Maximum water and weather resistance is obtained by using a paint containing gilsonite coat and the gas-proofed tung or oiticica (or mixtures of the two) oil without the addition of any other drying oil, but it is found that while this combination is commercially usable, it is difficult to brush, and it is preferred to add a viscosity reducing drying oil.
A paint consisting essentially of 20 gallons of petroleum solvent and 10 gallons of linseed oil,10 gallons turpentine, pounds of Gilsonite pigment, 4 gallons varnish mixture consisting of 17.8% pentaerythritol rosin ester, 30.8% dehydrated castor oil, 1.4% of a mixture of lead.
commercial@pub-ltd.com
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Mrs.Mona