Abstract:
NEW MATERIAL:A diphenyldiacetylene derivative expressed by formula I (R1 is H or CH3O; R2 is H, CH3O or CH3NH; R3 and R4 are H or CF3) and having solid-phase polymerizability. EXAMPLE:1-(4-Methoxyphenyl)-4-[2,5-bis(trifluoromethyl)phenyl]-1,3-but adiyne. USE:A functional material, such as nonlinear optical material, photosensitive material or polymer semiconductor crystals. PREPARATION:An ethynylbenzene derivative formula formula II and 1-bromo-3- hydroxy-3-methyl-1-butyne expressed by formula III are subjected to asymmetric coupling and the resultant diacetylene derivative expressed by formula IV is subjected to removal of acetone in the presence of a basic catalyst to provide a phenylbutadiyne derivative expressed by formula V, which is then subjected to coupling reaction with bis(trifluoromethyl)iodobenzene expressed by formula VI in the presence of a palladium catalyst to afford the compound expressed by formula I.
Abstract:
NEW MATERIAL:A compound of formula I [R is 2,5-or 3,5-bis(trifluoromethyl) phenyl, 4-aminophenyl or 2-pyridyl]. EXAMPLE:1-[2,5-bis(trifluoromethyl)phenyl]-5-(N-carbazolyl-1,3-pentadi yne. USE:Useful for functional materials such as nonlinear optical materials, photosensitive materials and polymeric semiconductor crystals. PREPARATION:An asymmetrical coupling is made between (A) an ethynylbenzene derivative of formula II and (B) N-(3-bromo-2-propynyl)carbazole of formula III into the objective compound of the formula I. The reaction is carried out in such a manner that an amine and copper chloride are added to a solution of the compound of the formula II followed by gradual addition of the compound of the formula III while stirring.
Abstract:
PURPOSE:To obtain the above optical material having a high nonlinear optical characteristic by forming a supporting film consisting of a synthetic resin which can be dissolved in a common solvent for a diacetylene compd. and the diacetylene compd. which is subjected to solid phase polymn. therein to mixing ratios of a prescribed range. CONSTITUTION:This optical material consists of the supporting film consisting of the synthetic resin which can be dissolved in the common solvent for the diacetylene compd. and the diacetylene compd. which is subjected to the solid phase polymn. therein. The mixing ratios based on the volume of the supporting film and the diacetylene compd. are specified to a 5:1 to 1:20 range. Polystyrene, polyvinyl chloride, etc., which are soluble in the common solvent for the diacetylene compd. are used as the synthetic resin to be used in this embodiment. Hexadiindiol-P-toluene sulfonite, etc., are usable as the solid phase polymerizable acetylene compd. The material which is the material having the nonlinear optical characteristic, having optical uniformity, transparency and easy workability including the formation of thinner films, and is the excellent stability with lapse of time is obtd. in this way.
Abstract:
PROBLEM TO BE SOLVED: To provide an inorganic colored particle powder which excels in easy dispersibility, dispersion uniformity, and dispersion stability in a vehicle, and a production method which can industrially obtain the inorganic colored particle powder. SOLUTION: The inorganic colored particle powder is composed of inorganic colored particles coated with a polysiloxane modified with at least one kind selected from a polyether, a polyester, and an aralkyl. This inorganic colored particle powder can be obtained by mixing, at a temperature of >=80 deg.C, inorganic colored particles with the polysiloxane modified with at least one kind selected from the polyether, the polyester, and the aralkyl.
Abstract:
PROBLEM TO BE SOLVED: To prepare a film made of a colored plastic not inhibiting a coloring effect by a colorant, having more improved combustion efficiency in incineration. SOLUTION: The film made of the colored plastic is obtained by forming 0.01-2 wt.%, based on a thermoplastic resin, of a colorant and 0.01-2 wt.%, based on the thermoplastic resin, of complex hydrous iron oxide fine particle power having >=0.005 μm and
Abstract:
PROBLEM TO BE SOLVED: To provide ferrite particle powder for bonded magnets, capable of obtaining a bonded magnet compact with good mechanical strength and superior magnetic characteristics of molded products, a resin composition for the bonded magnets, and a bonded magnet compact, such as a magnet roll that uses the ferrite particle powder and the composition. SOLUTION: Ferrite particle powder for bonded magnets, a resin composition for the bonded magnets, and a magnet roll have a particle size distribution, with a mean volume diameter controlled from 2.1 μm to 2.7 μm and the standard deviation σ of the particle size distribution controlled from 1.4 to 1.9. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition for a bonded magnet excellent in moldability, and a bonded magnet excellent in mechanical strength and heat resistance. SOLUTION: This resin composition comprises a magnetic powder and an aromatic polyamide resin. The polyamide resin has such characteristics that the molar ratio of the amount of remaining terminal carboxyl groups to that of remaining terminal amino groups is 1.0 or lower or that an aliphatic diamine component for producing the polyamide resin comprises a linear diamine and a branched diamine, the molar ratio of the content of the linear diamine to that of the branched diamine being less than 4.0. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To obtain a plastic film having excellent transparency and low chroma, capable of suppressing the discoloration at the time of molding processing, and exhibiting more improved combustion efficiency when being disposed. SOLUTION: This plastic film is obtained by forming a thermoplastic resin containing 0.01-2 wt.% complex pigment comprising a fine particle powder of a complex hydrated iron oxide having the particle surfaces covered with an organosilane compound or a polysiloxane formed from an alkoxysilane, further having an attached organic blue pigment and 0.005-0.1 μm average major axis diameter, and regulated so that the attached amount of the organic blue pigment may be 1-20 pts.wt. based on 100 pts.wt. hydrated iron oxide particle powder, into a film shape.
Abstract:
PURPOSE: To obtain the subject powder, comprising inorganic colored particles prepared by applying a specific modified polysiloxane to the surfaces of particles and excellent in easy dispersibility and dispersion stability in a vehicle and further storage stability and suitable as a water-based coating, etc. CONSTITUTION: This powder comprises inorganic colored particles prepared by applying (A) a modified polysiloxane modified with a polyether, a polyester or an aralkyl [e.g. the one of formula I 9146/28}R1 is a group of the formula (CH2 )1 [(l) is 1-15]; R2 is a group of (CH2 )m -CH3 [(m) is 0-15]; R3 is H, OH, COOH, etc.; R4 is H or R2 ; (q) is 1-15; (x) is 1-50; (y) is 1-300] or formula II 9146/28}R1 is a group of the formula (CH2 )l [(l) is 1-15]; R2 is H, OH, COOH, etc.; R3 is H or a group of the formula (CH2 )n -CH3 [(n) is 0-15]; (x) and (y) are each 1-500]] to the surfaces of particles.
Abstract:
PURPOSE:To raise the dispersion property by fixing Al or Si or oxides or hydroxides containing Al and Si and one or more kinds of oxides or hydroxides being selected from specified metal elements other than these. CONSTITUTION:This is magnetic powder for magnetic recording consisting of magnetic particles where parameter a dependent on the quantity of molecules at the time when As=K1M (K is a Constant peculiar to system) which materializes from the relation between the quantity (M) of high polymers and the amount (As) of saturated suction is 0.50 or over, and Al or Si or oxides or hydroxides containing As and Si and one or more kinds of oxides or hydroxides being selected from Sn, Sb, Ag, Pd, Cu, and Fe are fixed to the surfaces of the magnetic particles. This particle powder is excellent in is dispersion property, and is suitable for powder for record in high density, and in case that it is used for a magnetic tape, the surface resistance value can be lowered, and an excellent magnetic record medium without marring the magnetic property can be gotten.