Abstract: A mixture containing a single-chain tissue plasminogen activator (tPA) and/or double-chain tPA is brought into close contact with a column carrying an immobilized Erythrina trypsin inhibitor as an affinity agent. Adsorbed protiens are eluted with eluents having different pHs with or without arginine or benzamidine, so that single-chain tPA is obtained in the eluent with a pH at least 4.5 and double-chain tPA is obtained in the eluent with a pH lower than 4.5.

Abstract: Thermally printable sheets, such as paper coated with a polymer such as a polyester or a polyacrylonitrile are colored yellow by a thermal transfer printing process, e.g., using a decal printing transfer sheet, which employs as a yellow dyestuff a 2-pyridone of the formula ##STR1## wherein R.sup.1 is a lower alkyl, and R.sup.2 is lower alkyl, lower alkoxy-lower alkyl, carbocyclic aryl-lower alkyl, cyclo-lower alkyl, lower alkenyl or lower alkoxycarbonylmethyl.

Abstract: A method for preparing .alpha.-L-aspartyl-L-phenylalanine methyl ester having improved solubilization by the isolation thereof from an aqueous medium containing at least one additive selected from the group consisting of sodium alginate, sodium salt of carboxymethylcellulose, sodium starch glycolate and sodium polyacrylate.

Abstract: This invention relates to a novel preparation process of 4-(4-hydroxyphenyl)-cyclohexanol, which comprises subjecting 4-(4-hydroxphenyl)-3-cyclohexen-1-ol to reduction. 4-(4-Hydroxyphenyl)-cyclohexanol is a compound useful as a monomer for liquid crystalline polyesters and the like.

Abstract: A polyolefin resin composition is produced by pulverizing and surface-treating an inorganic filler together with a surface treatment agent in a dry or semi-dry pulverizing means, mixing the thus-treated inorganic filler with a specified amount of a polyolefin resin and granulating the resultant mixture, and thereafter mixing the thus-obtained granular mixture with an additional granular or pelletized polyolefin resin at a specified ratio.

Abstract: Novel 3-substituted phenyl-2-isoxazoline-5-carboxylic acids or esters thereof. These compounds have excellent properties as plant growth regulators.

Abstract: This invention relates to a strippable coating film for use as a masking material serving to create attractively finished boundaries, for example, in multi-color painting of automobiles and the like, as well as a coating method using such a coating film.A coating film containing 1 to 20 parts by weight of carbon black per 100 parts by weight of the resin component present therein is suitable. Especially preferred is a coating film formed of an acrylic emulsion paint and having an adhesion to the substrate of 20 to 1000 g/inch as expressed in terms of 180.degree. peeling strength. It is disclosed that, by equipping a YAG laser with a Q-switching oscillator unit and operating the Q-switch at a pulse repetition frequency of 0.5 to 30 kHz, the coating film can be cleanly cut to achieve an attractive finish in multi-color painting.

Abstract: In the production of 2-chloropropionaldehyde by the hydroformylation of vinyl chloride in the presence of a rhodium catalyst in combination with a base, the activity of the catalyst can be improved significantly by maintaining the concentration of produced 2-chloropropionaldehyde in the reaction solution at not higher than 10%.Further, it is possible to continue the reaction for a long period of time while maintaining the activity of the catalyst at a high level by carrying out the reaction in a water insoluble or hardly soluble solvent simultaneously with water extraction, separating the catalyst solution and the extraction water from each other, separating 2-chloropropionaldehyde from the extraction water by distillation or similar means so as to lower its concentration to a given level or below, and using the extraction water again after subjecting it to an anion exchange treatment.

Abstract: Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: ##STR1## wherein X is S or NH; R.sub.1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R.sub.2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.

Abstract: A novel compound, 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol, and a novel preparation process of 4,4'-biphenol by using the novel compound as the raw material.4-(4-Hydroxyphenyl)-3-cyclohexene-1-ol can be obtained by conducting a thermal decomposition reaction of 4,4-bis(4-hydroxyphenyl)cyclohexanol. 4,4'-Biphenol can be industrially manufactured by conducting a dehydrogenation reaction of 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol.

