配方类型:

ELASTOMERS, POLYMERS, AND RESINS

配方说明:

Alkyds (Styrenated)

配方组成:

Base Alkyd:
"Acintol" FA-1/530 g
"Amoco" 95/259 g
Trimethylol Ethane (technical grade)/242
Color (Gardner 1963)---4
the remaining "Acintol" FA-1. Reheat to 260 C and maintain at this
Visc. (Gardner-Holdt)---Y/Z
"Acintol" FA-1 to a 2-1 flask and slowly heat to 260 C. Maintain this
N.V.---80.4%
temperature until the acid number is less than 10 mg KOH/g. The alkyd is
A.N.N.V.---8.7
Copolymerization with Styrene:
Base Alkyd (80% N.V.)/200 g
Xylene/175 g
\a-Methylstyrene/16 g
Styrene/145 g
Di-t-Butyl Peroxide/4 g
dissolved in xylene to give a solution having 80 wt. percent solids.
temperature until the acid number is less than 15 mg KOH/g and then add
Charge the isophthalic acid, trimethylol ethane and one-half of the
Properties of an alkyd prepared by the above procedure follows:

配制方法:

Charge the alkyd and xylene to a 1-l flask and heat to 145 C. Mix styrene, \a-methylstyrene, and peroxide and add over a 2-h period to the alkyd solution. The temperature during the addition and for 5 h after should be maintained at 140-150 C.
Properties of a styrenated alkyd prepared by the above procedure follow: Color (Gardner 1963)---2 Visc. (Gardner-Holdt)---T N.V.---59.6%