Anyone ever use "Penetrol"

[ThreeSummers]

I'm preparing a little paddling boat that I built, ply, for painting - it's coated with epoxy and sanded down, but inevitably I've sanded through the epoxy in a couple of patches. I was sold some Penetrol (marine) for another purpose, but they say it can be used as as sealer/primer on wood before painting, and painted without further sanding.

Anyone have any experience of the stuff? And does it do what it says on the tin?

Regards,

Tim.

 

[David2452]

Isn't that stuff just fancy paint thinners?

 

[VicS]

Isn't that stuff just fancy paint thinners?

Googling for it I thought it might be something like Owatrol

Penetrol is a performance additive for wood and metal primer. When used alone, Penetrol restores luster to faded fiberglass. As a paint additive for wood and metal primers, it increases penetration and adhesion. When added to enamels and varnish, brushing is easier with less drag and pull. Penetrol also protects and polishes all metals.

I reckon it will be a poor substitute for the epoxy coating

 

[sarabande]

Penetrol MSDS

Ingredients
Stoddard Solvent 64742-47-8 57% Proportion not set
Mineral spirit 8052-41-3 <11% Proportion not set
Ethyl benzene 100-41-4 <0.01%
Other non hazardous ingredients secret to 100% Proportion not set



Stoddard solvent is dry cleaning fluid

 

[VicS]

Penetrol MSDS

Ingredients
Stoddard Solvent 64742-47-8 57 Proportion not set
Mineral spirit 8052-41-3 <11% 790 Proportion not set
Ethyl benzene 100-41-4 <0.01%
Other non hazardous ingredients secret to 100% Proportion not set



Stoddard solvent is dry cleaning fluid

I think you will find Stoddard solvent is white spirit. ~~~~Its what you order so that the powers that be dont know you are buying white spirit.

 

[sarabande]

there seems to be a lack of clarity, some technical confusion, and a dollop of historical inaccuracy in the wiki article, then.

https://en.wikipedia.org/wiki/White_spirit



This source seems to have an element of scientific rigour.

http://www.atsdr.cdc.gov/toxfaqs/tf.asp?id=415&tid=73

 

[cliff]

Penetrol is more a solvent than anythng else - If you do not want to re-epoxy I would use low viscosity "super glue" as it will soak into the ply and once hardened seal the ply - I use it quite a lot to seal end grain and damaged ply surfaces. rubs out well with some fine wet and dry but if carefully applied I find no need to rub out the final coat (I usually apply 2 coats)