US3905926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable lignin derivatives
Assignee: Individual
•
Filing: 1973-12-14
•
Granted: 1975-09-16
•
Expires: 1993-12-14
Abstract
Abstract MOIETY, WHEREIN R represents a divalent hydrocarbon containing one to 12 carbon atoms, and R'' represents hydrogen and a monovalent hydrocarbon containing one to 12 carbon atoms useful in the coating, adhesive, laminating and molding industries. This invention deals with polymerizable lignin derivatives containing at least one
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
C; C08; C08H; C08H6/00; C08G; C08G59/00; C08G59/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
35 words
AN ESTERIFIED LIGNIN OBTAINED BY ESTERIFYING A CARBOXYL GROUP IN A CARBOXYL-CONTAINING LIGNIN WITH AN ALIPHATIC MONOALCOHOL OF 1-16 CARBON ATOMS AND ALSO CONTAINING PER MOLE OF LIGNIN, AT LEAST ONE MOIETY OF THE FORMULA
Claim 2
Dependent Claim
35 words
AN ESTERIFIED LIGNIN OBTAINED BY ESTERIFYING A CARBOXYL GROUP IN A CARBOXYL-CONTAINING LIGNIN WITH AN ALIPHATIC MONOALCOHOL OF 1-16 CARBON ATOMS AND ALSO CONTAINING PER MOLE OF LIGNIN, AT LEAST ONE MOIETY OF THE FORMULA
Claim 3
Dependent Claim
13 words
The product of claim 1 containing at least 1.5 moieties of the formula
Claim 4
Dependent Claim
14 words
The product of claim 1 containing two to eight phenolic ethers of the moiety
Claim 5
Dependent Claim
7 words
The product of claim 1 in which
Claim 6
Dependent Claim
7 words
The product of claim 2 in which
Claim 7
Dependent Claim
7 words
The product of claim 2 in which
Claim 8
Dependent Claim
7 words
The product of claim 3 in which
Claim 9
Dependent Claim
14 words
A thermosetting composition comprising the lignin of claim 1 and an epoxy curing agent.
Claim 10
Dependent Claim
14 words
The product of claim 8 in which the curing agent is an organic amine.
Claim 11
Dependent Claim
13 words
The product of claim 9 in which the amine is an aliphatic polyamine.
Claim 12
Dependent Claim
13 words
The product of claim 9 in which the amine is an aromatic polyamine.
Claim 13
Dependent Claim
13 words
The product of claim 10 in which the amine is a polyamide polyamine.
Claim 14
Dependent Claim
6 words
The thermoset composition of claim 8.
Claim 15
Dependent Claim
16 words
The product of claim 1 containing polymerizable moiety having >C C< linkages attached to the lignin.
Claim 16
Dependent Claim
15 words
The process of preparing the esterified lignin of claim 1 by reaction of lignin with
Claim 17
Dependent Claim
12 words
The process of claim 15 performed in dimethyl sulfoxide as a solvent.
Claim 18
Dependent Claim
15 words
The process of claim 16 performed in the presence of at least one additional phenol.
Claim 19
Dependent Claim
11 words
A composition of matter comprising the modified lignin of claim 1.
Claim 20
Dependent Claim
16 words
The product of claim 8 in which the curing agent is an organic carboxylic acid anhydride.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |