none, cyclic ethers such as tetrahydrofuran and dioxane, glycol ethers such as propylene glycol methyl ether, propylene glycol propyl ether, ethylene glycol ethyl ether and ethylene glycol butyl ether, carbitols such as methyl carbitol, ethyl carbitol and butyl carbitol, glycols or glycol ether lower esters such as ethylene glycol diacetate and ethylene glycol ethyl ether acetate, ketone alcohols