US4562236A
Expired / Lapsed
US
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Reaction product of lignosulfonate and unsaturated fatty amine
Assignee: REED LIGNIN Inc A DE CORP
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Filing: 1984-12-14
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Granted: 1985-12-31
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Expires: 2004-12-14
Abstract
Abstract A reaction product and process for making the same of a lignosulfonate with an unsaturated fatty amine of 18 to 20 carbon atoms and an aldehyde. The process includes forming an aqueous solution of lignosulfonate at a solids concentration of 20% to 40%, adjusting the pH of the solution to above 10 or below 5, mixing the solution with a specified quantity of fatty amine to form a homogeneous mixture, adding the aldehyde to the mixture, and finally heating the mixture at a temperature of 25° C. to 100° C. for a period of one to 24 hours.
Inventors
- 👤 Stephen Y. Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:52
CPC Classifications
C; C08; C08H; C08H6/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
As a composition of matter, a reaction product of lignosulfonate containing about 2 to 8 percent by weight of combined organic sulfur, and about 0.05 to 2.0 millimoles, per gram of the lignosulfonate, of an unsaturated fatty amine of 18 to 20 carbon atoms, and 0.5 to 2.5 millimoles, per gram of the lignosulfonate, of an aldehyde.
Claim 2
Dependent Claim
57 words
As a composition of matter, a reaction product of lignosulfonate containing about 2 to 8 percent by weight of combined organic sulfur, and about 0.05 to 2.0 millimoles, per gram of the lignosulfonate, of an unsaturated fatty amine of 18 to 20 carbon atoms, and 0.5 to 2.5 millimoles, per gram of the lignosulfonate, of an aldehyde.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein said lignosulfonate is a sulfite lignin from the sulfite pulping process and wherein said amount of organic sulfur is about 4 to 8 percent.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein said lignosulfonate is a sulfonate lignin, and wherein said amount of organic sulfur is about 2 to 7 percent.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein said unsaturated fatty amine is selected from the group consisting of palmioleyamine, oleylamine, linoleylamine and linolenylamine.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein said unsaturated fatty amine is oleylamine.
Claim 7
Dependent Claim
25 words
The composition of claim 1 wherein said unsaturated fatty amine is in a mixture with not more than 50% by weight of saturated fatty amines.
Claim 8
Dependent Claim
29 words
The composition of claim 1 wherein said unsaturated fatty amine is derived from a source selected from the group consisting of palm oil, tall oil, lard and soybean oil.
Claim 9
Dependent Claim
24 words
The composition of claim 1 wherein said lignosulfonate is in an aqueous solution having a lignosulfonate solids concentration of about 20% to about 40%.
Claim 10
Dependent Claim
18 words
The composition of claim 1 wherein said aldehyde is selected from the group consisting of formaldehyde and furfural.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |