公开(公告)号：US10998477B2

公开(公告)日：2021-05-04

申请号：US16451706

申请日：2019-06-25

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Tae Gon Kang ,  Chan Moo Park ,  Yoo Jin Jung ,  Jong Cheol Lim ,  Sang Hyun Hong ,  Tae Soo Kim ,  Young Ho Park

IPC: H01L33/60 ,  C08K7/14 ,  C08K3/34 ,  C08K3/22 ,  C08K3/013

Abstract: A polyester resin composition includes: (A) polycyclohexylenedimethylene terephthalate (PCT) resin which is a polymer of terephthalic acid and cyclohexanedimethanol, wherein the cyclohexanedimethanol has a trans/cis isomer ratio of about 2.3 or more; (B) a white pigment, wherein the white pigment is titanium dioxide; and (C) inorganic fillers, wherein the inorganic fillers are glass fibers. A molded article formed from the polyester resin composition can exhibit improved mechanical properties and moldability, and thus can be suitable for light emitting diode (LED) reflectors.

公开(公告)号：US12054609B2

公开(公告)日：2024-08-06

申请号：US17825134

申请日：2022-05-26

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Ki Hong Choi ,  Tae Gon Kang ,  Dong Yeop Shin ,  Ye Seul Shin ,  Sung Woo Yang ,  Seo Yun Lee ,  Dong In Ha

IPC: C08L69/00 ,  C08K3/04 ,  C08K3/34 ,  C08K7/06 ,  C08K7/14 ,  C08L51/04

CPC classification number: C08L69/00 ,  C08K3/04 ,  C08K3/34 ,  C08K7/06 ,  C08K7/14 ,  C08L51/04 ,  C08K2201/005 ,  C08L2201/02 ,  C08L2201/08 ,  C08L2203/20 ,  C08L69/00 ,  C08K3/22 ,  C08K3/34 ,  C08K3/346 ,  C08K5/523 ,  C08L51/04

Abstract: A thermoplastic resin composition comprises: about 100 parts by weight of a polycarbonate resin; about 3 parts by weight to about 20 parts by weight of a rubber-modified aromatic vinyl copolymer resin; about 12 parts by weight to about 28 parts by weight of talc having an average particle size of about 8 μm to about 20 μm and a blackness degree L* of less than about 90; about 5 parts by weight to about 20 parts by weight of acicular inorganic fillers; and about 10 parts by weight to about 30 parts by weight of a phosphorus flame retardant. The thermoplastic resin composition can have good properties in terms of light shielding, impact resistance, dimensional stability, flame retardancy, balance therebetween, and the like.

公开(公告)号：US11708489B2

公开(公告)日：2023-07-25

申请号：US17281004

申请日：2019-12-13

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Hyuk Jin Jeong ,  Joon Hyung Yoo ,  Woo Jin Lee ,  Tae Gon Kang

IPC: C08L69/00 ,  C08L51/04 ,  C08K3/22 ,  C08K5/521 ,  C08K5/524

CPC classification number: C08L69/00 ,  C08K5/521 ,  C08K5/524 ,  C08L51/04 ,  C08K2003/2296 ,  C08K2201/005 ,  C08K2201/006 ,  C08L2205/03 ,  C08L69/00 ,  C08L51/04 ,  C08L51/06 ,  C08K3/22 ,  C08K5/521 ,  C08K5/524

Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 0.1-5 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; approximately 0.1-7 parts by weight of zinc oxide; approximately 0.01-2 parts by weight of a C10-20 alkyl phosphate; approximately 0.01-2 parts by weight of a maleic anhydride-graft polymerized rubber polymer; and approximately 0.01-2 parts by weight of a phosphite-based antioxidant, wherein the zinc oxide has an average particle size of approximately 0.5-3 μm, a specific surface area BET of approximately 1-10 m2/g, a 2θ value as the peak position, of 35-37°, in X-ray diffraction analysis, and a crystallite size, represented by relation 1, of approximately 1,000-2,000 Å. The thermoplastic resin composition has excellent antibacterial properties, weather resistance, impact resistance, heat resistance and the like.

