| 摘要 |
<p>Alkyd resin comprises a polyacid component, preferably a biobased component or its acid anhydride, preferably biobased acid anhydride, a first polyol component, preferably a biobased component having two hydroxyl groups, a second biobased polyol component having 1,4:3,6-dianhydrohexitol unit, and a component based on biobased oil or its corresponding biobased fatty acid. Independent claims are included for: (1) an aqueous emulsion of the alkyd resin comprising 25-60 wt.% of the alkyd resin and an emulsifying agent (0.1-1 wt.%); (2) a paint formulation comprising the composition, the aqueous emulsion or the alkyd resin; (3) preparing the alkyd resin comprising polycondensing the components forming a reaction mixture of the polyacid component, preferably biobased component or its acid anhydride, preferably biobased acid anhydride, the first polyol component, preferably biobased component having two hydroxyl groups, the second biobased polyol component having 1,4:3,6-dianhydrohexitol unit, and the component based on biobased oil or its corresponding biobased fatty acid, where the components are continuously mixed at a temperature of 180-240[deg] C until the formation of the alkyd resin; and (4) preparing the aqueous emulsion of the alkyd resin, comprising heating the resin at a temperature of >= 40[deg] C, preferably = 90[deg] C for forming a mixture A, under stirring, optionally with the emulsifying agent, mixing a stabilizing agent with water and optionally with an anti-foaming agent and heating at a temperature of >= 40[deg] C, preferably = 90[deg] C for forming a mixture B, providing the mixture A in the mixture B with vigorous stirring using a device comprising a stirring blade rotates at 5000-8000 revolutions per minute.</p> |
