公开(公告)号：US4122277A

公开(公告)日：1978-10-24

申请号：US802972

申请日：1977-06-02

申请人： Natsuo Sawa ,  Kyoko Gohda

发明人： Natsuo Sawa ,  Kyoko Gohda

IPC分类号： C07D233/54 ,  C07D233/64

CPC分类号： C07D233/64

摘要： A process for producing C-methylol imidazoles which comprises reacting imidazole compounds containing an aryl group at the 2-position with formaldehyde in a reaction medium having a pH of at least 7 whereby the formaldehyde adds to the carbon atom of the imidazole ring. The products are either monomethylol imidazoles or dimethlol imidazoles depending upon the starting imidazole compounds. Most of the C-methylol imidazoles thus obtained are new compounds.

摘要翻译： 一种制备C-羟甲基咪唑的方法，其包括在2-位含有芳基的咪唑化合物与甲醛在pH至少为7的反应介质中反应，由此甲醛加入到咪唑环的碳原子上。 取决于起始咪唑化合物，产物是单羟甲基咪唑或二甲基咪唑。 由此获得的大多数C-羟甲基咪唑是新的化合物。

公开(公告)号：US3933531A

公开(公告)日：1976-01-20

申请号：US482165

申请日：1974-06-24

申请人： Natsuo Sawa ,  Masahiro Hoda

发明人： Natsuo Sawa ,  Masahiro Hoda

IPC分类号： C23F11/14 ,  C23F11/00

CPC分类号： C23F11/149 ,  Y10T428/31678

摘要： Copper and copper alloys are prevented from rust by surface-treating the copper and copper alloys with at least one compound selected from the class consisting of alkylimidazoles represented by the following formula: ##SPC1##Wherein R is a long straight chain alkyl group of 5-21 carbon atoms and R' is hydrogen atom or a lower alkyl group, and their acid addition salts. The compound is used as it is, or in a solution, by dipping, spraying, coating or directly contacting with copper or copper alloy. The surface -treated copper and copper alloy can well withstand tarnishing in an atmosphere containing sulfur compound gas.

摘要翻译： 通过用至少一种选自下式表示的烷基咪唑的化合物对铜和铜合金进行表面处理来防止铜和铜合金生锈：

公开(公告)号：US4431818A

公开(公告)日：1984-02-14

申请号：US460663

申请日：1983-01-24

申请人： Natsuo Sawa ,  Tokuichi Saeki

发明人： Natsuo Sawa ,  Tokuichi Saeki

IPC分类号： C07D233/64 ,  C07D233/00 ,  C07D233/90 ,  C23F11/00 ,  C23F11/16

CPC分类号： C07D233/90 ,  C23F11/162

摘要： Disclosed is an imidazole-4(5)-dithiocarboxylic acid compound represented by the following general formula: ##STR1## wherein R.sub.2 stands for a hydrogen atom or a monovalent hydrocarbon group having up to 20 carbons, R.sub.4 stands for a hydrogen atom or an alkyl group having up to 4 carbon atoms, and X stands for a hydrogen atom or an alkali metal atom.This compound has an excellent rust preventive action to silver. This compound is prepared according to a process which comprises reacting an imidazole compound represented by the following general formula: ##STR2## wherein R.sub.2 and R.sub.4 are as defined above, with carbon disulfide and an alkali metal hydroxide in the presence of a solvent, and if necessary, acidifying the obtained imidazole compound.

公开(公告)号：US4394511A

公开(公告)日：1983-07-19

申请号：US370354

申请日：1982-04-21

申请人： Natsuo Sawa ,  Tokuichi Saeki

发明人： Natsuo Sawa ,  Tokuichi Saeki

IPC分类号： C07D233/64 ,  C07D233/00 ,  C07D233/90 ,  C23F11/00 ,  C23F11/16 ,  C07D233/84

CPC分类号： C07D233/90 ,  C23F11/162

摘要： Disclosed is an imidazole-4(5)-dithiocarboxylic acid compound represented by the following general formula: ##STR1## wherein R.sub.2 stands for a hydrogen atom or a monovalent hydrocarbon group having up to 20 carbons, R.sub.4 stands for a hydrogen atom or an alkyl group having up to 4 carbon atoms, and X stands for a hydrogen atom or an alkali metal atom.This compound has an excellent rust preventive action to silver. This compound is prepared according to a process which comprises reacting an imidazole compound represented by the following general formula: ##STR2## wherein R.sub.2 and R.sub.4 are as defined above, with carbon disulfide and an alkali metal hydroxide in the presence of a solvent, and if necessary, acidifying the obtained imidazole compound.

