Access the full text.
Sign up today, get DeepDyve free for 14 days.
Loading next page...
/lp/emerald-publishing/letter-from-america-usa-WeV0GMRatY
- Publisher
- Emerald Publishing
- Copyright
- Copyright © Emerald Group Publishing Limited
- ISSN
- 0369-9420
- DOI
- 10.1108/eb042948
- Publisher site
- See Article on Publisher Site
Abstract
New polyester polyols for urethanes are claimed to be fluid and pourable at room temperature. Called Urethall, they can be poured out of a drum at room temperature and uniformly manufactured using a novel dibasic acid technology, to the lowest end of the acidvalue scale with narrow hydoxyl and viscosity specification. Many polyols currently used for urethanes consist of solids that must first be melted in a hot room which can take several hours, and which have a limited operational range of acid values. Urethanes made from Urethanes exhibit incrementally better hydrolytic stability. In addition, the liquid polyols offer comparable hardness with less isocyanate and are said to elininate the need for plasticizers in certain flexible applications.
Journal
Pigment & Resin Technology – Emerald Publishing
Published: Jun 1, 1992