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1. 发明授权

US06372856B1 Process for producing dip-formed rubber article 有权
公开(公告)号：US06372856B1
公开(公告)日：2002-04-16
申请号：US09760297
申请日：2001-01-16
申请人： Yutaka Ozawa , Hisanori Ohta
发明人： Yutaka Ozawa , Hisanori Ohta
IPC分类号： C08F834
摘要： A dip-formed rubber article is produced by dip-forming a vulcanizable rubber latex composition comprising an unsaturated nitrile-conjugated diene copolymer rubber latex, a sulfur-containing vulcanizer, and at least one vulcanization accelerator selected from (i) dithiocarbamic acid compounds of the formula (1): wherein R1 and R2 independently represent and hydrocarbon group having at least 6 carbon atoms, and (ii) zinc dithiocarbamate compounds of the formula (2): wherein R1 and R2 are as defined above.

2. 发明授权

US06187857B1 Dipping latex composition and rubber articles made therefrom by dipping 有权
标题翻译：浸渍乳胶组合物和由其制成的橡胶制品
公开(公告)号：US06187857B1
公开(公告)日：2001-02-13
申请号：US09230257
申请日：1999-01-22
申请人： Yutaka Ozawa , Hisanori Ohta
发明人： Yutaka Ozawa , Hisanori Ohta
IPC分类号： C08F834
CPC分类号： B29C41/14 , A61L29/042 , C08K5/39 , C08L9/04
摘要： A vulcanizable dip-forming rubber latex composition comprising an unsaturated nitrile-conjugated diene copolymer rubber latex, a sulfur-containing vulcanizer, and a vulcanization accelerator comprising at least one compound selected from (i) dithiocarbamic acid compounds of the formula: and (ii) zinc dithiocarbamate compounds of the formula: wherein R1 and R2 are hydrocarbon groups having at least 6 carbon atoms which may be the same or different, and an optional thiazole compound. A rubber article dip-formed from the rubber latex composition has no crack occurrence, good surface luster and good vulcanization properties, and does not contain a nitrosamine, and therefore, is suitable for medical use.
摘要翻译：一种可硫化浸渍形成橡胶胶乳组合物，其包含不饱和腈共轭二烯共聚物橡胶胶乳，含硫硫化剂和硫化促进剂，其包含至少一种选自（i）下式的二硫代氨基甲酸化合物的化合物：和（ii）具有下式的二硫代氨基甲酸锌化合物：其中R 1和R 2是具有至少6个可以相同或不同的碳原子的烃基和任选的噻唑化合物。由橡胶胶乳组合物浸渍的橡胶制品没有裂纹发生，表面光泽好，硫化性好，不含有亚硝胺，因此适用于医疗用途。

3. 发明授权

US5369166A Copolymer latex, method for preparing the same and use thereof 失效
标题翻译：共聚物胶乳，其制备方法及其用途
公开(公告)号：US5369166A
公开(公告)日：1994-11-29
申请号：US24763
申请日：1993-03-02
申请人： Yutaka Ozawa , Hisanori Ohta
发明人： Yutaka Ozawa , Hisanori Ohta
IPC分类号： C08F236/12 , C08L13/02 , C08L33/06 , C08F4/28
CPC分类号： C08L13/02 , C08F236/12
摘要： A copolymer latex is provided which comprises 30 to 90% by weight of a conjugated diene monomer unit, 9 to 50% by weight of an ethylenically unsaturated nitrile monomer unit, 0.1 to 20% by weight of an ethylenically unsaturated acid monomer unit and 0 to 20% by weight of an other ethylenically unsaturated monomer unit copolymerizable therewith, having a polystyrene-converted weight average molecular weight of 50,000 to 500,000, and containing 45% or less of methyl ethyl ketone insoluble matter. The latex is presented by emulsion polymerization using a polymerization initiator containing a peroxide whose decomposition temperature giving a half-life period of 10 hours is 100.degree. C. or higher and a reducing agent. The latex is used advantageously for dip molding.
摘要翻译：提供了一种共聚物胶乳，其包含30至90重量％的共轭二烯单体单元，9至50重量％的烯键式不饱和腈单体单元，0.1至20重量％的烯属不饱和酸单体单元和0至 20重量％的可与其共聚的其它烯键式不饱和单体单元，聚苯乙烯换算的重均分子量为50,000〜500,000，含有45％以下的甲乙酮不溶物。使用含有过氧化物的聚合引发剂，通过乳液聚合提供胶乳，其分解温度为10分钟的半衰期为100℃以上，还原剂为10以上。胶乳有利地用于浸渍成型。

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