	US 12,221,529 B2
	Ethylene copolymer composition and use thereof
Tatsuya Sakai, Chiba (JP); Kiminori Noda, Mobara (JP); and Nozomi Kamiya, Chiba (JP)
Assigned to MITSUI CHEMICALS, INC., (JP)
Appl. No. 17/770,859
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Oct. 20, 2020, PCT No. PCT/JP2020/039320 § 371(c)(1), (2) Date Apr. 21, 2022, PCT Pub. No. WO2021/085225, PCT Pub. Date May 6, 2021.
Claims priority of application No. 2019-196473 (JP), filed on Oct. 29, 2019.
Prior Publication US 2022/0372260 A1, Nov. 24, 2022
Int. Cl. C08L 23/08 (2006.01); A43B 13/04 (2006.01); B32B 5/18 (2006.01); C08J 9/00 (2006.01); C08J 9/10 (2006.01); C08J 9/36 (2006.01); C08L 23/16 (2006.01)

CPC C08L 23/0853 (2013.01) [A43B 13/04 (2013.01); B32B 5/18 (2013.01); C08J 9/0061 (2013.01); C08J 9/103 (2013.01); C08J 9/365 (2013.01); C08L 23/16 (2013.01); B32B 2266/0221 (2013.01); B32B 2266/025 (2013.01); B32B 2305/022 (2013.01); B32B 2437/02 (2013.01); C08J 2201/026 (2013.01); C08J 2203/04 (2013.01); C08J 2323/08 (2013.01); C08J 2323/16 (2013.01); C08J 2423/08 (2013.01); C08J 2423/16 (2013.01); C08L 2203/14 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)]

17 Claims

1. An ethylene copolymer composition comprising:

an ethylene copolymer (A) which is a copolymer obtained by copolymerizing only ethylene and an α-olefin having 3 to 20 carbon atoms and which satisfies all the following requirements (A-a), (A-b), (A-c) and (A-d),

ethylene/α-olefin having 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (B), and

an ethylene/polar monomer copolymer (C);

wherein a mass ratio [(A)/(C)] between the ethylene copolymer (A) and the ethylene/polar monomer copolymer (C) is in the range of 1/99 to 19/81;

(A-a) a vinyl group content per 1,000 carbon atoms as determined by ¹H-NMR is in the range of 0.025 to 0.3,

(A-b) a ratio MFR₁₀/MFR_2.16is in the range of 7 to 20 (wherein MFR₁₀is a melt flow rate as measured at 190° C. and at a load of 10 kg by a method according to ASTM D1238, and MFR_2.16is a melt flow rate as measured at 190° C. and at a load of 2.16 kg by a method according to ASTM D1238),

(A-c) a density is in the range of 0.850 to 0.910 g/cm³, and

(A-d) a melt flow rate (MFR_2.16) as measured at 190° C. and at a load of 2.16 kg by a method according to ASTM D1238 is in the range of 0.01 to 200 g/10 min.