Patents Assigned to Shin Nisso Kako Co., Ltd.
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Patent number: 4954631Abstract: Fluoran compounds are disclosed of formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent hydrogen, halogen, lower alkoxy, C.sub.1 -C.sub.9 -alkyl, C.sub.5 or C.sub.6 -cycloalkyl, benzyl or phenyl, said benzyl or phenyl being optionally substituted by halogen, lower alkyl or lower alkoxy, and further R.sub.1 and R.sub.2 as well as R.sub.3 and R.sub.4 taken together with Ring A, may form a naphthalene ring optionally substituted by halogen, lower alkyl or lower alkoxy, R.sub.5, R.sub.6 and R.sub.7 independently represent halogen, lower alkyl or lower alkoxy, B.sub.1 and B.sub.2 independently represent hydrogen, C.sub.1 -C.sub.8 -alkyl, benzyl or phenyl, said benzyl or phenyl being optionally substituted by halogen, lower alkyl, lower alkoxy, or alkyl-substituted, X represents hydrogen atom or --NR.sub.8 R.sub.9 wherein R.sub.8 and R.sub.9 independently represent hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 or C.sub.Type: GrantFiled: February 2, 1989Date of Patent: September 4, 1990Assignee: Shin Nisso Kako Co., Ltd.Inventors: Takeo Obitsu, Yutaka Ohnishi, Shinji Yoshinaka, Minoru Koguchi, Mitsuhiro Yanagita, Nobuyuki Hirai
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Patent number: 4864048Abstract: A process for preparing a phosphonitrile compound having a substituted hydroxyl group by making use of a phosphonitrile chloride oligomer and an alcohol as the starting materials, which comprises:(1) a first step of reacting said phosphonitrile chloride oligomer with said alcohol in a specific amount ratio of the active chlorine contained in said phosphonitrile chloride oligomer relative to the alcohol in the presence of a specific amount of a tertiary amine at a specific temperature, thereby substituting a specific amount of said active chlorine by a substituted alkoxy group,(2) a second step of elevating the temperature of the reaction mixture obtained in the first step to a specific temperature to cause a condensation reaction through the elimination of R--Cl, and(3) a third step of adding an alcohol in a specific amount ratio relative to said active chlorine which remains at the stage of completion of the second step, to the reaction system, and making said remaining active chlorine react with said alcohoType: GrantFiled: August 6, 1987Date of Patent: September 5, 1989Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masaharu Kaneko, Kazuhiko Fujikawa, Tetsuhiko Okamoto
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Patent number: 4855389Abstract: This invention relates to a process for producing phosphonitrile oligomers containing maleimido phenoxy groups.Type: GrantFiled: August 28, 1987Date of Patent: August 8, 1989Assignee: Shin Nisso Kako Co., Ltd.Inventors: Shinichiro Ueyama, Masayuki Furukawa, Tadaichi Nishikawa
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Patent number: 4826806Abstract: Fluoran compounds are disclosed of formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent hydrogen, halogen, lower alkoxy, C.sub.1 -C.sub.9 -alkyl, C.sub.5 or C.sub.6 -cycloalkyl, benzyl or phenyl, said benzyl or phenyl being optionally substituted by halogen, lower alkyl or lower alkoxy, and further R.sub.1 and R.sub.2 as well as R.sub.3 and R.sub.4 taken together with Ring A, may form a naphthalene ring optionally substituted by halogen, lower alkyl or lower alkoxy, R.sub.5, R.sub.6 and R.sub.7 independently represent halogen, lower alkyl or lower alkoxy, B.sub.1 and B.sub.2 independently represent hydrogen, C.sub.1 -C.sub.8 -alkyl, benzyl or phenyl, said benzyl or phenyl being optionally substituted by halogen, lower alkyl, lower alkoxy, or alkyl-substituted amino, X represents hydrogen atom or --NR.sub.8 R.sub.9 wherein R.sub.8 and R.sub.9 independently represent hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 or C.sub.Type: GrantFiled: July 29, 1987Date of Patent: May 2, 1989Assignee: Shin Nisso Kako Co., Ltd.Inventors: Takeo Obitsu, Yutaka Ohnishi, Shinji Yoshinaka, Minoru Koguchi, Mitsuhiro Yanagita, Nobuyuki Hirai
