Synthesis and evaluation of tetra(2,7-octadienyl) titanate as a reactive diluent for air-drying alkyd paints

Abstract

Environmental regulations are forcing the reformulation of many decorative and protective coatings systems. In particular, air-drying solventborne alkyd paints need to meet increasingly stringent emission limits and often must be reformulated with suitable exempt solvents or reactive diluents to achieve volatile organic compound (VOC) reduction. In the research summarized in this article, a new reactive diluent, tetra(2,7-octadienyl) titanate, was synthesized and evaluated in alkyd formulations for VOC reduction and property enhancement. A soy-based long-oil alkyd resin; a soy-based high-solids, long-oil alkyd resin; and a linseed-based, high-solids long-oil alkyd resin were evaluated in combination with the new reactive diluent at weight percentages ranging from 10% to 50%. Characterization included measuring viscosity, film dry times, and film performance of the reactive diluent formulations in comparison to neat alkyd resins used as control. The tetra(2,7-octadienyl) titanate formulations consistently exhibited reduced viscosities and dry times as a function of concentration. The resulting films were harder and more thoroughly cured than the control systems.

Effect of surface modified TiO2 nanoparticles on thermal, barrier and mechanical properties of long oil alkyd resin-based coatings

“…Alkyd resins based on non-toxic, biodegradable, multifunctional, low cost, physically and chemically stable and eco-friendly renewable resources such as vegetable oils show properties comparable with properties of products based on petroleum, and therefore have found their industrial application in paints and surface coatings [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Especially interesting low cost vegetable oil is soy bean oil, which has balanced composition of unsaturated and saturated fatty acids and it can reduce yellowing and oxidative degradation of resin [2,[16][17][18][19].…”

Synthesis and application of acrylic colloidal unimolecular polymers as a melamine thermoset system

“…Hardness of coating films can be evaluated by various methods such as Knoop hardness, pencil hardness, Taber abrasion, and Tukon hardness. Pencil hardness test was chosen because of its easy interpretation and convenience . Pencil hardness tests were performed on aluminum panels as per the ASTM method D‐3363 by using pencils of varying hardness in the range of 9B‐9H and the average of three readings was reported.…”

“…Pencil hardness test was chosen because of its easy interpretation and convenience. [15][16][17] Pencil hardness tests were performed on aluminum panels as per the ASTM method D-3363 by using pencils of varying hardness in the range of 9B-9H and the average of three readings was reported. The pencil was held against the coating at an angle of 45 and then pushed away from the operator for a 6.5-mm stroke followed by the…”