Mitsubishi Plastics, Inc.

Dai-ichi Kogyo Seiyaku Co., Ltd.

Osamu Kakishita

Takeshi Fujita

Katsuaki Matsuo

Jun Nishioka

Shigeki Nishimura

Kazuo Kuzukawa

Plate making film, plate making ink, plate making method using the film, and plate making system using the film

An object of the present invention is to provide a water-absorptive material having a satisfactory water-absorptivity in an ion-exchanged water as well as an ionic aqueous solution and also having a satisfactory thermoplastic moldability, and also to provide a water-absorptive molded product having an excellent fabricability including heat-sealability. Thus, the present invention provides a water-absorptive material crosslinked by irradiation with an ionizing radiation or ultraviolet rays, which comprises a hydrophilic high molecular compound having a weight average molecular weight of at least 10,000 obtained by reaction of (i) a polyalkylene oxide compound having an organic compound containing two active hydrogen groups addition-polymerized with an alkylene oxide comprising ethylene oxide as the main component and (ii) a polycarboxylic acid, a polycarboxylic acid anhydride, a lower alkyl ester of polycarboxylic acid or a diisocyanate.

Water-absorptive material and method of producing water-absorptive

A water-soluble composite film including a special film mainly made of water soluble high molecular compound composed of a specific repetitive unit and a polyvinyl alcohol resin film layered thereon to be laminated. This composite film can be used as a packaging material for chemicals and the like with the above special film inside. Thus, this water soluble composite film can be employed as a unit package material for bactericide, insecticide, dyestuff, pesticide and the like, or as a packaging material for disposable commodities of laundry bags, sanitary napkins and the like.

Water soluble composite film

Growing community of inventors

Nagahama, Japan

Osamu Kakishita