Page 92 - Handbook of Adhesion Promoters

5.7 Metal 85

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Two-pack wash primer formulation for temporary protection of steel
Part A
6.681 wt% curable phenolic resin in 70% butanol (Phenodur 263/70B)
11.84 wt% 2-propanol
2.537 wt% 1-butanol
0.127 wt% wetting and dispersing additive (Disperbyk)
5.497 wt% non-toxic anti-corrosion pigment (Shieldex AC5)
4.229 wt% filler (MicroTalc IT extra)
0.304 wt% rheological additive, fume silica (Aerosil R972)
0.127 wt% rheological additive, bentonite clay (Bentone SD-2)
48.65 wt% polyvinylbutyral resin (Butvar B-98)
Part B
1.226 wt% water
1.827 wt% phosphoric acid (85%)
15.31 wt% 2-propanol
1.649 wt% 1-butanol
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Corrosion-resistant primer
35.2 wt% short oil alkyd resin (Setal A F 26 X)
2.7 wt% solvent (methoxypropanol)
10.6 wt% filler (MicroTalc IT extra)
4.2 wt% iron oxide red pigment (Bayferrox 140)
4.2 wt% iron oxide yellow pigment (Bayferrox 420)
14.8 wt% calcium carbonate (Omya BLP 3)
8.4 wt% calcite (Calcit GS 20)
2.6 wt% thickener (Borchi Set 134)
0.8 wt% anti-skinning agent (Borchi Nox M2)
0.2 wt% drier (Octa-Soligen 203)
16.3 wt% solvent (White spirit D 60)

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Primer composition
0.2 wt% crosslinking agent (Silquest Y-11597)
0.2 wt% coupling agent (Silquest A-1100)
0.4 wt% coupling agent (Silquest A-1170)
1.5 wt% phosphoric acid
5 wt% methanol
92.7 wt% deionized water

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Red alkyl primer
7.67 wt% white spirit
44.19 wt% soybean oil alkyd (60% solid)
1.48 wt% 2% calcium naphthenate
1.2 wt% thickener (Bentonite HP210)
18.18 wt% iron red oxide
8.18 wt% calcium carbonate