公开(公告)号：US20230039916A1

公开(公告)日：2023-02-09

申请号：US17783184

申请日：2021-10-18

Applicant: LG CHEM, LTD.

Inventor： In Soo KIM ,  Hyung Sub LEE ,  Dae Woo LEE ,  Min Cheol JU ,  Min Seung SHIN ,  Sung Won HONG

IPC: C08F2/18 ,  C08F212/08 ,  C08F220/44 ,  C08F222/40

Abstract: Provided is a polymer production method including: batch-adding a reaction solution including a monomer mixture including a maleimide-based monomer, a vinyl aromatic monomer, and a vinyl cyanide-based monomer and an aqueous solvent to a reactor and initiating polymerization; and carrying out the polymerization while continuously adding the maleimide-based monomer and the aqueous solvent to the reactor, wherein the reaction solution satisfies the above Formula 1.

公开(公告)号：US20220135725A1

公开(公告)日：2022-05-05

申请号：US17428942

申请日：2020-10-06

Applicant: LG CHEM, LTD.

Inventor： Jae Bum SEO ,  Dae Woo LEE ,  Jung Tae PARK ,  Gyu Sun KIM ,  Ji Uk JANG

IPC: C08F279/04 ,  B29B9/06

Abstract: The present invention relates to a method for producing a diene-based graft copolymer resin, and a diene-based graft copolymer resin produced therefrom, the method including: mixing an aromatic vinyl-based monomer, a diene-based rubber polymer, and a polymerization initiator to prepare a first reactant; mixing a vinyl cyan-based monomer and an antioxidant to prepare a second reactant; adding and polymerizing the first reactant and the second reactant into a polymerization reactor to prepare a polymer; and removing unreacted monomers in a devolatilization tank.

公开(公告)号：US20200040115A1

公开(公告)日：2020-02-06

申请号：US16339705

申请日：2018-07-26

Applicant: LG CHEM, LTD.

Inventor： Jae Bum SEO ,  Dae Woo LEE ,  Jung Tae PARK ,  Gyu Sun KIM ,  Ji Uk JANG

IPC: C08F212/08 ,  C08F220/18 ,  C08F220/44 ,  C08F222/40 ,  C08F2/02 ,  C08F6/10 ,  C08F6/28

Abstract: The present invention relates to a copolymer including 20 to 65 wt % of units derived from an alkyl styrene-based monomer; 10 to 40 wt % of units derived from a (meth)acrylate-based monomer; and 20 to 40 wt % of units derived from vinyl cyan-based monomer, based on the total weight of the copolymer, wherein the residual monomer content is 780 ppm or less, and a method for preparing the same.

公开(公告)号：US20170275452A1

公开(公告)日：2017-09-28

申请号：US15508472

申请日：2016-06-17

Applicant: LG CHEM, LTD.

Inventor： Jae Bum SEO ,  Chang Hun HAN ,  Dae Woo LEE ,  Jung Tae PARK ,  Eun Jung CHOI ,  Byoung Il KANG ,  Da Eun SUNG ,  Gyu Sun KIM

IPC: C08L55/02 ,  C08F2/06 ,  C08F2/02 ,  C08F279/02 ,  C08L25/10

CPC classification number: C08L55/02 ,  C08F2/001 ,  C08F2/02 ,  C08F2/06 ,  C08F279/02 ,  C08L25/10 ,  C08F212/08 ,  C08F220/44 ,  C08F222/40

Abstract: The present invention relates to method for preparing a modified acrylonitrile-butadiene-styrene resin having excellent matteness, impact resistance, and heat resistance, as well as having a low total volatile organic compounds content, and to a modified acrylonitrile-butadiene-styrene resin prepared thereby.