摘要:
Bacterium belonging to a new genus, and a process for production of carotenoid pigment selected from the group consisting of astaxanthin, adonixanthin, .beta.-carotene, echinenone, canthaxanthin and zeaxanthin, comprising the steps of culturing a bacterium capable of producing at least one of the carotenoid pigments, and recovering an individual carotenoid pigments.The producer bacterium belongs to new genus.According to the present process various carotenoids can be produced in an industrial scale. By the present process (3S, 3'S)-astaxanthin can be produced in an almost 100% purity.
摘要:
An oil-soluble polyester having a weight average molecular weight of 10,000 to 1 000,000, which is a polycondensate prepared by polycondensing the following ingredients (A), (B) and (C): (A) a divalent higher carboxylic acid ingredient, (B) a divalent alcohol ingredient comprising a glycol represented by the following formula: HO--CH.sub.2 --CR.sup.1 R.sup.2 --CH.sub.2 --OH wherein R.sup.1 and R.sup.2 represent a alkyl group, and the sum of carbon numbers in R.sup.1 and R.sup.2 is at least three, and (C) 0.1 to 15% by mole, based on the total of ingredients (A) and (B), of at least one multi-valent ingredient selected from a carboxylic acid with a valency of at least three and an alcohol with a valency of at least three. This oil-soluble polyester is useful as an additive for a lubricating oil.
摘要:
An electrorheological fluid comprising an electrically insulating liquid and acid, iodine or alcohol-treated, or iodine-treated and subsequently electrically insulating film-coated, dispersible carbonaceous particles dispersed therein has a high electrorheological effect even without lowering in a high temperature region, though it is a water-free system.
摘要:
A fluid having both magnetic and electrorheological effects contains electroconductive ferromagnetic particles, the surfaces of which are coated with a particular electrically insulating layer having a critical thickness and electrical resistance, dispersed in an electrically non-conductive solvent.
摘要:
Combustion air is supplied being divided into inner and outer cylinders of a main burner body, and liquid fuel is injected and burnt by a liquid fuel injection nozzle provided in the inner cylinder, wherein a tip end injection hole of the nozzle faces outside of the nozzle through a fore end opening of the inner cylinder. An annular flame piloting baffle plate for the inner cylinder is provided in front of the injection hole of the tip end opening of the inner cylinder, a swirler is provided inside of a tip end portion of the outer cylinder, and an annular flame piloting baffle plate is provided at a tip end opening portion of a cylindrical space formed between the outer and inner cylinders. Due to the foregoing construction, flames of the burner for burning liquid fuel are stabilized and an amount of generated NOx gas is reduced.
摘要:
A simple manufacturing process for obtaining a carbon/carbon composite of superior performance is provided without using a carbon fiber fabric which is expensive and without going through the step of fixing fibers together using a binder.A precursor fiber for a carbon fiber which precursor fiber has been rendered infusible is subjected to uniaxial pressing at a temperature lower than the temperature adopted in the infusiblizing treatment, and then a carbonization treatment is performed.According to the present invention, a primary-pressed carbon material can be produced without using a binder, thus resulting in that not only the carbon material but also a carbon/carbon composite can be produced in a simple manner.
摘要:
A process for the preparation of an adventive embryo of a plant belonging to the genus Podophyllum, comprising the steps of preparing cells of a plant belonging to the genus Podophyllum, incubating the cells in a sugar free medium or a medium containing up to 2% by weight sugar, and then incubating the cells in a medium containing more than 2% by weight of sugar to generate an adventive embryo; a process for the production of a podophyllotoxin compound comprising the steps of preparing an adventive embryo of a plant belonging to the genus Podophyllum, culturing the adventive embryo to generate an adventitious organ, culturing the adventitious organ to produce a podophyllotoxin compound, and recovering the podophyllotoxin compound; and a process for the production of a podophyllotoxin compound, comprising the steps of preparing de-differentiated cells or tissue of a plant belonging to the genus Podophyllum culturing the de-differentiated cells or tissue in a liquid medium to generate a differentiated organ, culturing the differentiated organ on a solid medium to produce a podophyllotoxin compound, and recovering the podophyllotoxin compound.
摘要:
A radiation-curable resin which exhibits a high curing rate and good adhesion property when used as a binder for printing inks and a binder for coating materials, obtained by reacting (a) a phenolic hydroxyl group-containing aromatic hydrocarbon resin having a hydroxyl value of 40 to 130 mg.KOH/g resin prepared by polymerizing an aromatic fraction with a phenol compound in the presence of a Friedel-Crafts catalyst with (b) a polyisocyanate in an excessive amount relative to hydroxyl group, and then reacting remaining isocyanate groups with (c) and .alpha.,.beta.-unsaturated compound having an active hydrogen.
摘要:
There is here disclosed an apparatus for continuously measuring on an on-line system a flash point of an intermediate fraction such as kerosene in a petroleum distillation process from a difference between gas concentrations of the intermediate fraction at two predetermined temperatures; and a method for controlling the flash point of the intermediate fraction from the thus measured value.
摘要:
A cationic water-dispersible resin having quarternary ammonium groups is produced by reacting an acid-addition salt of a polymeric tertiary amine derived from a partially epoxidized polybutadiene-based polymer with an aliphatic secondary amine. The cationic water-dispersible resin is useful for preparing pigment paste and coating compositions to be used in cathodic electrodeposition coating systems.