KURARAY POVAL™, EXCEVAL™, ELVANOL™, and MOWIFLEX™ are the trademarks for polyvinyl alcohols (PVOH) 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™ make it 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 food applications. Adding value to your products – worldwide
A new era in PVOH
Kuraray produces its wide range of KURARAY POVAL™ grades in Japan, Singapore, Germany and the USA. Kuraray’s global production and service network make us your partner of choice for innovative high-quality PVOH resins.
A new era in PVOH Kuraray Poval™ – Here to innovate
PLEASE CONTACT US kuraray-poval.com
Kuraray Co., Ltd. Tokiwabashi Tower 2-6-4, Otemachi Chiyoda-ku Tokyo, Japan 100-0004 HEADQUARTERS
Kuraray America, Inc. 3700 Bay Area Blvd., Suite 680 Houston, TX77058 United States of America
Kuraray Asia Pacific Pte., Ltd. 1 North Buona Vista Link #12-10/11, Elementum Singapore 139691
Kuraray Europe GmbH Philipp-Reis-Str. 4 65795 Hattersheim am Main, Germany
Kuraray China Co., Ltd. Unit 2207, 2 Grand Gateway 3 Hongqiao Road, Xuhui District, Shanghai 200030, China
DISCLAIMER KURARAY POVAL™, EXCEVAL™, ELVANOL™, and MOWIFLEX™ are the trademarks or registered trademarks of Kuraray or its affiliated companies. The information, recommendations, and details in this document are provided based on sufficient consideration to the best of Kuraray‘s knowledge. However, they are not intended to guarantee any characteristics beyond the product specifications. Customers should verify the suitability of our products for their intended use and compliance with relevant laws and regulations. Neither Kuraray nor any of its affiliated companies makes any warranty or responsibility for any errors, inaccuracies, or omissions in this document.
01_2025
Dawn of a new era in polyvinyl alcohol Kuraray Poval™
Exceval™ – Kuraray’s water-soluble ethylene vinyl alcohol
Kuraray Poval™ – A champion in versatility
Kuraray is bundling its global polyvinyl alcohol (PVOH) products under the name Kuraray Poval™. Kuraray Poval™ meets all requirements - from low to high viscosity, partially to fully saponified PVOH. The range contains more than 120 products for a wide variety of applications and is supplemented by two speciality ranges: Exceval™ and Mowiflex™. With more than 70 years of
Exceval™
Kuraray Poval™
Exceval™ is the trademark of Kuraray’s halogen-free hydro- phobic polyvinyl alcohol. Although Exceval™ is water-soluble similar to fully hydrolyzed Kuraray Poval™ grades it it absorbs less moisture at ambient temperature compared to our stand- ard polyvinyl alcohol grades. Hence Exceval™ is the polyvinyl alcohol of choice for water resistant emulsions, for D3 and D4 adhesives. Furthermore, Exceval™ produces coatings with excellent gas barrier properties towards oxygen, nitrogen and carbon dioxide, even in humid environments.
The applications of polyvinyl alcohols are wide-ranging: their main uses are in the paper, textile, emulsion, PVC, construc- tion, adhesives, packaging, and oil industries. As flexible, tear-resistant barrier films with a neutral taste, they keep food and other products fresh. In the paper industry they play an important role, as carriers for optical brighteners, in bar- rier coatings against mineral oils/fat, and in paper for inkjet printing. As a component used in the cementation of oil wells Kuraray Poval™ controls fluid loss and the setting time of mortar. It is also used as a temporary binder to facilitate the production of high-strength industrial ceramics. Its solvent resistance en- sures the functionality of protective clothing. Certain Kuraray Poval™ grades have unique properties for the polymerisation of suspension PVC and the manufacture of VAE emulsions. A high polyvinyl alcohol content in the pro- duction of sponges makes them resistant to chemicals and enhances their mechanical stability. The physical and chemi- cal properties of polyvinyl alcohols make them suitable for a wide range of applications. Kuraray Poval™ is water-soluble, has specific colloidal charac- teristics, excellent film-forming properties, and high tensile strength. In addition, it is elastic and resistant to heat and organic solvents. Above all, the range of applications is based on its chemical properties, especially on the ability of its numerous hydroxyl groups to react with substances such as reactant resins, alde- hydes and other reactive compounds.
experience and extensive production and applications expertise, we can tailor the properties of our poly- mers precisely to our customers’ specifications. "Here to Innovate" is therefore both our slogan and our promise to you. Kuraray’s PVOH adds value to your products and brings clear benefits.
Benefits
▪ extensive range of standard products and specialities ▪ competent technical service ▪ global network of production facilities, service laboratories and logistics centers ▪ consistently high product quality ▪ reliable products ▪ investment in the development of new products and applications
Mowiflex™ – Thermoplastic processable polyvinyl alcohol
Kuraray Poval™ – 120 products covering all important applications
HR 3010
100
28-99
32-97 KL
3-98
56-98
6-98
95-88
90
49-88 S2
22-88
18-88
5-88
35-80
80
Selected core range products:
5-74 48-80
70
60
Ultra low saponified
Partially saponified Fully saponified Fine powder grades Low ash Defoamed
Mowiflex™
50
40
Mowiflex™ is Kuraray’s polyvinyl alcohol- based polymer com- pound for thermoplastic processing. This nontoxic resin is water-soluble and forms clear, glossy films. It has high tensile strength and can be processed using conventional thermo- plastic technologies (blown film extrusion, injection molding, 3D printing, etc.). Moreover, Mowiflex™ can be colored, allow- ing processing as a highly concentrated masterbatch.
LM 25
30
0
Specialty Exceval™
100
10
20
30
40
50
60
70
80
90
110
120
130
Viscosity range (mPa•s)
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