Vegetable oil based fatty amide as hydrophobes in associative thickener
Polymers and High Performance Materials
A vegetable oil based high performance associative thickener has been designed and synthesized from a hydroxyl functional soybean oil derivative (hydroxyl value 159 mg KOH/g). An isocyanate-terminated prepolymer was synthesized from polyethylene glycol (PEG) and isophorone diisocyanate (IPDI), and end-capped with the hydroxyl functional soybean oil derivative to prepare a hydrophobically modified ethoxylated polyurethane (HEUR) thickener. The synthesis was monitored by infrared spectroscopy via the isocyanate peak at 2258-2270 cm(-1). Thickener efficiency was tested with a commercial styrene-acrylic latex UCAR 443, an acrylic latex Acronal((R)) Optive 130 and an alkyd emulsion WorleeSol((R)) E 150W. High thickening efficiency was noted in the low shear region, e.g., 0.5 wt % HEUR loading with UCAR 443 increased viscosity from 0.66 P to 3.06 P at a shear rate of 1333 s(-1). The effect of soybean oil fatty amide based rheology modifier as additive in coating was evaluated in terms of gloss, viscosity, sag resistance, and flow and leveling properties. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1530-1538, 2013
JOURNAL OF APPLIED POLYMER SCIENCE
(2013). Vegetable oil based fatty amide as hydrophobes in associative thickener. JOURNAL OF APPLIED POLYMER SCIENCE, 130(3), 1530-1538.
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