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1. 发明专利

JPS63277242A NOVEL SULFUR-CONTAINING POLYMER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS63277242A
公开(公告)日：1988-11-15
申请号：JP11329687
申请日：1987-05-08
申请人： SEITETSU KAGAKU CO LTD , KOBAYASHI HIDEKAZU
发明人： KOBAYASHI HIDEKAZU , MARUYAMA SATOSHI , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , YAGI TAKASHI
IPC分类号： C08G75/02
摘要： PURPOSE:To obtain the titled polymer, having a high refractive index, excellent heat resistance, flame retardance, etc., and useful as a material for organic glass, etc., by reacting divinylbenzene with pyridinedithiol in a polar solvent while irradiating the resultant reaction mixture with ultraviolet rays. CONSTITUTION:Divinylbenzene (preferably p-divinylbenzene) is reacted with pyridinedithiol (preferably 2,6-pyridinedithiol) in the presence of a radical polymerization initiator (preferably benzoyl peroxide or 2,2'-azobisisobutyronitrile) in a polar solvent (preferably DMF, N-methyl-2-pyrrolidone or 1,2- dimethoxyethane) while being irradiated with ultraviolet rays to afford the aimed polymer having repeating units expressed by the formula.

2. 发明专利

JPS63279440A ORGANIC OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS63279440A
公开(公告)日：1988-11-16
申请号：JP11329987
申请日：1987-05-08
申请人： SEITETSU KAGAKU CO LTD , KOBAYASHI HIDEKAZU
发明人： KOBAYASHI HIDEKAZU , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , YAGI TAKASHI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To improve sensitivity and S/N at the time of reproduction by using a polymer having a specific repeating unit as an optical recording layer. CONSTITUTION:The addition polymer (sulfide polymer) of the divinyl benzene and benzendithiol expressed by the formula I is used as the recording layer. This org. optical recording medium is obtd. by forming the layer of the sulfide polymer in the form of a thin film on a substrate consisting of a transparent org. polymer such as polymethyl methacrylate or polycarbonate or transparent inorg. material such as glass. Information is recorded on said layer by impressing heat energy thereto from the outside to induce a phase transition of the crystal phase and amorphous phase of the sulfide polymer and the recorded information can be reproduced by reading the difference in the optical characteristics such as light transmittance and light reflectivity of the crystal phase and amorphous phase induced into the sulfide polymer. The recording medium having extremely good S/N of reading is thereby obtd.

3. 发明专利

JPS63277244A NOVEL SULFUR-CONTAINING POLYMER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS63277244A
公开(公告)日：1988-11-15
申请号：JP11329887
申请日：1987-05-08
申请人： SEITETSU KAGAKU CO LTD , KOBAYASHI HIDEKAZU
发明人： KOBAYASHI HIDEKAZU , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , YAGI TAKASHI
IPC分类号： C08G75/02
摘要： PURPOSE:To obtain the titled colorless and transparent polymer, having a high light transmittance, excellent heat resistance and flame retardance and useful as a material for organic glass, etc., by reacting divinylbenzene with benzenedithiol isomeric mixture while irradiating the resultant reaction mixture with ultraviolet rays. CONSTITUTION:Divinylbenzene (preferably p-divinylbenzene) is reacted with benzenedithiol isomeric mixture (preferably consisting of 50-90% p- benzenedithiol and the rest of m-benzenedithiol) in the presence of a radical polymerization initiator (preferably 2,2-azobisisobutyronitrile) while being irradiated with ultraviolet rays to afford the aimed polymer having repeating units expressed by the formula.

4. 发明专利

JPS63277243A NOVEL SULFUR-CONTAINING POLYMER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS63277243A
公开(公告)日：1988-11-15
申请号：JP11329787
申请日：1987-05-08
申请人： SEITETSU KAGAKU CO LTD , KOBAYASHI HIDEKAZU
发明人： KOBAYASHI HIDEKAZU , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , YAGI TAKASHI , TAKATSUKI YASUNORI
IPC分类号： C08G75/02
摘要： PURPOSE:To obtain the titled polymer, having a high refractive index, excellent heat resistance, flame retardance, etc., and useful as a material for organic glass, etc., by reacting divinylbenzene with thiophenedithiol in a polar solvent while irradiating the resultant reaction mixture with ultraviolet rays. CONSTITUTION:Divinylbenzene (preferably p-divinylbenzene) is reacted with thiophenedithiol (preferably 2,5-thiophenedithiol) in the presence of a radical polymerization initiator (preferably 2,2'-azobisisobutyronitrile or benzoyl peroxide) while being irradiated with ultraviolet rays to afford the aimed polymer having repeating units expressed by the formula.

5. 发明专利

JPS63185955A PRODUCTION OF 4-METHYL-1,2-BENZENEDITHIOL 失效
公开(公告)号：JPS63185955A
公开(公告)日：1988-08-01
申请号：JP1436787
申请日：1987-01-24
申请人： SEITETSU KAGAKU CO LTD
发明人： SUZUKI MICHIO , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , NAKAYAMA KAZUYUKI
IPC分类号： C07C319/24 , B01J27/06 , B01J27/10 , C07B61/00 , C07C67/00 , C07C313/00 , C07C319/02 , C07C319/06 , C07C321/10 , C07C321/26
摘要： PURPOSE:To obtain a compound useful as an intermediate for near infrared absorbing coloring matter which is an optical information recording medium in good yield in simple steps, by reacting 4-methylbenzenethiol or an oxide thereof with sulfur monochloride and reducing the resultant reaction product with a metal. CONSTITUTION:4-Methylbenzenethiol or di(4-methylphenyl) disulfide is reacted with sulfur monochloride in the presence of iodine or a Lewis acid catalyst in a halogenated hydrocarbon solvent, e.g. chloroform, at room temperature-140 deg.C. The reaction mixture is then subjected to reductive reaction at 40-80 deg.C for 0.5-3hr using at least one metal selected from zinc, tin and iron under acid condition to afford the aimed substance. The reaction is carried out by using sulfur monochloride in a molar amount of 0.5-2.0 times based on the 4-methylbenzenethiol and the di(4-methylphenyl) disulfide in a molar amount of 1-4 times based on the 4-methylbenzenethiol.

