SPI Epoxy Activator Shelf Life

[Barry]

Joined: 11 Feb 2007
Posts: 535
Location: Woodridge, Illinois
Posted: Sun Aug 01, 2010 8:39 pm Post subject: Epoxy Activator

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Barry K,

Went to spray some epoxy today and when I started to pour in the activator it looked darker then usual. Like a dark cup of tea.

The date on the bottom of the can is 1/21/09 is it still good or should I order some new activator? I have like 3/4 of a gallon left.

I do have another quart of activator unopened but it has no date on it. Is it ok to use this one if so then I would only need to purcahse 2 new quarts?

All my paints I keep in the basement before use. If that makes any difference.

Thanks for all you have help me out on in the past.

_________________
Tom Malas
1931 Packard Std 8 833 Coupe 468
http://s153.photobucket.com/albums/s210/packin31/

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rusty428cj



Joined: 21 Jan 2006
Posts: 510
Location: Port Richey, Florida
Posted: Sun Aug 01, 2010 10:10 pm Post subject:

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I have noticed it gets darker over time but I still use it and haven't had a problem.

_________________
Rusty Gillis

Gillis Performance Restorations
727-847-7973
www.gillisrestorations.com

Former SS/FA & SS/GA NHRA National Record Holder

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Barryk



Joined: 14 Jan 2006
Posts: 4116
Location: Blairsville to Canton, Ga
Posted: Mon Aug 02, 2010 4:08 am Post subject:

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Its normal, the epoxy activator will darken as can is opened a and it gets air. Don't hurt a thing.

_________________
Barry@kives.net
404-307-9740 cell, tech line 7 days
706-781-2220 Office, Ordering 8-5 EST.
706-835-5897 Fax

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packin31



Joined: 11 Feb 2007
Posts: 535
Location: Woodridge, Illinois
Posted: Mon Aug 02, 2010 6:05 am Post subject:

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Thanks guys for the quick reply. That is great news

I did spray some small parts last night and checked them this morning and even thou they have a yellowish tint to them I tried pressing my fingernail into a spot and it did not leave a mark. That is great news

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[Silverado]

So how would one know NOT to use the activator? Is there a certain color or consistancy to it that one would know? Date from open? I opened a new can about 2 months ago, used it last week and I noticed it had a darker yellowish tint to it. I used it with no problems or discoloration of the primer. I did purge the can with argon this time though.

 

[Barry]

SPI Epoxy Activator shelf life

Color makes no difference, I have only seen two activators get week in last 15 years and both were about three years old and both were allowed to freeze and warm up every winter.

Epoxy goes weak over time, so I would just store at a stable temp, like in basement or closet when not using and plan on pitching in three years for safety sake.