Propylene copolymer resin composition and method for preparing the same

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United States of America Patent

PATENT NO 11345767
APP PUB NO 20210061931A1
SERIAL NO

16960211

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Abstract

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A propylene copolymer resin composition capable of improving softness while maintaining excellent strength properties when preparing nonwoven fabrics, and a method for preparing the same are provided. The propylene copolymer resin composition includes a propylene-ethylene copolymer having an ethylene content of 12 to 18 wt % in the propylene-ethylene copolymer and a propylene-1-butene random copolymer satisfying the following conditions (i) to (iv), wherein (i) 1-butene content of 1 to 5 wt % in the propylene-1-butene random copolymer, (ii) molecular weight distribution of 2.4 or less, (iii) storage modulus of 1200 MPa or less at 25° C., and (iv) phase angle of 5.5° to 8° at a glass transition temperature, and wherein a weight ratio of the propylene-1-butene random copolymer to the propylene-ethylene copolymer is 80:20 to 99:1.

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Patent Owner(s)

Patent OwnerAddress
LG CHEM LTD128 YEOUI-DAERO YEONGDEUNGPO-GU SEOUL 07336

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chae, Seong Min Daejeon, KR 16 7
Jeon, Sangjin Daejeon, KR 25 95
Lee, Hyunsup Daejeon, KR 30 47
Noh, Kyung Seop Daejeon, KR 24 39
Park, Heekwang Daejeon, KR 17 4
Ye, Jihwa Daejeon, KR 10 3

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