(A) 1 to 99 % by weight of a polyphenylene ether resin, (B) 99 to 1 % by weight of a polystyrene resin obtained by copolymerisation of a styrene compound, 100 to 500 ppm by weight of a compound containing a plurality of vinyl groups, and if necessary, a compound copolymerisable with the styrene compound, and/or a polystyrene resin obtained by copolymerisation of a styrene compound, 100 to 500 ppm by weight of a compound containing a plurality of vinyl groups, a rubber, and if necessary, a compound copolymerisable with the styrene compound, and having a weight average molecular weight of 150 thousand to 1 million and a number of branching points in a Z-average molecular weight of 2 to 20, and (C) 0 to 100 parts by weight of a rubber per 100 parts by weight of the total amount of (A) and (B) [wherein, when (B) contains a rubber, said weight of (B) is the weight excluding the weight of said rubber].
According to the present invention, the thermoplastic resin composition having an excellent flowability and an excellent appearance of a molded article obtained can be provided.
摘要:
The thermoplastic resin composition of the present invention comprises:
(a) a resin composition consisting of
(1) at least one polypropylene resin (E) selected from the group consisting of
(i) a graft polypropylene (A) obtained by graft polymerizing an unsaturated carboxylic acid or a derivative thereof onto a polypropylene (C), (ii) a graft polypropylene (B) obtained by graft polymerizing an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto a polypropylene (C), (iii) a composition (D) selected from the group consisting of a composition of a polypropylene (C) and the graft polypropylene (A), a composition of a polypropylene (C) and the graft polypropylene (B), a composition of a polypropylene (C), the graft polypropylene (A) and the graft polypropylene (B), and (2) a saturated polyester resin (F)
(b) an epoxy group-containing copolymer (G), and (c) at least one member selected from the group consisting of
(i) a rubbery substance (H), (ii) a modified rubbery substance (I), and (iii) a mixture of the rubbery substance (H) and the modified rubbery substance (I),
the content of the saturated polyester resin (F) in the thermoplastic resin composition being not more than 50% by weight; or
(a) either a graft resin composition (J) obtained by graft polymerizing an unsaturated carboxylic acid or a derivative thereof onto a mixture of a polypropylene (C) and a rubbery substance (H), or a graft resin composition (K) obtained by graft polymerizing an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto a mixture of a polypropylene (C) and a rubbery substance (H), (b) a saturated polyester resin (F), (c) an epoxy group-containing copolymer (G), and (d) a polypropylene (C); which thermoplastic resin composition is suitably used in the fields where high level of heat resistance, impact resistance, and especially low-temperature impact resistance are required.
摘要:
The thermoplastic resin composition disclosed herein comprises:
(1) a resin composition (F) consisting of
(i) at least one member selected from the group consisting of
(a) a modified polypropylene to which has been graft copolymerized an unsaturated carboxylic acid or the derivative thereof, (b) a modified polypropylene to which have been graft comodified an unsaturated aromatic monomer and either an unsaturated carboxylic acid or the derivative thereof, (c) a mixture of the modified polypropylene (a) and a polypropylene, (d) a mixture of the modified polypropylene (b) and a polypropylene, (e) a modified mixture of a polypropylene and a rubbery substance to which mixture has been graft copolymerized an unsaturated carboxylic acid or the derivative thereof, (f) a modified mixture of a polypropylene and a rubbery substance to which mixture have been graft copolymerized an unsaturated aromatic monomer and either an unsaturated carboxylic acid or the derivative thereof, (g) a mixture of the modified mixture (e) and a polypropylene, and (h) a mixture of the modified mixture (f) and a polypropylene, and
(ii) a thermoplastic copolymer (E) containing acid anhydride moiety of six-membered ring, and
(2) an epoxy group-containing copolymer (G).
The thermoplastic resin composition according to the present invention not only exhibits excellent processability but also produces remarkable advantages in that it gives far better physical properties than those expected from each polymer which constitutes the thermoplastic resin composition of the present invention. The novel resin composition provided by the present invention can be easily processed into molded articles, films and sheets by a molding method generally used for thermoplastic resins such as injection molding, extrusion molding, etc, and can give products which have well-balanced properties among stiffness, heat resistance, impact resistance, scratch resistance, coatability, oil resistance, chemical resistance, water resistance, etc., and which are excellent in appearance uniformity and smoothness. The thermoplastic resin composition of the present invention is particularly suitable for use where well-balanced properties among heat resistance and impact resistance, low-temperature impact resistance in particular, are required.
摘要:
There is disclosed a thermoplastic resin composition comprising a blend of 100 parts by weight of a resin composition composed of 1 to 99% by weight of a polypropylene type resin (C) selected from the group consisting of a modified polypropylene (A) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof and an unsaturated aroamtic monomer onto polypropylene, and a composition composed of the modified polypropylene (A) and a polypropylene (B), and 99 to 1% by weight of at least one sturated polyester resin (D), 0.1 to 300 parts by weiht of an epoxy group containing copolymer (E), 0.1 to 300 parts by weight of a modified ethylenic copolymer ruber (F) obtained by graft copolymerizing and an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto ethylenic copolymer ruber, and Up to 5 partsg by weight of a basic comdpound (G) optionally added as reaction accelerator, the content of the saturted polyester resin in the thermoplastic polyeste4r resin being less than 50% by weight. The thermoplastic resin composition of the present invention has high heat resistance and high impact resistance. in particular, high low-temperatuer impact resistance and is advantgeously used in automobilde parts, electric and electronic parts, etc.
摘要:
A modified polyolefin resin obtained by melt-kneading a mixture consisting of 100 parts by weight of a mixture consisting of
(A) 40-99% by weight of a polyolefin resin having a melt flow rate of 0.05-60 g/10 min and (B) 60-1% by weight of a solid rubber having a number-average molecular weight of 10,000-200,000, (C) 0.1-5 parts by weight of at least one compound selected from the group consisting of unsaturated carboxylic acids, the derivatives thereof and unsaturated epoxy compounds, (D) 0.1-5 parts by weight of an unsaturated aromatic compound and (E) 0.01-2 parts by weight of a free-radical initiator, the molar ratio of (C)/(D) ranging from 1/0.1 inclusive to 1/1 exclusive.
According to the present invention, there is provided a modified polyolefin resin having the following merits:
(1) The amount of bound unsaturated carboxylic acid, a derivative thereof or unsaturated epoxy compound is high. (2) The change of the melt flow rate during the modification is small. (3) The physical properties are of high grade. (4) The coating affinity with urethane coatings and resistance to falling off of the coating layer are excellent.
The modified polyolefin resin of the present invention can be used for adhesives, covering materials, binders, laminate bonding agent and polymer alloy constituents.
摘要:
A thermoplastic resin composition comprising a blend of a resin composition (D) and a copolymer (C) containing epoxy groups, said resin composition (D) being composed of (A) a polypropylene modified by an unsaturated carboxylic acid or anhydride thereof, with or without unmodified polypropylene, and (B) a polyamide resin has excellent physical properties and can be used to provide shaped articles, sheets and films having excellent appearance, uniformity and smoothness.
摘要:
A thermoplastic resin composition which contains a resin composition containing a crystalline polypropylene component, an ethylene-butene-1 copolymer rubber and an ethylene-propylene copolymer rubber; a modified polypropylene; a saturated polyester resin; and an epoxy group-containing copolymer; and optionally talc exhibits high low-temperature impact strength, stiffness and Rockwell hardness and a small coefficient of linear expansion, which composition gives an injection-molded article suitably used for a bumper for automobile.