PPG basecoat clear coat question

[Gray E Fowler]

Much more detail is needed for your answers. There are many systems and 
mods thereof.  You need the exact type of color and clearcoat system, what 
catalyst you have, what clear you have and what basecoat you have.
In general for basecoats such as DBU an others you can mask in 40 minutes. 
Doubt it for clearcoat, even with the fast catalyst, and all of this is 
temperature dependent.
The amount of reducer reccomendend on the can is not necessarily the best 
for our applications. It is the smallest amount that allows a car 
paint-guy to apply to a car, which is not exaclty weight sensitive, and 
meet EPA VOC regs...thinner smoother coats can be achieved by adding more 
reducer, but I must caution....you are killing us all and creating more 
greenhouse effect.....so you must then live with that guilt. Next time you 
see a perfect paint job....know that the person is not and 
environmentalist!
Excuse me now while I go make something that blows up..... 



Gray Fowler
Principal Chemical Engineer
Composites Engineering




DrMarkMD at aol.com
Sent by: discussion-request at nsrca.org
02/24/2004 08:52 AM
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        Subject:        PPG basecoat clear coat question


I am going to pain a Temptation this weekend and bought the ppg clearcaot 
base cat system.  I was reading the paper that came with the paint and it 
says 
that we can mask in 20-40 minutes between coats.  Is that correct?  Can 
you pain 
and mask multiple colors in one day?

Do you really have to clearcoat within 24 hours or is there some wiggle 
room?

Do most people mix the paint reducer 1:1 as they suggest or do they reduce 

further?

Does the paint build up a film thickness excessively or is it thin?  I was 

thinking how Concept build a thick heavy film if one is not careful.

Thanks,

Mark Lamos
Baltimore

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