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US 5,212,239 AGranted
Resin blends containing crystalline propylene polymers and styrenic copolymers
AssigneeArco Chemical Technology, L.P.
InventorRamesh Mallikarjun
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Abstract
Resin blends having improved toughness and resistance to heat deformation are obtained by blending crystalline propylene polymers, random thermoplastic styrenic copolymers containing .alpha.,.beta.-unsaturated dicarboxylic acid anhydride, and amino- or hydroxy-functionalized elastomers. The amino- or hydroxy-functionalized elastomers may be formed in situ by the reaction of anhydride-functionalized elastomers and linking compounds having at least two active-hydrogen containing functional groups such as amino or hydroxyl.
Claims20
A resin blend comprising:
- (a) from about 25 to 80 weight percent of a crystalline propylene polymer;
- (b) from about 5 to 40 weight percent of a random styrenic copolymer comprised of
- (i) from about 50 to 99.5 weight percent of a vinyl aromatic monomer;
- (ii) from about 0.5 to 30 weight percent of a first .alpha.,.beta.-unsaturated dicarboxylic acid anhydride;
- and
- (c) a functionalized elastomer comprised of a base elastomeric polymer and at least one pendent active hydrogen-containing functional group selected from the group consisting of amino and hydroxyl, wherein said base elastomeric polymer is selected from the group consisting of
- (i) random copolymers of ethylene, a C.sub.3 to C.sub.6 olefin, and a diene;
- (ii) conjugated diene polymers and hydrogenated derivatives thereof;
- (iii) block and random copolymers of vinyl aromatic monomers and conjugated dienes and hydrogenated derivatives thereof;
- and
- (iv) random copolymers of ethylene and a C.sub.3 to C.sub.6 olefin.
8 more elements
A resin blend comprising:
- (a) from about 25 to 80 weight percent of a crystalline propylene polymer;
- (b) from about 5 to 40 weight percent of a random styrenic copolymer comprised of
- (i) from about 50 to 99.5 weight percent of a vinyl aromatic monomer;
- (ii) from about 0.5 to 30 weight percent of a first .alpha.,.beta.-unsaturated dicarboxylic acid anhydride;
- and
- (c) from about 2 to 40 weight percent of an anhydride-functionalized elastomer which is an adduct of a second .alpha.,.beta.-unsaturated dicarboxylic acid anhydride and an elastomeric polymer selected from the group consisting of
- (i) random copolymers of ethylene, a C.sub.3 to C.sub.6 olefin, and a diene;
- (ii) conjugated diene polymers and hydrogenated derivatives thereof;
- (iii) block and random copolymers of vinyl aromatic monomers and conjugated dienes and hydrogenated derivatives thereof;
- and
- (iv) random copolymers of ethylene and a C.sub.3 to C.sub.6 olefin;
- and
- (d) from about 0.01 to 5 weight percent of a linking compound having at least two active hydrogen-containing functional groups selected from the group consisting of hydroxyl and amino.
10 more elements
A resin blend comprising:
- (a) from about 25 to 80 weight percent of a crystalline propylene polymer;
- (b) from about 5 to 40 weight percent of a random styrenic copolymer of
- (i) from about 70 to 99.5 weight percent of a vinyl aromatic monomer;
- (ii) from about 0.5 to 30 weight percent of a first .alpha.,.beta.-unsaturated dicarboxylic acid anhydride;
- (c) from about 2 to 40 weight percent of an anhydride-functionalized elastomer comprising an adduct of a second .alpha.,.beta.-unsaturated dicarboxylic acid anhydride and an elastomeric polymer selected from the group consisting of
- (i) random copolymers of ethylene, a C.sub.3 to C.sub.6 olefin, and, optionally, a non-conjugated diene;
- (ii) conjugated diene polymers and hydrogenated derivatives thereof;
- and
- (iii) block and random copolymers of a second vinyl aromatic monomer and a conjugated diene and hydrogenated derivatives thereof;
- and
- (d) from about 0.01 to 5 weight percent of a linking compound having two active hydrogen containing functional groups selected from the group consisting of amino and hydroxyl and having a number average molecular weight of less than about 500.
8 more elements
A resin blend comprising
- (a) from about 40 to 70 weight percent of a crystalline propylene polymer selected from the group consisting of crystalline propylene homopolymers, crystalline propylene-ethylene copolymers, and mixtures thereof;
- (b) from about 10 to 30 weight percent of a random styrenic copolymer of from about 90 to 99 weight percent styrene and from about 1 to 10 weight percent maleic anhydride;
- (c) from about 15 to 35 weight percent of an anhydride-functionalized elastomer comprising an adduct of maleic anhydride and an elastomeric polymer selected from the group consisting of:
- (i) random copolymers of ethylene, propylene, and, optionally, a non-conjugated diene selected from the group consisting of 1,4-hexadiene, 5-ethylidene-2-norbornene, and dicyclopentadiene;
- (ii) butadiene polymers and hydrogenated derivatives thereof;
- and
- (iii) block and random copolymers of styrene and butadiene and hydrogenated derivatives thereof;
- wherein the adduct contains from about 0.1 to 5 weight percent maleic anhydride;
- and
- (d) from about 0.05 to 1.0 weight percent of an aliphatic diamine having a number average molecular weight of less than about 300.
7 more elements
Dependencies are inferred from the claim text.