摘要翻译： 公开了由以下通式表示的咪唑-4（5） - 二硫代羧酸化合物：其中R2代表氢原子或具有至多20个碳的一价烃基，R4代表氢原子或烷基 具有至多4个碳原子的基团，X表示氢原子或碱金属原子。 该化合物对银具有优良的防锈作用。 该化合物根据以下方法制备，该方法包括使由以下通式表示的咪唑化合物：其中R 2和R 4如上定义，与二硫化碳和碱金属氢氧化物在溶剂存在下反应，如果 必需的，酸化所得的咪唑化合物。

公开(公告)号：US4469622A

公开(公告)日：1984-09-04

申请号：US460662

申请日：1983-01-24

申请人： Natsuo Sawa ,  Tokuichi Saeki

发明人： Natsuo Sawa ,  Tokuichi Saeki

IPC分类号： C07D233/64 ,  C07D233/00 ,  C07D233/90 ,  C23F11/00 ,  C23F11/16

CPC分类号： C07D233/90 ,  C23F11/162

摘要： Disclosed is an imidazole-4(5)-dithiocarboxylic acid compound represented by the following general formula: ##STR1## wherein R.sub.2 stands for a hydrogen atom or a monovalent hydrocarbon group having up to 20 carbons, R.sub.4 stands for a hydrogen atom or an alkyl group having up to 4 carbon atoms, and X stands for a hydrogen atom or an alkali metal atom.This compound has an excellent rust preventive action to silver. This compound is prepared according to a process which comprises reacting an imidazole compound represented by the following general formula: ##STR2## wherein R.sub.2 and R.sub.4 are as defined above, with carbon disulfides and an alkali metal hydroxide in the presence of a solvent, and if necessary, acidifying the obtained imidazole compound.

公开(公告)号：US4205156A

公开(公告)日：1980-05-27

申请号：US5493

申请日：1979-01-22

申请人： Natsuo Sawa ,  Tadao Nomoto ,  Keiko Iuchi ,  Toshihiro Suzuki ,  Shunichi Kawata

发明人： Natsuo Sawa ,  Tadao Nomoto ,  Keiko Iuchi ,  Toshihiro Suzuki ,  Shunichi Kawata

IPC分类号： C07D251/32 ,  C08G59/50 ,  C08G59/68 ,  C08G59/56

CPC分类号： C07D251/32 ,  C08G59/5086 ,  C08G59/686

摘要： An imidazole-isocyanuric acid adduct having the following general formula is disclosed: ##STR1## wherein R.sub.1 is a member selected from the group consisting of a hydrogen atom, a .beta.-cyanoethyl group and a .beta.-[3,5-diamino-S-triazinyl-(1)]-ethyl group, R.sub.2 stands for a monovalent hydrocarbon group having up to 17 carbon atoms, R.sub.3 is a member selected from the group consisting of a hydrogen atom and an alkyl group having up to 4 carbon atoms, with the proviso that when R.sub.1 is a hydrogen atom, R.sub.2 is a methyl or phenyl group and R.sub.3 is a hydrogen atom and when R.sub.1 is a .beta.-cyanoethyl group, R.sub.2 is a phenyl group and R.sub.3 is a hydrogen atom, and n is a number of from 0 to 2.This adduct has peculiar characteristics not possessed by ordinary salts. Namely, the adduct is stable in water, and it decomposes in a solvent or under heating. The adduct is valuable as a curing agent for epoxy resins, and it can be utilized for purification of imidazoles.

摘要翻译： 公开了具有以下通式的咪唑 - 异氰脲酸加合物：其中R 1是选自氢原子，β-氰基乙基和β-[3,5-二氨基-S- 三嗪基 - （1）] - 乙基，R 2表示具有至多17个碳原子的一价烃基，R 3是选自氢原子和具有至多4个碳原子的烷基的成员，其中 条件是当R1是氢原子时，R2是甲基或苯基，R3是氢原子，当R1是β-氰基乙基时，R2是苯基，R3是氢原子，n是 从0至2.该加合物具有普通盐不具有的特有特性。 即，加合物在水中稳定，在溶剂中或加热下分解。 加合物作为环氧树脂的固化剂是有价值的，可用于咪唑的纯化。

公开(公告)号：US4104473A

公开(公告)日：1978-08-01

申请号：US679663

申请日：1976-04-23

申请人： Natsuo Sawa ,  Kyoko Gohda

发明人： Natsuo Sawa ,  Kyoko Gohda

IPC分类号： C07D233/54 ,  C07D233/64

CPC分类号： C07D233/64

摘要： A process for producing C-methylol imidazoles which comprises reacting imidazole compounds containing an aryl group at the 2-position with formaldehyde in a reaction medium having a pH of at least 7 whereby the formaldehyde adds to the carbon atom of the imidazole ring. The products are either monomethylol imidazoles or dimethlol imidazoles depending upon the starting imidazole compounds. Most of the C-methylol imidazoles thus obtained are new compounds.

摘要翻译： 一种制备C-羟甲基咪唑的方法，其包括在2-位含有芳基的咪唑化合物与甲醛在pH至少为7的反应介质中反应，由此甲醛加入咪唑环的碳原子。 取决于起始咪唑化合物，产物是单羟甲基咪唑或二甲基咪唑。 由此获得的大多数C-羟甲基咪唑是新的化合物。