Abstract: A sandwich glass having an intermediate layer formed of a photosensitive resin consisting mainly of an acryloyloxy group- or methacryloyloxy group-containing high polymer and at least one of acrylic acid, methacrylic acid and acryloyloxy group- or methacryloyloxy group-containing compound is excellent in the adhesion between the intermediate layer and the glass plates and has high impact absorbing ability, light resistance and heat resistance.

Abstract: A composite composed of vulcanized rubber and thermoplastic resin which adheres tightly to the rubber can be obtained by treating the surface of the vulcanized rubber with at least one of halogen, halogen generating compound and halogenoid, and bonding melted polyamide resin, polyester resin, styrene series resin or acrylic resin to the above treated rubber surface region by the injection or extrusion molding.

Abstract: A vulcanized rubber composition containing at least 30% by weight, based on the amount of the rubber component, of syndiotactic-1,2-polybutadiene has a high adhesion, and can be easily and firmly adhered to another vulcanized rubber composition or to a porous material through a syndiotactic-1,2-polybutadiene thin film by a hot-melt adhesion process.

Abstract: An adhesive composition which shows improved stickiness and adhesive property at room temperature and exhibits an excellent adhering ability in a short time is prepared by compounding(a) an acrylonitrile-containing copolymer having carbon-to-carbon double bond(b) a phenol-polysulfide resin(c) a metal oxide, and(d) a polyfunctional electrophilic reactive compound containing at least two electrophilic reactive groups.

Abstract: A hardness tester has an image sensor and a detecting system. The image sensor has aligned plurality photoelectric sensor elements on an image plane on which a bright and dark image of an indentation is formed through an optical system. The detecting system detects the diagonal length of the indentation by using the differences in amplitude of the output signals developed by the sensor elements in the vicinity of the ends of the indentation image.

Abstract: A novel functional high polymeric substance having .alpha.,.beta.-unsaturated carboxylate group, which is obtained by reacting a liquid high polymeric substance containing carbon-to-carbon unsaturated double bond or a solution of said high polymeric substance with .alpha.,.beta.-unsaturated carboxylic acid and its derivative in the presence of pseudo halogen compound. A rubber composition suitable for sealant is obtained by compounding said functional high polymeric substance with a plasticizer and/or a filler.

Abstract: A viscous rubber composition consisting mainly of a non-polar rubber, polybutene and white carbon has high adhesion and excellent puncture-sealing properties. Pneumatic tires provided with a puncture-sealing layer formed of such a viscous rubber composition have a high resistance against the puncture due to foreign substances penetrated through the tire.

Abstract: A high polymeric substance having isocyanate group is produced by reacting a liquid high polymeric substance containing carbon-to-carbon unsaturated double bond or a solution of said high polymeric substance with a cyanate, an alkyl hypohalite and an organic carboxylic acid.

Abstract: An ion exchanger is produced by reacting a substance containing carbon-to-carbon unsaturated double bond with a solution of iodine isocyanate in an organic solvent and then reacting the resulting isocyanate group added to said substance with a compound having the following formula(X).sub.n R(Y).sub.m or XYwherein X represents an addition active group to the isocyanate group, Y represents an ion-exchanging group or a chelating group, R represents an organic radical having any valence of from 2 to 6 and a molecular weight of 20 to 1000, and n and m are selected from integers of 1 to 5, respectively, provided that a sum of n and m is equal to the valence of R, to introduce the ion-exchanging group having ion-exchanging properties into said substance.

Abstract: A method for improving the adhering ability of a vulcanized rubber surface by treating said surface with a solution of iodine isocyanate or a mixed solution of iodine isocyanate and iodine to provide a high adhering ability to said surface.The thus treated vulcanized rubber surface can be adhered strongly to other vulcanized rubber or the other various materials by contacting these materials tightly using an adhesive or without using an adhesive.