Abstract: A recording sheet is provided by forming, on at least one side of a substrate sheet, an ink absorbing layer comprising a cationic polymer having at least crosslinking groups. The ink absorbing layer may comprise (1) a cationic polymer containing a crosslinking monomer (e.g. a monomer having a hydrolyzable condensing group such as alkoxysilyl) as a comonomer unit, (2) a cationic polymer containing a crosslinking monomer and a hydrophilic monomer (e.g. a monomer having a polyoxyalkylene unit) as comonomer units, or (3) the above cationic polymers (1) and (2), and a hydrophilic polymer. The cationic polymer and the hydrophilic polymer may have interacting reactive groups. This recording sheet is useful for the improvement of the water resistance and ink absorption in an ink jet recording sheet.

Abstract: A recording sheet is provided by forming, on at least one side of a substrate sheet, an ink absorbing layer comprising a cationic polymer having at least crosslinking groups. The ink absorbing layer may comprise (1) a cationic polymer containing a crosslinking monomer (e.g. a monomer having a hydrolyzable condensing group such as alkoxysilyl) as a comonomer unit, (2) a cationic polymer containing a crosslinking monomer and a hydrophilic monomer (e.g. a monomer having a polyoxyalkylene unit) as comonomer units, or (3) the above cationic polymers (1) and (2), and a hydrophilic polymer. The cationic polymer and the hydrophilic polymer may have interacting reactive groups. This recording sheet is useful for the improvement of the water resistance and ink absorption in an ink jet recording sheet.

Abstract: A coating composition which is excellent in water resistance, weatherability and durability and can maintain its appearance for a prolonged period of time can be provided. A coating composition comprising a coating component and a photocatalyst containing calcium phosphate and titanium oxide is disclosed. As the photocatalyst, use is made of titanium oxide particles partially covered thereon with calcium phosphate, or porous body coated thereon with a film of titanium oxide, the film of titanium oxide being further covered partially thereon with calcium phosphate. The crystal form of titanium oxide is preferably anatase. The organic coating includes vinyl-type synthetic resin emulsions, and the inorganic coating is e.g. a solution containing a metal alkoxide for forming a film by a sol-gel method.

Abstract: Disclosed is a composition which comprises a phosphatized alicyclic compound represented by the formula (I), (II), (III), (VII) or (IX), shown in the specification.The composition of the present invention is useful as an antigassing agent for a water-based coating composition containing metallic, for example, aluminum powder or flake pigments for coating automobile bodies, etc., a flame retardant for various resins and a water-based ink, and the like.

Abstract: A composition that comprises a phosphatized alicyclic compound represented by the formulas (I), (II), (III), (VII) and (IX) as shown in the specification is described.

Abstract: A novel lactone-modified polyvinyl acetal resin and a novel carboxyl-modified resin thereof are disclosed. The novel resins of the present invention can be used as a polyol resin for coatings curable at ordinary temperatures or heating, adhesives, binders, a processing agent for fibers, a curable resin composition by mixing with a curing agent which can react to hydroxyl groups, and a composition for a magnetic recording medium, etc. The novel resins of the present invention have graft chains containing primary hydroxyl groups bonded to the ester group derived from a lactone compound, or the primary hydroxyl groups and carboxylic groups.

Abstract: Disclosed are a carbonate group-modified epoxy resin in which carbonate groups are introduced into an epoxy resin having secondary hydroxyl groups at terminals or lactone-modified epoxy resin having primary hydroxyl groups at terminals by the ring-opening reaction of a cyclic alkylene carbonate, a process for the preparation thereof, and a thermosetting resin composition containing the carbonate group-modified epoxy resin.

Abstract: Disclosed are a novel lactone-modified diketene (meth)acrylate compound having an active methylene group in the molecule and a process for the preparation thereof. The novel lactone-modified diketene (meth)acrylate compound of the present invention can be preferably used as resins for coatings, adhesives, inks, photosensitive materials for photographs, dispersants for pigments, agents for processing fibers, and modifiers for rubbers. Furthermore, disclosed is a novel (co)polymer which comprises the novel lactone-modified diketene (meth)acrylate compound and, optionally, a polymerizable monomer having an ethylenically unsaturated double bond. Still further, disclosed is a curable composition which comprises a lactone-modified diketene (meth)acrylate compound and at least one selected from the group consisting of a melamine, an isocyanate, and aldehyde, and an amine.

Abstract: Disclosed are a lactone-modified polyvinyl alcohol and a process for the preparation thereof, a polymer composition, a permanently anti-electrostatic resin composition, a lactone-modified resin having hydroxyl groups, and a process for the preparation thereof. The lactone-modified polyvinyl alcohol can be used in wide fields owing to the capability of freely adjusting the water solubility, such as water-soluble, gradually water-soluble, low water-soluble, and water-insoluble by a degree modified by lactone compounds, and owing to possessing properties both of PVA and lactones. Furthermore, the lactone-modified polyvinyl alcohol has properties such as being plasticizers or softening agents, and as a result, there can be provided a polymer composition having excellent properties by mixing with a hydrophilic polymer or polar polymer.

Abstract: A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Abstract: A novel acrylic monomer is produced by addition reacting a hydroxyalkyl (meth)acrylate or its lactone adduct with a cyclic alkylene carbonate, and then acylating the terminal hydroxyl group of the reaction product with a reactive derivative of a monobasic alkanoic acid or a dicarboxylic acid anhydride.

Abstract: Disclosed are a novel lactone-modified diketene (meth)acrylate compound having an active methylene group in the molecule and a process for the preparation thereof.The novel lactone-modified diketene(meth)acrylate compound of the present invention can be preferably used as resins for coatings, adhesives, inks, photosensitive materials for photographs, dispersants for pigments, agents for processing fibers, and modifiers for rubbers.Furthermore, disclosed is a novel (co)polymer which comprises the novel lactone-modified diketene(meth)acrylate compound and, optionally, a polymerizable monomer having an ethylenically unsaturated double bond.Still further, disclosed is a curable composition which comprises a lactone-modified diketene(meth)acrylate compound and at least one selected from the group consisting of a melamine, an isocyanate, and aldehyde, and an amine.

Abstract: Disclosed are a lactone-modified polyvinyl alcohol and a process for the preparation thereof, a polymer composition, a permanently anti-electrostatic resin composition, a lactone-modified resin having hydroxyl groups, and a process for the preparation thereof.The lactone-modified polyvinyl alcohol can be used in wide fields owing to capability of freely adjusting a water solubility such as water-soluble, gradually water-soluble, low water-soluble, and water-insoluble by a degree modified by lactone compounds, and owing to possessing both properties in PVA and lactones.Furthermore, the lactone-modified polyvinyl alcohol has a property as plasticizers or softening agents, as a result, there can be provided a polymer composition having an excellent property by mixing with hydrophilic polymer or polar polymer.

Abstract: A novel lactone-modified polyvinyl acetal resin and a novel carboxyl-modified resin thereof are disclosed.The novel resins of the present invention can be used as a polyol resin for coatings curable at ordinary temperatures or heating, adhesives, binders, a processing agent for fibers, a curable resin composition by mixing with a curing agent which can react to hydroxyl groups, and a composition for a magnetic recording medium, etc.The novel resins of the present invention have graft chains containing primary hydroxyl groups bonded to the ester group derived from a lactone compound, or the primary hydroxyl groups and carboxylic groups.

Abstract: The present invention provides a composition represented by the formula ##STR1## (wherein x is an integer of 3 to 7, y is an integer of 0 to 50, and R.sub.a and R.sub.b are H, methyl group, or propyl group and each of the R.sub.a and R.sub.b groups may be replaced with any of the other groups simultaneously) and useful as a raw material or modifier for resins for use in coating compositions, adhesives, epoxy resins, and the like, and further provides a process for producing a composition comprising compounds represented by the above formula (I) which process is characterized in that a compound represented by the formula ##STR2## is reacted with a lactone at 30.degree. to 20.degree. C. or compounds represented by the formula ##STR3## (wherein x, y, R.sub.a, and R.sub.b have the meanings as defined above) are epoxidized at 0.degree. to 80.degree. C. using a peroxide.

Abstract: Disclosed are a carbonate group-modified epoxy resin in which carbonate groups are introduced into an epoxy resin having secondary hydroxyl groups at terminals or lactone-modified epoxy resin having primary hydroxyl groups at terminals by the ring-opening reaction of a cyclic alkylene carbonate, a process for the preparation thereof, and a thermosetting resin composition containing the carbonate group-modified epoxy resin.

Abstract: An aluminum pigment which comprises aluminum flakes wherein the surfaces of the flakes are coated with a film of molybdic acid in an amount of from 0.1 to 10% by weight in terms of Mo metal based on the weight of aluminum, and a phosphoric ester resulting from an esterification reaction of a multifunctional epoxy compound with a phosphoric compound is adsorbed to said film in an amount of from 0.05 to 5% by weight in terms of P element based on the weight of aluminum. The aluminum pigment is excellent in paint stability as well as color tone, adhesion and moisture resistance of paint films.

Abstract: A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Abstract: Disclosed is a composition which comprises a phosphatized alicyclic compound represented by the formula (I), (II), (III), (VII) or (IX) shown in the specification.The composition of the present invention is useful as an antigassing agent for a water-based coating composition containing metallic, for example, aluminum powder, or flake pigments for coating automobile bodies, etc., a flame retardant for various resins, and a water-based ink, and the like.

Abstract: Disclosed are a novel lactone-modified diketene (meth) acrylate compound having an active methylene group in the molecule and a process for the preparation thereof.