END-CRAFTING OF OLIGOESTERS BASED ON TEREPHTHALIC ACID AND LINEAR DIOLS FOR HIGH SOLIDS COATINGS

Authors
Citation
Gh. Teng et Fn. Jones, END-CRAFTING OF OLIGOESTERS BASED ON TEREPHTHALIC ACID AND LINEAR DIOLS FOR HIGH SOLIDS COATINGS, Journal of applied polymer science, 60(10), 1996, pp. 1609-1618
Citations number
13
Categorie Soggetti
Polymer Sciences
ISSN journal
00218995
Volume
60
Issue
10
Year of publication
1996
Pages
1609 - 1618
Database
ISI
SICI code
0021-8995(1996)60:10<1609:EOOBOT>2.0.ZU;2-H
Abstract
Oligomers derived from terephthalic acid and 1,6-hexanediol or 1,10-de canediol have been chemically modified through end-grafting with succi nic anhydride or trimellitic anhydride followed by glycidyl neodecanoa te. The grafted oligomers are paste-like semisolids or viscous liquids at room temperature. As the grafted oligomers are heated, their visco sity goes down to a minimum, then up to a maximum, and then down again . Combined DSC, crossed polarizing microscopy, and wide-angle x-ray di ffraction indicate that the grafted oligomers form crystalline domains dispersed in amorphous phase. The grafted oligomers are soluble in co mmon organic solvents, such as toluene, at lower concentrations (<14-5 1 wt %) and form stable dispersions at higher concentrations. High sol id coatings formulated with melamine or isocyanate resins gave glossy films with excellent combined hardness and impact resistance. (C) 1996 John Wiley & Sons, Inc.