ISSN:
0369-9420
Source:
Emerald Fulltext Archive Database 1994-2005
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Hydroxy terminated polyesters were prepared by the reaction of tetrabromophthalic, phthalic, and maleic anhydrides with polyethylene glycol via melt condensation technique. They were characterized by hydroxy number, and intrinsic viscosity measurements. Also, the fire retardancy of polyesters was evaluated as varnish films on plywood strips. The polyesters were reacted with excess toluene -2, 4- diisocyanate to yeild isocyanate terminated prepolymers which were subsequently reacted with 5, 5- dihydroxymethyl-2-trichloro-methyl-1,3- dioxane or ethelene diamine. These polymers were characterized by Ir and 1H NMR spectra, viscosity measurements, and thermogravimetric analysis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1108/03699429910264097
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