Abstract: A colored polyvinyl chloride paste composition comprising(A) a polyvinyl chloride paste, and(B) a powdery coloring agent comprising (1) a pigment and (2) a monomeric ester of an aromatic carboxylic acid, said ester containing 1 to 6 ester bonds (--COO--) in the molecule and having a melting point of at least 40.degree. C.

Abstract: A glass fiber-reinforced thermoplastic resin composition comprising (I) a thermoplastic polyurethane derived from polybutylene terephthalate and a polyfunctional isocyanate and (II) glass fibers surface-coated with 0.05 to 3% by weight of an aminosilane or epoxy silane and having a length of 0.01 to 0.2 mm and a length-to-diameter ratio of 1.5 to 20. The composition can give molded articles having high mechanical strength and thermal stability and being free from warpage.

Abstract: A flame-retarding thermoplastic polyester resin composition comprising (1) a polyester obtained from a terephthalic acid or an alkyl ester thereof and a glycol having 2 to 4 carbon atoms, (2) an organohalogen compound, (3) an inorganic flame-retarding supplementary agent, and (4) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50%, an ethylene/vinyl acetate copolymer and a saponified ethylene/vinyl acetate copolymer, and optionally (5) a reinforcing agent; and a process for production thereof.

Abstract: A flow rectifying device is provided in a cultivation basin used in the cultivation of algae of the type in which there is a horizontal circulating flow of the cultivation water. The flow rectifying device avoids the formation of puddles or stagnant water and provides for uniform flow of the circulating water as the direction of flow changes at corners of the basin. The flow rectifying means includes a plurality of curved parallel fins for smoothly deflecting the flow of the circulating cultivation water and thereby prevents contamination of the cultivation liquid by preventing algae from being destroyed. The apparatus is particularly useful in cultivating blue-green algae of the genus Spirulina and other aquatic lower algae.

Abstract: A method for producing a fishing rod made of a glass fiber-reinforced synthetic resin which comprises impregnating a glass cloth with a thermosetting synthetic resin to form a prepreg, wrapping the prepreg about a tapered mandrel, curing it under heat, and then pulling out the mandrel, wherein the glass cloth has letters, geometrical figures or other decorative designs applied to the whole or a part of its surface by printing or coating, and the thermosetting synthetic resin is the one which can give a transparent cured product.

Abstract: A thermoplastic resin is colored with a carbon black pigment in the presence of a sulfonamide-substituted metal phthalocyanine dyestuff of the general formula ##STR1## wherein MePc is a metal phthalocyanine residue, R.sub.1 is a hydrogen atom or an alkyl group, R.sub.2 is an alkyl group, R.sub.3 is a hydrogen atom or an alkoxyalkyl group, R.sub.4 is an alkoxyalkyl group, m is an integer of 0 to 4, n is an integer of 0 to 4, and m+n is an integer of 1 to 4. The use of the specified metal phthalocyanine dyestuff affords a completely black or bluish black thermoplastic resin free from a reddish hue which is inherent to coloration with carbon black.

Abstract: A nematic liquid crystalline compound of the general formula ##STR1## wherein R.sub.1 represents a linear alkyl group containing 3 to 8 carbon atoms and R.sub.2 represents a linear alkyl g group containing 3 to 7 carbon atoms, or a cyano group, with the proviso that when R.sub.2 represents a linear alkyl group containing 3 carbon atoms, R.sub.1 does not represent a linear alkyl group containing 3 or 7 carbon atoms, and when R.sub.2 represents a cyano group, R.sub.1 does not represent a linear alkyl group containing 3 carbon atoms.

Abstract: Novel trans(equatorial-equatorial)1,4-disubstituted cyclohexane derivatives of the general formula ##STR1## wherein R represents a linear alkyl group containing 3 to 7 carbon atoms, and R' represents a linear alkoxy group containing 2 to 5 carbon atoms or a cyano group. These compounds are nematic liquid crystals, and a composition containing at least one of these compounds is useful as an electro-optical display material.

Abstract: A process is provided for isomerizing (1) cis-3-methyl-.DELTA..sup.4 -tetrahydro-cis,cis-phthalic anhydride into (2) trans-3-methyl-.DELTA..sup.4 -tetrahydro-cis,cis-phthalic anhydride, which is its stereoisomer, by heating the compound (1) preferably at a temperature of 100.degree. to 250.degree. C. in the presence of an alkali metal compound such as lithium hydroxide, sodium hydroxide or sodium acetate. A mixture of said compounds (1) and (2) in a ratio by weight of 7:3 to 2:8 obtained by the isomerization reaction is liquid at room temperature and can be used advantageously as a curing agent for epoxy resins.

Abstract: A method for clear-coloring of linear aromatic polyesters, which comprises mixing at least one pigment selected from the group consisting of a pigment of the formula ##STR1## and pigments of the formula ##STR2## wherein X.sub.1 and X.sub.2 represent a hydrogen atom, a chlorine atom or a methyl group, and X.sub.3 represents a chlorine atom or a methyl group, with a linear aromatic polyester, and heating the mixture to the melting temperature of the polyester to dissolve or substantially dissolve the pigment in the polyester.

