Patents by Inventor Syoji Morimura
Syoji Morimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4413076Abstract: Polymers containing polyalkylpiperidines, preparation and use thereof as stabilizers for synthetic polymer compositions are described. In said polymer, sterically hindered polyalkylpiperidines are laterally linked to the main chain. The polymers are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof. The polyalkylpiperidine-containing polymers of the invention are hardly volatile upon heat-processing or during storage of shaped articles containing said polymers, and are resistant to extraction with solvents.Type: GrantFiled: August 30, 1982Date of Patent: November 1, 1983Assignee: Sankyo Company Ltd.Inventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4321374Abstract: Novel triazine derivatives represented by the general formula (I) and use thereof as light stabilizers for synthetic polymers are described. ##STR1## The compounds are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof, low volatility upon heat-processing or during storage of shaped articles containing the compounds, and resistance to extraction with water and solvents.Type: GrantFiled: June 3, 1980Date of Patent: March 23, 1982Assignee: Sankyo Company, LimitedInventors: Syoji Morimura, Toshimasa Toda, Tomoyuki Kurumada
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Patent number: 4265803Abstract: The invention entitled "Polymers containing polyalkylpiperidines and use thereof as stabilizers" provides a class of polymers in which groups containing sterically hindered polyalkylpiperidines are linked in the main chain of the polymers via bridging members containing 2-hydroxy-1,3-trimethylene groups.The polymers show superior stabilizing effects for various synthetic polymers such as polyolefins against degradation thereof induced by light and/or heat. The polymers have advantages, as compared with known stabilizer compounds, that they hardly volatile upon processing with heating or during storage of articles containing thereof, and that they are resistant to extraction with solvents from articles containing thereof.Type: GrantFiled: August 7, 1978Date of Patent: May 5, 1981Assignee: Sankyo Company LimitedInventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4241208Abstract: Piperidine derivatives having the formula ##STR1## wherein R' represents an alkyl, an acyl, an alkoxycarbonyl, an amino or nitroso group;X represents oxygen or sulfur;Y represents oxygen, sulfur or a group of the formula .dbd.N--R" in which R" is hydrogen or alkyl;Z represents oxygen or a group of the formula >N--R'" in which R'" is hydrogen or alkyl;n is an integer of 1 to 4; andR represents, when n is 1, alkyl, aryl, cycloalkyl, alkoxycarbonyl, substituted phosphino or substituted phosphinyl, when n is 2, alkylene, alkenylene, arylene, aralkylene; alkylenediphenylene, bis-(alkoxycarbonyl) alkylene, alkylene-bis-(oxycarbonylalkyl), dialkylene ether or diphenylene ether, when n is 3, alkanetriyl,tris-(alkoxycarbonyl)alkanetriyl, alkanetriyl-tris-(oxycarbonylalkyl) or a group of the formula ##STR2## in which p is an integer of 1 through 8 inclusive, and, when n is 4, alkanetetrayl,tetrakis-(alkoxycarbonyl) alkanetetrayl or alkanetetrayl-tetrakis-(oxycarbonylalkyl).Type: GrantFiled: December 12, 1978Date of Patent: December 23, 1980Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Ohsawa
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Patent number: 4237294Abstract: 2,2,6,6-Tetramethylpiperidine derivatives having the formula ##STR1## wherein: X represents a group of formula ##STR2## R represents a hydrogen atom, methyl group, ethyl group, phenoxymethyl group or phenyl group;R' represents a methyl group or ethyl group; andm represents 0, 1 or 2,are excellent stabilizers for synthetic polymers.Type: GrantFiled: June 18, 1979Date of Patent: December 2, 1980Assignees: Sankyo Company, Limited, Ciba-Geigy CorporationInventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4219465Abstract: Novel piperidine-spiro-hydantoin derivatives represented by the general formula (I) and use thereof as light stabilizers for synthetic polymers are described: ##STR1## The compounds are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof, small volatility upon heat-processing or during storage of shaped articles containing the compounds, and resistance to extraction with water and solvents.Type: GrantFiled: June 5, 1979Date of Patent: August 26, 1980Assignee: Sankyo Company LimitedInventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4212974Abstract: A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.Type: GrantFiled: July 14, 1978Date of Patent: July 15, 1980Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Osawa
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Patent number: 4166813Abstract: New polyalkylated 4-aminopiperidine derivatives contain in their molecule two or three piperidine rings, each having two alkyl substituents at both the 2- and the 6- positions, optionally having substituents at the 1- and 3- positions and having an amino substituent at the 4- position. The piperidine rings are joined together by attachment of the 4-amino substituents through, where there are two piperidine rings, a polyalkylene, polyether or polyester chain, or through, where there are three piperidine rings, an isocyanurate or glycerol system. These compounds and their acid addition salts are useful as stabilizers for synthetic polymers.Type: GrantFiled: May 8, 1978Date of Patent: September 4, 1979Assignee: Sankyo Company Ltd.Inventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4162246Abstract: Hydantoin derivatives in which two or three piperidine spiro hydantoin residues are attached by means of substituted alkylene groups or polyoxyalkylene groups whose oxyalkylene chain is optionally interrupted by one or more phenylene or cyclohexylene groups or by means of substituted isocyanurate or glyceryl groups and, where they exist, acid addition salts thereof, are valuable as stabilizers for synthetic polymers.Type: GrantFiled: December 13, 1977Date of Patent: July 24, 1979Assignee: Sankyo Company LimitedInventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4125533Abstract: A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.Type: GrantFiled: December 23, 1976Date of Patent: November 14, 1978Assignee: Sankyo Co. Ltd.Inventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Osawa
