This is the third installment of a series on new products that I recently tested. Along with that testing came the opportunity to fulfill my promise to those of you who read my articles. For months I have asked that you stay tuned because I would report back when I had the opportunity to spray the new zero formaldehyde products from M.L. Campbell. We also took this opportunity to test their new two-component water-borne conversion urethane. We have talked about those products the past two weeks. We also did a side by side comparison between their two pigmented conversion varnishes. That is our subject for this week.

I’ve not had the pleasure as yet of spraying the Chemcraft or the Sherwin Williams zero formaldehyde products. Hopefully, someday soon I’ll get that chance. So please, other than that it’s my job to work with M.L. Campbell on a daily basis, I also get opportunities to work with other products. But on this occasion, it was a matter of need to bring these products to market and that means that my thumbs up was necessary before we place a stocking order. Why shouldn’t you benefit from that opportunity?

Here’s a glimpse of what happens with these coatings when you pick up the gun and spray these out. I’ll also talk about why you would want to use these particular coatings.

Stealth is the new pigmented conversion varnish (PCV) formula from M.L. Campbell. Their flagship PCV, Resistant, has been around for years and is a great coating that I have used and loved for the fact that it is as bullet-proof as they come. For me, it sprays like a dream. But you can always improve somewhere when it comes to coatings formulations.

The negative side of any pigmented coating always includes what it does once it’s applied and cured. Resin technology in pigmented coatings, to this point in time, has had a problem with yellowing. That is not always obvious or apparent unless a stark white or light pastel is the color of choice. Even then you might not notice it unless you compare the back side of a door with the front. Some products yellow in the presence of light. Some yellow in the absence of light. Some do it in a very subtle way. Some are painfully obvious.

Resistant’s yellowing is very subtle as one would expect of a “flagship” product. Our experiment was to take a 12” X 16” plywood panel, prime it with the new Clawlock II post-cat primer, and then divide that panel in half and spray Resistant on half and Stealth on half.

As a footnote, this was also my first opportunity to spray Clawlock II. For those of you unfamiliar with it, Clawlock is a post-cat pigmented primer.

Your distributor will probably just make the decision to switch his stock to this new product and move forward. No worries! WOW!!! This stuff is nice…not that original Clawlock was a dog by any means. This new formulation sprays out and settles down like glass. What a pleasure. And most importantly, it sands so well.

End of footnote. We pick up again with a coat of Clawlock II on the panels. We scuffed that with P320, and then masked off half the panel. I applied Resistant to the exposed half. After catalyzing, I reduced that with C160-36 thinner at a ratio of 15:1 for spraying through my HVLP gravity gun. That was set aside and allowed to dry before it was scuffed. The second coat was applied from the same batch of material as the first. Then we pulled the masking and allowed the system to dry overnight.

The next morning, we were pleased with the results. Resistant has a great feel and it settles down so well. It was time to move on so we masked that off and mixed a batch of the new Stealth. I didn’t think the Stealth at the outset as I wanted to see how it sprayed right out of the can. So, other than catalyzing at 10:1, there was no deliberate reduction in viscosity.

I sprayed one or two panels and decided that a little of “Bernie’s Secret Sauce” would be helpful. I added about 8% of C163 Flow Enhancer II to the cup and mixed that in. Bingo! Now we had what we needed and the Stealth was laying down like glass. Before, it was just a bit dry. F.Y.I., I would expect some orange peelfrom any high solids conversion coating.

Again, this was allowed to dry and then scuffed with P320 before spraying the second coat. The masking was peeled and the coating was set aside to dry.

More surprises! The Resistant still felt great under the hand but the Stealth was even smoother. F.Y.I., we had sprayed the W358-14 version of Resistant and the W13814 version of the Stealth. The Resistant is the high hide white and the Stealth is a white opaque version. I did not alter the pigment loads in any way.

The Stealth was whiter than the Resistant. So, for the record, wait for it…here it comes.

Stealth is also a true non-yellowing formulation. That’s pretty unique.

Now you really have something that is worth looking at for your PCV projects. Please consider this list of features.

• It is non-yellowing in sunlight and in the absence of light.

• It is an ultra-low formaldehyde formulation with a low HAPS solvent package.

• Dry to sand in 30 – 45 minutes at 77°.

• Dry to stack at 4 – 6 hours at 77°.

• Exceeds AWI System 5 Conversion Varnish chemical and performance tests.

• Excellent scratch and mar resistance.

• Available in Gloss, Semi-Gloss, Satin, and Dull sheens in White Opaque and Clear bases.

• Resistant does not come in Dull.

• Can be tinted to any color you like.

What more need I say? Give this one a try. I know that my customers will be very happy that Stealth comes in four sheens and is a true non-yellowing formulation. And, in conclusion, don’t forget to ask for Clawlock II for your post-cat under coater. You take these products for a try and let me know your thoughts.

Until next time…spray on!

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