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Water based Retarders8/2
My Chemcraft provider says that chemcraft doesnt package any retarder or flow additives for their waterbased line. He has instructed me to use Butyl Cellosolve(lacquer retarder) mixed with water 50/50 and add at 3 percent. He says for the stain however I should use Glycol Ether. Some sources I have looked up say that butyl cellosolve and glycol ether are the same thing. Is this true? or are they different chemicals?
Glycol ether is not a single chemical.
There is ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, etc.
Here's a list of synonyms for Butyl Cellosolve:
In general, if you look at that CAS number, anything with it, should roughly work in place of butyl cellosolve.
As for your problem:
If the stain requires *any* glycol ether, yes, butyl cellosolve will work.
If you want it to be exactly right, usually the easiest thing to do is look at the MSDS of the stain, pick out the glycol ether (usually referred to by one of the names you find on the wikipedia page for glycol ethers), and go get that to use as a retarder.
As an example:
If you look at the Target coatings water based retarder MSDS:
You will see it's just Dipropylene Glycol Monomethyl Ether and water.
While a lot of the glycol ethers can be used in place of each other for these applications, i'm not sure i'd play around with this for a professional finishing job unless I had a background in chemistry (or the manufacturer told me it was fine to use)
Propylene Glycol mixed at 5% will work just fine in all waterborne topcoats and stains as a retarder.......Obviously test samples first to be sure it doesn't act funny with your specific coating. It can be obtained pretty much across the whole internet because of it's uses for a wide variety of things.... Or you can buy it from general finishes as their extender.... they charge about ten times more because it's labeled general finishes extender...
Good Advice from everybody, but remember these are also the "cosolvents" in waterbased formulations. Use in very small amounts as you can throw the formulation out of wack real fast. Good Luck!!
Great info Guys. Thanks. If I buy pure propylene glycol do I need to cut it 1:1 with water before I mix it in to my coatings?
Shane I did notice that the coating was oddly tacky until cured when I tried the butyl cellosolve.
The other part to this is that 3-5% isnt all that much in regards to a wiping stain. With every other brand I typically max them out to the tune of around 15% just so they are pleasant to handle on larger pieces. except in the winter when I need them to speed up.
Is there anyone here who uses the chemcraft wb line who may be able to weigh in with any tips for the product?
First of all Butyl Cellosolve is to be used in solvent based systems only.