发明名称 |
Method for producing cationic surface sizing agent, and sizing agent obtained by method |
摘要 |
The present invention relates to a method for producing a cationic surface sizing agent, and contains a first step of obtaining a copolymer (A) by solution-polymerizing a monomer mixture which contains a monomer having a tertiary amino group (a) in the amount of 15 to 45% by weight, a (meth)acrylic acid ester (b) in the amount of 15 to 85% by weight, and styrenes (c) in the amount of 0 to 70% by weight in the presence of a chain transfer agent; a second step of obtaining a copolymer (B) by polymerizing the copolymer (A) and a nonionic hydrophilic monomer (d); a third step of obtaining a copolymer (C) by polymerizing the copolymer (B) and a hydrophobic monomer (e) in the absence of a surfactant; and a fourth step of obtaining a quaternary ammonium salt of the copolymer (C) by quaternizing a tertiary amino group present in the copolymer (C). |
申请公布号 |
US9303361(B2) |
申请公布日期 |
2016.04.05 |
申请号 |
US201114007917 |
申请日期 |
2011.08.18 |
申请人 |
HARIMA CHEMICALS, INC. |
发明人 |
Sodeyama Takuji;Hayashi Yoko;Inaoka Kazushige |
分类号 |
D21H21/16;C09D133/14;D21H17/37;D21H17/45;D21H19/20;D21H17/35;D21H21/52 |
主分类号 |
D21H21/16 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. A method for producing a cationic surface sizing agent comprising a first step of obtaining a copolymer (A) by solution-polymerizing a monomer mixture which comprises a monomer having a tertiary amino group (a) in the amount of 15 to 45% by weight, a (meth)acrylic acid ester (b) in the amount of 15 to 85% by weight, and styrenes (c) in the amount of 0 to 70% by weight in the presence of a chain transfer agent;
a second step of obtaining a copolymer (B) by polymerizing the copolymer (A) and a nonionic hydrophilic monomer (d); a third step of obtaining a copolymer (C) by polymerizing the copolymer (B) and a hydrophobic monomer (e) in the absence of a surfactant; and a fourth step of obtaining a quaternary ammonium salt of the copolymer (C) by quaternizing a tertiary amino group present in the copolymer (C). |
地址 |
Hyogo JP |