6. 发明专利

JPS59106479A Production of ketopantolactone 失效
标题翻译：生产酮二醇
公开(公告)号：JPS59106479A
公开(公告)日：1984-06-20
申请号：JP21583082
申请日：1982-12-09
申请人： Seitetsu Kagaku Co Ltd
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , OONISHI JIICHI
IPC分类号： C07D307/60
摘要： PURPOSE: Pantolactone is oxidized with chlorine in an organic solvent in the presence of bromine and water to produce the titled compound which is used as an intermediate of D-(-)-pantolactone used as a starting compound for pantethine in higy yield with reduction in by-product formation.
CONSTITUTION: Pantolactone is combined with 0.98W0.1mole of chlorine, 0.02W 0.9mole of bromine and 10W100% of water based on the pantolactone and they are refluxed, preferably in the presence of an organic solvent such as carbon tetrachloride, at the boiling point of the solvent to give the objective ketopantolactone. The use of a mixed system of Br
2 and Cl
2 can oxidize HBr formed as a by-product by bromine oxidation with chlorine to effect the reaction of 2HBr+Cl
2 →2HCl+Br
2 and the resultant Br
2 is used again as the oxidizing agent.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：在溴和水的存在下，用有机溶剂中的氯氧化内消旋酮，产生标题化合物，该化合物用作作为泛酸盐的起始化合物的D - （ - ） - 泛酸内酯的中间体，以高产率还原副产品形成。构成：根据泛酸内酯，将泛酸内酯与0.98-0.1摩尔氯，0.02-0.9摩尔溴和10-100％水混合，并优选在有机溶剂如四氯化碳的存在下回流溶剂的沸点得到目标酮戊酸内酯。使用Br2和Cl2的混合体系可以通过用溴氧化作为副产物氧化形成的HBr，以进行2HBr + Cl 2 2HCl + Br 2的反应，再次使用所得的Br 2作为氧化剂。

7. 发明专利

JPS5439019A PREPARATION OF 22BROMOO33METHYLBUTYRYL UREA 失效
公开(公告)号：JPS5439019A
公开(公告)日：1979-03-24
申请号：JP10300177
申请日：1977-08-26
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , KITAGISHI NOBUYUKI , YONEZAWA TAIZOU , OOTANI SHIGEKI
IPC分类号： C07C275/50
摘要： PURPOSE:To prepare titled compound in high yield by reaction of 2-bromo-3-methylbutyryl halides with urea in a specific organic solvent, followed by removal of water in urea and the solvent as an azeotropic mixture.

8. 发明专利

JPS5346962A PREPARATION OF THIOPHENEACETIC ACIDS 失效
公开(公告)号：JPS5346962A
公开(公告)日：1978-04-27
申请号：JP12058476
申请日：1976-10-06
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , TSUCHIYA HIROO , TAKAGI SHIYUUJI , TAKAHASHI MASAHIDE , SOMETA HITOSHI
IPC分类号： C07D333/24 , C07D333/06
摘要： PURPOSE:To prepare thiopheneacetic acids easily, useful as chemical modifier for synthetic antibiotics and raw materials for pharmaceuticals, by the photochemical reaction of thiophene with monohaloacetic acid or its ester under ultraviolet irradiation.

9. 发明专利

JPS6433138A PRODUCTION OF POLYPHENYLENE SULFIDE 失效
公开(公告)号：JPS6433138A
公开(公告)日：1989-02-03
申请号：JP19135287
申请日：1987-07-29
申请人： SEITETSU KAGAKU CO LTD
发明人： TAKAHASHI MASAHIDE , KAWAMURA MASAO , KATO KUNIOKI
IPC分类号： C08G75/02 , C08G75/04
摘要： PURPOSE:To obtain a high-MW polymer in high yields, by polymerizing 4,4'- dimercaptodiphenyl sulfide with a 4,4'-dihalodiphenyl sulfide in a solvent in the presence of an alkali (bi) carbonate. CONSTITUTION:A polyphenylene sulfide of the formula is obtained by polymerizing 4,4'-dimercaptodiphenyl sulfide with a 4,4'-dihalodiphenyl sulfide by keeping them at 200-400 deg.C in a solvent in the presence of an alkali carbonate or an alkali bicarbonate. Examples of said 4,4'-dihalodiphenyl sulfides used include 4,4'-dichlorodiphenyl sulfide and 4,4'-dibromodiphenyl sulfide. Good results can be usually brought about when the molar ratio between the materials is such that 4,4'-dimercaptodiphenyl sulfide is used in an amount which is slightly excess over an equimolar amount and is in the range of 1.00-1.2mol.

10. 发明专利

JPS6312467B2 失效
公开(公告)号：JPS6312467B2
公开(公告)日：1988-03-18
申请号：JP3713481
申请日：1981-03-13
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , TAKEMOTO MASAYOSHI , MAEDA HARUICHIRO , AKUTSU SEIICHI , KONO YUKIO , TAKAHASHI MASAHIDE , KONISHI HIROTSUGU
IPC分类号： C07C275/54 , C07C67/00 , C07C239/00

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