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Patent number: 4795621Abstract: Phosphonitrile chloride oligomer, particularly, phosphonitrile chloride trimer, is produced in high yield while suppressing the formation of by-product phosphonitrile chloride tetramer, by reacting phosphorus pentachloride with ammonium chloride in an inert organic solvent, in the presence of a catalytic amount of a compound selected from the group consisting of quinoline, isoquinoline and their drivatives represented by the general formulae: ##STR1## wherein R stands for an alkyl group or a halogen atom and n stands for zero or an integer of 1 to 7,and pyridine derivatives represented by the general formula: ##STR2## wherein Q stands for a halogen atom or a hydroxyl group; R' stands for an alkyl group; m stands for an integer of 1 to 5 and p stands for zero of an integer of 1 to 4 with the proviso that the total number of m and p is from 1 to 5,and in the presence of a catalytic amount of a polyvalent metal compound.Type: GrantFiled: August 13, 1986Date of Patent: January 3, 1989Assignee: Shin Nisso Kako Co., Ltd.Inventors: Tetsuhiko Okamoto, Shinichiro Ueyama, Kazuhiko Fujikawa
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Patent number: 4794069Abstract: Spirobenzanthracene phthalide compounds are disclosed of the formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently represent C.sub.1 -C.sub.8 alkyl optionally substituted by C.sub.1 -C.sub.5 alkoxy; C.sub.5 or C.sub.6 cycloalkyl; or aralkyl or aryl optionally substituted by C.sub.1 -C.sub.5 alkyl or C.sub.1 -C.sub.5 alkoxy, and R.sup.1 and R.sup.2, R.sup.3 and R.sup.4, and R.sup.5 and R.sup.6 taken together with the nitrogen atom to which they are attached, may form pyrrolidino, piperidino or morpholino ring, and R.sup.7, R.sup.8, R.sup.9 and R.sup.10 independently represent hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy or trifluoromethyl. The compounds are used, together with a developer, in color for materials such as pressure-sensitive copying papers, heat-sensitive recording papers and the like.Type: GrantFiled: July 14, 1987Date of Patent: December 27, 1988Assignee: Shin Nisso Kako Co., Ltd.Inventors: Yutaka Ohnishi, Shinji Yoshinaka, Toshiyuki Tanaka, Minoru Koguchi, Takeo Obitsu
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Patent number: 4727162Abstract: A molecular compound of a fluoran compound and a ketone useful as a color former for heat or pressure-sensitive color-developable recording material.Type: GrantFiled: November 25, 1986Date of Patent: February 23, 1988Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki
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Patent number: 4695640Abstract: Addition compound of fluoran compound and ketone useful as color former for heat or pressure-sensitive color-developable recording material.Type: GrantFiled: October 21, 1985Date of Patent: September 22, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki, Shinji Yoshinaka, Kimiaki Kinoshita, Morikuni Saito, Toshiyuki Yamashita, Morio Nanbu
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Patent number: 4687862Abstract: The fluoran compounds of the formula (I) are new red color forming chromogenic dyes. ##STR1## wherein R represents an isobutyl or isopentyl group, R.sub.1 represents a hydrogen or halogen atom or an alkyl group, R.sub.2 represents a hydrogen or halogen atom or an alkyl group, R.sub.3 represents a hydrogen atom, and R.sub.4 represents a hydrogen atom, or R.sub.4 and R.sub.1 as well as R.sub.2 and R.sub.3 taken together with the carbon atoms to which they are attached may form a benzene ring which may be substituted with a halogen atom. They are used, together with an acidic developer, in chromogenic recording materials for use in pressure sensitive copying paper, heat-sensitive recording paper and thermo-sensitive, reversible color changing composition.Type: GrantFiled: October 14, 1986Date of Patent: August 18, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Takeo Obitsu, Tetsuo Igaki, Kimiaki Kinoshita, Morio Nanbu, Shinichi Satoh
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Patent number: 4680598Abstract: The fluoran compounds of the formula (I) are new red color forming chromogenic dyes. ##STR1## wherein R represents an isobutyl or isopentyl group, R.sub.1 represents a hydrogen or halogen atom or an alkyl group, R.sub.2 represents a hydrogen or halogen atom or an alkyl group, R.sub.3 represents a hydrogen atom, and R.sub.4 represents a hydrogen atom, or R.sub.4 and R.sub.1 as well as R.sub.2 and R.sub.3 taken together with the carbon atoms to which they are attached may form a benzene ring which may be substituted with a halogen atom. They are used, together with an acidic developer, in chromogenic recording materials for use in pressure sensitive copying paper, heat-sensitive recording paper and thermo-sensitive, reversible color changing composition.Type: GrantFiled: April 8, 1986Date of Patent: July 14, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Takeo Obitsu, Tetsuo Igaki, Kimiaki Kinoshita, Morio Nanbu, Shinichi Satoh
