PTIís Air Dry Wash Primer is a polyvinyl butyral zinc chromate formulation that may be used to prime all plain or plated metallic surfaces. Priming surfaces with this primer will ensure maximum adhesion of all bake or air-dry finish coats (including lacquer finish coats). The finely ground emulsions of zinc chromate pigment, resins and phosphoric acid hardeners are virtually non-settling. Once applied, PTIís Air Dry Wash Primer requires no sanding. For the best results follow the instructions on the technical data sheet. This primer exceeds the performance standards specified in Department of Defense specification (DOD) 15328 and Military Specification MIL-8514.
Also available: PT-1045 Reducer
PT-1045 is specially formulated to compliment the PTI Air Dry Wash Primer
- PT-402 is a polyvinyl butyral zinc chromate formulation that may be used to prime all plain or plated metallic surfaces. Priming surfaces with PT-402 will ensure maximum adhesion of all bake or air-dry finish coats (including lacquer finish coats),
All parts must be chemically or mechanically cleaned so that they are film free. Only an industryrecognized method for cleaning should be used.
Mix 4 parts of component A to 1 part of component (catalyst) B. When applied by spraying, thin the 4 to 1 mixture as necessary with 2 to 3 parts PT- 1045 reducer.
Parts to be primed may he dipped or sprayed. Caution: PT-402 may "blush" (take on a gray coloring when drying) if applied in environments with extremely high humidity. If the primer does "blush," no bond exists between the primer and the surface of the material being coated. Before priming the surface again, wash the material being coated with PT-1045 reducer. A very thin film should be applied (approximately .2 mil). PT-402 will not promote adhesion if the coat applied is too thick. Too thick a coat of PT-402 will actually detract from the adhesion properties of the primer. The pre-treatment primer may be coated with a regular primer or topcoat within 15-30 minutes. If another primer is used, refer to its appIication instructions before appIying the topcoat.
- The finely ground emuIsions of zinc chromate pigment, resins and phosphoric acid hardeners are virtually non-settling. Once applied, PT-402 requires no sanding. PT-402 has a pot life of 8 hours. However, it can be "revitalized" after an 8 hour period by adding 3 parts of component A to the unused primer and then recatalyzing the mixture with the correct proportion of component B. Extreme humidity can affect the bonding of the coating.
Can I get the MSDS for this product?
We have added the MSDS for the Yellow Acid Etch Primer to this web page as a PDF file in the "Overview" tab.
I'm planning on painting a couple of wings. I was originally planning on stripping, alodining, priming, then painting the top coats. Would the use of the acid etch primer serve the same purpose as alodining?
Yes, the PTI acid-etch would take the place of etching and alodining. PTI recommends to apply the acid-etch on a clean surface, then epoxy prime, then top coat.