| |
 |
|
Class Information
Number: 530/504
Name: Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof > Lignins or derivatives > Carboxylic acid anhydride, or a compound having halogen bonded directly to acyclic carbon by nonionic bonding, reacted with a lignin or lignin containing substance, or product thereof
Description: Processes wherein a lignin or a lignin-containing substance is reacted with a carboxylic acid anhydride or with a compound having halogen (i.e., fluorine, chlorine, bromine, or iodine) bonded directly or indirectly to an acyclic carbon by nonionic bonding, or the reaction products thereof.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6572859 |
Non-anaphylactic forms of grass pollen Phl p 6 allergen and their use |
Jun. 3, 2003 |
| 6485841 |
Bio-oil preservatives |
Nov. 26, 2002 |
| 6172204 |
Compositions based on lignin derivatives |
Jan. 9, 2001 |
| 6054562 |
Modified lignins |
Apr. 25, 2000 |
| 5773590 |
Methods of separating lignin solids and black liquor from tall oil fatty acids |
Jun. 30, 1998 |
| 5749863 |
Fluid acquisition and distribution member for absorbent core |
May. 12, 1998 |
| 5608040 |
Process for the production of lignin-containing polymers |
Mar. 4, 1997 |
| 5484896 |
Esterified high lignin content cellulosic fibers |
Jan. 16, 1996 |
| 5202122 |
Process for enhancing the hypocholesterolemic effect of edible pulp and the product obtained thereby |
Apr. 13, 1993 |
| 5066790 |
Method of producing star-like polymers from lignin |
Nov. 19, 1991 |
| 4925923 |
Lignin having chemically bound sulfur and phosphorus groups mainly as thiophosphate, using phosphorus pentasulfide |
May. 15, 1990 |
| 4918167 |
Method of producing prepolymers from hydroxyalkyl lignin derivatives |
Apr. 17, 1990 |
| 4857638 |
Lignin having nitrogen and sulfur and process therefor employing thiourea |
Aug. 15, 1989 |
| 4739041 |
Alkylated oxidized lignins as surfactants |
Apr. 19, 1988 |
| 4534771 |
Selective crosslinking of low molecular weight sulfonated lignins and lignosulfate products produced thereby |
Aug. 13, 1985 |
| 4384997 |
Lignosulfonated derivatives for use in enhanced oil recovery |
May. 24, 1983 |
| 4329437 |
Process for the production of broken down lignin-cellulose silicate copolymers |
May. 11, 1982 |
| 4236579 |
Modified lignosulfonates as additives in oil recovery processes involving chemical recovery agents |
Dec. 2, 1980 |
| 4219471 |
Lignosulfonate derivatives |
Aug. 26, 1980 |
| 4184845 |
Process for reduction of lignin color |
Jan. 22, 1980 |
| 4131573 |
Process for making lignin gels in bead form |
Dec. 26, 1978 |
| 4017430 |
Coating composition |
Apr. 12, 1977 |
| 4007004 |
Dyestuff filler derived from kraft black liquor |
Feb. 8, 1977 |
|
|
|
