Abstract: The present invention provides a blue dye composition having excellent percentage of exhaustion which comprises a compound of formula(I) and a compound of formula(II): ##STR1## wherein each of said R's, which may be the same or different, represents a C.sub.1-4 alkyl group.

Abstract: The present invention relates to an ultraviolet light curable coating composition having a shorter curing time and an excellent abrasion resistance, which comprises:(A) an aqueous-alcoholic base resin dispersion containing, based on the weight of the total solids present in the base resin dispersion,(a) 5 to 75% by weight of a colloidal silica and(b) 25 to 95% by weight of a partial condensate of a silanol of formula:R SI(OH).sub.3whereinR is a C.sub.1-6 alkyl, C.sub.6-20 aryl or hydroxy group; and(B) an ultraviolet light curable catalyst of formulaAr.sub.3 S.sup.+ MX.sub.n.sup.-whereinAr.sub.3 is a triphenyl, tri(4-methoxy)phenyl, tri(3,5-dimethyl-4-hydroxyphenyl), diphenyl-2,5-dimethylphenyl or tri(4-methyl) phenyl group; andMX.sub.n.sup.- is a metallic halide anion.

Abstract: The present invention relates to a polyolefinic resin composition having superior paintability which comprises:(A) 40 to 80 parts by weight of a crystalline polypropylene resin;(B) 1 to 50 parts by weight of a thermoplastic olefinic rubber prepared by dynamic-crosslinking 10 to 70 parts by weight of a crystalline polypropylene resin with 90 to 30 parts by weight of an ethylene-.alpha.-olefin rubber;(C) 0.5 to 30 parts by weight of a polypropylene resin modified by grafting a polar monomer which has a physical affinity, but is not reactive, with an ethylene copolymer or ethylene copolymer rubber modified with .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof; and(D) 1 to 40 parts by weight of said modified ethylene copolymer or ethylene copolymer rubber based on 100 parts by weight of the total weight of the components (A),(B) and (C).

Abstract: The present invention provides a process for preparing a flame retardant styrenic resin which comprises:(1) an initiation step wherein 3 to 10 parts by weight of a bromostyrene compound, 10 to 25 parts by weight of styrene, 5 to 10 parts by weight of an unsaturated nitrile, 0.01 to 0.5 part by weight of a chain transfer agent and 0.01 to 1.0 part by weight of an initiator are introduced to a polymerization reactor and polymerized until the conversion reaches 30 to 50%;(2) a control step wherein 10 to 35 parts by weight of a bromostyrene compound, 20 to 50 parts by weight of styrene, 5 to 20 parts by weight of an unsaturated nitrile, 0.01 to 1.0 part by weight of an initiator and 0.01 to 0.5 part by weight of a chain transfer agent are introduced to the reactor in one or more divisions in accordance with the progress of said polymerization until the conversion reaches 80 to 90%; and(3) an optimization step wherein 3 to 10 parts by weight of styrene, 5 parts by weight or less of an unsaturated nitrile, 0.

Abstract: The present invention relates to a cephalosporin compound including the pharmaceutically acceptable non-toxic salts, physiologically hydrolyzable esters, hydrates and solvates thereof of the formula(I) and its isomers: ##STR1## wherein: R.sup.1 is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-4 alkynyl or --C(R.sup.3)(R.sup.4)COOH wherein R.sup.3 and R.sup.4, which may be the same or different, are hydrogen, C.sub.1-4 alkyl group, or constitute a C.sub.3-7 cycloalkyl group with the carbon atoms to which R.sup.3 and R.sup.4 are attached;R.sup.2, which may be attached to N.sup.a or N.sup.b, is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-7 cycloalkyl, aryl or amino group; andQ.sub.1 and Q.sub.2, which may be the same or different, are CH or N.

Abstract: The present invention provides a process for preparing thermoplastic resin compositions having excellent HCFC resistance which comprises:a first step wherein 50 to 90 parts by weight of a monomer mixture of 50 to 80% by weight of a vinyl cyanide, 20 to 50% by weight of an aromatic vinyl compound and 5% by weight or less of an unsaturated carboxylic acid or esters thereof or a vinyl acetate are graft-polymerized in the presence of 10 to 50 parts by weight of a rubber latex and also in the presence of 0.001 to 2.0 parts by weight of a polymerization inhibitor to prepare a graft polymer(A);a second step wherein 100 parts by weight of a monomer mixture of 50 to 80% by weight of a vinyl cyanide, 20 to 50% by weight of an aromatic vinyl compound and 5% by weight or less of an unsaturated carboxylic acid or esters thereof are polymerized, while adding 2.