Abstract: The present invention is directed to a method for preparing epichlorohydrins by epoxidizing allyl chlorides with an organic hydroperoxide, and the epoxidation reaction is performed in the presence of a catalyst having titanium atoms bound to a silicon dioxide carrier and having silanol groups on the same carrier, whereby epichlorohydrins are obtained in high yield.

Abstract: A novel compound, 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol, and a novel preparation process of 4,4'-biphenol by using the novel compound as the raw material.4-(4-Hydroxyphenyl)-3-cyclohexene-1-ol can be obtained by conducting a thermal decomposition reaction of 4,4-bis(4-hydroxyphenyl)cyclohexanol. 4,4'-Biphenol can be industrially manufactured by conducting a dehydrogenation reaction of 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol.

Abstract: Disclosed herein are N-(2-chloro-4-nitrophenyl)-benzenesulfonamide derivatives represented by the following general formula (I): ##STR1## wherein X and Y individually mean a hydrogen or chlorine atom and Z denotes a chlorine atom or trifluoromethyl group, and agricultural fungicides containing said derivatives.

Abstract: Monosialoganglioside is prepared by heating ganglioside at a temperature higher than 50.degree. C. in a liquid medium containing water.

Abstract: In a process for producing thermosetting resins by the polymerization reaction of a cyclic carbonate with a polyvalent isocyanate compound, potassium fluoride is used as the catalyst. If desired, a co-catalyst selected from the group consisting of polyethylene oxides, cryptands and quaternary onium salts is additionally used. The thermosetting resins so produced have excellent impact stength and, therefore, are useful as molded materials and various substrates.

Abstract: An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote ether groups respectively having R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each of which is a saturated or unsaturated hydrocarbon group having 4-12 carbon atoms.

Abstract: A process for copolymerizing lactide and glycolide by using a specific amount of stannous octoate as a catalyst in the presence of a polymerization regulator at temperature of 200.degree.-230.degree. C. to prepare dl-lactic acid-glycolic acid-copolymers which contain 50-60 mol % of a dl-lactic acid unit and 40-50 mol % of a glycolic acid unit and have inherent viscosity of 0.4-0.6 in chloroform.

Abstract: An electrophotographic toner, which can exhibit good fixation in high-speed copying and is not affected by an environment such as high humidity, is provided by containing, as a principal component thereof, a resin blend composed of (a) 40-90 wt. % of a vinyl copolymer (I) formed of 70-97 wt. % of an aromatic vinyl monomer, 3-30 wt. % of an alkyl fumarate which is an C.sub.1-8 monoalkyl or dialkyl ester and 0-5 wt. % of an acid monomer and having a number average molecular weight of 2,000-15,000 and (b) 10-60 wt. % of a vinyl polymer (II) having a number average molecular weight of 20,000-500,000.

Abstract: This invention provides a photosetting resin composition suitable as a coating material for optical transmission glass fibers. Owing to the inclusion of a urethane-modified (meth)acrylate and a monoacrylate represented by the following general formula [I]:CH.sub.2 .dbd.CHCO(OC.sub.2 H.sub.4).sub.n OCH.sub.2 CH(C.sub.2 H.sub.5)(CH.sub.2).sub.3 CH.sub.3 [I]wherein n stands for an integer of 1-8, the photosetting resin composition enjoys a high photosetting speed and permits the formation of a coating film of a low modulus of elasticity. Moroever, the modulus of elasticity of the coating film has small temperature dependency at low temperatures. The present invention can hence provide light-transmitting glass fibers having excellent characteristics in optical transmission. The preferred monomer has been identified in the resin parts as 2-ethyl hexoxy ethyl acrylate, and also as 2-(2-ethylhexoxy) ethyl acrylate, and further as 2-[(2-ethylhexyl)oxy]ethyl acrylate.

Abstract: This invention provides a wafer processing film comprising a base film having a Shore D hardness of 40 or less and an adhesive layer disposed on one surface of the base film. In grinding the surfaces of wafers such as silicon and similar wafers, breakage can be prevented by affixing the wafers to the adhesive layer of the processing film and then grinding them.