Abstract: An anti-AIDS virus agent is disclosed, which is characterized in that it contains the 2',3'-dideoxypurinenucleosides represented by the chemical formula (I): ##STR1## as an effective ingredient.

Abstract: An ink fusion transfer paper having a recording layer comprising at least one layer on a support, this paper being characterized in that the uppermost layer of the recording layer consist of at least 100 parts by weight of a pigment and 10-50 parts by weight of a binder, the layer being applied to one or both sides of the support at a rate of 5-50 g/m, per side in terms of dry solids, 30-100 weight percent of the aforesaid pigment consist of a synthetic silica having a specific surface of 20-600 m.sup.2 /g, and the 75 degree gloss of the aforesaid uppermost layer of the paper is no less than 50%.

Abstract: An ink jet recording paper having a support provided on at least one surface with a pigment-containing coating in accordance with a cast coating method, with said pigment comprising at least 50 weight percent of a calcium carbonate-compounded silica, whereby achieving excellent ink absorption, smoothness, gloss and water resistance together with an excellent dot density, sharpness and roundness to ensure recording of high quality, high contrast full color images.

Abstract: A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20.degree. C.

Abstract: (Objective) In a color-proof material performed by forming multi-color image on an arbitrary material (ultimate image-receiving material) such as paper using a photosensitive transfer sheet and an intermediate image-receiving sheet, the objective is to bring the quality close to the printed quality formed with inks alone.(Constitution) For the photosensitive sheet, the colored photosensitive layer is formed with a material comprising a synthetic resin emulsion with Tg=-20.degree. to 40.degree. C. such as acrylic ester or ethylene-vinyl acetate copolymer so that the image layer itself has heat-adhesivity. Moreover, the image-receiving layer of the intermediate image-receiving sheet is formed with a material containing a resin cross-linked copolymer of olefin and .alpha., .beta.-unsaturated carboxylic acid with metallic ions and a resin comprising a copolymer of ethylene and vinyl acetate in a proportion by weight of 100/0 to 10/90.

Abstract: A positive type photosensitive composition developable with water or warm water alone of water-soluble photocrosslinking agent, water-soluble resin and synthetic resin emulsion and further a coloring agent, if necessary.

Abstract: Development of medicament having anti-virus activity, particularly anti-HIV (anti-human immunodeficiency virus) activity. An anti-virus agent comprising bis-naphthalenedisulfonic acids having aliphatic spacer represented by the formula (1) and their physically usable salts.

Abstract: Novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2,2-bis (hydroxyphenyl)propaneformaldehyde condensates, and methods for their production are disclosed. The novel condensates are useful as a dispersant for disperse dyes, an additive for carbonaceous fine powder-water slurries and as a water reducing agent for cement.

Abstract: An antiviral medicinal composition having spent liquor from kraft pulping and/or processed products thereof (kraft lignin, sulfomethylated and/or sulfopropylated kraft lignin) as major constituents, are effective agents in therapeutic and/or preventive methods against AIDS.

Abstract: A feed composition for fish breeding with an improved preference for fish comprises from 0.03 to 1% by weight of each of 5'-guanylic acid, 5'-cytidylic acid, 5'-uridylic acid and 5'-adenylic acid or 5'-inosinic acid, all of which are hydrolyzates of ribonucleic acid, or a yeast extract containing a large amount of the foregoing 5'-nucleotides and oligopeptide.

Abstract: A method of producing solvent-soluble chlorinated polyolefin as resin for paint, ink, adhesion and film-forming uses comprising suspending polyolefin powder finely pulverized to a specific surface area of 300 to 20,000 cm.sup.2 /g into aqueous medium and conducting chlorination.

Abstract: Postcards and reply postcards for confidential purposes of a structure in combination comprising an S- or Z-folding, continuous postcard form having on at least one major side a first region to bear an address and second regions to bear confidential information, one of said second regions being folded back onto the back side of said first region along a line and the other of said second regions being folded back onto said one region along a line on the middle portion of and between said second regions and a Z-folding continuous postcard form is designed for mailing information and a third region being folded back onto said one region along a folding line is designed for a reply, and such postcard form is prepared in a continual form so as to be printed both addresses of the addressees and items of his confidential information at the same time by a printer connected to a computer thereby to ensure the right entry of information and a third region, if any, being printed the addresses and names of addressors and

Abstract: A production method of novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2, 2-bis(4-hydrocyphenyl)propaneformaldehyde type condensate and said condensate itself are disclosed. Uses of condensates as a dispersant for disperse dye, additive for carbonaceous fine powder-water slurry and water-reducing agent for cement are also claimed.

