| 发明名称 |
DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION AND METHOD FOR PRODUCING VINYL RESIN USING SAME |
| 摘要 |
There is provided a dispersion stabilizer for suspension polymerization of a vinyl compound, which is composed of an aqueous emulsion, wherein the aqueous emulsion comprises a solid comprising (A) a polyvinyl alcohol, (B) a polyvinyl ester, and (C) a graft polymer produced by graft-polymerizing a vinyl ester monomer to a polyvinyl alcohol; wherein the amount of (A) the polyvinyl alcohol is 0.1 to 18% by mass based on the total amount of (A), (B) and (C); wherein the amount of (C) the graft polymer is 7 to 80% by mass based on the total amount of (A), (B) and (C); and wherein a weight-average molecular weight of the solid as determined by gel permeation chromatography is 1,100,000 or less. Such a dispersion stabilizer for suspension polymerization exhibits excellent polymerization stability and excellent handleability. In addition, a vinyl resin obtained using the dispersion stabilizer for suspension polymerization has good plasticizer absorbency. |
| 申请公布号 |
US2015274955(A1) |
申请公布日期 |
2015.10.01 |
| 申请号 |
US201314439868 |
申请日期 |
2013.11.01 |
| 申请人 |
KURARAY CO., LTD. |
发明人 |
Fukuhara Tadahito;Kumaki Yosuke |
| 分类号 |
C08L29/04;C08F2/10 |
主分类号 |
C08L29/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A dispersion stabilizer, which comprises an aqueous emulsion,
wherein the aqueous emulsion comprises a solid comprising (A) a polyvinyl alcohol, (B) a polyvinyl ester, and (C) a graft polymer produced by graft-polymerizing a vinyl ester monomer to a polyvinyl alcohol; wherein the amount of (A) the polyvinyl alcohol is 0.1 to 18% by mass based on the total amount of (A), (B) and (C); wherein the amount of (C) the graft polymer is 7 to 80% by mass based on the total amount of (A), (B) and (C); and wherein a weight-average molecular weight of the solid as determined by gel permeation chromatography is 1,100,000 or less. |
| 地址 |
Kurashiki-shi JP |
