配方类型:

COATINGS

配方说明:

Vinyl Acetate-Veova Latex for Wet Adhesion

配方组成:

Deionized Water/367.00
Abex 1404/45.30
Al-Co-Cure^T^M TMPTA/1.20
Vinyl Acetate/g
Sodium Persulfate/1.00
Sodium Metabisulfite/1.24
Sipomer WAM/5.00
VV-10 Vinyl Monomer (Veova)/343.00
t-Butyl Hydroperoxide (90%)/0.70

配制方法:

Charge to a 1-liter reactor 120 g water and purge with nitrogen while heating to 55 C. Prepare a solution of sodium persulfate in 36 g water. Prepare a solution of 0.98 g sodium metabisulfite in 50 g water.
Prepare a solution of Sipomer WAM in 20 g water. Prepare a pre-emulsion of vinyl acetate, Veova, TMPTA, and 0.5 g t-butyl hydroperoxide blend by addition of blend to a solution of Abex 1404 in 131 g water, with vigorous agitation. At 55 C charge to the reactor 4 ml of sodium metabisulfite solution, 2% of the preemulsion, and 4 ml of the sodium persulfate solution. Use fairly high agitation during seed latex preparation. After seed late formation, add pre-emulsion and redox system (sodium persulfate and metabisulfite) over 4 h. Add the Sipomer WAM solution over a 2-h period. Polymerize at 57-64 C. Post-add 0.26 g sodium metabisulfite and 0.2 g t-butyl hydroperoxide, each in 5.0 g water over a period of 45 min. Hold at 57-64 C an extra 20 min, after all materials are charged. Cool latex and discharge. <