公开(公告)号：US11355683B2

公开(公告)日：2022-06-07

申请号：US16825079

申请日：2020-03-20

Applicant: Lotte Chemical Corporation

Inventor： Tae Gon Kang ,  Chan Moo Park ,  Yoo Jin Jung ,  Yang Il Kim ,  Tae Soo Kim ,  Sang Hyun Hong

IPC: H01L33/60 ,  C08L67/02 ,  C08L51/08 ,  C08L51/06 ,  C08K3/013 ,  C08K7/14 ,  C08L23/08 ,  H01L33/56

Abstract: A thermoplastic resin composition includes: a polyester resin; a white pigment; a core-shell structured impact modifier; and a modified polyolefin resin. Exemplary compositions include polycyclohexylenedimethylene terephthalate (PCT) resin; titanium oxide; a core-shell structured impact modifier obtained by grafting methyl (meth)acrylate to the polydimethylsiloxane rubber core; and an ethylene-methacrylate copolymer. The thermoplastic resin composition is usable for the production of molded article as a reflector or reflector cup for a LED (light-emitting diode) that maintains reflectance at elevated temperature.

公开(公告)号：US11781010B2

公开(公告)日：2023-10-10

申请号：US17317248

申请日：2021-05-11

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Sang Hoon Lee ,  Tae Gon Kang ,  Eun Taek Woo ,  Da Heen Jeong

IPC: C08L69/00 ,  C08L51/08 ,  C08K5/42 ,  C08L51/04 ,  C08K3/08

CPC classification number: C08L69/00 ,  C08K3/08 ,  C08K5/42 ,  C08L51/04 ,  C08L51/085 ,  C08K2003/0825 ,  C08L2201/02 ,  C08L69/00 ,  C08K5/42 ,  C08L51/085

Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 1 part by weight to about 5 parts by weight of a silicone-based rubber modified vinyl graft copolymer; and about 0.03 parts by weight to about 0.2 parts by weight of a metallic salt compound; wherein the metallic salt compound comprises a compound represented by the Formula 1, a compound represented by the Formula 2 and/or a compound represented by the Formula 3 as defined herein. The thermoplastic resin composition can have good properties in terms of impact resistance, impact resistance after ultrasonic welding, flame retardancy, heat resistance, and the like.

公开(公告)号：US11702540B2

公开(公告)日：2023-07-18

申请号：US16770672

申请日：2018-12-28

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Dong In Ha ,  Seung Shik Shin ,  Tae Gon Kang ,  Seung Kap Lee

IPC: C08L69/00 ,  C08F222/06 ,  C08F236/06 ,  C08K3/04 ,  C08K3/34 ,  C08K5/00 ,  C08K5/521 ,  C08L23/16 ,  C08L23/26 ,  C08L25/08 ,  C08L51/04 ,  C08L51/06 ,  C08L55/02

CPC classification number: C08L69/00 ,  C08F222/06 ,  C08F236/06 ,  C08K3/04 ,  C08K3/34 ,  C08K5/0066 ,  C08K5/521 ,  C08L23/16 ,  C08L23/26 ,  C08L25/08 ,  C08L51/04 ,  C08L51/06 ,  C08L55/02 ,  C08K2201/003 ,  C08L2201/02 ,  C08L2203/20 ,  C08L2203/30 ,  C08L2205/025 ,  C08L2205/035 ,  C08L2205/18 ,  C08L2205/22

Abstract: A thermoplastic resin composition of the present invention comprises: a polycarbonate resin; a rubber-modified vinyl-based graft copolymer; a large particle size rubbery polymer having an average particle size of about 400 to about 1,500 nm; an aromatic vinyl-based copolymer resin; a phosphorus-based flame retardant; talc; wollastonite; a maleic anhydride grafted rubbery polymer; and a black pigment. The thermoplastic resin composition is superior in terms of adhesion to metal, strength, flame retardancy, fluidity, and appearance.

公开(公告)号：US11518879B2

公开(公告)日：2022-12-06

申请号：US16882912

申请日：2020-05-26

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Sang Hoon Lee ,  Tae Gon Kang ,  Eun Taek Woo ,  Da Heen Jeong

IPC: C08L69/00 ,  C08L33/12 ,  C08L25/14 ,  C08L33/10 ,  G02B5/02

Abstract: A thermoplastic resin composition comprises about 100 parts by weight of a polycarbonate resin; and about 0.5 parts by weight to about 3 parts by weight of polystyrene-poly(methyl methacrylate) copolymer particles, wherein the polystyrene-poly(methyl methacrylate) copolymer particles include about 41 wt % to about 59 wt % of polystyrene and about 41 wt % to about 59 wt % of poly(methyl methacrylate) and have an average particle diameter of about 3 μm to about 9 μm and a coefficient of variation (CV) of about 20% to about 40%. The thermoplastic resin composition can have good properties in terms of light transmission, light diffusion and balance therebetween.

