专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1219658B1 POLYOXYTETRAMETHYLENE GLYCOL AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译：聚氧及其制造方法
公开(公告)号：EP1219658B1
公开(公告)日：2006-01-11
申请号：EP00953515.4
申请日：2000-08-18
申请人： Asahi Kasei Kabushiki Kaisha
发明人： KODAMA, Tamotsu , MORI, Takeshi , AKEDO, Takaharu
IPC分类号： C08G65/20 , C08G65/26
CPC分类号： C08G65/30 , C08G65/20 , C08G65/2666
摘要： A polyoxytetramethylene glycol (PTMG) with improved heat resistance and low-viscosity characteristics which has the following properties (1) to (4): (1) the number-average molecular weight is 500 to 3,000; (2) the molecular-weight distribution which is the ratio of the weight-average molecular weight Mw to the number-average molecular weight Mn, Mw/Mn, is 1.8 or less; (3) the content of PTMG molecules having a molecular weight at least 6 times the number-average molecular weight is 2 to 5 wt.% based on the total amount of all the PTMG molecules; and (4) the content of heteropolyacids is 10 to 900 ppb by weight.

2. 发明授权

EP1004610B1 PROCESS FOR PRODUCING TETRAHYDROFURAN POLYMER 有权
标题翻译：用于生产聚四氢呋喃
公开(公告)号：EP1004610B1
公开(公告)日：2004-09-22
申请号：EP99923980.9
申请日：1999-06-09
申请人： Asahi Kasei Kabushiki Kaisha
发明人： AKEDO, Takaharu
IPC分类号： C08G65/20
CPC分类号： C08G65/20 , C08G65/10 , C08G65/2666 , Y10S502/515
摘要： A process for producing a tetrahydrofuran polymer using a heteropolyacid catalyst, in which the heteropolyacid has an aluminum content of 4 ppm or lower.

3. 发明授权

EP1130044B1 METHOD OF REGULATING MOLECULAR WEIGHT DISTRIBUTION OF POLYETHER GLYCOL 有权
标题翻译：调节方法聚醚分子量分布
公开(公告)号：EP1130044B1
公开(公告)日：2004-01-21
申请号：EP99921170.9
申请日：1999-05-19
申请人： Asahi Kasei Kabushiki Kaisha
发明人： AKEDO, Takaharu
IPC分类号： C08G65/20 , C08G65/06 , C08G65/26
CPC分类号： C08G65/2696 , C08G65/20 , C08G65/2666

4. 发明公开

EP1219658A1 POLYOXYTETRAMETHYLENE GLYCOL AND PROCESS FOR PRODUCING THE SAME 有权
标题翻译： VERFAHREN ZU SEINER HERSTELLUNG的POLYOXYTETRAMETHYLINGLYKOL
公开(公告)号：EP1219658A1
公开(公告)日：2002-07-03
申请号：EP00953515.4
申请日：2000-08-18
申请人： Asahi Kasei Kabushiki Kaisha
发明人： KODAMA, Tamotsu , MORI, Takeshi , AKEDO, Takaharu
IPC分类号： C08G65/20 , C08G65/30
CPC分类号： C08G65/30 , C08G65/20 , C08G65/2666
摘要： Disclosed is a high heat resistance and low viscosity polyoxytetramethylene glycol (PTMG) having the following characteristics (1) to (4): (1) a number average molecular weight of from 500 to 3000; (2) a molecular weight distribution of 1.8 or less in terms of the Mw/Mn ratio; (3) a content of high molecular weight PTMG molecules of from 2 to 5 % by weight, wherein the high molecular weight PTMG molecules are PTMG molecules having molecular weights which are at least six times as large as the number average molecular weight of all PTMG molecules; and (4) a heteropolyacid content of from 10 to 900 ppb by weight.
摘要翻译：公开了具有以下特征（1）至（4）的高耐热性和低粘度的聚氧四亚甲基二醇（PTMG）：（1）数均分子量为500至3000; （2）按Mw / Mn比计，分子量分布为1.8以下; （3）2〜5重量％的高分子量PTMG分子的含量，其中高分子量PTMG分子是分子量为所有PTMG数均分子量至少6倍的PTMG分子分子; 和（4）10至900ppb重量的杂多酸含量。

5. 发明公开

EP1130044A1 METHOD OF REGULATING MOLECULAR WEIGHT DISTRIBUTION OF POLYETHER GLYCOL 有权
标题翻译： VERFAHREN ZUR REGULIERUNG DER MOLEKULARGEWICHTSVERTEILUNG VON POLYETHERGLYKOL
公开(公告)号：EP1130044A1
公开(公告)日：2001-09-05
申请号：EP99921170.9
申请日：1999-05-19
申请人： Asahi Kasei Kabushiki Kaisha
发明人： AKEDO, Takaharu
IPC分类号： C08G65/20
CPC分类号： C08G65/2696 , C08G65/20 , C08G65/2666
摘要： A method for controlling the molecular weight distribution of polyether glycol in producing polyether glycol having a specified number average molecular weight by polymerizing tetrahydrofuran as a starting monomer with the use of a heteropoly-acid as a catalyst, which method comprises conducting the polymerization in the presence of an amount of water which can form two phases of the organic phase and a catalyst phase, sampling the polymerization product during the polymerization to determine the molecular weight distribution and, when the molecular weight distribution thus found is narrower than the specified molecular weight distribution, making the residence time distribution of the starting monomer in the catalyst phase wider, while, when the found molecular weight distribution is wider than the specified molecular weight distribution, making the residence time distribution of the starting monomer in the catalyst phase narrower.
摘要翻译：一种通过使用杂多酸作为催化剂聚合四氢呋喃作为起始单体来控制聚醚二醇在制备具有特定数均分子量的聚醚二醇中的分子量分布的方法，该方法包括在存在下进行聚合的一定量的水可以形成有机相和催化剂相的两相，在聚合期间对聚合产物进行取样以确定分子量分布，并且当所发现的分子量分布窄于指定的分子量分布时，使起始单体在催化剂相中的停留时间分布更宽，而当发现的分子量分布大于特定的分子量分布时，使起始单体在催化剂相中的停留时间分布变窄。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式