Abstract: A saturated polyester resin composition excellent in impact resistance is prepared by melt kneading (A) 30-58 parts by weight of a saturated polyester resin, (B) 42-70 parts by weight of an epoxy group-containing ethylene copolymer comprising (a) 50-99% by weight of ethylene unit, (b) 0.1-30% by weight of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit, and (c) 0-49% by weight of ethylenically unsaturated ester compound unit, (C) 0.

Abstract: A thermoplastic elastomer composition which is excellent in balance of properties such as mechanical properties and thermal properties and in appearance is prepared by melt-kneading (A) 20-58 parts by weight of a saturated polyester resin and (B) 42-80 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading 100 parts by weight of the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups selected from an amino group, a carboxylic acid anhydride group, a hydroxyl group and a ##STR1## wherein both X and Y are oxygen atoms or sulfur atoms, or either X or Y is an oxygen atom and another is a sulfur atom, or (D) 0.

Abstract: A thermoplastic elastomer composition which is useful for bumper, boot, sound absorbing gear, sports shoes etc. is provided by mixing the following (A)-(D).A: 30-58 parts by wt of saturated polyester resin,B: 42-70 parts by wt of an epoxy group-containing ethylene copolymer ofa) 50-99% by wt of ethylene unit,b) 0.1-30% by wt of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit andc) 0-49% by wt of ethylenically unsaturated ester unitC: 0.01-20 parts by wt of specific polyfunctional compound containing two or more functional groups, andD: 1-30 parts by wt of block copolyether ester elastomer.The amounts of C and D are based on 100 parts of A and B.

Abstract: A thermoplastic elastomer composition which is excellent in balance of properties such as mechanical properties and thermal properties and in appearance is prepared by melt-kneading (A) 20-58 parts by weight of a saturated polyester resin and (B) 42-80 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading 100 parts by weight of the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups selected from an amino group, a carboxylic acid anhydride group, a hydroxyl group and a ##STR1## group wherein both X and Y are oxygen atoms or sulfur atoms, or either X or Y is an oxygen atom and another is a sulfur atom, or (D) 0.

Abstract: A process for producing a reinforced crystalline engineering plastic composition is disclosed, comprising melt-kneading (A) from 60 to 97 parts by weight of a crystalline engineering plastic and (B) from 5 to 100 parts by weight, per 100 parts by weight of the sum of (A) and (C), of glass fibers and melt-kneading the resulting mixture with (C) from 3 to 40 parts by weight of an epoxy- or acid anhydride-containing ethylene copolymer. The composition obtained provides, with excellent moldability, a molded article having an improved appearance while exhibiting well-balanced mechanical and thermal properties.

Abstract: An adhesive resin composition is obtained by mixing at least one member (C) selected from the group consisting of unsaturated carboxylic acids and the derivatives thereof, a free-radical initiator (D), and a mixture consisting of a crystalline polyolefin resin (A) and an amorphous or low crystalline olefin copolymer of ethylene and an .alpha.-olefin (B), to obtain a precursor mixture, melt-kneading the precursor mixture in the first half of an extruder having at least one side feeder, to obtain a modified precursor mixture, and feeding a crystalline polyolefin resin (E) from the side feeder of the extruder and mixing the resin (E) with the modified precursor mixture.The adhesive resin composition has good extrudability and exhibits high adhesive property to polar materials such as polar polymeric materials and the like.

Abstract: A polyamide resin composition having a multi-phase structure and a process for producing the same are disclosed, the composition comprising:(A) from 60 to 97 parts by weight of a polyamide resin containing at least 2 parts by weight of (A-1) a polyamide resin having a concentration ratio of terminal carboxyl group to terminal amino group of 1.5 or more,(B) from 3 to 40 parts by weight of an ethylene copolymer comprising:(a) from 40 to 90% by weight of an ethylene unit,(b) from 5 to 60% by weight of an .alpha.,.beta.-unsaturated carboxylic acid alkyl ester unit, and(c) from 0.3 to 10% by weight of a maleic anhydride unit, and(C) from 0.

Abstract: A process for producing a graft copolymer comprising melt-blending:(A) 1 to 90 parts by weight of an ethylene copolymer, based on the weight of the graft copolymer, comprising (a) 40 to 99.9% by weight of ethylene units, (b) 0 to 60% by weight of .alpha.,.beta.-unsaturated carboxylic acid alkyl ester units, and (c) 0.1 to 10% by weight of maleic anhydride units;(B) 0.1 to 10 moles of a lactam metal salt compound per mole of the maleic anhydride units (c) of the ethylene copolymer (A); and(C) 10 to 99 parts by weight of a lactam compound, based on the weight of the graft copolymer,which results in a graft copolymer having high impact strength, high flexibility, satisfactory dyeability, and well-balanced physical properties over a wide temperature range.

