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Douglas View Drop Down
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    Posted: 23 Jul 2010 at 9:27am

The shelf life of the hardner component of my Perfection Varnish, is all too short after I open the can and goes rock solid hard in a month or two.

Perfection Varnish is very expensive for me, so I try to save any remnants still in the can.

I was told about a product called "Bloxygen" , that can be sprayed into a partially used can of the varnish or hardner. This gas displaces the air, and thus extends the shelf life.

Would technical staff have any comments to share on using Bloxygen for this purpose ?



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Jay@Interlux View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay@Interlux Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jul 2010 at 1:22pm

Unfortunately we do not have any experience with "Bloxygen" nor have we ever heard of this product, therefore we would be unable to comment on the use of "Bloxygen" with our curing agents. What I've found to work best is adding a capful or two of Reducing Solvent Y2333N into the curing agent prior to resealing the can. The addition of this curing agent will help to prevent the premature hardening of the curing agent and will extend the shelf life. Also, the lids on the curing agent cans have changed. These cans now have a spout (called a Berg Top) which has a cap that can be easily removed and then reappiled to help seal the can. On your next purchase I would recommend picking up the product which shows this spout on the top of the curing agent as it will certainly make a difference as well as the addition of the Y2333N. Hope this helps!

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Douglas View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Douglas Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jul 2010 at 6:39pm
Hi Jay, T Y , for your quick reply, and tip about adding the reducing Solvent to the curing agent for Perfection Varnish.

I would suspect that the reducing agent will rest on the surface remnants of the agent and block if from air that causes it to harden in the can.
If this is correct there two other ways to block air, that I have read about.

Since Bloxygen is mostly Argon gas, just plane Argon gas could be used in place of Bloxygen, or even the Reducing Solvent.

A third way of extending shelf life of opened cans of varnish is to punch a v small hole in the top of the can. Then using a vacuum pump or vacuum cleaner, to evacuate the air in the can, then cover the hole with an impermeable tape, like plastic electric tape.

What I have tried and had success with is decanting LPG (propane) from my unlit gas torch, into your Goldspar varnish can, and I can say that does work well, but I hesitate to use the LPG in the curing agent, because I am afraid to spoil it.

There could be a forth way to solve my problem, too. That would be for International to request their distributers to sell only the curing agent as a seperate item, to their customers who ask for it.

Currently my Int'l distributer here in Singapore, won't sell the Perfection curing agent by itself, drats !


Douglas



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Jay@Interlux View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay@Interlux Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 2010 at 8:50am
Hi Douglas,
Not a problem at all and glad we could be of assistance. Yes you are correct in saying that the reducing solvent will remain on the surface and will block the air from causing the curing agent to harden in the can.
 
It may be possible to use the Bloxygen or Argon Gas, altough we haven't done any testing with these products, therfore we wouldn't be able to recommend the use of either product.
 
I can't say that I've actually tried the 3rd option which you've mentioned although, it seems as if it would work and will certainly have to try it out in the near future.
 
I would stay away from the LPG and the curing agent as it will most likely spoil the product and most likely make it unusable.
 
As for the packaging, Perfection is sold as a kit everywhere Perfection is sold, we have requested that the curing agent be sold as a separate component, however, I'm afraid that we haven't had much success, mainly due to the shorter shelf life of the curing agents and if they were to sit around on shelves for extended periods they could harden up without even being opened, which would make this stock useless. We will be sure to bring your concern up in the next meeting.
 
Thanks for the response back as well as providing the information above, we sure do appreciate it.
 
Jay
 
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Douglas View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Douglas Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2010 at 2:02am
Hi Jay, a follow up on the use of argon gas.

I went to my local argon gas supplier, who supplies argon gas to TIG welders.

He quoted me a price of $ 120.00, to purchase a 2.5 liter steel hp gas tank, with valve and regulator, and argon gas fill.

This would probably last me at least one year, judging by the amount of Perfection coatings, that I currently use.


Here in Singapore, a 750 ml 2 pack Perfection kit costs about $ 48.00 .

Now I need to calculate the numbers to see if saving the hardner, will also save me cash, from having to discard left overs, or to preserve them for future use.

Douglas

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Jay@Interlux View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay@Interlux Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2010 at 9:42am
Hi Douglas,
Thank you for providing us with the information. And we are looking forward to hearing your findings!
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