1
Kimura Kazumasa, Nagasuna Kinya, Namba Takashi, Kadonaga Kenji, Miyake Koji, Shimomura Tadao: Water-absorbent resin and production process.. Nippon Catalytic Chem, January 3, 1990: EP0349240-A2 (73 worldwide citation)

This invention relates to a water-absorbent resin of new, novel type obtained from polymerization of a water-soluble ethylenically unsaturated monomer followed by surface treatment and, in addition, a process for producing this resin. The water-absorbent resin in this invention has average particle ...


2
Hatsuda Takumi, Namba Takashi, Motono Yoshihiro: Production process of water-absorbent resin. Nippon Catalytic Chem, June 16, 1999: EP0922717-A1 (39 worldwide citation)

The invention provides a production process of a water-absorbent resin, by which process the polymerization temperature can be controlled in static aqueous solution polymerization. The production process of a water-absorbent resin comprises the step of polymerizing statically an aqueous solution wit ...


3
Nagasuna Kinya, Namba Takashi, Miyake Koji, Kimura Kazumasa, Shimomura Tadao: Water-absorbent resin and production process.. Nippon Catalytic Chem, January 3, 1990: EP0349241-A2 (24 worldwide citation)

This invention relates to a water-absorbent resin of a new, novel type obtained from polymerization of water-soluble ethylenically unsaturated monomer and a process for producing this resin. The water-absorbent resin in this invention has average particle diameter in a specially defined range and a ...


4
Kelland Malcolm A, Namba Takashi, Tomita Takashi: A method for inhibiting gas hydrate formation using polymeric amides of molecular mass less than 1000. Rf Procom, Nippon Catalytic Chem, November 15, 2000: GB2349889-A (5 worldwide citation)

A method is provided for inhibiting the formation, agglomeration and plugging of gas hydrates in a fluid containing hydrate forming constituents. The method is particularly useful in the oil and gas industry in drilling, production and well stream transportation. The method involves adding to the hy ...


5
Itoh Hiroshi, Namba Takashi, Kobayashi Hiroya, Yukitake Masashi: Process for producing polyester by ring-opening copolymerization.. Nippon Catalytic Chem, November 2, 1994: EP0622390-A2 (4 worldwide citation)

This invention provides a process for producing with industrially good efficiency a polyester having a high melting point and biodegradability. In this process, ring-opening copolymerization of a cyclic acid anhydride containing succinic anhydride as a main component with a cyclic ether containing e ...


6
Namba Takashi, Kobayashi Hiroya, Minami Kenji, Itoh Hiroshi, Kuriyama Toshiaki, Yukitake Masashi: High-molecular-weight polydioxolane and process for producing the same.. Nippon Catalytic Chem, October 4, 1995: EP0675146-A1 (3 worldwide citation)

A process for producing a high-molecular-weight polydioxolane which comprises the steps of polymerizing 1,3-dioxolane in the presence of a polymerization catalyst containing a heteropolyacid and neutralizing the obtained reaction product with an organic amine and/or ammonia. A hydrophilic film which ...


7
Ohmori Mamoru Uchiyama Manufac, Namba Takashi Uchiyama Manufac, Horichi Tsukasa Uchiyama Manuf, Tomoda Masayasu Daikin Industr, Noguchi Tsuyoshi Daikin Indust, Matsumoto Kazuhisa Daikin Indu, Minamino Etsuo Daikin Industri: Gasket for automotive engine transmission.. Daikin, Uchiyama Mfg, April 20, 1994: EP0592691-A1 (2 worldwide citation)

A gasket for automotive engine transmission, made from a cross-linking composition comprising 100 parts by weight of a polymer prepared by dissolving or swelling a noncrystalline fluoropolymer in an acrylic monomer and polymerizing the monomer, 0.1 to 100 parts by weight of a filler, and 0.1 to 10 p ...


8
Itaya Nobushige, Wakita Ryuhei, Kubo Asako, Sasaki Mikio, Namba Takashi, Yukimoto Yusuke: Process for producing 2-fluorocyclopropanecarboxylic acid. Sumitomo Chemical Co, Daiichi Seiyaku Co, August 14, 1996: EP0726244-A1 (2 worldwide citation)

A process for producing a 2-fluorocyclopropanecarboxylic acid of formula ÄIÜ wherein R is hydrogen or lower alkyl, comprises reducing a 2-halo-2-fluorocyclopropanecarboxylic acid of formula ÄIIÜ wherein R is as defined above and X is a halogen, by (i) developing a Raney nickel alloy in the presence ...


9
Shioji Shorbu, Gomi Tomoki, Namba Takashi: Use of a crosslinked copolymer for adsorbing surfactant in solution. Nippon Catalytic Chem, October 8, 1997: EP0799640-A1 (1 worldwide citation)

Inexpensive absorbing agent and method for readily and satisfactorily collecting and removing a surfactant from a solution, such as a surfactant-containing liquid waste, are provided. The absorbing agent includes, for example, a crosslinked polymer having a polyoxyalkylene chain. The surfactant is a ...


10
Kelland Malcolm A, Rodger P Mark, Namba Takashi: Composition for controlling clathrate hydrates and a method for controlling clathrate hydrate formation. Rf Procom, Nippon Catalytic Chem, March 8, 2000: GB2341188-A

Composition for controlling the formation, growth and/or agglomeration of clathrate hydrates, which comprises a Polymer A containing the repeating structural unit (1), wherein P1 is an atom on a macromolecular main chain; A1 is a direct bond or a spacer group, and R1 and R2 are selected from hydroge ...