Idemitsu Kosan Company, Limited

Nozomu Fujii

Masami Kanamaru

Masahiro Kubo

Yutaka Minami

Takuji Okamoto

Asami Koga

A polypropylene-based adhesive containing a polypropylene-based resin (A') prepared by reducing the weight-average molecular weight of a polypropylene-based resin (A) by decomposition, in which the melting endotherm (ΔH-D) of the polypropylene-based resin (A) is 0 J/g or more and 80 J/g or less, as obtained from a melting endothermic curve drawn by holding a sample at −10° C. for 5 minutes in a nitrogen atmosphere followed by heating it at 10° C./min using a differential scanning calorimeter (DSC).

Polypropylene-based adhesive and method for producing same

The present invention relates to a thermoplastic resin composition containing a base polymer containing a propylene-based polymer (A) in which a melting endotherm (ΔH-D) is 0 J/g or more and 60 J/g or less, and a melting point (Tm-D) is not observed or is 0° C. or higher and 120° C. or lower; and a propylene-based polymer (C) in which a melting endotherm (ΔH-D) is 20 J/g or more and 120 J/g or less, and a melting point (Tm-D) is higher than 120° C., the content of the propylene-based polymer (C) being 0.5 parts by mass or more and 100 parts by mass or less relative to 100 parts by mass of the content of the propylene-based polymer (A).

Thermoplastic resin composition and hot-melt adhesive

A polypropylene-based resin composition containing a polypropylene-based resin (A) which has a melting endotherm (&#x394;H-D) of 0 J/g or more and 40 J/g or less and which does not exhibit an observable melting point (Tm-D) or has a melting point (Tm-D) of 0&#xb0; C. or higher and lower than 90&#xb0; C., and a polypropylene-based resin (B) which has a melting endotherm (&#x394;H-D) of more than 40 J/g and 125 J/g or less.

Polypropylene-based resin composition, pellet, and molded object

A polyolefin molded product comprising a resin composition containing (1) from 1 to 30% by mass of an olefin-based polymer having an elastic modulus of from 5 to 450 MPa, (2) a propylene-based polymer having an elastic modulus of 500 MPa or more (the content of the component (2) is the balance), and (3) from 0.0001 to 2% by mass of an additive.

Polyolefin molded product

Disclosed is a polyolefin composition for stretched film including an olefin-based polymer (A) having a melting endotherm (&#x394;H-D), as obtained from a melting endothermic curve which is obtained under a measurement condition of holding a sample at &#x2212;10&#xb0; C. for 5 minutes in a nitrogen atmosphere and then increasing the temperature at a rate of 10&#xb0; C./min with a differential scanning calorimeter (DSC), of 0 to 80 J/g; and an olefin-based polymer (B) having a melting endotherm (&#x394;H-D), as observed under the foregoing measurement condition, of more than 80 J/g, wherein a content of the olefin-based polymer (A) is 0.5% by mass or more and less than 17% by mass relative to a total content of the olefin-based polymer (A) and the olefin-based polymer (B), and the polyolefin composition has a melting endotherm (&#x394;H-D), as observed under the foregoing measurement condition, of 80 to 120 J/g.

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Sumida-ku, Japan

Nozomu Fujii