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Class Information
Number: 530/505
Name: Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof > Lignins or derivatives > Compound containing nitrogen attached directly or indirectly to carbon by nonionic bonding reacted with a lignin or lignin containing substance, or product therof
Description: Processes wherein a lignin or a lignin-containing substance is reacted with a compound having nitrogen attached directly or indirectly to carbon by nonionic bonding, or the reaction products thereof.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6593460 |
Method for grafting lignin, polymerizates produced according to the method and the utilization thereof |
Jul. 15, 2003 |
| 6291558 |
Composition board binding material |
Sep. 18, 2001 |
| 6054562 |
Modified lignins |
Apr. 25, 2000 |
| 5773590 |
Methods of separating lignin solids and black liquor from tall oil fatty acids |
Jun. 30, 1998 |
| 5608040 |
Process for the production of lignin-containing polymers |
Mar. 4, 1997 |
| 5446133 |
Nitric acid oxidized lignosulfonates |
Aug. 29, 1995 |
| 5188665 |
Lignin amine salt-based binders for water-based black ink formulations |
Feb. 23, 1993 |
| 5077394 |
Porphyrins and uses thereof |
Dec. 31, 1991 |
| 5008382 |
Cationic aqueous bituminous emulsion-aggregate slurries preparation |
Apr. 16, 1991 |
| 4988799 |
Lignosulfonate based pharmacologic agent with anti-coagulant and anti-thrombotic activity |
Jan. 29, 1991 |
| 4952329 |
Separation of polymetallic sulphides by froth flotation |
Aug. 28, 1990 |
| 4892941 |
Porphyrins |
Jan. 9, 1990 |
| 4857638 |
Lignin having nitrogen and sulfur and process therefor employing thiourea |
Aug. 15, 1989 |
| 4846888 |
Oil well drilling cement dispersant |
Jul. 11, 1989 |
| 4786720 |
Sulfomethylated lignin amines |
Nov. 22, 1988 |
| 4769434 |
Lignin derivative polymers |
Sep. 6, 1988 |
| 4748235 |
Method of producing improved amine salts of lignosulfonates |
May. 31, 1988 |
| 4743268 |
Dispersant composition for azo dyestuffs contaminated with soluble copper impurities |
May. 10, 1988 |
| 4740591 |
Lignin by-products of paper-making process |
Apr. 26, 1988 |
| 4732572 |
Amine salts of sulfomethylated lignin |
Mar. 22, 1988 |
| 4715864 |
Lignosulfonate salts for use as dyestuff additives |
Dec. 29, 1987 |
| 4659739 |
Agricultural and horticultural guanidine-type fungicide and process for production thereof |
Apr. 21, 1987 |
| 4562236 |
Reaction product of lignosulfonate and unsaturated fatty amine |
Dec. 31, 1985 |
| 4546173 |
Selective crosslinking of low molecular weight sulfonated lignins and lignosulfate products produced thereby |
Oct. 8, 1985 |
| 4459228 |
Method for precipitation of sulphonated lignin from sulfide wastes |
Jul. 10, 1984 |
| 4336189 |
Process for recovering lignosulfonates from spent sulfite liquor |
Jun. 22, 1982 |
| 4313857 |
Broken-down organic lignin-cellulose silicate polymers |
Feb. 2, 1982 |
| 4265809 |
Method of making epoxide-lignin resins |
May. 5, 1981 |
| 4250088 |
Demethylated lignin and process |
Feb. 10, 1981 |
| 4219471 |
Lignosulfonate derivatives |
Aug. 26, 1980 |
| 4017419 |
Cationic bituminous emulsions |
Apr. 12, 1977 |
| 4007004 |
Dyestuff filler derived from kraft black liquor |
Feb. 8, 1977 |
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