9 replies to this topic

[73MkIII]

Does anyone have any experience of using Isocyanate free 2k paint or know of anyone who has tried it? Just wondering if it is a viable but safer alternative to Isocyanate paint.

[r3k1355]

Had a look online recently myself, didn't find much useful information tho

 

Few mentions on online forums, one person reconed it was just very low Isocyanate and still dangerous, but didn't provide any information to back up that claim?

[73MkIII]

I went looking for 2k and looked at Jawel paints. It was discussed without conclusion years ago but they still sell it. Local to me so as can spray with just a mask I am likely to try it. If I do, my thread will have my findings but long way from paint at this stage. From what I can find it takes longer to harden. Heating and fans etc actually slow the hardening down oddly and finish is better than 1k and cellulose. Nothing to lose I guess.

[r3k1355]

From what I can find it takes longer to harden.

 

Probably why there's not much info on it from professional bodyshops, not much use to them if it takes longer to harden.

Time is money and 2K paint gives a great finish, why bother with anything else.

 

There are also waterbased paints available, which I seem to remember need decent airflow to dry them?

[Daz1968]

I have tried the non ISO hardener from Jawel in primer, was really disappointed it needed thinning far more than recommended as the hardener is like gel, it doesn't harden as good as 1k primer and was terrible to sand. Then to top it off any application of high thinners basecoat over it caused it to soften and sink. Was so bad I bought an airfed mask to use the proper hardener.

My choice if not set up for 2k isocyanate would be
High build epoxy primer
Solvent basecoat
Upol 1k clear coat.

the none ISO hardener just sits on the shelf awaiting my next tidy up when it will be binned

Edited by Daz1968, 03 October 2017 - 05:48 PM.

[73MkIII]

I have tried the non ISO hardener from Jawel in primer, was really disappointed it needed thinning far more than recommended as the hardener is like gel, it doesn't harden as good as 1k primer and was terrible to sand. Then to top it off any application of high thinners basecoat over it caused it to soften and sink. Was so bad I bought an airfed mask to use the proper hardener.
My choice if not set up for 2k isocyanate would be
High build epoxy primer
Solvent basecoat
Upol 1k clear coat.
the none ISO hardener just sits on the shelf awaiting my next tidy up when it will be binned

Thanks. Were you involved in the discussion on the mig welding forum? I found that today and the general consensus was as you have just said over 10 pages of discussion.

[bluedragon]

There are good non-isocyanate 2K paints.I use Chromabase from Cromax (formerly from DuPont, but sold to Cromax.) However, this line doesn't seem to be sold in Europe as far as I can tell.

 

It still has an activator, which is included with the reducer, but it's not isocyanate based. There is an optional isocyanate hardener (required for the paint to be warrantied for commercial work) but I've used it without the hardener on demanding surfaces like the nose of a car and it's held up well. It's a basecoat/clearcoat system (clearcoat required.)

 

Even though this line may not be available in some regions, it does demonstrate that good non-isocyanate 2K paint systems exist (Chromabase has been around for at least 15 years.) 

 

Just go to your local automotive paint vendor who sells to local paint and bodywork shops, and ask them what non-iso 2K paint product lines are good. They have no real reason to steer you wrong. You can always take the line they recommend and do further research on it.

[73MkIII]

My local vendor is Jawal which is the one on the mig forum, people on there experimented with that specific paint extensively and you could still scratch with a finger nail months later and you could not mask it off as the tape marked the finish. I am a fair ways off paint but, strange as it is to say it, 2k seems the way forward despite safety issues.

I have plenty of time to continue research though.

[bluedragon]

If the paint supply store sells only one brand, then their recommendations might be potentially suspect. Perhaps there's a shop that offers PPG, Glasurit, R-M, Sikkens, or Standox? These are some of the major names in auto painting worldwide. Do they even sell to home users in the UK and Europe?

[r3k1355]

LKQ coatings stock all of those brands, not sure if they sell to the public?

 

http://www.lkqcoatin...d-coatings.html