1
Tsuneo Tsubakimoto, Tadao Shimomura, Yoshio Irie, Yoshihiko Masuda: Absorbent resin composition and process for producing same. Nippon Shokubai Kagaku Kogyo &, Sherman & Shalloway, August 25, 1981: US04286082 (283 worldwide citation)

An absorbent resin composition obtained by copolymerizing in an aqueous solution a mixture of 100 parts by weight of an acrylate salt monomer (B) composed of 0 to 50 mol % of acrylic acid and 50 to 100 mol % of an alkali metal acrylate and 0.001 to 5 part by weight of a crosslinkable monomer (C) hav ...


2
Tsuneo Tsubakimoto, Tadao Shimomura, Yoshio Irie: Absorbent article. Nippon Shokubai Kagaku Kogyo, Sherman and Shalloway, May 19, 1987: US04666983 (215 worldwide citation)

An absorbent article obtained by mixing 100 parts by weight of an absorbent resin powder having a carboxyl group with 0.001 to 10 parts by weight of a crosslinking agent having at least two functional groups capable of reacting with the carboxyl group per molecule and reacting the absorbent resin po ...


3
Tsuneo Tsubakimoto, Tadao Shimomura, Yoshio Irie, Yoshihiko Masuda, Kazumasa Kimura, Takumi Hatsuda: Water absorbing agent. Nippon Shokubai Kagaku Kogyo, Sherman and Shalloway, March 29, 1988: US04734478 (209 worldwide citation)

The invention provides [I] a water-absorbing agent composed of a water-absorbing resin powder having the molecular chains near its surface being crosslinked, said powder being obtained by mixing 100 parts by weight of a powder of a carboxyl-containing water-absorbing resin selected from the group co ...


4
Tsuneo Tsubakimoto, Tadao Shimomura, Yoshio Irie: Method for continuous production of cross-linked polymer. Nippon Shokubai Kagaku Kogyo, Omri M Behr, November 25, 1986: US04625001 (150 worldwide citation)

A method for the continuous production of a cross-linked polymer having a low proportion of large particles, comprising the steps of continuously feeding the aqueous solution of a monomer capable of being converted by aqueous solution polymerization into a water-containing cross-linked gel polymer a ...


5
Kinya Nagasuna, Takashi Namba, Koji Miyake, Kazumasa Kimura, Tadao Shimomura: Production process for water-absorbent resin. Nippon Shokubai Kagaku Kogyo, Armstrong Nikaido Marmelstein Kubovcik & Murray, November 27, 1990: US04973632 (65 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.


6
Kazumasa Kimura, Kinya Nagasuna, Takashi Namba, Kenji Kadonaga, Koji Miyake, Tadao Shimomura: Water-absorbent resin and production process. Nippon Shokubai Kagaku Kabushiki Kaisha, Armstrong Westerman Hattori McLeland & Naughton, September 14, 1993: US05244735 (57 worldwide citation)

Water-absorbent resins having an average particle diameter of 100 to 600 .mu.m and a particle diameter distribution of 0.35 or less are prepared by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing and sieving the gel-like polymer so obtained, and cro ...


7
Nobuyuki Harada, Katsuyuki Wada, Hisanori Obara, Tadao Shimomura, Yoshinori Sano: Water absorbent matter and method for producing it as well as water absorbent and method for producing it. Nippon Shokubai, Armstrong Westerman Hattori McLeland & Naughton, January 17, 1995: US05382610 (53 worldwide citation)

The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by ...


8
Kazuhisa Hitomi, Takumi Hatsuda, Tadao Shimomura: Water-absorbing resin and process for producing same. Nippon Shokubai, Dominik & Stein, April 29, 1997: US05624967 (30 worldwide citation)

A process for producing a water-absorbing resin, which comprises polymerizing (D) an aqueous solution comprising (A) at least one monomer component selected from the group consisting of an unsaturated carboxylic acid and salts thereof; (B) a compound having two or more unsaturated groups in a molecu ...


9
Kazumasa Kimura, Kinya Nagasuna, Takashi Namba, Kenji Kadonaga, Koji Miyake, Tadao Shimomura: Water-absorbent resin and production process. Nippon Shokubai Kagaku Kogyo, Armstrong Nikaido Marmelstein Kubovick & Murray, June 25, 1991: US05026800 (29 worldwide citation)

Water-absorbent resins having an average particle diameter of 100 to 600 .mu.m and a particle diameter distribution of 0.35 or less are prepared by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing and sieving the gel-like polymer so obtained, and cro ...


10
Yoshio Irie, Kaoru Iwasaki, Takumi Hatsuda, Kazumasa Kimura, Nobuyuki Harada, Kunihiko Ishizaki, Tadao Shimomura, Teruaki Fujiwara: Method for production of hydrophilic polymer from hydrated gel polymer. Nippon Shokubai Kagaku Kogyo, Omri M Behr, April 24, 1990: US04920202 (28 worldwide citation)

A method for the production of a hydrophilic polymer having a small residual monomer content from a hydrated gel polymer, which method comprises drying said hydrated gel polymer by contact thereof with a gas containing at least steam and having a dew point in the range of 50.degree. to 100.degree. C ...



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