isocyanates

[the snooper]

Did you all know that some water based paints for the automotive industry (and maybe others) contain isocyanates

 

[carlos 318is]

How when they are water based

 

[brightspark]

Did you all know that some water based paints for the automotive industry (and maybe others) contain isocyanates

this will open a can of worms hse police will arive shortly
:

 

[the snooper]

also did you know that

flame cutting, or welding substrates that have been coated with
isocyanate products?
A. Flame cutting, brazing, welding, or fire conditions are situations that
generate high temperatures which could result in thermal decomposition
of the coating. Fumes, gases, and vapors that are generated by these
processes may include, but are not limited to, carbon monoxide, oxides
of nitrogen, traces of hydrogen cyanide, and free isocyanate. Refer to
the product SDS/MSDS for other possible hazardous decomposition
products. The nature of the fumes, gases, vapors, or particulates may
vary depending on the type of process being used to weld or cut, the
nature of the base metal, and the type of coating system. Removing the
coating before high-temperature processing will reduce the potential
exposure to isocyanate-containing fumes and vapors. Ventilation (local
or general area) is needed to remove decomposition products during
these operations.

 

[the snooper]

How when they are water based

i dont know ive just discovered this from the hse web site so beware

 

[langy]

Water base only refers to the basecoat, primer and lacquers are still 2 pack i'm afraid.

Did you all know that some water based paints for the automotive industry (and maybe others) contain isocyanates

 

[the snooper]

Water base only refers to the basecoat, primer and lacquers are still 2 pack i'm afraid.

langy not according to the hse
it doesnt say the laquer used with, it says water-based

Vehicle paint spraying and occupational asthma
Paints containing isocyanate are used extensively in MVR. Isocyanates are found in most vehicle coatings even in some ‘water-based' paints. Remember, 'water-based' does not necessarily mean 'isocyanate-free'. Spraying produces the highest exposures and is the main cause of occupational asthma. MVR paint sprayers have an 80 times higher risk of getting asthma compared with the UK working population. Every year over 50 sprayers are diagnosed with isocyanate asthma and most have to leave the industry. Below are some key tips for vehicle paint sprayers and owners of motor vehicle repair bodyshops

 

[langy]

There was a water based lacquer released a few years ago but it wasn't any good, everybody I know uses 2 pack clear.

I'm not sure why that says otherwise ???

langy not according to the hse
it doesnt say the laquer used with, it says water-based

Vehicle paint spraying and occupational asthma
Paints containing isocyanate are used extensively in MVR. Isocyanates are found in most vehicle coatings even in some ‘water-based' paints. Remember, 'water-based' does not necessarily mean 'isocyanate-free'. Spraying produces the highest exposures and is the main cause of occupational asthma. MVR paint sprayers have an 80 times higher risk of getting asthma compared with the UK working population. Every year over 50 sprayers are diagnosed with isocyanate asthma and most have to leave the industry. Below are some key tips for vehicle paint sprayers and owners of motor vehicle repair bodyshops

 

[danelectro]

Agree with Langy,

Clearcoats and primers will always have Isocyanates, only ever seen water based basecoat.

Would be very interested if anyone can prove this theory wrong

 

[the snooper]

me too i would never have thought it to be the case but until we know otherwise

 

[the snooper]

just had a google around and there are waterbased paints that use isocyanates as dryers but cant find much on the subject i will keep looking

 

[Faaluke]

So are there any safe paint types to use at home with a half mask? Or is it all airfed required to be safe?

 

[the snooper]

cellulose is ok so is synthetic but i wouldnt recomend the last

 

[mike os]

hmm... looks like time to move over to an airfed mask then.....

 

[Chipper]

Wonder why the iso's in waterbase? In normal 2k it reacts with the paint element o'course. But in waterbase it must be already there so what is it's purpose. It can't be a hardener else the paint would harden in the cans. Is it minute quantities. Curious.

Lechler do a two-component waterbased clearcoat and hardener but there is no tech sheet for the hardener, and they didn't reply when I asked for one / and whether there are iso's in it.

 

[langy]

In the original post it says only some have it.

To be honest I still find 2 pack to be the best, why people use celly or synthetic is beyond me !!!

Wonder why the iso's in waterbase? In normal 2k it reacts with the paint element o'course. But in waterbase it must be already there so what is it's purpose. It can't be a hardener else the paint would harden in the cans. Is it minute quantities. Curious.

Lechler do a two-component waterbased clearcoat and hardener but there is no tech sheet for the hardener, and they didn't reply when I asked for one / and whether there are iso's in it.

 

[Omniata]

I hope somebody will correct me if I'm wrong but you can't have free isocyanates in solution with free water.

The two react end of story...
I did a lot of work with iso and paints, prepolymers etc...


The HSE have been know to make errors before on their documents, especially with the isocyanate documents...