Abstract:
An object of the present invention is to provide polypropylene adhesive excellent in both initial adhesion and adhesion after heat history; and a laminate excellent in adhesion and heat resistance. Provided is a polypropylene-based adhesive having an MFR of 2.7 g/10min or higher as measured at 230°C under a load of 2.16 kg, comprising a composition which contains 5-95 parts by weight of (A) an isotactic polypropylene, 95-5 parts by weight of (B) a propylene/ethylene random copolymer, and 0-40 parts by weight of (C) an ethylene/propylene random copolymer, wherein 100 parts by weight of the composition is graft modified with 0.001-5 parts by weight of an unsaturated carboxylic acid and/or a derivative thereof, and wherein (B) is characterized by the following (i) to (iii): (i) the propylene/ethylene random copolymer (B) contains 60-90 mol% units derived from propylene and 10-40 mol% units derived from ethylene; (ii) the melting point (Tm) as measured with a differential scanning calorimeter is in the range of 40-120°C; and (iii) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is in the range of 1.0-3.0.
Abstract:
Polímero de etileno modificado en el que al menos parte del polímero de etileno se modifica por injerto con un ácido carboxílico insaturado o un derivado del mismo, en el que el polímero de etileno modificado tiene una modificación por injerto del 0,15% en peso al 0,40% en peso, y tiene una cantidad de elución en odiclorobenceno a 80ºC o menor tal como se determinada mediante cromatografía de fraccionamiento cruzado que no es más del 10% en peso, y en el que al menos parte del polímero de etileno se obtiene mediante polimerización realizada en presencia de un catalizador de metaloceno.
Abstract:
A modified ethylene polymer having high fuel barrier property and excellent adhesion and mechanical strength, and also uses thereof are provided. The modified ethylene polymer, in which at least part of the ethylene polymer is graft-modified with an unsaturated carboxylic acid or a derivative thereof, has a graft modification of 0.15% by weight to 0.40% by weight, and has an elution amount at 80°C or lower as determined by cross-fractionation chromatography that is not more than 10% by weight.
Abstract:
An object of the present invention is to provide polypropylene adhesive excellent in both initial adhesion and adhesion after heat history; and a laminate excellent in adhesion and heat resistance. Provided is a polypropylene-based adhesive having an MFR of 2.7 g/10min or higher as measured at 230°C under a load of 2.16 kg, comprising a composition which contains 5-95 parts by weight of (A) an isotactic polypropylene, 95-5 parts by weight of (B) a propylene/ethylene random copolymer, and 0-40 parts by weight of (C) an ethylene/propylene random copolymer, wherein 100 parts by weight of the composition is graft modified with 0.001-5 parts by weight of an unsaturated carboxylic acid and/or a derivative thereof, and wherein (B) is characterized by the following (i) to (iii): (i) the propylene/ethylene random copolymer (B) contains 60-90 mol% units derived from propylene and 10-40 mol% units derived from ethylene; (ii) the melting point (Tm) as measured with a differential scanning calorimeter is in the range of 40-120°C; and (iii) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is in the range of 1.0-3.0.
Abstract:
PROBLEM TO BE SOLVED: To provide a propylene-based polymer composition for adhesion, excellent in adhesive properties and further excellent in optical characteristics and drawing properties, and to provide a laminated product containing the same. SOLUTION: This propylene-based polymer composition for adhesion is formed by subjecting 0.001-5 pts.wt. of an unsaturated carboxylic acid and/or its derivative to graft addition to 100 pts.wt. of a composition which contains an isotactic polypropylene (A) in an amount of 50-95 pts.wt. and a propylene-1-butene random copolymer (B) in an amount of 50-5 pts.wt., wherein the copolymer (B) is specified by (i) to (iii) as follows: (i) comprising the propylene-1-butene random copolymer (B) containing units derived from propylene in an amount of 60-90 mol% and units derived from 1-butene in an amount of 10-40 mol%; (ii) having a melting point (Tm) in a range of 40-120°C, when measured by a differential scanning calorimeter; and (iii) having a molecular weight distribution (Mw/Mn) in a range of 1.0-3.0, when measured by gel permeation chromatography (GPC). COPYRIGHT: (C)2006,JPO&NCIPI