摘要:
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 transparency is improved due to the graft of unsaturated aromatic compound.
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 which comprises :
(a) 10 to 90 parts by weight of a polyphenylene ether resin, and (b) 90 to 10 parts by weight of a polyamide resin, and per 100 parts by weight of [ (a) + (b) ], (c) 0.01 to 10 parts by weight of a compatibilizer, (d) 0 to 100 parts by weight of a rubber, and (e) 40 to 500 parts by weight of at least one filler selected from α-alumina having a mean particle diameter of 60 µm or less and silicone carbide having purity of 95 % or more and a mean particle diameter of 10 µm or less.
A thermoplastic resin composition having an excellent heat resistance, an excellent mechanical property, an excellent moldability and an excellent impact resistance, and further having an excellent thermal conductivity and an excellent dimensional stability is provided.
摘要:
The thermoplastic resin composition of the present invention contains at least one modified polypropylene resin or resin composition (D) selected from the group consisting of: a modified polypropylene (A) prepared by graft-polymerization of an unsaturated carboxylic acid or a derivative thereof onto a polypropylene (C), a modified polypropylene (B) prepared by graft-polymerization of an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto a polypropylene (C), a modified polypropylene composition (A') prepared by graft-polymerization of an unsaturated carboxylic acid or a derivative thereof onto a mixture of a polypropylene (C) with a rubbery substance (F), and a modified polypropylene composition (B') prepared by graft-polymerization of an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto a mixture of a polypropylene (C) with a rubbery substance (F), and an epoxy group-containing copolymer (E), which thermoplastic resin composition is suitably usable in use where a high-level balance among the properties are required, since said composition has easy processability into molded articles, films sheets and can give products having well balanced properties among stiffness, heat resistance, impact resistance, scratch resistance, coatability, oil resistance, chemical resistance, water resistance, etc., and having excellent appearance uniformity and smoothness.
摘要:
The thermoplastic olefin resin composition of the present invention comprises a resin composition consisting of at least one member selected from the group consisting of a modified polypropylene in which an unsaturated carboxylic acid or a derivative thereof is graft copolymerized onto a polypropylene, a modified polypropylene in which an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer are graft copolymerized onto a polypropylene, a modified polypropylene composition in which an unsaturated carboxylic acid or a derivative thereof is graft copolymerized onto a mixture of a polypropylene and a rubber-like material, and a modified polypropylene composition in which an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer are graft copolymerized onto a mixture of a polypropylene and a rubber-like material, and a polyglutarimide (Component E), and an epoxy group containing copolymer (Component G). The thermoplastic olefin resin composition of the present invention is not only good in molding process-ability but also markedly advantageous in that it can give molded products much superior in physical properties to those obtained from individual polymers constituting the thermoplastic olefin resin composition. The novel thermoplastic olefin resin composition provided according to the present invention can easily be processed into a molded product, a film, a sheet or the like by a molding method usually used for molding thermoplastic resins, for example, injection molding, extrusion molding or the like. Moreover, the product obtained by the processing has a very good balance among stiffness, heat resistance, impact resistance, scratch resistance, coating properties, oil resistance, chemical resistance, water resistance, etc., and a very uniform and smooth appearance. The thermoplastic olefin resin composition of this invention can be advantageously used for a purpose in which especially high heat resistance and impact resistance, in particular, low-temperature impact resistance, are required.
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:
The present invention provides a novel method for producing a filler-containing colored thermoplastic resin composition superior in pigment dispersibility and impact resistance. This method comprises melt kneading firstly at least a part of components of resin consisting of a thermoplastic resin (A) and/or a thermoplastic resin composition (B) with fillers (C), adding remainder of the resin, if any, with a pigment (E), and then further carrying out continuous melt-kneading.
摘要:
The polypropylene composition of the present invention comprises:
a blend of a resin composition composed of a specific polypropylene type resin (C) and at least one saturated polyester resin (D), an epoxy group containing copolymer (E) and at least one rubber selected from the group consisting of an ethylenic copolymer rubber (F), a modified ethylenic copolymer rubber (G) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof onto an ethylenic copolymer rubber and a modified ethylenic copolymer rubber (H) obtained by graft copolymerizing an unsaturated carboxylic acid or derivative thereof .and an unsaturated aromatic monomer onto an ethylenic copolymer rubber, and a basic compound (I) optionally added as a reaction accelerator.
The polypropylene composition according to the present invention is not only good in molding processability but also markedly effective in that it can give molded products superior in physical properties to those obtained from individual polymers constituting the thermoplastic resin composition. The novel polypropylene composition provided by the present invention can easily be processed into a molded product, a film, a sheet or the like by a molding method usually used for molding thermoplastic resins, for example, injection molding, extrusion molding or the like, giving a product which has a very good balance of stiffness, heat resistance, impact resistance, scratch resistance, coating properties, oil resistance, chemical resistance, water resistance, etc., and is ecellent in appearance uniformity and smoothness. It can be advantageously used for purposes requiring especially high heat resistance and impact resistance, in particular, low-temeprature impact resistance.
摘要:
A novel thermoplastic resin composition comprising a blend of a resin composition (D) with a copolymer (C) containing epoxy groups, said resin composition (D) being composed of (A) a polypropylene graft-modified by an unsaturated carboxylic acid or anhydride thereof, with or without unmodified polypropylene, and (B) a saturated polyester resin has excellent physical properties and can be used to provide shaped articles, sheets and films having excellent appearance, uniformity and smoothness.