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1. 发明授权

US4820773A Water absorbent resins prepared by polymerization in the presence of styrene-maleic anhydride copolymers 失效
标题翻译：在苯乙烯 - 马来酸酐共聚物存在下聚合制备的吸水性树脂
公开(公告)号：US4820773A
公开(公告)日：1989-04-11
申请号：US67233
申请日：1987-06-25
申请人： William Alexander , Mark Anderson , Barbara R. Regan
发明人： William Alexander , Mark Anderson , Barbara R. Regan
IPC分类号： A61L15/60 , B01J20/26 , C08F8/32 , C08F220/06 , C08F8/30 , C08F2/00
CPC分类号： C08F220/06 , A61L15/60 , B01J20/26 , C08F8/44 , C08F2800/20 , C08F2810/20
摘要： Improved water-absorbing, crosslinked acrylate resins are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); and (C) a water miscible or a water soluble polyvinyl monomer in the presence of (D) a styrene-maleic anhydride copolymer, neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine, in an amount of 1% to 25% based on the weight of acrylic acid or acrylate, such that the amount of (C) is 0.001 to 0.6 weight percent based on the total weight of (A), (B), (C) and (D). In addition, surface treating the water-absorbing crosslinked acrylate resins with a polyquaternary amine substantially further increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. The untreated and the surface-treated resins also maintain the necessary "dry feel" required for most applications.
摘要翻译：改进的吸水交联丙烯酸酯树脂通过例如用氨和/或苛性碱和/或胺中和的70-100摩尔％的（A）丙烯酸的水聚合制备; （B）丙烯酰胺，摩尔比为70-100摩尔％（A）至30：0摩尔％（B）; 和（C）在（D）苯乙烯 - 马来酸酐共聚物存在下的水混溶性或水溶性聚乙烯基单体，例如用中和的70-100摩尔％，和/或苛性碱和/或胺中和相对于丙烯酸或丙烯酸酯的重量，为1〜25％，（A），（B），（C）和（C）的总重量的（C）的量为0.001〜0.6重量％（D）。此外，用聚季胺对吸水性交联丙烯酸酯树脂的表面处理基本上进一步增加了吸水速率和吸收并被树脂保留的水量。未处理的和表面处理的树脂还保持了大多数应用所需的必要的“干燥感”。

2. 发明授权

US4677174A Water absorbent styrene-acrylic acid copolymers 失效
标题翻译：吸水性苯乙烯 - 丙烯酸共聚物
公开(公告)号：US4677174A
公开(公告)日：1987-06-30
申请号：US854000
申请日：1986-04-21
申请人： William Alexander , Barbara R. Regan , Mark Anderson
发明人： William Alexander , Barbara R. Regan , Mark Anderson
IPC分类号： A61L15/60 , B01J20/26 , C08F220/06 , C08F230/04
CPC分类号： C08F220/06 , A61L15/60 , B01J20/26
摘要： Water absorbing, cross-linked acrylate resin copolymers are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine; with (B) styrene and/or methyl methacrylate in an amount of 1% to 25% based on the weight of acrylic acid or acrylate, and (C) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (C); and (D) a water miscible or a water soluble polyvinyl monomer in an amount of 0.001 to 0.3 weight percent based on the total weight of (A), (B), (C) and (D).
摘要翻译：吸水交联的丙烯酸酯树脂共聚物通过（A）丙烯酸的中和，例如用氨和/或苛性碱和/或胺中和的70-100摩尔％的水性聚合制备; 与丙烯酸或丙烯酸酯的重量相比为1％至25％的（B）苯乙烯和/或甲基丙烯酸甲酯，和（C）摩尔比为70至100摩尔％（A）至30： 0摩尔％（C）; 和（D）基于（A），（B），（C）和（D）的总重量，0.001至0.3重量％的水混溶性或水溶性聚乙烯基单体。

3. 发明授权

US4985518A Process for preparing water-absorbing resins 失效
标题翻译：制备吸水树脂的方法
公开(公告)号：US4985518A
公开(公告)日：1991-01-15
申请号：US389616
申请日：1989-08-04
申请人： William Alexander , Mark Anderson , Barbara R. Regan
发明人： William Alexander , Mark Anderson , Barbara R. Regan
IPC分类号： A61L15/60 , B01J20/26 , C08F8/32 , C08F220/06
CPC分类号： C08F220/06 , A61L15/60 , B01J20/26 , C08F8/32
摘要： A method of preparing a solid water absorbing resin including mixing a monomer solution of (A) acrylic acid neutralized 70-100 mole percent; and (B) a water-miscible to water-soluble polyvinyl monomer in a combined concentration of at least 30 wt. %; with water to form a mixed monomer solution, and adding a thermal initiator and a redox initiator to the mixed monomer solution to form an initiated mixed monomer solution, and wherein the mixed monomer solution is at a temperature below the decomposition temperature of the thermal initiator when the thermal initiator is added to the mixed monomer solution and wherein the temperature of the mixed monomer solution is high enough such that addition of the redox initiator thereto causes sufficient polymerization of the monomers to raise the temperature of the initiated mixed monomer solution to a level sufficient that the thermal initiator decomposes sufficiently to provide, together with the redox initiator, substantially complete polymerization.
摘要翻译：一种制备固体吸水树脂的方法，包括将中和的70-100摩尔％的（A）丙烯酸的单体溶液混合; 和（B）水溶性聚乙烯基单体的水混溶性，其浓度至少为30wt。％; 与水混合以形成混合单体溶液，并向混合单体溶液中加入热引发剂和氧化还原引发剂以形成引发的混合单体溶液，其中混合单体溶液的温度低于热引发剂的分解温度，将热引发剂加入到混合单体溶液中，其中混合单体溶液的温度足够高，使得加入氧化还原引发剂导致单体的充分聚合，从而将引发的混合单体溶液的温度升高到足够的水平热引发剂充分分解以与氧化还原引发剂一起提供基本上完全的聚合。

4. 发明授权

US4755562A Surface treated absorbent polymers 失效
标题翻译：表面处理吸收性聚合物
公开(公告)号：US4755562A
公开(公告)日：1988-07-05
申请号：US872654
申请日：1986-06-10
申请人： William Alexander , Mark Anderson , Barbara R. Regan
发明人： William Alexander , Mark Anderson , Barbara R. Regan
IPC分类号： C08F8/32 , C08F8/44
CPC分类号： C08F8/32
摘要： Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.
摘要翻译：具有多元季胺的表面处理吸水树脂显着增加吸水率和吸收并被树脂保留的水量。除了改进的吸水性能之外，表面处理的树脂保持了大多数应用所需的必要的“干燥感”。

5. 发明授权

US4824901A Surface treated absorbent polymers 失效
标题翻译：表面处理吸收性聚合物
公开(公告)号：US4824901A
公开(公告)日：1989-04-25
申请号：US185853
申请日：1988-04-25
申请人： William Alexander , Mark Anderson , Barbara R. Regan
发明人： William Alexander , Mark Anderson , Barbara R. Regan
IPC分类号： C08F8/32 , C08F8/44
CPC分类号： C08F8/32
摘要： Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.
摘要翻译：具有多元季胺的表面处理吸水树脂显着增加吸水率和吸收并被树脂保留的水量。除了改进的吸水性能之外，表面处理的树脂保持了大多数应用所需的必要的“干燥感”。

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