Dallas, Texas-Celanese Chemicals is to increase off-list prices on a range of polyol products with effect from 1 Jan 2006, or as contracts allow. Celanese also announced that, at the same time, it will change its procedure from quarterly price protection to monthly price protection for all customers and regions.In the US, Canada & Mexico, prices for trimethylol propane, 1,3 butylene glycol and pentaerythritol will rise by $0.12/lb, in Europe by Euros 200/tonne and in South/Central America, Asia, Africa and the Middle East by $250/tonne. For neopentyl glycol, prices will rise by $0.05/lb in the US, Canada & Mexico, by Euro 90/tonne in Europe and by $110/tonne in South/Central America, Asia, Africa and the Middle East. "