Lightly branched comb polyesters: application in fast drying solvent-borne coating formulations

Cheng, Ge, Greenland, Barnaby W, Lampard, Chris, Williams, Neal, Bahra, Malkit S and Hayes, Wayne (2013) Lightly branched comb polyesters: application in fast drying solvent-borne coating formulations. Reactive and Functional Polymers, 73. pp. 619-623. ISSN 1381-5148

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Novel oxazoline-based comb-polymers possessing linoleyl or oleic side chains have been synthesized and used to produce low viscosity coatings. Inclusion of the polymers in model paint formulations results in coatings that exhibit faster drying times than commercially available alkyd resin formulations. The comb polymers were produced from diol substituted oxazoline monomers that were synthesized through a scalable, solvent free protocol and purified by simple recrystallisation. Co-polymerisation of the oxazo- lines with adipic acid at 160 °C in the bulk resulted in the targeted polyester comb type polymers. The polymers were soluble in a range of organic solvents and compatible with commercial alkyd resins. Model paint formulations containing up to 40 wt% of the linoleyl-based comb polymers exhibited a dramatic reduction in viscosity (from 35 to 13 Poise at 25 °C) with increasing quantities of polymer added. Dynamic mechanical analysis (DMA) studies revealed that the drying rate of the model paint for- mulations containing the comb polymers was enhanced when compared with that of commercial alkyd resins.

Item Type: Article
Keywords: Oxazoline; Fatty acid; Comb polymers; Polyester; Alkyd coatings
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry
Depositing User: Barnaby Greenland
Date Deposited: 11 Apr 2018 14:05
Last Modified: 11 Apr 2018 14:05

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