Nissan Chemical Industries Limited

Yasuyuki Nakajima

Kiyomi Ozawa

Makoto Tsugeno

Masayoshi Hirose

Masataka Hatanaka

Shigeru Ishii

Masaki Kudo

Kiminori Hirata

Yoshinori Ochiai

Takashi Furusato

Masanori Nishioka

Takahiro Makabe

Hiroyuki Kousaka

Hiroshi Ohya

Norio Tanaka

Yasuo Kawamura

Toshiaki Takeyama

Takamasa Kikuchi

Takayasu Nihira

Tomoyuki Ogura

Michito Tagawa

Junichi Watanabe

Shigeaki Akiyama

Tatsuo Numata

Hideyuki Nawata

Hisayuki Watanabe

Kiyoshi Sawahata

Michiaki Adachi

Hiroyuki Suzuki

Yoshiaki Yasumi

Mitsugu Futagawa

Kazunari Nakayama

Kouichi Masahashi

Shigeru Sasabe

Takashi Kitabayashi

Yoshikazu Ohtsuka

The present invention provides a process which enables easy and inexpensive preparation of alkylenebismelamines usable as components for forming resin materials, particularly aminoplasts, and flame retardants. The present invention is a process for preparation of alkylenebismelamines wherein the alkylene is a linear or branched C one by reacting an alkylenediamine wherein the alkylene is a linear or branched C one with melamine in the presence of an acidic catalyst under heating, characterized in that the amount of melamine is at least twice that of the alkylenediamine by mole.

Process for the preparation of alkylenebismelamines

The present invention provides a method for modifying melamine derivatives that can produce N-substituted melamine derivatives by introducing a substituent group to melamine or N-substituted melamine derivatives. The method is characterized by heating melamine or an N-substituted melamine derivative and an alcohol in the presence of a mixed catalyst comprising a hydrogenation catalyst and a dehydrogenation catalyst and hydrogen to allow reaction or heating melamine or an N-substituted melamine derivative and an alcohol in the presence of a hydrogenation catalyst and hydrogen with addition/coexistence of a metal to allow reaction. The compound groups obtained by introducing a substituent group to the amino group of melamine derivative with an alcohol by the method of the present invention can be used widely as intermediates of fine chemicals such as various agricultural chemicals, medicines, dyes, paints, etc. and as various resin materials and flame retardant materials.

Method for modifying melamine derivatives

The present invention relates to a treating agent for liquid crystal alignment, which comprises a polyamic acid compound having a reduced viscosity of from 0.05 to 5.0 dl/g (in N-methylpyrrolidone at a temperature of 30&deg; C. at a concentration of 0.5 g/dl) and containing repeating units represented by the general formula &lsqb;I&rsqb;:

Liquid crystal aligning agent

Pyrazolecarboxylic acid derivatives and plant disease control agent

Cyclooctadiene derivatives

A nitrogen-containing heterocyclic compound of the following formula: ##STR1## wherein D represents --N.dbd. or ##STR2## E represents .dbd.N--, ##STR3## G represents --N.dbd., ##STR4## with proviso that when G represents --N.dbd. or ##STR5## the bond of G and E is double bond; and G represents ##STR6## the bond thereof is a single bond, but the case that D represents ##STR7## E represents ##STR8## and G represents --N.dbd. is omitted (R.sup.1, R.sup.2, R.sup.9, R.sup.10, X, Y, A and Q are specified in the specification), as well as compositions for controlling and/or preventing pests and blights, said compositions containing one or two or more of said compounds as an active ingredient.

Nitrogen-containing heterocyclic compounds and compositions for

Compounds of the following formula: ##STR1## wherein Z.sup.3 represents halogen atom, straight or branched chain alkyl group having 1 to 10 carbon atoms, alkoxy group having 1 to 10 carbon atoms, alkylcarbonyl having 2 to 10 carbon atoms, alkoxyalkyl group having 2 to 4 carbon atoms, ##STR2## W represents halogen atom, alkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, haloalkyl group having 1 to 4 carbon atoms, or nitro group, m is 0 or an integer of 1 to 2, and when m is 2, W may be same or different, and compositions for controlling insects, acari and nemati which contain such compound.

Pyridazinone derivatives, and insecticidal, acaricidal and nematicidal

Pyrazoline derivatives useful as insecticides having the formula ##STR1## wherein X represents a hydrogen atom or a halogen atom; Y represents a halogen atom, a trifluoromethyl group or --A--R'; R represents a C.sub.1-10 alkyl group, a lower alkenyl group or a lower alkynyl group; and A represents an oxygen atom, a sulfur atom, a sulfinyl group or a sulfonyl group and R' represents a halogen-substituted lower alkyl group.

Insecticidal

Pyrazoline derivatives useful as insecticides having the formula ##STR1## wherein R.sup.1 represents hydrogen atom, a lower alkyl group, (CH.sub.2).sub.n CN group, (CH.sub.2).sub.n OR group, phenyl group or a halogen-substituted phenyl group; R.sup.2 represents hydrogen atom or methyl group; Y represents hydrogen atom or chlorine atom; X represents oxygen atom, sulfur atom, sulfinyl or sulfonyl group; R.sup.3 represents a halogen-substituted lower alkyl group; and n is integer 1 to 3 and R represents a lower alkyl group.

Insecticidal 3-difluoromethoxyphenyl-1-phenylcarbamoyl-2-pyrazolines

Ketone derivatives represented by the general formula (I) ##STR1## where R is --CH.sub.2 R.sup.1 (where R.sup.1 is a hydrogen atom or an alkyl group), a halogen-substituted alkyl group, a cyano-substituted alkyl group, a cyclopropyl group, ##STR2## (where R.sup.2 is a hydrogen atom or an alkyl group and Y is a hydrogen atom or a halogen atom) or ##STR3## (where R.sup.3 is a hydrogen atom, an alkyl group, a phenyl group or a halogen-substituted phenyl group, and Z is a hydrogen atom or a halogen atom), and X is an oxygen atom or a sulfur atom.

Phenyl ketone derivatives

Pyrazoline derivatives having the formula ##STR1## wherein R.sup.1 represents hydrogen atom, a lower alkyl group, phenyl group or a halogen-substituted phenyl group; R.sup.2 represents hydrogen atom or phenyl group which can have halogen substituents; X represents oxygen or sulfur atom; Y and Z respectively represent hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, nitro-group, trifluoromethyl group, a lower alkylthio group, an acyl group, nitrile group or a lower alkyl sulfonyl group.

Insecticidal pyrazoline derivatives and composition

Growing community of inventors

Funabashi, Japan

Yasuyuki Nakajima