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> Has anyone found a way to preserve POR-15, after opening it?
bondo
post Jan 27 2005, 11:52 AM
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I buy my POR-15 in quarts, but still never use nearly that much at a time. I tried to seal it in a plastic soda bottle, but it kept pressurizing it and I had to vent it every once in a while (exploding soda bottles are messy, but exploding soda bottles full of POR-15 are messy beyond all comprehension). Eventually it solidified, and I had to toss it.

An unopened can will last for years.. has anyone found a way to preserve that life after opening?
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Brian_Boss
post Jan 27 2005, 02:54 PM
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QUOTE
I believe the POR is a "moisture cure urethane". Moisture in the air release the blockers of the isocyanate (catalyst) which gives the paint its very durable and chemical resistant properties.


IIRC, the moisture is actually a catalyst that triggers the linking of the urethanes. Since a single H2O molecule in the can will _eventually_ make the whole mess solidify, anything you do is just delaying the inevitable.
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Posts in this topic
bondo   Has anyone found a way to preserve POR-15   Jan 27 2005, 11:52 AM
jr91472   great question. I think you are suppose to just r...   Jan 27 2005, 11:56 AM
Root_Werks   Use a piece of plastic bag when you put the lid on...   Jan 27 2005, 11:57 AM
Eric_Shea   I cover mine with kitchen plastic wrap and install...   Jan 27 2005, 11:58 AM
bondo   I tried the can reseal thing, (with saran wrap) as...   Jan 27 2005, 12:00 PM
bondo   Ooh, refrigeration.. good idea!   Jan 27 2005, 12:01 PM
Root_Werks   I have read somewhere,,,,, can't recall where ...   Jan 27 2005, 12:03 PM
Elliot Cannon   I poured the rest of mine into a large pickle jar....   Jan 27 2005, 12:07 PM
MarkV   I bought a new can & lid at the harware store.   Jan 27 2005, 12:20 PM
type11969   I have a can of por 15 that has been sitting in my...   Jan 27 2005, 12:21 PM
SirAndy     Jan 27 2005, 12:35 PM
Urban Redneck   Andy's correct keep the paint from being expos...   Jan 27 2005, 12:38 PM
scott thacher   here is a trick put the lid on what ever containe...   Jan 27 2005, 12:39 PM
charlesmac   I've sealed it with plastic wrap before and it...   Jan 27 2005, 12:43 PM
Joe Ricard     Jan 27 2005, 12:57 PM
lapuwali   I should note that it doesn't have an infinite...   Jan 27 2005, 01:08 PM
ewdysar   My wife paints scenery for TV shows and the likes,...   Jan 27 2005, 01:13 PM
736conver   Another tip that works with any kind of paint. Pu...   Jan 27 2005, 01:14 PM
7391420   I had the same problem, -if you dont get a good se...   Jan 27 2005, 01:18 PM
TonyAKAVW   I am not sure how well it is going to work, but I ...   Jan 27 2005, 01:22 PM
SpecialK   I've had pretty good luck using cap plugs (siz...   Jan 27 2005, 01:34 PM
Eric_Shea   A painter friend says thin it with Lacquer Thinner...   Jan 27 2005, 02:16 PM
type11969   do the small cans only have a shelf life of a year...   Jan 27 2005, 02:51 PM
Brian_Boss     Jan 27 2005, 02:54 PMAaron Cox   slightly off topic.... but how do i get it off my...   Jan 27 2005, 03:22 PM
jkeyzer   Keep it under dry nitrogen. http:...   Jan 27 2005, 03:22 PM


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