摘要:
A process for producing a fluorobenzaldehyde of the formula: ##STR1## wherein X is a chlorine atom, a bromine atom or an iodine atom, n is an integer of from 1 to 5, and m is an integer of from 1 to 5, provided n.gtoreq.m, which comprises reacting a halogenated benzaldehyde of the formula: ##STR2## wherein X and n are as defined above, with a metal fluoride in the presence of a catalyst, wherein at least one member selected from the group consisting of quaternary phosphonium salts and quaternary ammonium salts is used as the catalyst.
摘要:
A stabilizer composition comprising a phenyl acrylate compound or phosphite compound, and a sugar alcohol.A thermoplastic polymer composition comprising a phenyl acrylate compound or phosphite compound, and a sugar alcohol, wherein the total weight of the phenyl acrylate compound or phosphite compound, and the sugar alcohol is 0.001 to 3 parts by weight with respect to 100 parts by weight of the thermoplastic polymer.
摘要:
A resin composition comprising an ethylene/vinyl alcohol copolymer and a phosphite compound.A method of producing a resin composition, comprising the step of mixing an ethylene/vinyl alcohol copolymer with a phosphite compound.A molded article obtained by heat-molding the above-described resin composition.
摘要:
Artificial hair having a look and feel that both are close in character to that of natural human hair, compared with artificial hair made from polyamide fibers, polyester fibers, acrylic fibers, etc., and which holds that character over time. By means of artificial hair composed of monofilaments containing poly(trimethylene terephthalate), in particular, by means of artificial hair composed of monofilaments containing poly(trimethylene terephthalate) having a denier of 22 to 333 dtex, a melting point of 225 to 235° C., a glass transition temperature of 45 to 80° C., the physical properties of elastic recovery, strength, stretch, and texture resemble natural human hair, and the occurrence of frizzes and gloss is kept under control.
摘要:
The present invention provides a resin composition having excellent dispersibility, discoloration resistance and antimicrobial properties by blending a resin (A) with an antimicrobial agent (B) in which at least one kind of metal ion selected from the group consisting of silver, copper, zinc, and tin is supported on zeolite, and an antimicrobial agent (C) that includes a silver ion-containing phosphate as an active ingredient, or an antimicrobial agent (D) made of a soluble glass powder containing silver ion.
摘要:
The present invention lies in a process for producing a trifluoromethylthiomethylbenzene derivative represented by the following general formula (2): (wherein R is a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an alkoxycarbonyl group, a cyano group, a nitro group, or a benzoyl group which may be substituted with halogen atom, alkyl group, alkoxy group, aliphatic or aromatic acyl group, nitro group, cyano group or alkoxycarbonyl group; n is an integer of 1 to 5; when n is an integer of 2 or more, a plurality of R's may be the same of each independently different), which process comprises reacting, in acetonitrile, a benzyl halide derivative represented by the following general formula (1): (wherein R and n have the same definitions as given above; and X is a halogen atom, an alkylsulfonyloxy group or an arylsulfonyloxy group which may be substituted with alkyl group or halogen atom) with thiophosgene and potassium fluoride.
摘要:
A compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen atom, a lower alkyl group, an ar(lower)alkyl group or an aryl group, or R.sub.1 and R.sub.2 may be combined together to form a lower alkylene group and/or R.sub.3 and R.sub.4 are combined together to form a lower alkylene group, or R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be combined together to form an o-phenylene group, X is a halogen atom and Y is an oxygen atom or a nitrogen atom substituted with lower alkyl or aryl, which is useful as an intermediate in the synthesis of 1.beta.-methylcarbapenem compounds valuable as antibiotics.
摘要:
An amino acid derivative of the formula: ##STR1## wherein R.sup.1 is a protective group for hydroxyl, which is useful as an intermediate for production of antimicrobial agent.
摘要:
A novel thrust bearing is provided in which a spiral element having a disc shape is loosely interposed between a pair of flat elements one of which is rotatable and the other of which is stationary, the spiral element having a spiral groove pattern on each of the opposite surfaces of the disc with the patterns on the respective surfaces reverse in relation to each other in their spiral direction.
摘要:
A resin composition having excellent dispersibility, discoloration resistance and antimicrobial properties by blending a resin (A) with an antimicrobial agent (B) in which at least one kind of metal ion selected from the group consisting of silver, copper, zinc and tin is supported on zeolite, and an antimicrobial agent (C) that includes a silver ion-containing phosphate as an active ingredient, or an antimicrobial agent (D) made of a soluble glass powder containing silver ion.