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Patent number: 4118368Abstract: Novel derivatives of 4-amino-2,6-dimethylpiperidine have additional methyl or substituted-methyl substituents at positions 2 and 6, and a carboxylate ester substituent at position 4. Positions 1 and 3, and the amino group at position 4, can optionally also be substituted. These derivatives are useful for stabilizing synthetic polymers, especially polyolefins, polyamides and polyurethanes, against photo- and thermal-deterioration, generally in an amount of 0.01 - 5.0% by weight based on the polymer.Type: GrantFiled: November 5, 1976Date of Patent: October 3, 1978Assignee: Sankyo Company LimitedInventors: Nobuo Soma, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4066615Abstract: A synthetic polymer composition stabilized against photo- and thermal-deterioration comprising a stabilizing amount of a compound having the formula ##STR1## wherein R' represents an alkyl, an acyl, an alkoxycarbonyl, an amino or nitroso group;X represents oxygen or sulfur;Y represents oxygen, sulfur or a group of the formula = N - R" in which R" is hydrogen or alkyl;Z represents oxygen or a group of the formula >N - R'" in which R'" is hydrogen or alkyl;N is an integer of 1 to 4; andR represents, when n is 1, alkyl, aryl, cycloalkyl, alkoxycarbonyl, substituted phosphino or substituted phosphinyl, when n is 2, alkylene, alkenylene, arylene, aralkylene; alkylenediphenylene, bis-(carboxycarbonyl) alkylene, alkylene-bis-(oxycarbonylalkyl), dialkylene ether or diphenylene ether, when n is 3, alkanetriyl, tris-(alkoxycarbonyl)alkanetriyl, alkanetriyl-tris-(oxycarbonylalkyl) or a group of the formula ##STR2## in which p is an integer of 1 through 8 inclusive, and, when n is 4, alkanetetrayl,tetrakis-(alkoxycarbType: GrantFiled: April 11, 1975Date of Patent: January 3, 1978Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Ohsawa
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Patent number: 4061616Abstract: A synthetic polymer composition stabilized against photo- and thermal deterioration thereof wherein there is incorporated, in a sufficient amount to prevent such deterioration, bipiperidyl derivatives.Type: GrantFiled: September 4, 1975Date of Patent: December 6, 1977Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4055536Abstract: New 2,2',6,6'-tetraalkyl-2,2',6,6'-tetramethyl-4,4'-bipiperidylidene derivatives, which are optionally substituted in the 1,1',3,3',5, and 5' positions are useful as stabilizers of organic substrates, particularly synthetic polymers, against photo- and thermal-deterioration. They may be prepared by condensing a corresponding 2,6-dialkyl-2,6-dimethyl-4-piperidone and then optionally introducing the desired substituents at the 1- and 1'-positions in the resulting bipiperidylidene derivative.Type: GrantFiled: July 30, 1976Date of Patent: October 25, 1977Assignee: Sankyo Company LimitedInventors: Nobuo Soma, Takao Yoshioka, Tomoyuki Kurumada, Syoji Morimura
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Patent number: 4016168Abstract: A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.Type: GrantFiled: February 26, 1975Date of Patent: April 5, 1977Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Osawa
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Patent number: 4007158Abstract: Novel piperidine derivatives of formula: ##STR1## (wherein 2 or 3 of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent alkyl groups having from 1 to 4 carbon atoms and the remainder of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen atoms, and R.sub.6 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a substituted alkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group) are useful as stabilizers for synthetic polymers.Type: GrantFiled: July 3, 1974Date of Patent: February 8, 1977Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Osawa
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Patent number: 3984371Abstract: A new piperidine derivative and a synthetic polymer composition stabilized against photo- and thermal deterioration thereof wherein there is incorporated, in a sufficient amount to prevent such deterioration, said piperidine derivative.Type: GrantFiled: October 3, 1973Date of Patent: October 5, 1976Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 3975357Abstract: A synthetic polymer composition stabilized against photo- and thermal-deterioration thereof wherein there is incorporated, in a sufficient amount to prevent such deterioration, 1-substituted piperidine derivatives.Type: GrantFiled: April 5, 1974Date of Patent: August 17, 1976Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka
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Patent number: 3975462Abstract: Piperidine-spiro-hydantoin derivatives having the formula ##SPC1##Wherein X represents oxygen atom or sulfur atom; n is an integer of 1 to 4 inclusive, and R represents various aliphatic or aromatic groups depending on the value of n.These compounds (I) are useful as stabilizers against photo and thermal deterioration of various synthetic polymers and can be prepared, for example, by reacting the corresponding 3-unsubstituted piperidine-spiro-hydantoin compound with the halide R-(X.sub.1).sub.n in which R and n are as defined herein and X.sub.1 is a halogen atom.Type: GrantFiled: October 22, 1974Date of Patent: August 17, 1976Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Toshimasa Toda, Eiko Mori, Hideo Horiuchi, Susumu Higashida, Katsuaki Matsui, Tomoyuki Kurumada, Noriyuki Ohta, Hisayou Ohsawa
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Patent number: 3963730Abstract: A process for preparing triacetonamine, characterized in that acetonine is reacted with acetone in the presence of at least 12.5 mol % based on acetonine of an acid catalyst under anhydrous conditions. Triacetonamine is used as an intermediate for light stabilizer for synthetic polymers.Type: GrantFiled: June 21, 1974Date of Patent: June 15, 1976Assignee: Sankyo Company LimitedInventors: Keisuke Murayama, Syoji Morimura, Takao Yoshioka, Tomoyuki Kurumada