Abstract: A process for preparing hollow polymer particles which comprises a seed-forming step for polymerizing a monomer mixture of an acid monomer having a carboxylic acid group and a non-ionic hydrophilic monomer in the presence of a polymerization initiator; a core-forming step for preparing a core, which can be swollen with an alkali, by polymerizing the monomer mixture of an acid monomer having a carboxylic acid group, a non-ionic hydrophilic monomer and a cross-linking agent to the seed latex; a shell-forming step in which a hydrophobic shell is formed on the hydrophilic core; and an alkali-swelling step.

Abstract: A process for producing a heat-resistant copolymer which comprises the emulsion polymerization of 50 to 75 parts by weight of .alpha.-methylstyrene, 5 parts by weight or less of styrene, 10 to 30 parts by weight of vinyl cyanide compound, 0.1 to 10 parts by weight of ethylenically unsaturated amide, and 10 parts by weight or less of acrylic alkyl ester or methacrylic alkyl ester, in the presense of 1.0 to 30 parts of a seed latex which comprises 50 to 80 parts by weight of .alpha.-methylstyrene, 5 parts by weight or less of styrene, 15 to 30 parts by weight of vinyl cyanide compound, 10 parts by weight or less of ethylenically unsaturated amide and 10 parts by weight or less of acrylic alkyl ester or methacrylic ester.

Abstract: In an apparatus for automatically ejecting the magazine in a compact disc player, a magazine loading a plurality of compact discs can be quickly ejected regardless of where the magazine is located during the play operation. The compact disc player includes a magazine installation portion X and a disc playing portion Y. A driver A is installed on a deck 1 and under the magazine installation portion X in which a magazine housing 2 accommodating a magazine 15 is installed. Further, a straight moving lever B which is straightly moved by the driver A is installed on the deck 1. Further, a locking and releasing lever C pivoted by the straight moving lever B is installed under the magazine housing 2.

Abstract: A control system for automatically controlling the operation of actuators of an excavator.

Abstract: The present invention relates to a process for the preparation of impact resistant and high gloss thermoplastic resin which comprises blending graft polymer latex (A) and graft polymer latex (B), wherein the graft polymer (A) having 40,000 to 120,000 of molecular weight and 60 to 120 % of the degree of grafting is produced by grafting monomers onto 10 to 40 parts by weight of rubber latices containing small rubber particles, and then the graft polymer (B) having 40,000 to 120,000 of molecular weight and 25 to 45 % of the degree of grafting is produced by grafting monomers onto 40 to 80 parts by weight of rubber latices containing large rubber particles.

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.

Abstract: The present invention relates to a process for preparing thermoplastic resins having a high surface gloss and excellent impact resistance.A process of the present invention comprises blending the graft polymer (D) having a grafting degree of 60.about.120% which is prepared by polymerizing an aromatic vinyl compound and a vinyl cyanide compund to 10.about.40% by weight of rubber latex (B) having 0.20.about.0.35.mu. of an average particle diameter, agglomerated by the shearing force, and the graft polymer (C) having a grafting degree of 25.about.45% which is prepred by polymerizing an aromatic vinyl compound and a vinyl cyanide compound to 40.about.80% by weight of rubber latex (A) having 0.25.about.0.40.mu. of an average particle diameter, agglomerated by the acidulation or made by the emulsion polymerization. In the said thermoplastic resins, the weight ratio of the latex (A) to the latex (B) is from 90/10 to 50/50.

Abstract: The disclosure demonstrates the inhibition of replication of human cytomegalovirus (HCMV) in cultured human embryo skin muscle cells by two separate subclasses of direct-acting smooth muscle relaxing agents alone or in combination with each other. These two subclasses are characterized mechanistically as calcium influx blockers (or calcium channel blockers) and cyclic nucleotide modulators. More specifically, the class of calcium influx blockers is exemplified by the drugs verapamil (and methoxyverapamil), nifedipine (the prototype drug of 1,4 dihydropyridines), and diltiazem. The class of cyclic nucleotide modulators is exemplified by the drugs isobutylmethylxanthine, papaverine (and its synthetic analog dioxyline), forskolin, and sodium nitroprusside. In addition, the present disclosure demonstrates that agents from one class, e.g., a calcium influx blocker, act synergistically when used in combination with agents from the other class, e.g., cyclic nucleotide modulators.

Abstract: The disclosure demonstrates the inhibition of replication of human cytomegalovirus (HCMV) in cultured human embryo skin muscle cells by two separate subclasses of direct-acting smooth muscle relaxing agents alone or in combination with each other. These two subclasses are characterized mechanistically as calcium influx blockers (or calcium channel blockers) and cyclic nucleotide modulators. More specifically, the class of calcium influx blockers is exemplified by the drugs verapamil (and methoxyverapamil), nifedipine (the prototype drug of 1,4 dihydropyridines), and diltiazem. The class of cyclic nucleotide modulators is exemplified by the drugs isobutylmethlyxanthine, papaverine (and its synthetic analog dioxyline), forskolin, and sodium nitroprusside. In addition, the present disclosure demonstrates that agents from one class, e.g., a calcium influx blocker, act synergistically when used in combination with agents from the other class, e.g., cyclic nucleotide modulators.