Elvanol™

Elvanol™ in
Water-Based Adhesives
Its unique properties, such as water solubility combined with hightensile strength and flexibility
make Kuraray Elvanol™ one of themost useful synthetic polymers in
the adhesives industry.
Elvanol™ polyvinyl alcohol is
widely used in▪ industrial adhesives for paper
and paperboard.
▪ general purpose adhesives forbonding paper, textiles, leather,wood, and porous ceramic
surfaces.
Completely hydrolysed grades are
typically used in quick-setting water resistant adhesives including
paper-laminating adhesives forthe production of solid fibreboard,spiral wound tubes, cores anddrums, and laminated specialities.
Elvanol™ may also be utilized asa modifier for adhesives basedon resin emulsions, particularly
polyvinyl acetate.

Water ResistantAdhesives for Paper
Elvanol™ is used extensively inthe preparation of high wetstrength and high tack type ofadhesives for paper. EspeciallyCombinations of Elvanol™ withstarch or clay are very effective
and economical. When high water
resistance and high viscosity isrequired, fully hydrolysed grades
should be selected. Solutions ofthese grades tend to form a gel
structure upon storage, therefore
when extended shelf life of theadhesive is needed, the special
gel-resistant grades Elvanol™ 7515 and Elvanol™ 85-82 should beused. The cold-water insolubilityof Elvanol™ allows the productionof water resistant adhesives.
These adhesives can be used tomanufacture water-resistant solid
fibreboard, laminated paper, andfor the fabrication of paper bags.

Binder Adhesives
Elvanol™-based adhesives are also
ideally suitable as binders for:▪ nonwoven fabrics.
▪ cementitious formulations forconstruction materials.
▪ ceramics.

Remoistenable
Adhesives
Since partially hydrolysed Kuraray
Poval™ grades are more sensitive
to cold water, these grades are thepreferred material to formulate
remoistenable adhesives. The useof Kuraray Poval™ grades leads
to a lower tendency for “curl” inthe coated paper and helps toprevent problems due to blocking
or sticking at high humidity.

Emulsions andDispersions
Kuraray Poval™ polyvinyl alcohol
is used widely as an emulsifier andprotective colloid in the emulsion
polymerization of vinyl acetate
and ethylene/vinyl acetate toform high-solids emulsions withoutstanding stability and excellent adhesive properties. Further
it is highly effective in preparing
stable polystyrene and styrene/butadiene copolymer latices andfor suspension polymerization ofvinyl monomers. Kuraray Poval™
can be used to control particle
size and particle size distribution.
Kuraray Poval™ also retards creaming and settling by acting as a
viscosity builder in the continuousphase.

Adding value toyour products –worldwide
Kuraray Poval™, Exceval™, Elvanol™ and Mowiflex™ are the trademarks for polyvinyl alcohols
made by Kuraray. Their key characteristics — outstanding film-forming properties and high binding strength — add real value to your products. Our polymers are water-soluble, highly reactive,crosslinkable and foamable. They have high pigment binding capacity, protective colloid characteristics and thickening effects. The physical and chemical properties of Kuraray Poval™ makeit ideal for a wide variety of applications, ranging from adhesives through paper and ceramics
to packaging films. Many of our polymers are food contact-approved and thus suitable for foodapplications. Ecologically Kuraray Poval™ is advantageous due to its biodegradability and the factthat combustion does not generate residues. It is available in various particle sizes from granules
to fine powders.
Kuraray produces its wide range of Kuraray Poval™ grades in Japan, Singapore, Germany and theUSA. Kuraray’s global production and service network make us your partner of choice for innovative high-quality PVOH resins.
Kuraray – Here to Innovate.

Headquarters
Kuraray Co., Ltd.
Tokiwabashi Tower
2-6-4, Otemachi
Chiyoda-ku
Tokyo, Japan 100-0004
Phone: +81 3 67 01 1000
infopoval.jp@kuraray.com

Kuraray Poval™
product portfolio
Please contact your local
Kuraray office to discuss theright Kuraray product foryour needs.

Kuraray America, Inc.
2625 Bay Area Blvd.,
Suite 600 Houston, TX77058
United States of America
Phone: +1 800 423 9762

Kuraray Asia Pacific Pte., Ltd.
250 North Bridge Road
#10-01/02 Raffles City Tower
Singapore 179101
Phone: +65 6337 4123

info.kuraray-poval@kuraray.com

infopoval.sg@kuraray.com

Kuraray Europe GmbH
Philipp-Reis-Str. 465795 Hattersheim am Main,
Germany
Phone: +49 69 305 85 351

Kuraray China Co., Ltd.
Unit 2207, 2 Grand Gateway
3 Hongqiao Road, Xuhui District,
Shanghai 200030, China
Phone: +86 21 6119 8111

info.eu-poval@kuraray.com

infopoval.cn@kuraray.com

09_2021