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Class Information
Number: 530/209
Name: Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof > Natural resins or derivatives (e.g., wood or pine tar; cativo resin derivatives, etc.) > Recovery of tall oil or derivatives from papermaking waste, purification of tall oil, or separation of components of tall oil; or product thereof (e.g., separation of rosin, fatty acids, sterols, etc.; decolorizing, etc.) > Inorganic material used in the process, or product thereof (e.g., using sulfuric acid, boric acid, etc.) > Phosphorus or heavy metal containing material, elemental hydrogen, sulfur dioxide, or carbon dioxide used in the process, or product thereof
Description: Processes wherein there is utilized a material containing phosphorus, heavy metal, elemental hydrogen, sulfur dioxide, or carbon dioxide; or products of such processes.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6172183 |
Process and apparatus for the cleaning of crude tall oil soap |
Jan. 9, 2001 |
| 5455328 |
Method for acidification of soap with sodium bisulphite solution |
Oct. 3, 1995 |
| 5286845 |
Acidification of tall oil soap using carbon dioxide |
Feb. 15, 1994 |
| 5283319 |
Process and control strategy for the recovery and use of excess carbon dioxide discharge from a high pressure carbon dioxide acidulation process |
Feb. 1, 1994 |
| 5097012 |
Solvent extraction of fatty acid stream with liquid water and elevated temperatures and pressures |
Mar. 17, 1992 |
| 4521343 |
Process for separating fatty acids from rosin acids with phosphorus modified alumina molecular sieve |
Jun. 4, 1985 |
| 4495095 |
Acidulation and recovery of crude tall oil from tall oil soaps |
Jan. 22, 1985 |
| 4151160 |
Process for the separation of unsaponifiable constituents from tall oil fatty acids |
Apr. 24, 1979 |
| 4126604 |
Treatment of tall oil fatty acids |
Nov. 21, 1978 |
| 4075188 |
Recovery of crude tall oil |
Feb. 21, 1978 |
| 4005060 |
Method, applied in the production of tall oil, of preventing or reducing the emission of odorous sulphur compounds and/or acid sulphur combustion products from the black liquor recovery proces |
Jan. 25, 1977 |
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