基本信息:
- 专利标题： カルボキシル基含有共重合体の製造方法
- 专利标题（英）：JP2018203981A - Method for producing a carboxyl group-containing copolymer
- 申请号：JP2018008887 申请日：2018-01-23
- 公开(公告)号：JP2018203981A 公开(公告)日：2018-12-27
- 发明人： 清水 郁雄 , 川田 雄一
- 申请人： 株式会社日本触媒
- 申请人地址： 大阪府大阪市中央区高麗橋4丁目1番1号
- 专利权人： 株式会社日本触媒
- 当前专利权人： 株式会社日本触媒
- 当前专利权人地址： 大阪府大阪市中央区高麗橋4丁目1番1号
- 代理人： 特許業務法人 安富国際特許事務所
- 优先权： JP2017106565 2017-05-30
- 主分类号： C08F2/38
- IPC分类号： C08F2/38 ; C08F290/06 ; C08F220/06
To provide a method for producing the carboxyl group-containing copolymer can be produced efficiently polymer desired weight average molecular weight.
An unsaturated carboxylic acid monomer (A) and the polyalkylene glycol monomer to form a structural unit (b) represented by the formula (1) a monomer component containing a (B) , wherein the polymerization using a chain transfer agent containing a phosphorus atom-containing compound, the polymerization step in the polymerization reaction, the polymerization initiator may be used, the monomer component from the beginning of the polymerization reaction, a chain transfer agent and among the polymerization initiators, for the time of 100% until the end of the addition of those slowest addition is complete, the carboxyl group containing copolymer at least 50% of the time is performed under the conditions of reaction temperature 70 to 90 ° C. Production method.
(R 1 to R
3 are each independently H, methyl; (AO) is an oxyalkylene group; n is 2 to 80 integer; x is an integer from 0 to 2; y is 0 or 1)
.BACKGROUND
信息查询:
EspacenetIPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08F | 仅用碳—碳不饱和键反应得到的高分子化合物 |
| ------C08F2/00 | 聚合工艺过程 |
| --------C08F2/38 | .使用调节剂的聚合，例如链终止剂 |