公开(公告)号：US5072027A

公开(公告)日：1991-12-10

申请号：US416993

申请日：1989-10-04

申请人： Akihiro Kobayashi ,  Toshio Akima ,  Takayuki Saito ,  Toshiyuki Fujita

发明人： Akihiro Kobayashi ,  Toshio Akima ,  Takayuki Saito ,  Toshiyuki Fujita

IPC分类号： C07C67/03

CPC分类号： C07C67/03

摘要： In a process for producing a methacrylic acid ester by subjecting methyl methacrylate and an alcohol to a transesterification reaction in the presence of a catalyst and a polymerization inhibitor, the filtration time of catalyst and the like can be shortened by making a total water content in the catalyst, alcohol and methyl methacrylate 1000 ppm or less, or the generation of large bubbles during the reaction can be prevented by adding the starting alcohol to the reaction system at the alcohol conversion of 40% or more, or high catalytic activity is obtained even if a secondary or tertiary alcohol is used as a starting material by using as a catalyst that obtained by drying lithium hydroxide monohydrate with heating, these effects being also obtained by combining individual conditions.

摘要翻译： 在通过在催化剂和阻聚剂的存在下使甲基丙烯酸甲酯和醇进行酯交换反应来生产甲基丙烯酸酯的方法中，通过使催化剂等的总含水量可以缩短催化剂等的过滤时间 催化剂，醇和甲基丙烯酸甲酯1000ppm以下，或通过在醇转化率为40％以上时将起始醇加入到反应体系中，可以防止反应期间产生大的气泡，即使得到高催化活性，即使 通过使用通过加热将氢氧化锂一水合物干燥而获得的催化剂，可以使用仲醇或叔醇作为原料，这些效果也通过组合各个条件而获得。

公开(公告)号：US4916255A

公开(公告)日：1990-04-10

申请号：US194347

申请日：1988-05-16

申请人： Akihiro Kobayashi ,  Toshiyuki Fujita ,  Takayuki Saito ,  Toshio Akima

发明人： Akihiro Kobayashi ,  Toshiyuki Fujita ,  Takayuki Saito ,  Toshio Akima

IPC分类号： C07C67/03 ,  C07C69/54

CPC分类号： C07C69/54 ,  C07C67/03

摘要： Methacrylate esters of alcohols having an ether linkage and/or an alicyclic ring can be obtained with no trouble of coloration or polymer formation during the production and for the product. An alcohol having an ether linkage and/or an alicyclic ring is treated with an alkaline substance, and the treated alcohol is caused to react with methyl methacrylate for a transesterification reaction in the presence of an alkaline substance.

公开(公告)号：US20070082960A1

公开(公告)日：2007-04-12

申请号：US11634872

申请日：2006-12-07

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

IPC分类号： C08J9/16

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, the concentration of oxygen in a reaction vessel is kept low at least in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with an expanding agent before or after completion of the polymerization. Preferably, at a polymerization rate of 60% or higher, the concentration of oxygen in the reaction vessel is kept at 7 vol % or lower. When additional styrene monomers are added during the polymerization, they are added and adsorbed to styrene resin particles in the course of polymerization while the concentration of oxygen is kept low. By this method, the particles whose internal portion has a low molecular weight and surface portion has a high molecular weight are obtained. A foamed article produced from the particles has high strength and a good appearance.

公开(公告)号：USRE34061E

公开(公告)日：1992-09-08

申请号：US199775

申请日：1988-05-27

申请人： Hiromasa Kawai ,  Takashi Morinaga ,  Hiromu Miyajima ,  Toshio Akima ,  Mitsuharu Kato ,  Yutaka Hosoi

发明人： Hiromasa Kawai ,  Takashi Morinaga ,  Hiromu Miyajima ,  Toshio Akima ,  Mitsuharu Kato ,  Yutaka Hosoi

IPC分类号： C08F20/18

CPC分类号： C08F20/18

摘要： A polymer obtained by polymerizing tricyclo[5.2.1.0.sup.2,6 ]deca-8-yl acrylate or methacrylate in an amount of 100-5% by weight with one or more copolymerizable unsaturated monomers in an amount of 0 to 95% by weight is excellent in transparency, moisture resistance, and heat resistance and is suitable as a material for optical elements.

