US 11,718,739 B2
Thermoplastic resin composition and molded article produced therefrom
Dong Hui Chu, Uiwang-si (KR)
Assigned to Lotte Chemical Corporation, Seoul (KR)
Appl. No. 17/43,035
Filed by LOTTE CHEMICAL CORPORATION, Seoul (KR)
PCT Filed Mar. 5, 2019, PCT No. PCT/KR2019/002541
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/190068, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 10-2018-0037016 (KR), filed on Mar. 30, 2018.
Prior Publication US 2021/0032451 A1, Feb. 4, 2021
Int. Cl. C08L 23/12 (2006.01); C08K 3/22 (2006.01); C08L 23/16 (2006.01)
CPC C08L 23/12 (2013.01) [C08K 3/22 (2013.01); C08L 23/16 (2013.01); C08K 2003/2296 (2013.01); C08K 2201/005 (2013.01); C08K 2201/006 (2013.01); C08L 2203/02 (2013.01)] 8 Claims
 
1. A thermoplastic resin composition comprising:
about 100 parts by weight of a base resin comprising about 65 wt % to about 95 wt % of a polypropylene resin and about 5 wt % to about 35 wt % of a polyolefin copolymer resin, wherein the polyolefin copolymer resin comprises an ethylene-α-olefin copolymer resin, a propylene-α-olefin copolymer resin, an epoxy-modified polyolefin copolymer resin, and/or a maleic anhydride-modified polyolefin copolymer resin; and
about 0.5 parts by weight to about 10 parts by weight of zinc oxide based on about 100 parts by weight of the base resin,
wherein the zinc oxide has an average particle diameter of about 0.5 μm to about 3 μm, a BET specific surface area of about 1 m2/g to about 10 m2/g, and a peak position degree (20) in the range of about 35° to about 37° and a crystallite size of about 1,000 A to about 2,000 A in X-ray diffraction (XRD) analysis, as calculated by Equation 1:

OG Complex Work Unit Math
where K is a shape factor, λ, is an X-ray wavelength, β is an FWHM value (degree) of an X-ray diffraction peak, and θ is a peak position degree.