摘要:
A cathode-precipitating electrodeposition coating having excellent low-temperature curability, said composition consisting essentially of(A) 100 parts by weight of a high molecular compound having a molecular weight of 500 to 10,000 and containing carbon-carbon double bonds with an iodine value of 50 to 500 and 30 to 300 millimoles of amino groups per 100 g,(B) 10 to 200 parts by weight of a product of reaction of a diglycidyl compound represented by the general formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 represent a hydrogen atom or a methyl group and n represents an integer of from 0 to 20, with at least one organic acid component selected from the group consisting of(a) both an alpha,beta-unsaturated dicarboxylic acid and an alpha,beta-unsaturated monocarboxylic acid, (b) an unsaturated fatty acid containing at least 10% by weight of carbon-carbon conjugated double bonds and having a molecular weight of 100 to 350, and (c) an alpha,beta-unsaturated monocarboxylic acid, a 1,2-dicarboxylic acid anhydride, and a monoepoxy compound in this sequence, and(C) 0.005 to 1.0 part by weight as metal of a manganese salt of an organic acid or manganese dioxide.
摘要:
Provided is a polymer composition having a melt index of 0.01 to 5.0 and a density of 0.870 to 0.940 prepared by blending 30 to 80 parts by weight of an ethylene/propylene copolymer having an intrinsic viscosity determined in decalin at 135.degree. C. of 1.7 to 10 dl/g and a density not higher than 0.945 which copolymer is obtained by copolymerizing ethylene with propylene, with 70 to 20 parts by weight of a high-pressure process polyethylene having an intrinsic viscosity determined in decalin at 135.degree. C. of not higher than 0.7 dl/g and a density of 0.915 to 0.935.
摘要:
A process for producing uroporphyrin III, which comprises cultivating a uroporphyrin III-producing microorganism of the genus Arthrobacter in a culture medium containing a carbon source, a nitrogen source and a mineral, and recovering uroporphyrin III from the culture broth.
摘要:
A process for separating and recovering coproporphyrin and uroporphyrin from a culture broth containing them, which comprises(1) adjusting the pH of the liquid phase of a cultured broth containing coproporphyrin and uroporphyrin to a range of 2.5 to 4 to form a solid precipitate containing coproporphyrin and uroporphyrin and collecting the precipitate,(2) preparing an aqueous alkaline solution of the solid precipitate obtained in step (1), adjusting the pH of the solution to a range of more than 4 but not over 6, to form a solid precipitate containing coproporphyrin, and collecting the precipitate, and(3) adjusting the pH of the residue left after collection of the precipitate in step (2) to a range of 1 to 4 to form a solid precipitate containing uroporphyrin and collecting the precipitate.The active porphyrin components thus obtained have physiological activity in regulating various organisms of the body, such as, for example, improving the function of the liver.
摘要:
A coating composition for cathode-precipitating electrodeposition consisting essentially of(A) 100 parts by weight of an unsaturated organic compound having a molecular weight of 500 to 10,000 containing a carbon-carbon double bond in an amount corresponding to an iodine value of 100 to 500, said unsaturated organic compound having bonded thereto, through a carbon-carbon bond, basic groups of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X are as defined in claim 1, the amount of said basic groups in said component (A) being 0.02 to 0.3 mole per 100 g of said component (A), and(B) 3 to 100 parts by weight of at least one compound represented by the general formula ##STR2## wherein R.sub.5, R.sub.6, n, m, Y and Y' are as defined in claim 1, said component (A) and said component (B) being neutralized with an organic acid or an inorganic acid and dissolved or dispersed in water.
摘要:
There is disclosed a rust inhibitor comprising glycerol-1-alkylphenoxy-3-glycerol ether of the formula ##STR1## wherein R is an alkyl group of C.sub.6-18. A composition having rust preventing effect may be obtained by adding the rust inhibitor to a mineral oil.
摘要:
Oil compositions are disclosed for effective use in the lubrication of rotary-type compressor for refrigeration equipment. The composition essentially comprises a polyglycol oil blended with specified amounts of at least one of additives or compounds of the group consisting of glycidyl ether type epoxy compounds, epoxidized fatty acid monoesters and epoxidized vegetable oils.
摘要:
According to the present invention, there is provided a process for preparing polyolefins comprising polymerizing or copolymerizing olefins using as catalyst a titanium-containing solid and an organometallic compound of a metal of Groups I to IV of the Periodic Table, said titanium-containing solid consisting of a reaction product obtained by copulverizing (1) a magnesium halide and/or a manganese halide, (2) an organohalide and (3) a tetravalent and/or a trivalent titanium compound(s).
摘要:
There is disclosed a rust inhibitor comprising glycerol-1-alkylphenoxy-3-ethyleneglycol ether of the formula ##STR1## wherein R is an alkyl group of C.sub.6-18. A composition having rust preventing effect may be obtained by adding the rust inhibitor to a mineral oil.
摘要:
A method for producing methyl tert-butyl ether which comprises the steps of: allowing isobutylene-containing hydrocarbon and methyl alcohol in a given molar ratio to react at a given temperature, pressure and liquid space velocity in the presence of strongly acidic cation-exchange resin catalyst; then passing the reaction product through a fixed bed filled with a water-insoluble, solid particulate acid-neutralizing agent; and subjecting the effluent to flashing operation, preferably also to rectification, to obtain methyl tert-butyl ether. Further included in the invention is the preparation of a fuel composition by mixing the thus obtained methyl tert-butyl ether into an internal combustion fuel.