- (ii) a crystalline copolymer comprising propylene units as the main component and units of one or more alpha-olefins selected from the group consisting of ethylene, butene-1, 4-methylpenene-1, hexene-1,heptene-1, octene-1 and decene-1,
- (iii) an ethylene homopolymer or a crystalline copolymer comprising ethylene units as the main component and units of one or more alpha-olefins selected from the group consisting of propylene, butene-1,4-methylpentene-1, hexene-1, heptene-1, octene-1, and decene-1, and mixtures thereof;
- (2) 10 to 40 wt. % of a styrene resin selected from the group consisting of
- (i) polystyrene,
- (ii) an acrylonitrile-butadiene-styrene copolymer,
- (iii) an acrylonitrile-styrene copolymer,
- (iv) a styrene methylmethacrylate copolymer, and
- (v) a styrene-maleic anhydride copolymer and a mixture thereof,
- (3) 0.5 to 5 wt. % of at least one member selected from the group consisting of rosin, derivatives of rosin and a petroleum resin,
- (4) 5 to 40 wt. % of a filler, said percentages being by weight of the polyolefin resin composition.
Dependencies are inferred from the claim text.