But with all its positive qualities, the foam is also disadvantages. It is negatively affected by oil paints; aldehydes, such as formaldehyde and formalin; aromatic hydrocarbons, such as xylol and benzene; ketones (of which acetone and methylence); polyester resins; petrol; kerosene; diesel fuel; methyl-acetate; ethyl acetate; Dethyl ether.