Daicel Chemical Industries, Ltd.

Other

Agency of Industrial Science and Technology

Daicel Chemical Ind., Ltd.

Takaaki Fujiwa

Hidetaka Kojima

Hiroshi Taoda

Toru Nonami

Akihiro Izuka

Kiyoharu Mizumoto

Kiyotaka Inokami

Masahiro Kagotani

Ken-ichi Kawai

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.

Recording sheet with an ink absorbing layer

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.

Photocatalyst-containing coating composition

Acetic acid is advantageously prepared from a starting material having a formic acid moiety and a methyl ester moiety by heating said starting material in the presence of (1) carbon monoxide, (2) at least one of (2-a) a metal accelerator selected from beryllium, a metal belonging to the group IIIA, IVB, VB, VIB or IIA of the Periodic Table, a lanthanide metal and an actinide metal and (2-b) an onium compound or a precursor for the onium compound, (3) a rhodium catalyst and (4) an iodine compound.

Process for preparing acetic acid

A process is provided for producing an O-acetyl compound by carbonylating an O-methyl compound with carbon monoxide in the presence of a rhodium catalyst and an iodine compound, comprising

Production of acetyl compound

This invention provides a process for producing an oxy-acetyl compound by carbonylating an oxy-methyl compound with carbon monoxide in the presence of a rhodium catalyst, an iodine compound, and a metallic accelerator, and also in the presence of at least one compound selected from the group consisting of boron compounds, bismuth compounds, and tertiary amide compounds in the reaction system. When at least one of the bismuth or boron compound is present in the reaction system, the carbonylation reaction can proceed without precipitation of any metallic accelerator.

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Himeji, Japan

Takaaki Fujiwa