公开(公告)号：US20220356285A1

公开(公告)日：2022-11-10

申请号：US17622640

申请日：2020-07-07

Applicant: DENKA COMPANY LIMITED

Inventor： Soichiro NAKANISHI ,  Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08F234/00 ,  C08L9/06

Abstract: A maleimide based copolymer, manufacturing method thereof, and a resin composition using the maleimide based copolymer is provided. The maleimide based copolymer includes 40 to 60 mass % of aromatic vinyl monomer unit, 5 to 20 mass % of vinyl cyanide monomer unit, 35 to 50 mass % of maleimide monomer unit, and 0 to 10 mass % of monomer copolymerizable with these monomer units. The maleimide based copolymer has a glass transition temperature of 165° C. or higher and a melt mass flow rate of 25 to 80 g/10 min measured at 265° C. with 98 N load. By using such maleimide based copolymer, flowability can be improved without decreasing heat resistance providing ability.

公开(公告)号：US20230250270A1

公开(公告)日：2023-08-10

申请号：US18005028

申请日：2021-06-08

Applicant: Denka Company Limited

Inventor： Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08L25/12

CPC classification number: C08L25/12 ,  C08L2205/03 ,  C08L2205/025

Abstract: A resin composition including a maleimide copolymer (A), a graft copolymer (B), and a vinyl copolymer (C), and with respect to a total amount of 100 parts by mass of the maleimide copolymer (A), the graft copolymer (B) and the vinyl copolymer (C), a total content of the aromatic vinyl monomer unit is 55 to 65 parts by mass, a total content of the vinyl cyanide monomer unit is 15 to 27 parts by mass, a total content of the maleimide monomer unit is 3 to 15 parts by mass, and a total content of the conjugated diene monomer unit is 10 to 20 parts by mass, and the melt mass flow rate under conditions of 220° C. and a load of 98 N is 3 to 23 g/10 min.

公开(公告)号：US20220195094A1

公开(公告)日：2022-06-23

申请号：US17603257

申请日：2020-02-21

Applicant: DENKA COMPANY LIMITED

Inventor： Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08F222/08 ,  C08L55/02 ,  C08L69/00 ,  C08K5/18

Abstract: A thermoplastic resin composition including polycarbonate and ABS resin having superior impact resistance, chemical resistance, flowability, and color phase, and a molded article thereof is provided. A thermoplastic resin composition includes maleimide based copolymer (A) including aromatic vinyl monomer unit, vinyl cyanide monomer unit, and maleimide monomer unit; polycarbonate (B); and at least one resin (C) selected from the group including ABS resin, ASA resin, AES resin, and SAN resin; wherein: the maleimide monomer unit is contained by 0.5 to 10 mass % and the polycarbonate (B) is contained by 20 to 70 mass % in 100 mass % of the thermoplastic resin composition.

公开(公告)号：US20160326360A1

公开(公告)日：2016-11-10

申请号：US15216265

申请日：2016-07-21

Applicant: DENKA COMPANY LIMITED

Inventor： Tetsuo NOGUCHI ,  Takeshi OHTSUKA ,  Masanori MATSUMOTO ,  Yuichi SHINDO

IPC: C08L35/02 ,  C08J5/18 ,  G02B1/04 ,  C08L33/12

CPC classification number: C08L35/02 ,  C08F24/00 ,  C08F212/08 ,  C08F220/10 ,  C08F222/02 ,  C08J5/18 ,  C08J2333/00 ,  C08J2333/12 ,  C08J2335/02 ,  C08J2433/12 ,  C08J2435/02 ,  C08L25/14 ,  C08L33/06 ,  C08L33/08 ,  C08L33/12 ,  C09J133/06 ,  G02B1/04 ,  C08F220/14 ,  C08F222/08

Abstract: A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.