公开(公告)号：US20070093563A1

公开(公告)日：2007-04-26

申请号：US11634968

申请日：2006-12-07

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

IPC分类号： C08J9/16

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, the concentration of oxygen in a reaction vessel is kept low at least in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with an expanding agent before or after completion of the polymerization. Preferably, at a polymerization rate of 60% or higher, the concentration of oxygen in the reaction vessel is kept at 7 vol % or lower. When additional styrene monomers are added during the polymerization, they are added and adsorbed to styrene resin particles in the course of polymerization while the concentration of oxygen is kept low. By this method, the particles whose internal portion has a low molecular weight and surface portion has a high molecular weight are obtained. A foamed article produced from the particles has high strength and a good appearance.

摘要翻译： 一种生产可发性苯乙烯树脂颗粒的方法，其中在苯乙烯单体的悬浮聚合中，至少在聚合的后期将反应容器中的氧浓度保持在较低水平，所得到的苯乙烯树脂颗粒用发泡剂 在聚合完成之前或之后。 优选以60％以上的聚合速度将反应容器内的氧浓度保持在7体积％以下。 当在聚合期间加入另外的苯乙烯单体时，它们在聚合过程中被加入并吸附到苯乙烯树脂颗粒上，同时氧气的浓度保持较低。 通过这种方法，可以获得其内部具有低分子量和表面部分的颗粒具有高分子量的颗粒。 由颗粒制成的发泡制品具有高强度和良好的外观。

公开(公告)号：US20050187307A1

公开(公告)日：2005-08-25

申请号：US10985971

申请日：2004-11-12

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Toshio Akima

IPC分类号： C08J9/16 ,  C08J9/00

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, styrene monomers are added to be adsorbed to styrene resin particles in the course of polymerization, while the concentration of oxygen in a reaction vessel is kept at 7 vol % or lower in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with pentane as a foaming agent. The molecular weight in the outside of the particles obtained is selectively higher. The impregnation of pentane enables the particle to have low VOC (low volatile organic compound) properties. Furthermore the expanded particles have excellent appearance and strength since the outside thereof has a high molecular weight.

摘要翻译： 制造可发性苯乙烯树脂颗粒的方法，其中在苯乙烯单体的悬浮聚合中，加入苯乙烯单体以在聚合过程中吸附到苯乙烯树脂颗粒上，同时将反应容器中的氧浓度保持在7体积％或 在聚合的后期较低，所得到的苯乙烯树脂颗粒浸渍有戊烷作为发泡剂。 获得的颗粒外侧的分子量选择性较高。 戊烷的浸渍使得颗粒具有低VOC（低挥发性有机化合物）性质。 此外，由于其外部具有高分子量，所以发泡颗粒具有优异的外观和强度。

公开(公告)号：US06797733B2

公开(公告)日：2004-09-28

申请号：US10430409

申请日：2003-05-07

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

IPC分类号： C08J920

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, the concentration of oxygen in a reaction vessel is kept low at least in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with an expanding agent before or after completion of the polymerization. Preferably, at a polymerization rate of 60% or higher, the concentration of oxygen in the reaction vessel is kept at 7 vol % or lower. When additional styrene monomers are added during the polymerization, they are added and adsorbed to styrene resin particles in the course of polymerization while the concentration of oxygen is kept low. By this method, the particles whose internal portion has a low molecular weight and surface portion has a high molecular weight are obtained. A foamed article produced from the particles has high strength and a good appearance.

摘要翻译： 一种生产可发性苯乙烯树脂颗粒的方法，其中在苯乙烯单体的悬浮聚合中，至少在聚合的后期将反应容器中的氧浓度保持在较低水平，所得到的苯乙烯树脂颗粒用发泡剂 在聚合完成之前或之后。 优选以60％以上的聚合速度将反应容器内的氧浓度保持在7体积％以下。 当在聚合期间加入另外的苯乙烯单体时，它们在聚合过程中被加入并吸附到苯乙烯树脂颗粒上，同时氧气的浓度保持较低。 通过这种方法，可以获得其内部具有低分子量和表面部分的颗粒具有高分子量的颗粒。 由颗粒制成的发泡制品具有高强度和良好的外观。

公开(公告)号：US07241816B2

公开(公告)日：2007-07-10

申请号：US10901970

申请日：2004-07-30

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

IPC分类号： C08J9/00 ,  C08J9/16

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, the concentration of oxygen in a reaction vessel is kept low at least in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with an expanding agent before or after completion of the polymerization. Preferably, at a polymerization rate of 60% or higher, the concentration of oxygen in the reaction vessel is kept at 7 volt % or lower. When additional styrene monomers are added during the polymerization, they are added and adsorbed to styrene resin particles in the course of polymerization while the concentration of oxygen is kept low. By this method, the particles whose internal portion has a low molecular weight and surface portion has a high molecular weight are obtained. A foamed article produced from the particles has high strength and a good appearance.