Abstract: A composition for water-base paints, said composition comprising (I) a water-soluble resin, and (II) a water-dispersible polymer containing at least one group selected from the class consisting of hydroxyl and carboxyl groups, said water-soluble resin being obtained by polymerizing 50 to 99.5% by weight of an alkyl ester of an .alpha.,.beta.-monoethylenically unsaturated acid or an alkenyl benzene, 0.5 to 20% by weight of an .alpha.,.beta.-monoethylenically unsaturated acid and 0 to 30% by weight of a hydroxyalkyl ester of an .alpha.,.beta.-monoethylenically unsaturated acid in the presence of at least one unsaturated compound selected from the group consisting of alkyd resins containing a polymerizable unsaturated group, epoxy esters containing a polymerizable unsaturated group, drying oils, fatty acids of drying oils and diene polymers, and water-solubilizing the product with ammonia or an amine.

Abstract: Nematic liquid crystalline 4,4'-substituted derivatives of cyclohexene-1-carboxylic acid phenylthiol esters represented by the general formula ##STR1## wherein R.sub.1 is a linear alkyl group containing 3 to 7 carbon atoms, and R.sub.2 is a linear alkoxy group containing 2 to 5 carbon atoms.

Abstract: A process for producing a resin dispersion characterized in that an ethylenically unsaturated monomer capable of forming a polymer insoluble in an aqueous medium is polymerized in a solution formed by dissolving in said aqueous medium a water-soluble polymer derived from(1) 10-90% by weight of a hydroxyalkyl (meth-)acrylate expressed by the following general formula ##STR1## wherein R is a hydrogen atom or a methyl group, and l is an integer of 2, 3 or 4,(2) 10-90% by weight of a polyalkyleneglycol mono (meth-)acrylate expressed by the following general formula ##STR2## wherein R is a hydrogen atom or a methyl group, m is an integer of 2 or 3, and n is an integer of 2 to 20, and(3) 0-30% by weight of another ethylenically unsaturated monomer.

Abstract: A substantially NCO-free radiation-curable prepolymer which is the reaction product of (A) an organic diisocyanate with (B) a hydroxyl-containing unsaturated monomer and (C) a polyester polyol containing 2 to 8 hydroxyl groups per molecule, the polyester polyol (C) having a number average molecular weight of 400 to 6,000 and a hydroxyl equivalent weight of 200 to 3,000 and containing a dimer acid residue derived from 9 to 70%, based on the weight of the total weight of the starting materials, of dimer acid and an alcohol residue derived from 20 to 75%, based on the total weight of the starting materials, of an ethylene oxide or propylene oxide adduct of bisphenol A with the proportion of the oxide added being 2 to 4 moles.

Abstract: A cross-linkable vinyl chloride resin composition comprising as indispensable components 100 parts by weight of a vinyl chloride resin, 5.0 to 80 parts by weight of an organic peroxide-cross-linkable elastomer, 0.1 to 5.0 parts by weight of an anti-scorching agent, 1 to 4 parts by weight of a polymerizable compound having at least two double bonds and 0.05 to 5.0 parts by weight of an organic peroxide.

Abstract: A resin composition for powder paints, said composition comprising (I) 70 to 97% by weight of a polyester resin containing free carboxyl groups in the molecule and having an acid value of 20 to 100 KOH mg/g and a softening point of 70.degree. to 150.degree. C and (II) 3 to 30% by weight of glycidyl p-glycidyloxybenzoate.

Abstract: An indandione pigment having high tinting strength and good weatherability and light fastness of the formula ##STR1## WHEREIN A is a phenylene or naphthylene group optionally substituted by a halogen atom, a lower alkyl group, a lower alkoxy group or a nitro group; n is 2 or 1; and B represents a direct bond or an n valont aromatic radical.The pigment mentioned above can be prepared by reacting an indandione derivative of the formula ##STR2## (E is an alkoxy group with 1 to 3 carbon atoms, or an amino group; and G is an oxygen atom, or ##STR3## in which Q is a lower alkyl group, and Q.sub.2 is a lower alkyl group or a phenyl group) with an amino compound of the formula H.sub.2 N--B--NH.sub.2 ]n-1.

Abstract: A liquid crystalline composition comprising a nematic liquid crystalline substance and as an additive, a 1,8-diazo-bicyclo(5,4,0) undecene-7 alkyl ammonium salt of benzoic acid optionally having a substituent at the paraposition.

Abstract: A coloring composition for polyethylene which comprises organic pigment and at least one organometal compound selected from the group consisting of organosilane compounds and organotitanium compounds.

Abstract: A photocurable resin composition comprising (I) an unsaturated polyester resin obtained by reacting (B) an epoxy compound containing at least about 2 epoxy groups per molecule obtained by reacting metylidene diphenol with .beta.-methylepichlorohydrin or epichlorohydrin, with (C) an unsaturated monobasic acid in the presence or absence of (A) a dicarboxylic acid containing at least 4 methylene groups interposed between the two carboxyl groups, or a carboxyl-terminated oligopolyester obtained by esterifying a saturated or unsaturated dibasic acid with a polyhydric alcohol, (II) a polymerizable vinyl monomer capable of addition polymerization with the unsaturated polyester resin (I), and (III) a photopolymerization initiator having an action of promoting radical polymerization by the irradiation of light.