公开(公告)号：US20220195174A1

公开(公告)日：2022-06-23

申请号：US17610049

申请日：2020-07-07

Applicant: DENKA COMPANY LIMITED

Inventor： Tatsuhiro MATSUBARA ,  Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08L53/02 ,  C08F212/10

Abstract: A maleimide based copolymer, manufacturing method thereof, and a resin composition using the maleimide based copolymer is provided. A maleimide based copolymer includes 40 to 60 mass % of aromatic vinyl monomer unit, 5 to 20 mass % of vinyl cyanide monomer unit, 25 to 50 mass % of maleimide monomer unit, 0.1 to 10 mass % of dicarboxylic anhydride monomer unit; wherein the maleimide based copolymer has a glass transition temperature of 165 to 200° C.; and an average number of the dicarboxylic anhydride monomer unit contained in one copolymer molecule is 1 to 30 units. Further, a resin composition is obtained by kneading and mixing the maleimide based copolymer with one or two or more resin selected from the group including ABS resin, ASA resin, AES resin, and SAN resin. The resin composition is superior in the balance of surface glossiness, heat resistance, impact resistance, and flowability.

公开(公告)号：US20220348756A1

公开(公告)日：2022-11-03

申请号：US17764914

申请日：2020-12-09

Applicant: DENKA COMPANY LIMITED

Inventor： Wataru WATANABE ,  Masanori MATSUMOTO

IPC: C08L29/04 ,  C08F16/06

Abstract: A polyvinyl alcohol-based resin composition including a modified vinyl alcohol-based polymer (A) in which a polyoxyalkylene unit represented by a general formula (I) is bonded to a polyvinyl alcohol chain and a modified vinyl alcohol-based polymer (B) having a double bond in a polyvinyl alcohol chain. (In which: R1 and R2 are independently, a methyl group, an ethyl group or a hydrogen atom, and R3 is an alkyl group or a hydrogen atom. N represents a number of repeating units and is an integer of 5≤n≤70.)

公开(公告)号：US20240279372A1

公开(公告)日：2024-08-22

申请号：US18040297

申请日：2021-06-08

Applicant: Denka Company Limited

Inventor： Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08F212/08 ,  B29C65/18 ,  B29K25/00 ,  B29K35/00 ,  B29K79/00 ,  B29K105/00 ,  C08L9/06

CPC classification number: C08F212/08 ,  C08L9/06 ,  B29C65/18 ,  B29K2025/00 ,  B29K2035/00 ,  B29K2079/08 ,  B29K2105/0002 ,  B29K2105/0085 ,  C08L2205/06

Abstract: A maleimide-based copolymer containing: 40% to 65% by mass of an aromatic vinyl-based monomer unit; and 35% to 60% by mass of a maleimide-based monomer unit, in which a residual amount of an aromatic vinyl-based monomer is 200 to 2000 ppm by mass, and a residual amount of a maleimide-based monomer is 30 to 400 ppm by mass.

公开(公告)号：US20230183480A1

公开(公告)日：2023-06-15

申请号：US17920143

申请日：2021-07-20

Applicant: DENKA COMPANY LIMITED

Inventor： Soichiro NAKANISHI ,  Masanori MATSUMOTO ,  Kohei NISHINO

IPC: C08L79/08 ,  B29C45/00 ,  C08L55/02 ,  C08L35/06

CPC classification number: C08L79/08 ,  B29C45/0001 ,  C08L55/02 ,  C08L35/06 ,  B29L2031/3055

Abstract: A maleimide-based copolymer which allows to obtain a resin composition having balanced heat resistance providing property and impact resistance, superior flowabillty, and low yellowness (YI); a maleimide-based copolymer composition using such maleimide-based copolymer; a resin composition.; and an injection molded body are provided. A maleimide-based copolymer, including: aromatic vinyl monomer unit, vinyl cyanide monomer unit, and maleimide monomer unit; wherein: the maleimide-based copolymer has a weight average molecular weight of 50,000 to 110,000; and the maleimide-based copolymer has a mid-point glass transition temperature measured in accordance with JIS K-7121 of 165° C. to 200° C., is provided.