配方类型:

ELASTOMERS, POLYMERS, AND RESINS

配方说明:

Alkyds (Long Oil Alkyd, 30% silicone)

配方组成:

Phthalic Anhydride/97.2 g
Monopentaerythritol/74.5 g
"Silicone Intermediate Z-6018"/189.6 g
Xylene/80.0 ml
Glycerol (99.5%)/13.6 g
"Acintol" FA-2/263.3 g
Stoddard Solvent/320.0 g

配制方法:

"Acintol" FA-2, penta, glycerol, phthalic anhydride, and 40 ml of xylene are reacted at a temperature of 230 C until an acid number of 7-9 mg KOH/g is obtained. The reaction is carried out as an azeotropic cook with a reflux condenser and a trap to remove water. After cooling the alkyd to 190 C the "Z-6018" resin and remaining xylene are added and the reaction continued at a temperature of 190-200 C until the desired viscosity at 60% solids is obtained. At this point, the alkyd appears to be gelled. The stoddard solvent is added and the N.V. adjusted to 60%.
Visc.*---Z1-Z2 Color (Gardner 1963)---3 N.V.---61.0% A.N. Solids---6.1 Time to dry hard**/2.0 h *Properties of solution of the alkyd in Stoddard solvent at concentration shown (N.V.) **Wet film 0.0015 in., cobalt 0.095%, calcium 0.1% based on alkyd nonvolatiles.