The solvent composition, method of stabilizing a composition solvent additive composition, method of cleaning the cold of a substrate with a solvent, a method of reducing the amount of resu00ecduo left by the evaporation of a solvent stabilized composition.

摘要

The solvent composition, method of stabilizing a composition solvent additive composition, method of cleaning the cold of a substrate with a solvent, and a method of reducing the amount of resu00ecduo left by the evaporation of a solvent stabilized composition.Certain substituted phenolic compounds when used with or without 1,2 epoxides as the only components stabilizers are very effective in stabilizing n-propyl bromide (NPB).In a standard test commercially important stability 60 198 C, the phenolic compounds substituted representative used as this invention may allow NPB on test even if present at levels of approximately 50 ppm (w / W) or less in NPB that contains nenh Another component additive stabilizer.In fact, the quantities as low as 1 ppm was found effective with various substituted phenolic compounds. In addition, it was found that one of the preferred stabilizers of this invention - 2,6 di - tert - butyl - p-cresol, even in spite of the boiling point is larger than that of NPB, left quantities inconsequ00fcu00eancias residue at least throughout the scale of 1 to 30 ppm (w / W).Also, it was found that certain other preferred stabilizers of this invention may provide improved stability sinergisticamente in switching to the stability test 60 198 C when used with at least one 1,2 epoxy, notably butylene oxide.