Unlimited
Possibilities with
Polyvinyl AlcoholElvanol™ 90-50

Elvanol™ 85-82

Elvanol™ 90-50 is a fully hydrolyzed polyvinyl alcohol (PVOH)
designed to provide high film
strength and binding power in
relatively low viscosity systems.

Elvanol™ 85-82 is a unique,medium viscosity copolymer
polyvinyl alcohol.

Advantages:

1. Less tendency to increase inviscosity during storage, evenbelow room temperature and at
higher solids concentrations.
2. More resistant to temperaturechanges.
3. High film strength.
4. Oil, grease and solvent resistance.
5. Suitable to be used for compounded adhesives.

1. Permits higher solids solutions at a given viscosity andtemperature, or lower solution
viscosities at the same solids
content and temperature ascompared with Elvanol™ 71-30
2. Suggested to be used whereverhigher viscosity, fully hydrolyzed polyvinyl alcohols aredesired, but a lower solution
viscosity is needed, particularly
useful as a pigment binder forceiling tile primers.
3. Elvanol™ 90-50 has a viscosity
similar to starches used inmetering size presses at line
speeds in excess of 1500
meters per minute.

Advantages:

Elvanol™ 75-15
Elvanol™ 75-15 is a unique,medium low viscosity, fully hydrolyzed copolymer polyvinyl alcohol.

Advantages:
1. Superior barrier for grease
proof packaging.
2. High solids coatings and sizings.
3. Highly compatible with starch.

PorousPowderLess
Foaming
Copolymers
improvedsolubility inalkaline
solution

Elvanol™ 80-18

ExcellentDissolution
Rate
Better Compatabilityin "PowderPowder"
Blend

Elvanol™ 80-18 is a medium viscosity fully hydrolysed copolymer
polyvinyl alcohol.

Advantages:
1. It is the easiest to be desized inakaline solution.
2. Gives good film strength fortextile sizing while being easierto split in the leasing section.
3. Low foaming.
4. High solids coatings and sizings.
5. Highly compatible with starch.

Elvanol™ T-25

Elvanol™ T-66

Elvanol™ 71-30

Elvanol™ T-25 is a unique nonfoaming copolymer polyvinyl
alcohol (PVOH) developed especially for use as a warp size forpolyester/cotton blends and otherspun yarns, alone or in combination with starch.

With lower viscosity thanElvanol™ T-25, Elvanol™ T-66 wasdeveloped specifically to meet thedemands of the new medium tohigh pressure slashers, in termsof better runnability and highersolids formulations, and toincrease the productivity of PVOH
Recovery Systems based on ultrafiltration, by huge improvement
in desizeability and flux rates.

Elvanol™ 71-30 is a medium
viscosity, fully hydrolyzed gradeof polyvinyl alcohol. It is soluble in
hot water but insoluble in cold water and common organic solvents.

Advantages:
1. Excellent weaving performancewith few loom stops.
2. High weaving efficiency even at
low humidity.
3. Lower add-on required withstarch formulas, resulting inless shedding on the loom andless frequent cleaning of dropwires, heddles, and reeds.
4. Non-corrosive and not subject
to spoilage.
5. Dissolves readily in hot water,
without the need for costly
enzymes.
6. Low BOD and COD comparedto many other sizes.
7. Economically recoverable andreusable.
8. Favorable cost performance.
transmission rates.

Advantages:
1. Easier to run on the slasher
than Elvanol™ T-25 when higher
solids are required in the sizebox.
2. Ideally suited for sizing warpsof weaving on high speed andshuttleless looms, permitting
the use of “100% PVOH”
formulas for maximum weavingefficiency (easy yarn splitting)and minimum shedding.
3. Easier to desize than Elvanol™
T-25 at lower temperature andwater flow rate.
4. Solutions of recovered T-66
have low viscosity and they areeasier to pump.

Advantages:
1. Widely used in the paperindustry at the size press andcalender stack, and in adhesives tackified with boric acid.
2. Suitable for wide range ofadhesive and paper applications
such as grease prooof coating,
UF glue etc due to its excellent
binder characteristic.The medium viscosity gives flexibility
in formulating water based
adhesives with boric acid withor without clay and/or starch.
3. Excellent film forming
characterictic with hot watersolubility, resistance to oils,
grease and solvents, as well
as low oxygen and water vapor
transmission rates.

Elvanol™ Specifications
Specifications

Elvanol™
71-30

Elvanol™
90-50

Elvanol™
T-25

Elvanol™
T-66

Elvanol™
80-18

Elvanol™
85-82

Elvanol™
75-15

Viscosity (4wt%aqueous, cps) 1

27.0 - 33.0

11.6 - 15.4

24.0 - 32.0

11.6 - 15.4

17.0 - 23.0

25.0 - 32.0

11.6 - 15.4

Hydrolysis 2

99.5

99.5

99.5

99.5

99.5

99.5

99.5

pH

5.0 - 7.0

5.0 - 7.0

5.0 - 7.0

5.0 - 7.0

5.0 - 7.0

5.0 - 7.0

5.0 - 7.0

Ash (wt%, assodium oxide) 3

0.7% max.

0.7% max.

0.7% max.

0.7% max.

0.7% max.

0.7% max.

0.7% max.

Volatiles (wt%)

< 5.0

< 5.0

< 5.0

< 5.0

< 5.0

< 5.0

< 5.0

Residual
Methanol (wt%)

< 1.0

< 1.0

< 1.0

< 1.0< 1.0

< 1.0

< 1.0

1 Viscosity in mPa.s (cP) of a 4% solids aqueous solution at 20°C (68°F)
2 Mole percent hydrolysis of acetate groups, dry basis
3 Dry basis, calculated as % Na 2O

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

03_2022