配方类型:

ELASTOMERS, POLYMERS, AND RESINS

配方说明:

配方组成:

phthalic anhydride/286 g
"acintol" FA-2/299 g
monopentaerythritol/258 g
xylene/80 g
benzoic acid/157 g
medium oil benzoic modified chain stopped

配制方法:

charge the benzoic acid, xylene, monopentaerythritol, 150 g of "acintol" FA-2 and 248 g of phthalic anhydride to a 2-1 flask and heat to 235 C. maintain this temperature until the acid number is less than 5 mg KOH/g and then add the remaining "acintol" FA-2 and phthalic anhydride. heat to 235 C and maintain at this temperature until the acid number is less than 15 mg KOH/g. dissolve the alkyd in xylene to give a solution having 50 wt. percent solids.
properties of analkyd prepared by the above procedure are listed below: color (gardner 1963)/2/3 visc. (gardner-holdt)-Z N.V.-51% A.N.N.V-12.4 phthalic anhydride content-31% benqoic acid content-17%