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1. 发明公开

EP3130611A1 DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION, AND METHOD FOR PRODUCING VINYL RESIN 有权转让
标题翻译： VERFAHREN ZUR HERSTELLUNG VON VINYLHARZ分散剂稳定剂
公开(公告)号：EP3130611A1
公开(公告)日：2017-02-15
申请号：EP15777072.8
申请日：2015-04-08
申请人： Kuraray Co., Ltd. , Kuraray Europe GmbH
发明人： FUKUHARA, Tadahito , KUMAKI, Yosuke , MICHEL, Samuel , HARTMANN, Dirk
IPC分类号： C08F2/20 , C08F2/24 , C08F283/06
CPC分类号： C08F2/20 , C08F2/18 , C08F2/24 , C08F2/30 , C08F14/06 , C08F18/04 , C08F18/08 , C08F283/06 , C08L29/04 , C08L51/00
摘要： Provided is a dispersion stabilizer for suspension polymerization comprising an aqueous emulsion containing a dispersant (A), a dispersoid (B), a graft polymer (C), and an aqueous medium, wherein the dispersant (A) contains a surfactant, the dispersoid (B) contains a polymer having an ethylenically unsaturated monomer unit, the graft polymer (C) is obtained by graft polymerization of the ethylenically unsaturated monomer with the dispersant (A), a mass ratio [A/(A + B + C)] is 0.001 or more and less than 0.18, a mass ratio [C/(A + B + C)] is 0 or more and less than 0.04, and the total content of the dispersant (A), the dispersoid (B), and the graft polymer (C) is 35 to 70 mass%. A vinyl polymer to be obtained by suspension polymerization of a vinyl compound using the dispersion stabilizer has good plasticizer absorption. Further, the number of fish-eyes that occur when the vinyl polymer is formed is small, and the hue deterioration is also suppressed. Further, the dispersion stabilizer also has excellent handleability.
摘要翻译：提供一种悬浮聚合用分散稳定剂，其包含含有分散剂（A），分散质（B），接枝聚合物（C）和水性介质的水性乳液，其中分散剂（A）含有表面活性剂，分散质（ B）含有具有烯键式不饱和单体单元的聚合物，接枝聚合物（C）通过烯属不饱和单体与分散剂（A）的接枝聚合得到，质量比[A /（A + B + C）]为 0.001以上且小于0.18，质量比[C /（A + B + C）]为0以上且小于0.04，分散剂（A），分散质（B）和接枝聚合物（C）为35〜70质量％。通过使用分散稳定剂的乙烯基化合物的悬浮聚合获得的乙烯基聚合物具有良好的增塑剂吸收。此外，形成乙烯基聚合物时发生的鱼眼数量小，并且也抑制了色调劣化。此外，分散稳定剂也具有优异的可操作性。

2. 发明授权

EP3130610B1 VINYL RESIN PRODUCTION METHOD 有权转让
公开(公告)号：EP3130610B1
公开(公告)日：2018-12-05
申请号：EP15776953.0
申请日：2015-04-08
申请人： Kuraray Co., Ltd.
发明人： FUKUHARA, Tadahito , KUMAKI, Yosuke , MICHEL, Samuel , HARTMANN, Dirk
IPC分类号： C08F2/20 , C08F14/00
CPC分类号： C08F114/06 , C08F2/18 , C08F2/20 , C08F14/06 , C08F2400/00
摘要： A dispersion stabilizer in the present invention contains an aqueous emulsion (a) obtained by dispersing a polymer (A) having an ethylenically unsaturated monomer unit in an aqueous medium, a PVA (B) having a degree of saponification of 65 mol% or more and less than 82 mol% and a viscosity-average degree of polymerization of 250 or more and less than 1500, and a PVA (C) having a degree of saponification of 82 mol% or more and less than 98 mol% and a viscosity-average degree of polymerization of 1500 or more and less than 4000. The dispersion stabilizer contains: 7 to 51 mass% of the polymer (A); 40 to 84 mass% of the PVA (B); and 9 to 53 mass% of the PVA (C), with respect to a total amount of the polymer (A), the PVA (B), and the PVA (C). A vinyl resin satisfying required performance can be obtained using the dispersion stabilizer.

3. 发明公开

EP3130610A1 VINYL RESIN PRODUCTION METHOD 有权转让
标题翻译： VINYLHARZHERSTELLUNGSVERFAHREN
公开(公告)号：EP3130610A1
公开(公告)日：2017-02-15
申请号：EP15776953.0
申请日：2015-04-08
申请人： Kuraray Co., Ltd. , Kuraray Europe GmbH
发明人： FUKUHARA, Tadahito , KUMAKI, Yosuke , MICHEL, Samuel , HARTMANN, Dirk
IPC分类号： C08F2/20 , C08F14/00
CPC分类号： C08F114/06 , C08F2/18 , C08F2/20 , C08F14/06 , C08F2400/00
摘要： A dispersion stabilizer in the present invention contains an aqueous emulsion (a) obtained by dispersing a polymer (A) having an ethylenically unsaturated monomer unit in an aqueous medium, a PVA (B) having a degree of saponification of 65 mol% or more and less than 82 mol% and a viscosity-average degree of polymerization of 250 or more and less than 1500, and a PVA (C) having a degree of saponification of 82 mol% or more and less than 98 mol% and a viscosity-average degree of polymerization of 1500 or more and less than 4000. The dispersion stabilizer contains: 7 to 51 mass% of the polymer (A); 40 to 84 mass% of the PVA (B); and 9 to 53 mass% of the PVA (C), with respect to a total amount of the polymer (A), the PVA (B), and the PVA (C). A vinyl resin satisfying required performance can be obtained using the dispersion stabilizer.
摘要翻译：本发明的分散稳定剂含有通过将具有烯键式不饱和单体单元的聚合物（A）分散在水性介质中而得到的水性乳液（a），皂化度为65摩尔％以上的PVA（B）和粘度平均聚合度为250以上且小于1500的PVA（C）和皂化度为82摩尔％以上且小于98摩尔％的PVA（C），粘度平均值聚合度为1500以上且小于4000.分散稳定剂含有：7〜51质量％的聚合物（A）; 40〜84质量％的PVA（B）; 相对于聚合物（A），PVA（B）和PVA（C）的总量，为9〜53质量％的PVA（C）。使用分散稳定剂可以得到满足所需性能的乙烯基树脂。

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