Kuraray Co., Ltd.

Rengo Co., Ltd.

Kuraray Co., Ldt.

Hiroji Kohno

Takuji Okaya

Junnosuke Yamauchi

Takatoshi Koyakumaru

Kinichi Shirakawa

Hiroyuki Onishi

Masateru Tokuno

Toshiaki Sato

Hitoshi Maruyama

Isao Ono

Kohji Moritani

Masateru Tokumo

A process for production of corrugated board using an aqueous adhesive which contains polyvinyl alcohol and clay, or polyvinyl alcohol, clay and water-soluble boron compound, the ratio of clay to polyvinyl alcohol being in the range of 200 to 600 parts by weight based on 100 parts by weight of polyvinyl alcohol, the ratio of water-soluble boron compound being not more than 15 parts by weight based on 100 parts by weight of polyvinyl alcohol, the solid content of the adhesive being 25 to 60% by weight characterized in that

Adhesives useful for production of corrugated board

Disclosed herein is a highly compatible polymer composition which comprises (A) starch, (B) vinyl alcohol polymer having an alkyl group of 4 to 50 carbon atoms at the terminal, and/or (C) polyvinyl alcohol. Disclosed also herein is a textile sizing agent having outstanding weavability which comprises (A) starch, (B) vinyl alcohol polymer having an alkyl group of 4 to 50 carbo atoms at the terminal, (C) polyvinyl alcohol, and (D) oil for textile sizing.

Polymer composition and textile sizing agent made therefrom

Production process and adhesives for corrugated board

This invention relates to a water resistant composition which comprises (A) polyvinyl alcohol, (B) a chitosan of which aqueous 1% solution has a viscosity not greater than 70 centipoise at 20.degree. C. and (C) an aldehyde compound, as well as a heat-sensitive recording sheet which comprises said composition. The composition has excellent water resistant properties and the heat-sensitive recording sheet has improved color forming properties and excellent resistance to water and solvents.

Water resistant composition and heat-sensitive recording sheet

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Kurashiki, Japan

Hiroji Kohno