ELVANOL™ T-66

1 of 8 products in this brand
Elvanol™ T-66 by Kuraray is polyvinyl alcohol copolymer. It provides benefits including less skinning in the size box, fewer stuck ends, laps and ends out-of lease, non-corrosive and non-toxic. Elvanol™ T-66 is used on spun yarns of cotton, polyesters or blend yarns.

Functions: Resin

Chemical Family: Vinyls, Vinylics & Vinyl Derivatives

Technical Data Sheet

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Identification & Functionality

Plastics & Elastomers Functions

Features & Benefits

Advantages
  • Easier to run on the slasher than Elvanol™ T-25 when higher solids are required in the size box.

  • Ideally suited for sizing warps of weaving on high speed and shuttleless looms, permitting the use of “100% PVOH” formulas for maximum weaving efficiency (easy yarn splitting) and minimum shedding.

  • Easier to desize than Elvanol™ T-25 at lower temperature and water flow rate.

  • Solutions of recovered T-66 have low viscosity and they are easier to pump.

ON THE SLASHER

Elvanol® T-66 is easier to run on the slasher than Elvanol® T-25 when higher solids are required in the size box. There is less skinning in the size box, fewer stuck ends, laps, and ends out-oflease. Also, there is an easier break at the lease rods. The relatively low viscosity of Elvanol® T-66 results in better penetration of the yarn bundle for high add-on applications and produces smoother warps. This lower viscosity also results in energy savings due to the lower wet pick-up of the sized yarn. Less water needs to be evaporated per pound of yarn sized.

ON THE LOOM

Elvanol® T-66 is ideally suited for sizing warps for weaving on high speed, shuttleless looms. It permits the use of “100% PVA” formulas for maximum weaving efficiency and minimum shedding

ON THE FINISHING RANGE

Elvanol® T-66 is even easier to desize than Elvanol® T-25. It washes out at lower temperatures and/or water flow rates and helps reduce energy costs.

Applications & Uses

Markets

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (20°C (68°F), 4wt% aqueous)11.6 - 15.4cps
Degree of Hydrolysis99.5mol %
Ash Content (Sodium oxide)max. 0.7%
Residual Methanol Contentmax. 0.99wt %
pH5.0 - 7.0-
Volatiles Contentmax. 5.0wt %

Regulatory & Compliance

FDA Status

Elvanol® T-66 polyvinyl alcohol complies with U.S. Food and Drug Administration (FDA) Regulations under the following Section of Title 21 CFR, and may be used in contact with food, subject to the limitations and requirements therein:

  • 175.105 - Adhesives

Technical Details & Test Data

Resin Characteristics

Elvanol® T-66 polyvinyl alcohol (PVA) is a unique copolymer supplied as a white, granular solid. Elvanol® T-66 slurries easily in cold water without lumping and dissolves readily on heating to 85ºC (185ºF) or higher for 20-30 minutes. Solutions of Elvanol® T-66 are noncorrosive and nontoxic. They are stable in viscosity and can be stored for long periods – for example, over weekend shutdown periods.

Effects of Concentration and Temperature on Viscosity

Kuraray ELVANOL T-66 Effects of Concentration and Temperature on Viscosity

Storage & Handling

Safety and Handling

Elvanol® T-66 is technical quality polyvinyl alcohol. It is not recommended for inclusion in any food or preparation that might be taken internally.

Elvanol® may be disposed of by incineration or landfill. However, any disposal method must be in compliance with all applicable local, state and federal regulations.