摘要翻译： 一种生产可发性苯乙烯树脂颗粒的方法，其中在苯乙烯单体的悬浮聚合中，至少在聚合的后期将反应容器中的氧浓度保持在较低水平，所得到的苯乙烯树脂颗粒用发泡剂 在聚合完成之前或之后。 优选地，在60％以上的聚合速度下，反应容器中的氧浓度保持在7伏特以下。 当在聚合期间加入另外的苯乙烯单体时，它们在聚合过程中被加入并吸附到苯乙烯树脂颗粒上，同时氧气的浓度保持较低。 通过这种方法，可以获得其内部具有低分子量和表面部分的颗粒具有高分子量的颗粒。 由颗粒制成的发泡制品具有高强度和良好的外观。

公开(公告)号：US20050004241A1

公开(公告)日：2005-01-06

申请号：US10901970

申请日：2004-07-30

申请人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

发明人： Makoto Kunimi ,  Tetsuya Katou ,  Makoto Saitou ,  Hiroshi Nakaguki ,  Toshio Akima

IPC分类号： C08J9/16

CPC分类号： C08J9/16 ,  C08J2203/14 ,  C08J2325/06

摘要： A process of producing expandable styrene resin particles, wherein in suspension polymerization of styrene monomers, the concentration of oxygen in a reaction vessel is kept low at least in a late stage of the polymerization, and the resulting styrene resin particles are impregnated with an expanding agent before or after completion of the polymerization. Preferably, at a polymerization rate of 60% or higher, the concentration of oxygen in the reaction vessel is kept at 7 volt % or lower. When additional styrene monomers are added during the polymerization, they are added and adsorbed to styrene resin particles in the course of polymerization while the concentration of oxygen is kept low. By this method, the particles whose internal portion has a low molecular weight and surface portion has a high molecular weight are obtained. A foamed article produced from the particles has high strength and a good appearance.

摘要翻译： 一种生产可发性苯乙烯树脂颗粒的方法，其中在苯乙烯单体的悬浮聚合中，至少在聚合的后期将反应容器中的氧浓度保持在较低水平，所得到的苯乙烯树脂颗粒用发泡剂 在聚合完成之前或之后。 优选地，在60％以上的聚合速度下，反应容器中的氧浓度保持在7伏特以下。 当在聚合期间加入另外的苯乙烯单体时，它们在聚合过程中被加入并吸附到苯乙烯树脂颗粒上，同时氧气的浓度保持较低。 通过这种方法，可以获得其内部具有低分子量和表面部分的颗粒具有高分子量的颗粒。 由颗粒制成的发泡制品具有高强度和良好的外观。

公开(公告)号：US4591626A

公开(公告)日：1986-05-27

申请号：US663974

申请日：1984-10-23

申请人： Hiromasa Kawai ,  Takashi Morinaga ,  Hiromu Miyajima ,  Toshio Akima ,  Mitsuharu Kato ,  Yutaka Hosoi

发明人： Hiromasa Kawai ,  Takashi Morinaga ,  Hiromu Miyajima ,  Toshio Akima ,  Mitsuharu Kato ,  Yutaka Hosoi

IPC分类号： C08F20/18

CPC分类号： C08F20/18

摘要： A polymer obtained by polymerizing tricyclo[5.2.1.0.sup.2,6 ]deca-8-yl acrylate or methacrylate in an amount of 100-5% by weight with one or more copolymerizable unsaturated monomers in an amount of 0 to 95% by weight is excellent in transparency, moisture resistance, and heat resistance and is suitable as a material for optical elements.

摘要翻译： 通过以0〜95重量％的量与一种或多种可共聚的不饱和单体聚合100-5重量％的三环[5.2.1.0 2,6]癸-8-基丙烯酸酯或甲基丙烯酸酯得到的聚合物是优异的 透明性，耐湿性和耐热性，并且适合作为光学元件的材料。