In this aspect of the present invention, toluene or other aromatic solvent is replaced with another solvent, especially for example, a ketone-containing composition other than acetone such as methyl ethyl ketone, one of the esters of acetic acid such as ethyl acetate or methyl acetate, chlorinated hydrocarbons for example, methylchloroform, methylene chloride, chloroform and other solvents, for ex