1
Ikeuchi Hiroyuki, Harada Nobuyuki, Masuda Yoshihiko: Water-absorbing agent and process for producing the same. Nippon Catalytic Chem, April 24, 2002: EP1199327-A2 (75 worldwide citation)

The present invention provides: a process for producing a water-absorbing agent at low temperature in a short time, wherein the water-absorbing agent has excellent balance between the absorption capacity without load and the absorption capacity under a load, high fluidity under a hygroscopic atmosph ...


2
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 ...


3
Yano Kazutaka, Kajikawa Katsuhiro, Nagasuna Kinya, Irie Yoshio: Method for the production of absorbent resin.. Nippon Catalytic Chem, September 8, 1993: EP0559476-A1 (67 worldwide citation)

An absorbent resin exhibiting a high absorption ratio, having only a small water-soluble component content, and have excellent gel stability to withstand the effect of aging is produced. The production of the absorbent resin comprises a step of polymerizing a water-soluble monoethylenically unsatura ...


4
Yoneda Tadahiro, Nakahara Saburo, Takeda Mitsuo, Kamo Midori: Monodispersed glycol suspension of fine inorganic oxide particles having excellent dispersion stability and method of improving the slipperiness of polyester film using the monodispersed suspension.. Nippon Catalytic Chem, September 16, 1987: EP0236945-A2 (64 worldwide citation)

A monodispersed glycol suspension having excellent dispersion stability, comprising a monodispersed suspension in a glycol of spherical fine particles of an amorphous inorganic oxide having an average particle diameter of 0.05 to 5 micrometers and a relative particle size standard deviation of l.0 t ...


5
Yano Kazutaka, Irie Yoshio: Process for producing water-absorbent resin.. Nippon Catalytic Chem, June 23, 1993: EP0547847-A1 (61 worldwide citation)

A water-absorbent resin having high absorption capacity and a slight amount of water-soluble ingredients is produced by a process, which comprises polymerizing a water-soluble monoethylenic unsaturated monomer in the presence of a crosslinking agent, and using a bifunctional compound represented by ...


6
Hatsuda Takumi, Kimura Kazumasa, Nagauna Kinya, Yano Akito: Method for production of fluid stable aggregate.. Nippon Catalytic Chem, October 9, 1991: EP0450922-A2 (61 worldwide citation)

A method for the production of a fluid stable aggregate, which comprises mixing (A) 100 parts by weight of an absorbent resin powder possessing a carboxyl group, (B) 0.01 to 30 parts by weight of a cross-linking agent, and (C) 0 to 50 parts by weight of water, and (D) 0 to 60 parts by weight of a hy ...


7
Irie Yoshio, Harada Nobuyuki, Nagasuna Kinya, Hirota Kohichi, Masuda Yoshihiko, Nagano Hideaki, Kubo Hideyuki: Process for preparing absorbent resin.. Nippon Catalytic Chem, January 4, 1995: EP0632068-A1 (60 worldwide citation)

A process for preparing an absorbent resin includes the steps of: preparing a first crosslinking agent (A) including at least two polymerizable unsaturated bonds; preparing a second crosslinking agent (B) including at least two polymerizable unsaturated bonds and hydroxyl groups; preparing a crossli ...


8
Fujino Shinichi, Nakamura Masatoshi, Nagasuna Kinya: Crosslinking a water-absorbing agent. Nippon Catalytic Chem, August 25, 1999: EP0937736-A2 (55 worldwide citation)

The invention provides a process for producing a water-absorbing agent by using a crosslinking agent of high molecular weight, wherein the water-absorbing agent is excellent with good balance in respect to the absorption capacities under no load and under a heavy load and can display excellent absor ...


9
Hatsuda Takumi, Kimura Kazumasa, Nagasuna Kinya, Yano Akito: Method of treating the surface of an absorbent resin.. Nippon Catalytic Chem, October 9, 1991: EP0450923-A2 (55 worldwide citation)

A method of treating the surface of an absorbent resin, which comprises mixing (A) 100 parts by weight of an absorbent resin powder possessing a carboxyl group, (B) 0.01 to 30 parts by weight of a cross-linking agent, (C) 0 to 50 parts by weight of water, and (D) 0 to 60 parts by weight of a hydroph ...


10
Nagasuna Kinya, Kadonaga Kengi, Kimura Kazumasa, Shimomura Tadao: Method of surface-treating water-absorbent resin.. Nippon Catalytic Chem, May 24, 1989: EP0317106-A2 (50 worldwide citation)

A method of treating the surface of a water-absorbent resin is disclosed which comprises adding a hydrophilic crosslinking agent capable of reacting with at least two functional groups of the water-absorbent resin in a hydrophobic organic solvent to crosslink resin at or near its surface. The hydrop ...