Page 85 - Handbook of Adhesion Promoters

78 Typical Primer Formulations and Applications

0.04 wt% optical brightener (Uvitex OB)
56.9 wt% solvent (MEK)
15 wt% solvent (toluene)

5.2 COATINGS
4
Primer for epoxy coating on steel
40 wt% bisphenol-A epoxy resin
20 wt% phenol-novolac epoxy resin
5 wt% curing agent (dicyandiamide)
1 wt% accelerator (imidazole derivative)
25 wt% filler (silica)
9 wt% pigment (titanium dioxide)

5
Zinc-rich primer
10 wt% epoxy resin
5 wt% hardener (polyamide)
76 wt% zinc pigment
4 wt% propargyl alcohol impregnated mesoporous titanium dioxide
5 wt% solvents (mixture of MIBK, butyl cellosolve, and xylene)

6
Primer formulation for epoxy flooring
195 parts liquid epoxy resin (D.E.R. 353)
93 parts hardener (cycloaliphatic epoxy amine, Polypox H 354)

7
Permeable primer formulation for floor coating
36.7 wt% epoxy curing agent (Epilink 360)
31.1 wt% liquid epoxy resin (Ancarez 718NC)
1.5 wt% glacial acetic acid
30.7 wt% deionized water

8
Primer for automotive coating
4 wt% polyester resin (Desmophen 670-80)
4 wt% acrylic resin (Joncryl SCX 910)
12.8 wt% reactive diluent (Zoldine RD-20)
4.2 wt% reactive diluent (Incozol LV)
14 wt% aromatic polyisocyanate, TDI-based (Desmodur IL)
15.8 wt% aromatic polyisocyanate, diphenylmethane-4,4-diisocyanate
(Mondur MRS)
3 wt% uretdione of HDI (Desmodur 3400)
20.8 wt% pigments, including anti-corrosive pigments, fillers, TiO and
2
carbon black
4.7 wt% flow agent, polyacrylate type
16.8 wt% solvent, including esters and ketones