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1. 发明授权

EP1553107B1 Anti-fouling agent and method for producing the same 有权
标题翻译：防污剂及其制备方法
公开(公告)号：EP1553107B1
公开(公告)日：2008-05-21
申请号：EP04029709.5
申请日：2004-12-15
申请人： Kuraray Co., Ltd.
发明人： Kato, Masaki , Somemiya, Kazuyuki , Kusudou, Takeshi , Fujiwara, Naoki
IPC分类号： C08F8/00 , C08F16/06
CPC分类号： C08F8/12 , C08F218/08 , C08F230/08

2. 发明公开

EP1433794A1 Dispersion stabilizer for suspension polymerization of vinyl compound and method of producing the same 失效
标题翻译：分散稳定剂用于乙烯基系化合物的悬浮聚合，以及它们的制备方法
公开(公告)号：EP1433794A1
公开(公告)日：2004-06-30
申请号：EP03257733.0
申请日：2003-12-09
申请人： Kuraray Co., Ltd.
发明人： Kato, Masaki , Tago, Syunji , Somemiya, Kazuyuki , Sho, Kiyohiko , Katayama, Masako , Nakano, Yoko
IPC分类号： C08F8/00 , C08F16/06 , C08F2/20
CPC分类号： C08F2/20 , C08F8/00 , C08F8/12 , C08F114/06 , C08F118/08 , C08F8/06 , C08F16/06
摘要： The present invention provides a new dispersion stabilizer that satisfies, at a high level, the performances required for a dispersion stabilizer used for suspension polymerization. A method of producing a dispersion stabilizer that is useable for suspension polymerization of a vinyl compound and contains a vinyl alcohol polymer (A) includes producing the vinyl alcohol polymer (A) by heat-treating a vinyl alcohol polymer (B) at a temperature of 90 to 180°C for 0.5 to 20 hours in an atmosphere in which an oxygen concentration is 8000 ppm or lower. The vinyl alcohol polymer (B) has a saponification degree of at least 60 mol% and contains a residual acetic acid group whose block character is in the range of 0.3 to 0.6.
摘要翻译：本发明提供了一种新的分散稳定剂没有SATIS外资企业，在较高的水平，对于用于悬浮聚合用分散稳定剂所要求的性能。制造分散稳定剂没有的一种方法是可用的用于乙烯基系化合物的悬浮聚合，并含有乙烯醇系聚合物（A）包括产生由乙烯醇系聚合物（A）热处理在温度为乙烯醇系聚合物（B） 90在气氛180℃下，在0.5〜20小时，在其中氧浓度为8000 ppm以下。乙烯醇系聚合物（B）具有至少60摩尔％的皂化度，并包含一个残留的乙酸基团是谁的嵌段特征是在0.3至0.6的范围内。

3. 发明授权

EP1433794B1 Dispersion stabilizer for suspension polymerization of vinyl compound and method of producing the same 失效
标题翻译：分散稳定剂用于乙烯基系化合物的悬浮聚合，以及它们的制备方法
公开(公告)号：EP1433794B1
公开(公告)日：2008-02-20
申请号：EP03257733.0
申请日：2003-12-09
申请人： KURARAY CO., LTD.
发明人： Kato, Masaki , Tago, Syunji , Somemiya, Kazuyuki , Sho, Kiyohiko , Katayama, Masako , Nakano, Yoko
IPC分类号： C08F8/00 , C08F16/06 , C08F2/20
CPC分类号： C08F2/20 , C08F8/00 , C08F8/12 , C08F114/06 , C08F118/08 , C08F8/06 , C08F16/06

4. 发明公开

EP1553107A1 Anti-fouling agent and method for producing the same 有权
标题翻译： FäulnisverhinderndesMittel und dessen Herstellung
公开(公告)号：EP1553107A1
公开(公告)日：2005-07-13
申请号：EP04029709.5
申请日：2004-12-15
申请人： Kuraray Co., Ltd.
发明人： Kato, Masaki , Somemiya, Kazuyuki , Kusudou, Takeshi , Fujiwara, Naoki
IPC分类号： C08F8/00 , C08F16/06
CPC分类号： C08F8/12 , C08F218/08 , C08F230/08
摘要： Disclosed is an anti-fouling agent which is superior in viscosity stability, water resistance of its film and ability of preventing a scale from depositing on the inner wall of a polymerization reactor and which can prevent the contamination of foreign substances into a polymeric product caused by exfoliation of a scale depositing on the inner wall of a polymerization reactor and exfoliation of the anti-fouling agent itself,
the anti-fouling agent comprising an aqueous solution containing a polyvinyl alcohol that is obtained through saponification of a polyvinyl ester that contains monomer units having a specific silyl group and that satisfies the following formulae (I) and (II):

370

wherein P indicates the viscosity-average degree of polymerization of the polyvinyl alcohol,
and S indicates the content (mole%) of the monomer units having a silyl group of formula (1) in the polyvinyl alcohol;

0.2/100 ≤ (A-B)/(B) ≤ 75/100 (II)

wherein A indicates the content (ppm) of silicon atoms in the polyvinyl alcohol,
and B indicates the content (ppm) of silicon atoms in the polyvinyl alcohol that was washed with sodium hydroxide-containing methanol and then washed with methanol by Soxhlet extraction.
摘要翻译：公开了一种抗粘结剂，其粘度稳定性优异，其耐水性和防止水垢沉积在聚合反应器内壁上的能力，并且能够防止外来物质被聚合产物污染在聚合反应器的内壁上沉积的垢的剥离和防污剂本身的剥离，防污剂包含含有聚乙烯醇的水溶液，所述水溶液是通过使含有单体单元的聚乙烯基酯皂化得到的，特定的甲硅烷基，其满足下式（I）和（II）：370

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