Posted by Sherman in Idaho [162.158.255.80] on Friday, February 12, 2016 at 02:34:21 :
In Reply to: Weird paint experience posted by Tim Holloway [108.162.219.246] on Thursday, February 11, 2016 at 20:51:35 :
I suspect it's a urethane type paint. The MSDS lists all kinds of isocyanates in it. I'm no chemist, but a lot of paints are going to urethane to avoid dodge the California VOC rules. They never keep well once the can has been opened. They cure by reacting with moisture in the air rather than by drying like regular paint. That means you can't just peel the skin off a half-used can and use what's left. I've had other kinds gel up in the can. I haven't seen one foam like that but it doesn't surprise me since similar chemistry is used in spray foam insulation and gorilla glue. Paint definitely isn't what it used to be.