公开(公告)号：US4973640A

公开(公告)日：1990-11-27

申请号：US404661

申请日：1989-09-08

申请人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tetsuya Yamamoto ,  Tsuguo Takaya

发明人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tetsuya Yamamoto ,  Tsuguo Takaya

IPC分类号： C08F212/08 ,  C08F222/14 ,  C08F283/06 ,  G02B1/04

CPC分类号： G02B1/04

摘要： A resin having a low specific gravity, an excellent impact resistance and a high refractive index can be produced by radical polymerization of a polymerizable monomer mixture composed essentially of [I] at least one polymerizable monomer selected from the group consisting of specific polyfunctional (meth)acrylates, [II] at least one polymerizable monomer selected from the group consisting of styrene and alpha-methylstyrene, and [III] at least one polymerizable monomer selected from the group consisting of unsaturated nitriles. This invention provides an optical material composed of said resin, especially, a lens.

公开(公告)号：US4931521A

公开(公告)日：1990-06-05

申请号：US253340

申请日：1988-10-03

申请人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tsuguo Takaya

发明人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tsuguo Takaya

IPC分类号： C08F20/38 ,  C08F38/02 ,  G02B1/04

CPC分类号： C07C327/00 ,  C08F20/38 ,  C08F38/02 ,  G02B1/04

摘要： A process for producing a resin having a high refractivve index which comprises radically polymerizing a material monomer, characterized in that said material monomer comprises [I] at least one polymerizable monomer selected from the group consisting of a polyfunctional thioacrylate and a polyfnctional thiomethacrylate (as an indispensable component), and optionally [II] at least one other polymerizable monomer which is radically polymerizable with said polymerizable monomer [I], a resin having a high refractive index produced by said process and optical materials, especially lenses and disk substrates prepared from said resin.

公开(公告)号：US4810812A

公开(公告)日：1989-03-07

申请号：US135045

申请日：1987-12-18

申请人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tsuguo Takaya

发明人： Tatsuhito Matsuda ,  Yasuaki Funae ,  Masahiro Yoshida ,  Tsuguo Takaya

IPC分类号： C07C327/22 ,  C08F20/38 ,  C07C153/023

CPC分类号： C08F20/38 ,  C07C327/00

摘要： Thiolcarboxylic acid esters represented by the general formula ##STR1## wherein X represents --CH.sub.2 CH.sub.2 --, ##STR2## and n and m represent an integer of 1 to 3.

公开(公告)号：US5072018A

公开(公告)日：1991-12-10

申请号：US535537

申请日：1990-06-11

申请人： Hidetaka Yatagai ,  Osamu Kaieda ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

发明人： Hidetaka Yatagai ,  Osamu Kaieda ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

IPC分类号： C07D251/18

CPC分类号： C07D251/18

摘要： In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocylohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocylohexane in an atmosphere substantially incapable of producing any effect of oxygent.

公开(公告)号：US4983710A

公开(公告)日：1991-01-08

申请号：US391956

申请日：1989-08-10

申请人： Hidetaka Yatagai ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

发明人： Hidetaka Yatagai ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

IPC分类号： C08G12/30

CPC分类号： C08G12/30

摘要： A method for the production of methylolaminotriazine condensate by the reaction of cyclohexanecarboguanamine (A) and formaldehyde (B), which method comprises preparing a solution of formaldehyde (B) or a solution containing cyclohexanecarboguanamine (A) and formaldehyde (B) in such amounts that the molar ratio of (A)/(B) will be not more than 1/2.5, keeping the temperature of said solution in the range of 55.degree. to 150.degree. C. and, at the same time, gradually supplying cyclohexanecarboguanaimine (A) thereto.

公开(公告)号：US4973689A

公开(公告)日：1990-11-27

申请号：US279938

申请日：1988-12-05

申请人： Hidetaka Yatagai ,  Osamu Kaieda ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

发明人： Hidetaka Yatagai ,  Osamu Kaieda ,  Jiro Iriguchi ,  Souichi Yamada ,  Tsuguo Takaya

IPC分类号： C07D251/18

CPC分类号： C07D251/18

摘要： In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocyclohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocyclohexane in an atmosphere substantially incapable of producing any effect of oxygen.

摘要翻译： 在碱性催化剂存在下，通过氰基环己烷与双氰胺在其分子单元中具有羟基的有机溶剂在90〜200℃的温度范围内反应生产环己烷甲酰胺的方法， 其改进包括在基本上不产生任何氧气作用的气氛中，使用0.60-0.95摩尔双氰胺/摩尔氰基环己烷进行反应。

公开(公告)号：US4782179A

公开(公告)日：1988-11-01

申请号：US153975

申请日：1988-02-09

申请人： Koichi Hirota ,  Osamu Kaieda ,  Tsuguo Takaya

发明人： Koichi Hirota ,  Osamu Kaieda ,  Tsuguo Takaya

IPC分类号： C07C229/60 ,  C07C101/54

CPC分类号： C07C229/60

摘要： 3-amino-2,4,5-trifluorobenzoic acid which is a novel compound and is manufactured by heating 4-amino-3,5,6-trifluorophthalonitrile in the presence of an acid.