Kuraray Co., Ltd.

Yoriko Imaoka

Tatsuya Tanida

Keisuke Morikawa

Masaki Kato

Michael Collins

Masato Nakamae

Ghebrehiwet Ghebremeskel

Yuta Taoka

An aqueous emulsion may include an ethylene-vinyl alcohol copolymer (A) as a dispersant and a polymer (B) which contains an ethylenically unsaturated monomer unit as a dispersoid, wherein the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content of 1 mol % or more and less than 20 mol %; and a crystallinity in water at 30° C. (Cw (30° C.)) and a crystallinity in water at 70° C. (Cw (70° C.)) as determined by pulse NMR satisfying formula (I). Such aqueous emulsions can form fewer aggregates and exhibit excellent water-resistant adhesiveness and excellent film formability.

Aqueous emulsion and adhesive using same

A water-based adhesive suitable for a paper straw may include: an ethylene-vinyl alcohol copolymer (A); and water. The ethylene-vinyl alcohol copolymer (A) may have an ethylene units content of 1 mol % or more and less than 20 mol %. A block character of the ethylene units may be from 0.90 to 0.99.

Water-based adhesive for paper straw, and paper straw in which same is used

An aqueous emulsion may include: an ethylene-vinyl alcohol copolymer (A) as a dispersant; and a polymer (B) containing an unsaturated ethylenic monomer unit as a dispersoid, wherein the ethylene-vinyl alcohol copolymer (A) has a content of ethylene units of 1 mol % or more and less than 20 mol % and a block character of the ethylene units from 0.90 to 0.99. The aqueous emulsion may contain the ethylene-vinyl alcohol copolymer (A), as a dispersant, having a specific structure and is thus excellent in storage stability at low temperatures and water-resistant adhesiveness.

The present invention relates generally to a polyvinyl alcohol composition having higher amorphous polyvinyl alcohol polymer content and various end uses thereof.

Particulate polyvinyl alcohol, process for making and uses of the same

The present invention relates generally to a polyvinyl alcohol composition having higher amorphous polyvinyl alcohol polymer content, a process for making such a polyvinyl alcohol composition, and various end uses thereof.

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Kurashiki, Japan

Yoriko Imaoka