公开(公告)号：US11674036B2

公开(公告)日：2023-06-13

申请号：US16997995

申请日：2020-08-20

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Da Heen Jeong ,  Tae Gon Kang ,  Eun Taek Woo ,  Sang Hoon Lee ,  Young Ho Park ,  So Hyang Shin

IPC: C08L69/00 ,  C08L67/02 ,  C08L85/02 ,  C08K5/092 ,  C08L67/03

CPC classification number: C08L67/03 ,  C08L67/02 ,  C08L69/00 ,  C08L85/02 ,  C08L67/02 ,  C08L69/00 ,  C08L85/02 ,  C08K5/092 ,  C08L69/00 ,  C08L67/02 ,  C08L85/02 ,  C08K5/092

Abstract: A thermoplastic resin composition comprises: about 100 parts by weight of a polycarbonate resin; about 50 parts by weight to about 250 parts by weight of a polyester resin; about 10 parts by weight to about 200 parts by weight of an aromatic polyphosphonate having a weight average molecular weight of about 65,000 g/mol to about 130,000 g/mol; and about 0.1 parts by weight to about 2 parts by weight of an organic acid comprising citric acid, lactic acid, malic acid, tartaric acid, and/or glycolic acid.

公开(公告)号：US12252612B2

公开(公告)日：2025-03-18

申请号：US17607165

申请日：2020-06-05

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Sang Ki Park ,  Tae Gon Kang

IPC: C08K3/34 ,  C08K5/00 ,  C08K5/49 ,  C08L69/00

Abstract: A thermoplastic resin composition according to the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 5 to about 15 parts by weight of a first rubber-modified vinyl-based graft copolymer in which a monomer mixture is graft-polymerized to a rubber polymer, the monomer mixture containing an aromatic vinyl-based monomer and a cyanovinyl-based monomer; about 2 to about 8 parts by weight of a second rubber-modified vinyl-based graft copolymer in which an alkyl (meth)acrylate-based monomer is graft-polymerized to a rubber polymer; about 0.5 to about 2 parts by weight of a siloxane copolyester; about 17 to about 40 parts by weight of talc; and about 13 to about 23 parts by weight of a phosphorus-based flame retardant, wherein the weight ratio of the first rubber-modified vinyl-based graft copolymer to the second rubber-modified vinyl-based graft copolymer is about 1:0.15 to about 1:0.8, and the weight ratio of the combined weight of the first rubber-modified vinyl-based graft copolymer and the second rubber-modified vinyl-based graft copolymer to the siloxane copolyester is about 1:0.03 to about 1:0.1. The thermoplastic resin composition is excellent in terms of impact resistance, hardness, mar resistance, flame retardancy, physical property balance thereof, and the like.

公开(公告)号：US11987697B2

公开(公告)日：2024-05-21

申请号：US17510569

申请日：2021-10-26

Applicant: LOTTE CHEMICAL CORPORATION

Inventor： Dong Kil Choi ,  Tae Gon Kang ,  Young Mi Kim ,  Eun Taek Woo

IPC: C08L69/00 ,  C08K5/42 ,  C08K5/5399 ,  C08L55/02

CPC classification number: C08L69/00 ,  C08K5/42 ,  C08K5/5399 ,  C08L55/02 ,  C08L2201/02 ,  C08L2203/30 ,  C08L2205/025 ,  C08L2205/035 ,  C08L69/00 ,  C08K5/42 ,  C08K5/5399 ,  C08L51/085 ,  C08L55/02 ,  C08L55/02

Abstract: A thermoplastic resin composition includes: about 100 parts by weight of a polycarbonate resin; about 0.1 parts by weight to about 1.5 parts by weight of a first rubber-modified vinyl graft copolymer including a diene rubber polymer having an average particle diameter of about 50 nm to about 200 nm; about 0.1 parts by weight to about 1.5 parts by weight of a second rubber-modified vinyl graft copolymer including a diene rubber polymer having an average particle diameter of about 250 nm to about 400 nm; about 0.1 parts by weight to about 1.5 parts by weight of a silicone rubber-modified vinyl graft copolymer; about 3 parts by weight to about 15 parts by weight of a phosphazene compound; and about 0.05 parts by weight to about 0.3 parts by weight of an alkali (earth) metal salt of perfluoroalkylsulfonic acid. The thermoplastic resin composition can exhibit good properties in terms of flame retardancy, chemical resistance (post-plating impact resistance), impact resistance, heat resistance, and balance therebetween.