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#21
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You might be right, Paul, but there is a couple of key things about the 404/414 that's important. Whatever kind of epoxy is in it apparently doesn't 'care' (chemically) about what kind of paint you put on top. Plain boat building epoxies that risk amines being on the surface (I forget the proper name for the type ...it includes your no-blush I believe) often prevent alkyd enamels from curing. Regardless of what's in the 404/414, it works and that's the bottom line. At least I haven't discovered a paint that doesn't stick to it well. As the first guy pointed out, it can be confusing if you read the label and assume it's for under the waterline and would waterproof the boat under the paint. The other thing that's nice about the 404/414 is the high bodies and sandability. It has a LOT more stuff in it than other so-called high-body primers and as a result works much better for hiding minor sanding scratches and defects. It sands out nice without requiring you to kill yourself for it. So sure, call it a solvent filled cheap epoxy if you want ...but do you have an even cheaper solvent-filled cheap epoxy-based primer that works as well for primering under most any paint you want AND is high-build and fairs the boat nicely? Suggestions are welcome... I'd be happy to test your product side-by-side with the 404/414 and see if you're right. Brian "Paul Oman" wrote in message nk.net... Jim Conlin wrote: *RTFC!* The label on the can of Interlux 404 which is on my desk identifies its ingredients: *epoxy resin* xylene titanium dioxide magnesium silicate methyl isoamyl ketone The can of 414 indicates: *polyamide resin* aromatic petroleum solvent tri(dimethyllaminomethyl)phenol methyl n-amyl ketone silica The two ingredients formatted bold are, together, an epoxy resin system. The same ingredients are listed, by somewhat more technically specific names, on the interlux web site. -------------------- Yes - so it is just a solvent thinned, pigmented, cheap epoxy........ No doubt everyone pays big $$$ for them to add the solvent into an epoxy. Paul Oman progressive epoxy polymers |
#22
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Brian -
have you tried "old fashion oil based/solvent based" 1 part primers in comparison? Epoxy based primers are becoming more common, but even these old "oil primers' work well under LPU coatings. I'll have to get some 404/414 primer and do some tests too. Can we swop some products? paul progressive epoxy polymers Brian D wrote: You might be right, Paul, but there is a couple of key things about the 404/414 that's important. Whatever kind of epoxy is in it apparently doesn't 'care' (chemically) about what kind of paint you put on top. Plain boat building epoxies that risk amines being on the surface (I forget the proper name for the type ...it includes your no-blush I believe) often prevent alkyd enamels from curing. Regardless of what's in the 404/414, it works and that's the bottom line. At least I haven't discovered a paint that doesn't stick to it well. As the first guy pointed out, it can be confusing if you read the label and assume it's for under the waterline and would waterproof the boat under the paint. The other thing that's nice about the 404/414 is the high bodies and sandability. It has a LOT more stuff in it than other so-called high-body primers and as a result works much better for hiding minor sanding scratches and defects. It sands out nice without requiring you to kill yourself for it. So sure, call it a solvent filled cheap epoxy if you want ...but do you have an even cheaper solvent-filled cheap epoxy-based primer that works as well for primering under most any paint you want AND is high-build and fairs the boat nicely? Suggestions are welcome... I'd be happy to test your product side-by-side with the 404/414 and see if you're right. Brian "Paul Oman" wrote in message ink.net... Jim Conlin wrote: *RTFC!* The label on the can of Interlux 404 which is on my desk identifies its ingredients: *epoxy resin* xylene titanium dioxide magnesium silicate methyl isoamyl ketone The can of 414 indicates: *polyamide resin* aromatic petroleum solvent tri(dimethyllaminomethyl)phenol methyl n-amyl ketone silica The two ingredients formatted bold are, together, an epoxy resin system. The same ingredients are listed, by somewhat more technically specific names, on the interlux web site. -------------------- Yes - so it is just a solvent thinned, pigmented, cheap epoxy........ No doubt everyone pays big $$$ for them to add the solvent into an epoxy. Paul Oman progressive epoxy polymers -- "Living on Earth is expensive, but it does include a free trip around the Sun every year." ============================================ PAUL OMAN Progressive Epoxy Polymers, Inc. Frog Pond Hollow - 48 Wildwood Drive Pittsfield NH 03263 10:30-3:30 Monday-Thur EST 603-435-7199 VISA/MC/Discover/Paypal http://www.epoxyproducts.com ============================================ |
#23
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I've had LPU paints alligator alkyd (oil) paints. Only a few don't.
