Abstract: The present invention is to provide a method of producing pigment dispersions which can be suitably used in the fields where higher levels of coloring manifesting ability and fluidity are required, such as in ink jet recording liquids or color filter coloring compositions, and in which pigments are dispersed to such a finer particle size that renders them applicable in the field of printing inks or the like as well and, further, which show very good pigment dispersion stability even after the lapse of time.

Abstract: A halogenated flame retardant for a thermoplastic resin with carbonyl linkages in the main chain such as polyethylene terephthalate or polybutylene terephthalate is obtained by the modification of a brominated bisphenol A epoxy resin optionally advanced with brominated bisphenol A by reaction of the epoxy groups with a C1-C8 alcohol such as methanol or butanol to the extent that the ratio of unmodified epoxy groups to alcohol-modified epoxy groups is from 2/1 to 1/2.

Abstract: A halogen containing fire retardant represented by chemical formula (1) wherein the end groups X and Y are composed by A or B represented by chemical formula (2); and the said fire retardant is a mixture of the composition containing 1 to 40% of X=Y=A, 30 to 70% of X=A and Y=B, smaller than 70% of X=Y=B and, degree of polymerization n is n.gtoreq.0 wherein the content of n=0 is smaller than 60% to the total amount. ##STR1## wherein A and B are represented by following chemical formulae, and R of chemical formula B is an alkyl group of carbon number 1 to 8 alone, or 1 to 79% of alkyl group of carbon number 1 to 8 and 79 to 1% of tribromophenyl group, and total amount of R is smaller than 80%.

Abstract: A fire-retardant compound including bromine indicated by general formula (1), wherein the end group X and Y are comprised by A or B shown in formula (2), and the said fire-retardant compound is a mixture of the composition including 15 to 30% of X=Y=A, the composition including 40 to 60% of X=A and Y=B and the composition including 20 to 35% of X=Y=B, and degree of polymerization n is indicated by an integral number from 0 to 30, and a flame-retarded thermoplastic resin including said fire-retardant compound.

Abstract: An automotive air conditioning system equipped with an electrical compressor uses a single-shaft, dual output generator to provide a low voltage output to drive existing 12-V or 24-V automotive electrical equipment and a high voltage output to drive the air conditioning motor-driven compressor, and a control device to control the electrical compressor.

Abstract: A sliding vane type rotary compressor having a rotor, at least one vane slidably mounted on the rotor, a cylinder accomodating the rotor and the vane, and end plates fixed to both ends of the cylinder so as to close vane chambers defined by the vane, the rotor and the cylinder at both sides of the vane chamber. The improvement comprises that the compressor is constructed to meet the following condition:0.025<.theta..sub.s a/Vo<0.080where, a is a value given by the following equation of: ##EQU1## .theta. represents the angle (radian) formed around the center of rotation of the rotor between the end of the vane closer to the cylinder and the cylinder top where the distance between the inner peripheral surface of the cylinder and the outer peripheral surface of the rotor is smallest;.theta..sub.s represents the rotation angle .theta. (radian) at the instant of completion of the suction stroke;Vo represents the volume (cc) of the vane chamber when the rotation angle .theta. is .theta..sub.s ; anda(.theta.

Abstract: A rotary compressor comprises an open-ended cylinder having its open ends closed by end plates and an eccentrically rotatable rotor housed inside the cylinder. A hydrodynamic seal is provided on either the rotor or each of the end plates for minimizing any possible unwanted leakage of lubricant oil.

Abstract: An improved vane type rotary compressor provided with a control mechanism of a lubricating oil supply passage by which the lubricating oil supply passage is arranged to be opened during operation of the compressor, and to be closed during shut-down of the compressor for obtaining a sufficient amount of lubricating oil supply during operation and also for preventing reverse rotation during shut-down of the compressor.

Abstract: 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.