204 PAINT TECHNOLOGY AND TESTS 



One product under test on the Southern Test Fence is pine 

 oil, a high boiling point product obtained from the manufacture 

 of wood turpentine from sawdust. This oil has a boiling point 

 of over 210 degrees Centigrade as against the 150 degrees of 

 ordinary gum spirits. It is almost water white and has the 

 same penetrating qualities as the pure gum spirits; when mixed 

 with 50% linseed oil forming a paint oil of extremely light color, 

 that produces a semi-flat paint of great whiteness. 



Reductions and Application. Formulas No. 1 to No. 37 were 

 all ground in pure refined linseed oil. They were made in the 

 form of semi-paste and then thinned down with sufficient refined 

 linseed oil so that each would have a relative viscosity. To 

 each formula was then added a sufficient amount of pure lead and 

 manganese linoleate drier to give proper drying qualities. On 

 thinning for the priming coat, one pint of turpentine was added 

 to each gallon of paint. For the second coat, one-half pint 

 turpentine and one-half pint refined linseed oil were added to 

 each gallon. For the third coat work, reduction was made with 

 one pint of refined linseed oil. 



In the case of formulas 31 to 37, reductions were the same, 

 except that a series of specially prepared wood turpentines were 

 used in place of the pure gum spirits used in formulas 1 to 31. 



Formulas 38 to 41, as will be shown, were ground in equal 

 parts of the oils tested. These formulas, however, were all 

 thinned for application with pure gum spirits of turpentine, 

 and the respective vehicle in which they were ground. 



No inspection of the Tennessee Test Fence has yet been made. 

 The formulas tested are as follows: 



FORMULAS FOR SOUTHERN TEST FENCE 

 VEHICLE: Bleached Linseed Oil with Lead and Manganese Linoleate Drier. 



Formula 

 No. 



1 l Corroded white lead 100% 



2 l Sublimed white lead 100% 



3 Zinc oxide XX "100% 



4 Zinc lead white 100% 



5 Leaded zinc 65%, corroded white lead 35% 



6 ! Corroded white lead 100% 



7 * Corroded white lead 100% 



1 Corroded White Lead is the Basic Carbonate of Lead. Sublimed White 

 Lead is the Basic Sulphate of Lead. 



