caybraca

What is the difference between dbc and dbu?
Also what is the differance between DP401LF and DP402LF
Epoxy Primer Catalyst?

glassdave

DBC is PPG's earliest OEM mathcing system and is a bit outdated with a reactive reducer, DBC is their second effort OEM system. Both are great but DBC is more user friendly and uses a straight reducer and eliminates one product from the shelf. Both give pretty much the same results but i stick with DBC.

The DP401LF requires an induction time of about a half hour before the primer can be sprayed and has a long pot file (i think like 24 or 48 hours or something) the DP402LF is for impatient people (like me ) that want to mix an spray with no waiting but has a much shorter pot life (like a few hours) both give pretty much the same results.

caybraca

Thanks alot dave,but you refferd to both as dbc witch is witch. Thanks for your help.

glassdave

oops . . . DBU is PPG's earliest OEM system. and so on . . sorry bout that

customtouch

You might try wearing your respirator a little more often!!!!

glassdave

lol . . . . . . . bzzzzzzzzzzz

offshoredrillin

assclown?

DesertRage

PPG's P-pages (instruction sheets) say DP401LF will have as much as 50% better adhesion than the faster DP402LF especially on bare metal.

Dave, Do you buy into this? I used to shoot DP402 before it was replaced with the Lead Free product and had great results. Since the introduction of LF I have been using DP401LF hoping for the best possible grip.

Jon

glassdave

yes i would believe that for bare metal but doubt it is that much for gel coat. I only use the DP primers to spot prime and cover repairs on white gel. The only time i prime or seal completely is a full color change and have never had an adhesion problem. I use both 401 and 402 and lean toward 401 for the most part but do like to keep 402 on hand as well.