The Celvol® Polyvinyl Alcohol
Product Line
Celvol polyvinyl alcohol is manufactured from vinyl
acetate monomer (VAM) via a multistep process. VAM is polymerized into polyvinyl acetate and then converted
to polyvinyl alcohol.
Standard Grades
Individual Celvol polyvinyl alcohol
grades vary in molecular weight and degree of hydrolysis. Molecular weight is generally expressed in
terms of solution viscosity. The viscosities are classified as ultra low, low, medium and high, while
degree of hydrolysis is commonly denoted as super, fully, intermediate and partially hydrolyzed. A wide
range of standard grades is available.
Specialty Grades
In addition to Celanese's standard
product line, several specialty grades are available, including polymerization, fine particle size and
tackified polyvinyl alcohols.
- Celvol 805, 823 and 840 polyvinyl alcohols are improved versions of our
standard polymerization grades (Celvol 205, 523 and 540 polyvinyl alcohols, respectively). These products
offer a number of advantages in emulsion polymerization applications including improved water solubility
and lower foaming.
- Celvol polyvinyl alcohol S-grades are similar to standard grades,
but have a fine particle size so that 99+% of the product will pass through a U.S.S. 80-mesh screen.
These grades are available commercially as Celvol 203S, 205S, 523S and 540S polyvinyl alcohols.
- Tackified
Celvol polyvinyl alcohols are produced by controlled boration of super hydrolyzed and fully hydrolyzed
grades. These borated alcohols yield viscous aqueous solutions, which have a tailored degree of tack
and significantly reduce penetration when applied onto surfaces such as paper. HA-70 polyvinyl alcohol,
a highly borated product, is also available for specialty paper applications.
Celvol
Solutions
Celanese offers pre-made solutions of some of our standard grades. A
Celvol solution eliminates the dissolution step and offers a number of advantages including ready-to-use,
improved solution consistency and lower energy and processing cost (no cook required). Celvol solutions
are only available in the U.S.
Product Availability
Celvol standard and specialty
grades are available globally and are supported by a worldwide in-region sales force. Contact
us for more information.