Abstract: An impact-resistant polyamide resin is produced bypreparing Mixture (I) by melt-kneading (A) a polyamide resin with (B) at least one modified olefin polymer selected from the group consisting of olefin rubbers having an unsaturated dicarboxylic acid anhydride added thereto, .alpha.-olefin polymers having an unsaturated dicarboxylic acid anhydride added thereto, crystalline ethylene-.alpha.-olefin copolymers having an unsaturated dicarboxylic acid anhydride added thereto, and ethylene-ethylenic unsaturated ester copolymers having an unsaturated dicarboxylic acid anhydride added thereto,preparing Mixture (II) by melt-kneading Mixture (I) with (C) a polyfunctional compound having in the molecule two or more functional groups reactive with carboxyl group, carboxylic acid anhydride group or amino group, andmelt-kneading Mixture (II) with (D) a polyamide resin.

Abstract: An adhesive resin composition is disclosed, comprising:(A) from 2 to 98% by weight of an ethylene copolymer comprising from 50 to 90% by weight of ethylene, from 0 to 49% by weight of an .alpha.,.beta.-unsaturated carboxylic acid alkyl ester, and from 0.5 to 10% by weight of maleic anhydride, with the sum of these monomers being 100% by weight;(B) from 2 to 98% by weight of a crystalline polyethylene resin comprising either an ethylene homopolymer or a copolymer of ethylene and an .alpha.-olefin having 3 or more carbon atoms, with an ethylene content being 90% by weight or more; and(C) from 2 to 50% by weight of a non-crystalline or low crystalline olefin copolymer rubber comprising a copolymer of ethylene and an .alpha.-olefin having 3 or more carbon atoms, with the sum of the components (A), (B) and (C) being 100% by weight.

Abstract: A thermoplastic elastomer composition having a flexural modulus as defined in JIS K7203-1982 of from 500 to 15,000 kg/cm.sup.2, which is obtainable by melt kneading(A) from 20 to 60 parts by weight of a polyamide resin with(B) from 40 to 80 parts by weight of an ethylene copolymer comprising (a) from 40 to 90% by weight of an ethylene unit, (b) from 5 to 60% by weight of an .alpha.,.beta.-unsaturated carboxylic acid alkyl ester unit, and (c) from 0.3 to 10% by weight of a maleic anhydride unit, to obtain a composition (I), and further melt kneading 100 parts by weight of the composition (I) with(C) from 0.01 to 10 parts by weight of magnesium hydroxide having a specific surface area of no more than 20 m.sup.2 /g as measured by the Brunauer-Emmett-Teller method, is disclosed.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (B) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (b) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (B) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (B) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (B) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: Disclosed is a method for producing a thermoplastic resin composition which can be easily molded into articles having good balance in properties and good appearance. Said method comprises melt-kneading (A) 60-97 parts by weight of a saturated polyester resin and (B) 40-3 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups having reactivity with epoxy group, carboxyl group or hydroxyl group to carry out partial crosslinking reaction.

Abstract: A thermoplastic resin composition is disclosed, which is obtained by melt-kneading (A) from 60 to 97 parts by weight of a polyamide resin and (B) from 3 to 40 parts by weight of an ethylene copolymer comprising (a) from 40 to 90% by weight of an ethylene unit, (b) from 5 to 60% by weight of an alkyl .alpha., .beta.-unsaturated carboxylate unit, and (c) from 0.3 to 10% by weight of a maleic anhydride unit and then melt-kneading the resulting composition with (C) from 0.01 to 20 parts by weight of a polyfunctional compound having at least two functional groups having reactivity to a carboxyl group, a carboxylic acid anhydride group or an amino group per molecule to effect partial crosslinking reaction. The composition provides molded articles having a good balance of physical properties and satisfactory appearance.

Abstract: A thermoplastic resin composition having a flexural modulas as defined in ASTM D790 of from 500 to 15,000 kg/cm.sup.2, which is obtainable by partial crosslinking upon melt kneading a mixture comprising:(A) from 20 to 60 parts by weight of a polyamide resin; and(B) from 80 to 40 by weight of an ethylene copolymer comprising (a) from 40 to 90% by weight of an ethylene unit, (b) from 5 to 60% by weight of an .alpha.,.beta.-unsaturated carboxylic acid alkyl ester unit, and (c) from 0.3 to 10% by weight of a maleic anhydride unit or a partially ionized maleic anhydride unit; with(C) from 0.01 to 20 parts by weight, based on 100 parts by weight of the sum of the components (A) and (B), of a polyfunctional compound containing at least two functional groups which are reactive to a carboxyl group, a carboxylic anhydride group, or an amino group, in the molecule thereof, is disclosed.

Abstract: 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.