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Class Information
Number: 568/762
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Purification or recovery > From oil or tar derived from fossil fuel or wood > Alkali metal hydroxide utilized
Description: Processes wherein a hydroxide of a Group IA metal is employed in the separation.










Patents under this class:

Patent Number Title Of Patent Date Issued
5476975 Extraction of toxic organic contaminants from wood and photodegradation of toxic organic contaminants Dec. 19, 1995
5235021 Resole resin products derived from fractionated organic and aqueous condensates made by fast-pyrolysis of biomass materials Aug. 10, 1993
5223601 Phenolic compounds containing/neutral fractions extract and products derived therefrom from fractionated fast-pyrolysis oils Jun. 29, 1993
5115084 Method for controlling oil reservoir permeability using biomass oil May. 19, 1992
5091499 Process for preparing phenolic formaldehyde resole resin products derived from fractionated fast-pyrolysis oils Feb. 25, 1992
5034498 Method and apparatus for producing water-soluble resin and resin product made by that method Jul. 23, 1991
4942269 Process for fractionating fast-pyrolysis oils, and products derived therefrom Jul. 17, 1990
4900873 Method of manufacturing phenols from lignin Feb. 13, 1990
4547596 Separation and recovery of alkylated phenols Oct. 15, 1985
4508886 Method for making adhesive from biomass Apr. 2, 1985
4233465 Fractation of oil obtained by pyrolysis of lignocellulosic materials to recover a phenolic fraction for use in making phenol-formaldehyde resins Nov. 11, 1980
4209647 Fractionation of oil obtained by pyrolysis of lignocellulosic materials to recover a phenolic fraction for use in making phenol-formaldehyde resins Jun. 24, 1980
4208350 Separating phenols from alkaline pulping spent liquors Jun. 17, 1980
3974084 Process for the manufacture of anhydrous alkali metal arylate solutions and separation of the arylates from alkali metal sulfite Aug. 10, 1976











 
 
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