摘要:
Dielectric circuit components such as a dielectric strip, dielectric blocks and dielectric ring inserted between conductive plates are molded from a thermoplastic material. As the thermoplastic material, thermoplastic resin is used which has a dielectric constant not greater than 2.4. The dielectric circuit components may be injection-molded from an injection-moldable high polymer material which contains fluorine and has a melting point not greater than 300.degree. C.
摘要:
A polymer actuator comprising a conductive powder compact comprising a conductive polymer and a dopant, an ion donor, a work electrode, and a counter electrode, whereby it contracts or extends when voltage is applied between the work electrode and the counter electrode.
摘要:
Ultraviolet absorption materials comprising an amide-containing guanidine derivative of the following general formula (I): or a salt thereof are disclosed. The materials have high solubility, and can be blended as ultraviolet absorption materials with a variety of cosmetics and are adsorbed well by skin and/or hair.
摘要:
A gelling agent for an oil, which contains at least one compound (A) and at least one compound (B), and a gel composition containing the gelling agent and an oil: wherein R1 is a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 7 to 17 carbon atoms, R2 is a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 1 to 26 carbon atoms, R3 and R4 are each independently a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 1 to 26 carbon atoms, and R5 is a straight chain or branched chain, saturated or unsaturated hydrocarbon group having 7 to 17 carbon atoms.
摘要:
A method for preparing a highly purified N-long chain acyl neutral amino acid for use of a detergent and the like in a simple and convenient manner and in a high yield by reacting a neutral amino acid such as glycine, &ggr;-aminobutyric acid, and alanine, with a saturated or unsaturated fatty acid halide having 8 to 22 carbon atoms, wherein the reaction is performed in a mixture of water and one or more kinds of hydrophilic organic solvents selected from the group consisting of acetone, acetonitrile, a secondary alcohol having 3 or 4 carbon atoms, and a tertiary alcohol having 4 carbon atoms such as isopropanol, sec-butanol, and tert-butanol in the presence of a base.
摘要:
The molecular composite material having excellent properties such as mechanical strength, heat resistance, solvent resistance, etc. is produced by (a) polymerizing an aromatic diaminodithiol compound, of which hydrogen atoms of thiol groups of aromatic diaminodithiol compound are substituted with substituted or unsubstituted alkyl groups, with a dicarboxylic acid derivative to form an aromatic polythiazole prepolymer, (b) dissolving the aromatic polythiazole prepolymer in an organic solvent to prepare a solution thereof; (c) adding a monomer of the matrix polymer to the solution to polymerize the monomer to the matrix polymer in the solution; (d) removing the organic solvent from a mixture of the aromatic polythiazole prepolymer and the matrix polymer; and (e) heating a mixture of the aromatic polythiazole prepolymer and the matrix polymer to cause a thiazole ring closure reaction of the aromatic polythiazole prepolymer.
摘要:
A neural network of a neuro computer has learned a prediction pattern based on the vehicle speed and time series data of the acceleration stroke received before the shipment of a vehicle. Based on the vehicle speed and time series data of the acceleration stroke, a request on the acceleration is predicted by a neural network computer during driving. At this time, an acceleration sensor or the like is not used, and the acceleration request is predicted more directly. Based on the prediction result, the throttle sensitivity is computed and set. A throttle computer refers to the throttle sensitivity to open or close the throttle valve to control the output of the engine.
摘要:
The present invention relates to N-long chain acyl neutral amino acid esters of the general formula (I): ##STR1## wherein X represents an ester-forming residue of a sterol; COR represents a long chain acyl group having 8 to 22 carbon atoms; R.sub.1 and R.sub.2 are identical or different from each other, each represents a hydrogen atom or a straight chain or branched alkyl group having 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together form an alkylene group; and n represents 0, 1 or 2. The compounds are particularly useful in cosmetic or pharmaceutical preparations for external use.
摘要:
A method of producing a prepolymer of aromatic polythiazole from an aromatic diaminodithiol compound salt and a dicarboxylic acid derivative, comprising the step of polymerizing the aromatic diaminodithiol compound salt and the dicarboxylic acid derivative in the presence of a phosphoric acid compound at a temperature of 70.degree.-140.degree. C.
摘要:
To provide a novel substance having an excellent water-dispersibility capable of forming an emulsion which spreads rapidly onto the skin, does not undergo aggregation or segregation due to a salt, and is excellent in a low temperature stability. The aforementioned problems were found to be solved by means of a certain polysaccharide and the invention was established.