| CPC C08F 255/04 (2013.01) [C08F 255/10 (2013.01)] | 10 Claims |
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1. A modified polyolefin resin, comprising a graft-modified product in which a component (A) that is a polyolefin resin is graft-modified with a component (B) that is an α,β-unsaturated carboxylic acid or a derivative thereof, and having
a tensile modulus of 250 MPa or higher, and
a weight-average molecular weight of 70,000 to 200,000,
wherein the tensile modulus is a value measured with the following condition: the polyolefin resin or modified polyolefin resin that has been previously dried is dissolved by heating into an organic solvent; then, the solution thus obtained is applied onto releasing paper so as to form a film with a thickness of about 20 μm; after this is dried for 5 minutes with a blowing dryer whose temperature is set to 100° C., the result is kept for 24 hours under constant temperature and constant humidity conditions at 23° C. and a relative humidity of 50; next, this is cut to a width of 15 mm and a length of 150 mm; then, the releasing paper is removed to obtain a test film; for the test film thus obtained, the tensile modulus is measured with a tensile measurement instrument under the conditions of a pulling speed of 10 mm/minute and a distance between the chucks of 100 mm.
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