404/414 costs maybe $20/qt. Paul , someone who was seriously in business could afford that. "Paul Oman" wrote in message ink.net... Brian - have you tried "old fashion oil based/solvent based" 1 part primers in comparison? Epoxy based primers are becoming more common, but even these old "oil primers' work well under LPU coatings. I'll have to get some 404/414 primer and do some tests too. Can we swop some products? paul progressive epoxy polymers Brian D wrote: You might be right, Paul, but there is a couple of key things about the 404/414 that's important. Whatever kind of epoxy is in it apparently doesn't 'care' (chemically) about what kind of paint you put on top. Plain boat building epoxies that risk amines being on the surface (I forget the proper name for the type ...it includes your no-blush I believe) often prevent alkyd enamels from curing. Regardless of what's in the 404/414, it works and that's the bottom line. At least I haven't discovered a paint that doesn't stick to it well. As the first guy pointed out, it can be confusing if you read the label and assume it's for under the waterline and would waterproof the boat under the paint. The other thing that's nice about the 404/414 is the high bodies and sandability. It has a LOT more stuff in it than other so-called high-body primers and as a result works much better for hiding minor sanding scratches and defects. It sands out nice without requiring you to kill yourself for it. So sure, call it a solvent filled cheap epoxy if you want ...but do you have an even cheaper solvent-filled cheap epoxy-based primer that works as well for primering under most any paint you want AND is high-build and fairs the boat nicely? Suggestions are welcome... I'd be happy to test your product side-by-side with the 404/414 and see if you're right. Brian "Paul Oman" wrote in message ink.net... Jim Conlin wrote: *RTFC!* The label on the can of Interlux 404 which is on my desk identifies its ingredients: *epoxy resin* xylene titanium dioxide magnesium silicate methyl isoamyl ketone The can of 414 indicates: *polyamide resin* aromatic petroleum solvent tri(dimethyllaminomethyl)phenol methyl n-amyl ketone silica The two ingredients formatted bold are, together, an epoxy resin system. The same ingredients are listed, by somewhat more technically specific names, on the interlux web site. -------------------- Yes - so it is just a solvent thinned, pigmented, cheap epoxy........ No doubt everyone pays big $$$ for them to add the solvent into an epoxy. Paul Oman progressive epoxy polymers -- "Living on Earth is expensive, but it does include a free trip around the Sun every year." ============================================ PAUL OMAN Progressive Epoxy Polymers, Inc. Frog Pond Hollow - 48 Wildwood Drive Pittsfield NH 03263 10:30-3:30 Monday-Thur EST 603-435-7199 VISA/MC/Discover/Paypal http://www.epoxyproducts.com ============================================ |
#24
posted to rec.boats.building
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Thinning epoxy barrier coat
Robert or Karen Swarts wrote:
In the case of the 404/414, the can is labeled in bold print "Epoxy Barrier-Kote". In the case of Interlux's Epiglass epoxy, the ad in Boaters World catalog describes it as a two-part, high build primer suitable as a coating where gelcoat has been removed. I called Boaters World and they assured me the ad was written by Interlux. I called Interlux's tech line and they said that was not an appropriate application and didn't understand why it was described as such. ................. Just for the record, Jim, the can is labeled Epoxy Barrier-Kote. And the catalog describes is as suitable for above or below water applications. The directions also state that it must be thinned. ----------------- Interlux 404/414 is not a barrier coat. It's a sandable primer whose function is to provide a tie coat between sime substrate and an impervious finish coat such as an LPU paint. If applied as directed, it's just loaded with expensive solvents and is consequently pretty porous. Useless under bottom paint. If you are using it as a primer under finish paint and not under bottom paint, go for it. I'd try acetone. Let us know your result. "R ----------- A few things worth noting (I'm a marine and industrial epoxy vendor)... no such thing as expensive solvents (relative to the epoxies) ---- All of our epoxy primers are essentially just solvent thinned epoxy. You can add about 1 pint of solvent to 1 gal of resin (not including the curing agent) before you begin to 'damage' the epoxy, but for many applications no problem with using even a lot more solvent. no problem with adding solvent to any sort of barrier coat epoxy. Barrier coat epoxy is generally just industrial epoxy paint (resin plus pigment plus a thixo agent). Regular marine epoxy will work too but will probably drip and sag a good bit. regards paul oman progressive epoxy polymers ---- -- "Living on Earth is expensive, but it does include a free trip around the Sun every year." ============================================ PAUL OMAN Progressive Epoxy Polymers, Inc. Frog Pond Hollow - 48 Wildwood Drive Pittsfield NH 03263 10:30-3:30 Monday-Thur EST 603-435-7199 VISA/MC/Discover/Paypal http://www.epoxyproducts.com ============================================ |
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