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Patent number: 4677203Abstract: Certain 3-piperidino fluoran derivatives useful as color recording materials are disclosed.Type: GrantFiled: June 14, 1983Date of Patent: June 30, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Shoichi Horiuchi, Takahumi Toyama, Akio Kashiwagi, Teruo Suzuki, Tetsuo Igaki, Kazuyuki Horisawa, Mituhiro Shoji
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Patent number: 4668967Abstract: 3-N-isobutyl-ethylamino-7-phenylaminofluoran is a new green color former. It is used, together with an acidic substance, in color forming record materials for use in pressure sensitive copying paper, heat-sensitive recording paper and the like.Type: GrantFiled: May 28, 1986Date of Patent: May 26, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Takeo Obitsu, Tetsuo Igaki, Kazuyuki Horisawa, Morio Nanbu, Kimiaki Kinoshita, Sumio Manaka
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Patent number: 4665199Abstract: 3-N-isobutylethylamino-6-methyl-7-phenylamino fluoran of formula (I) ##STR1## is described.Type: GrantFiled: December 23, 1985Date of Patent: May 12, 1987Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yoshinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
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Patent number: 4616239Abstract: 4-Hydroxy-4'-isopropoxydiphenylsulfone useful as color developer for heat-sensitive color-developable recording material.Type: GrantFiled: September 16, 1985Date of Patent: October 7, 1986Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki, Shinji Yoshinaka, Kosaku Morita, Kimiaki Kinoshita, Masashi Enokiya, Akio Kaneko, Toshiyuki Yamashita
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Patent number: 4613879Abstract: This invention relates to chromogenic recording materials comprising as a chromogenic substance 3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran of the following formula (I) ##STR1##Type: GrantFiled: April 18, 1984Date of Patent: September 23, 1986Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yoshinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
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Patent number: 4590498Abstract: Chromogenic recording materials which utilizes a fluoran compound of the formula ##STR1## wherein R is methyl or ethyl, is described.Type: GrantFiled: February 23, 1984Date of Patent: May 20, 1986Assignee: Shin Nisso Kako Co., Ltd.Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yosinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
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Patent number: 4571310Abstract: A process for preparing alkoxyphosphonitrile compounds.Type: GrantFiled: May 23, 1984Date of Patent: February 18, 1986Assignee: Shin Nisso Kako Co., Ltd.Inventors: Hiroshi Tanino, Tetsuhiko Okamoto, Shinichiro Ueyama, Kazuhiko Fuzikawa
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Patent number: 4567028Abstract: A process for the preparation of phosphonitrile chloride oligomer, particularly, phosphonitrile chloride trimer at a high yield while suppressing the by-production of phosphonitrile chloride tetramer by reacting phosphorus pentachloride and ammonium chloride in an inert organic solvent under the presence of a polyvalent metal compound catalyst, wherein a catalytic amount of a compound selected from the group consisting of pyridine and alkyl-substituted pyridine derivatives capable of forming chloropyridinium salts in reaction with phosphorus pentachloride is present in the reaction system.Type: GrantFiled: February 11, 1985Date of Patent: January 28, 1986Assignee: Shin Nisso Kako Co., Ltd.Inventors: Hiroshi Tanino, Tetsuhiko Okamoto, Shinichiro Ueyama
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Patent number: 4560526Abstract: A process for preparing a molded silicon carbide product, by molding a mixture of silicon carbide powder, an organosilicon compound and one or more lubricants to form a compact and sintering the thus-formed compact, is described.Type: GrantFiled: March 12, 1984Date of Patent: December 24, 1985Assignee: Shin Nisso Kako Co., Ltd.Inventor: Masatoshi Okumura
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Patent number: 4522689Abstract: A process for completely separating tri(phosphonitrile chloride) from tetra(phosphonitrile chloride) and/or phosphonitrile chloride oligomer which includes vacuum distillation of the phosphonitrile chloride mixture together with an inert mixture of hydrocarbons as solvent.Type: GrantFiled: October 9, 1984Date of Patent: June 11, 1985Assignee: Shin Nisso Kako Co., Ltd.Inventors: Hiroshi Tanino, Tetsuhiko Okamoto, Shinichiro Ueyama, Kazuhiko Fujikawa, Takatoshi Tsumiyama