, international DVD sales have provided a steady flow of foreign exchange that the company repatriates back into Nigeria.
The objective of this effort was to evaluate waterborne vinyl acetate and vinyl chloride-based copolymers, specifically vinyl acetate-ethylene (VAE) copolymers and ethylene-vinyl chloride (EVCl), for use in water repellent coatings for exterior wood applications.
Extensive testing of waterborne VAE, EVCl, and other vinyl acetate-based polymer emulsions show that these polymer systems are very effective materials for formulating low-VOC (< 100 g/L) water repellent coatings for exterior wood applications.
Overall, the balance of performance may be best with a trade off between several of these desirable properties when selecting among the variety of VAE and EVCl resins available.
Air Products is still the one and only company that can provide a complete line of low-formaldehyde emulsion binders - including VAE's, EVCL
's and acrylics.
When used in conjunction with commercial flame-retarding additives, EVCL
emulsions greatly reduce the flammability of nonwovens.
For example, EVCL
films are heat sealable at low temperatures when using dielectric or ultrasonic processes.
The company's product line also includes several Airflex ethylene-vinyl chloride (EVCL) emulsions that serve as binders and coatings for nonwoven products.
For example, EVCL films are heat sealable at low temperatures and when using dielectric or ultrasonic processes.