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 thermoplastic propylene resin composition of the present invention is obtained
by blending an epoxy group containing copolymer (G) and a rubber-like material (H) and/or a modified rubber-like material (I) with a resin composition composed of a polyamide resin (F) and a polypropylene type resin (E) according to claim 1; by blending a polyamide resin (F), an epoxy group containing copolymer (G) and optionally a polypropylene (C) with a graft resin composition (J) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof onto a mixture of polypropylene (C) and a rubber-like material (H) or; by blending a polyamide resin (F), an epoxy group containing copolymer (G) and optionally a polypropylene (C) with a graft resin composition (J) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof and an unsaturated aromatic monomer onto a mixture of a polypropylene (C) and a rubber-like material (H).
These thermoplastic propylene resin compositions can easily be processed into molded products, films or sheets by injection molding, extrusion molding or the like, giving products which have a good balance in various physical properties and a uniform and smooth appearance. They are suitable for purposes in which especially high heat resistance, impact resistance and low-temperature impact resistance are required.
摘要:
A filler-containing polypropylene resin composition comprises (a) from 27 to 87% by weight of a polypropylene resin, (b) from 3 to 15% by weight of a modified polypropylene resin containing from 0.1 to 3 mol% of an unsaturated dicarboxylic acid anhydride repeating unit, (c) from 5 to 30% by weight of an ethylene copolymer (melt index 0.5 to 800) composed of 82 to 98.7 mol% of an ethylene repeating unit, 1 to 15 mol% of an ester repeating unit which is Cl-8 alkyl acrylate or methacrylate, and from 0.3 to 3 mol% of an unsaturated dicarboxylic acid anhydride repeating unit, and (d) from 5 to 40% by weight of a filler which may have an organosilane coating. The composition can be made by melt-kneading all the components, but preferably by melt-mixing components (a), (b), and (d) and then melt-mixing the resulting mixture with component (c). The resin composition has excellent finishing properties, including adhesion, coating properties, and printability, as well as improved rigidity and thermal properties for use e.g. as automobile parts.
摘要:
A particulate polyolefin expansion molding material comprises a particulate polyolefin having a bulk density of 0.45 g/cc or more and a mean particle size of 150 to 2,000 µ. On the particulate surface of the polyolefin there is provided at least one layer comprising an expanding agent, a binder and a filler. The material can be used for producing expansion molded articles without previous pelletization.
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:
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.