Patent ID: 9718940
Date: 2017-08-01
CPC Classifications: C08J

Claim:
1. A method for extracting, reducing and/or removing a harmful polycyclic aromatic hydrocarbon (PAH) from a PAH-containing material selected from water, oils, plants, wood, fats, rubber, plastics, or consumer goods that contain a PAH to obtain a material from which said PAH has been separated comprising the steps of: a) providing a liquid PAH-extracting composition comprising a turpentine liquid selected from the group consisting of natural turpentine, synthetic turpentine, mineral turpentine, pine oil, alpha-pinene, beta-pinene, alpha-terpineol, beta-terpineol, gamma-terpineol, 3-carene, anethole, dipentene (p-mentha-1,8-diene), terpene resins, alpha-terpene, beta-terpene, gamma terpene, nopol, pinane, camphene, p-cymene, anisaldehyde, 2-pinane hydroperoxide, 3,7-dimethyl-1,6-octadiene, isobornyl acetate, terpin hydrate, ocimene, 2-pinanol, dihydromyrcenol, isoborneol, alloocimene, alloocimene alcohols, geraniol, 2-methoxy-2,6-dimethyl-7,8-epoxyoctane, camphor, p-menthan-8-ol, alpha-terpinyl acetate, citral, citronellol, 7-methoxydihydrocitronellal, 10-camphorsulphonic acid, p-menthene, p-menthan-8-yl acetate, citronellal, 7-hydroxydihydrocitronellal, menthol, menthone, polymers thereof, and mixtures thereof, b) contacting said PAH-containing material selected from water, oils, plants, wood, fats, rubber, plastics, or consumer goods that contain a PAH with said liquid PAH-extracting composition such that an extraction mixture is formed, and a residual material is formed of material from the PAH-containing material that is not soluble in the liquid PAH-extracting composition, wherein the extraction mixture comprises at least a portion of said PAH extracted into and dissolved in the turpentine liquid, c) separating the turpentine liquid from said residual material, and d) after step c, removing the turpentine liquid from the residual material using methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, hexanol, or a mixture thereof.