POLYPROPYLENE-BASED RESIN COMPOSITION, AND FIBER AND NONWOVEN FABRIC USING SAME

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United States of America Patent

APP PUB NO 20200157327A1
SERIAL NO

16632752

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Abstract

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The present invention relates to [1] a polypropylene-based resin composition satisfying the following requirements (1) and (2) in a differential molecular weight distribution curve which is obtained from measurement by the gel permeation chromatography using polystyrene as a conversion standard, and in which the abscissa represents a logarithmic value log(M) of a molecular weight M, and the ordinate represents a dw/d log(M) value obtained by differentiating a concentration fraction w by the logarithmic value log(M) of the molecular weight:

    (1) In the differential molecular weight distribution curve, a value obtained by integrating the dw/d log(M) values in the range of (5.5≤log(M)) is 25% or less relative to a value obtained by integrating the dw/d log(M) values over the entire range of log(M); and(2) In the differential molecular weight distribution curve, a value obtained by integrating the dw/d log(M) values in the range of (log(M)≤4.5) is more than 10% relative to a value obtained by integrating the dw/d log(M) values over the entire range of log(M).

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU KOSAN CO LTDJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MINAMI, Yutaka Chiba-shi, JP 84 615
SUGIUCHI, Takumi Chiba-shi, JP 6 3
TAKEBE, Tomoaki Chiba-shi, JP 44 228
YABE, Mari Sodegaura-shi, JP 4 2

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