Abstract: A method of producing organic solvent-soluble chlorinated rubber is disclosed, which is characterized in that, in the method of chlorinating rubber latex with chlorine gas up to 60 to 75% chlorine content in the aqueous medium as it is,(A) nonionic or cationic surfactant is added to rubber latex prior to chlorination and then acid is added to perform the acidifying treatment of latex,(B) rubber latex is chlorinated up to at least not less than 30% chlorine content at a temperature of not higher than 50.degree. C. blocking off the light in the first step of chlorination, and(C) remaining chlorination is performed while irradiating ultraviolet rays in the second step of chlorination. The chlorinated product is also claimed.

Abstract: The invention relates to a method for producing solvent-soluble chlorinated ethylene-vinyl acetate copolymer by conducting homogeneous chlorination of ethylene-vinyl acetate copolymer in aqueous suspension by irradiation or by organic or inorganic radical generation, which method comprises conducting the chlorination upon a powder of ethylene-vinyl acetate copolymer containing 5 to 35 wt % of vinyl acetate and having a specific surface area of not less than 300 cm.sup.2 /g at a reaction temperature dependent upon the content of vinyl acetate as expressed in the relationship:20.ltoreq.[reaction temperature (.degree. C.)].ltoreq.60-[vinyl acetate content (wt. %)].

Abstract: An epoxy resin having the formula: ##STR1## wherein R is a hydrogen atom or a methyl group, and n is an integer of from 0 to 15, and wherein the resin has an epoxy equivalent in the range of 320-345 g/eq.

Abstract: A developing machine for photosensitive films serviceable for both negative type and positive type films and exclusively usable for developing with water, comprising a warm water-dipping section consisting of warm water bath, a brush-developing section for developing by rubbing off the non-image area with a rotating brush roll while spraying water, and a drying section for drying with warm air, wherein the negative type photosensitive film, and non-image area being dissolved with ordinary temperature water for development, is passed through the brush-developing section and drying section, and the positive type photosensitive film, the non-image area being swollen with warm water and then rubbed off with brush for development, is passed through the warm water-dipping section, brush-developing section and drying section.

Abstract: An improvement in a multicolor image-forming method and a multicolor image-forming material applied to the same, employing a heat transfer photosensitive material comprising a transparent substrate, a colored layer which is soluble in water but insolubilizable by light, and a heat-fusible and bondable intermediate layer therebetween.

Abstract: Method of forming a positive-positive type image is disclosed, which is characterized in that a photosensitive layer is formed on a substrate using a composition comprising water-soluble photo-crosslinking agent, water-soluble resin and synthetic resin emulsion and further coloring agent, if necessary, said photosensitive layer is exposed to active rays through manuscript, then this is immersed into warm water of 30.degree. to 60.degree. C. for not less than 3 seconds to allow the exposed area to swell and soften sufficiently with warm water and simultaneously to allow almost all water-soluble photo-crosslinking agent in the nonexposed area to dissolve out into warm water, and successively the swollen and softened exposed area is rubbed out to form an image having no coloring originating from water-soluble photo-crosslinking agent without using the development chemicals except water.

Abstract: 2', 3'-Dideoxy purine nucleosides represented by following general formulae [I] and/or [II] ##STR1## (wherein X and Y indicate nitrogen atoms or carbon atoms and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 indicate each independently any of hydrogen atom, hydroxyl group, amino group, alkyl group, halogen atom, alkoxy group and mercapto group), process for the preparation thereof and applications thereof to the antiviral agent, antiretroviral agent, therapeutic drug and preventive drug for acquired immunodeficiency syndrome (AIDS), and experimental medicine and experimental reagent to be used in genetic engineering are claimed.