Patent US3965075A successfully refreshed from Google Patents.
US3965075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyzed process for imide-alcohol condensation
Assignee: Monsanto Co
•
Filing: 1974-07-22
•
Granted: 1976-06-22
•
Expires: 1994-07-22
Abstract
Abstract A catalyzed process for the preparation of monomeric and/or polymeric compounds such as esters, polyesters, ester-amides, and polyester-polyamides which result from the reaction of an imide and an alcohol in the presence of an amine or Group IVA, IB, IVB, VB, VIB, and VIII organometal compound, imide-alcohol condensation catalyst.
Inventors
- 👤 James W. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:11
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A catalyzed imide-alcohol condensation process for the preparation of polymeric compounds of polyester-polyamides comprising: contacting alcohols having one or more hydroxyl groups attached to an aliphatic carbon and acyl lactams, said contacting being in amounts of from about 10 to about 200 mole percent of the alcohol, in the presence of a catalyst selected from at least one of tertiary amines and a Group IVA, IB, IVB, VB, VIB, VII organometal compound selected from the group consisting of metal alkyls, metal phenols, metal amides, alkoxides, and glycoxides.
Claim 2
Dependent Claim
87 words
A catalyzed imide-alcohol condensation process for the preparation of polymeric compounds of polyester-polyamides comprising: contacting alcohols having one or more hydroxyl groups attached to an aliphatic carbon and acyl lactams, said contacting being in amounts of from about 10 to about 200 mole percent of the alcohol, in the presence of a catalyst selected from at least one of tertiary amines and a Group IVA, IB, IVB, VB, VIB, VII organometal compound selected from the group consisting of metal alkyls, metal phenols, metal amides, alkoxides, and glycoxides.
Claim 3
Dependent Claim
17 words
A process according to claim 1 wherein the catalyst is comprised of a Group IVA organometal compound.
Claim 4
Dependent Claim
13 words
A process according to claim 2 wherein the Group IVA metal is tin.
Claim 5
Dependent Claim
22 words
A process according to claim 1 wherein the amine is selected from the group consisting of triethylenediamine, N-ethylethylenimine, tetramethylguanidine, N-ethylmorpholine, and triethylamine.
Claim 6
Dependent Claim
22 words
A process according to claim 1 wherein the catalyzed imide-alcohol condensation occurs at a temperature of from about -20°C to about 230°C.
Claim 7
Dependent Claim
24 words
A process according to claim 1 wherein the acyl lactam is comprised of isophthaloyl bis-caprolactam and the alcohol is comprised of a polymeric polyol.
Claim 8
Dependent Claim
24 words
A process according to claim 1 wherein the acyl lactam is comprised of terephthaloyl bis-caprolactam and the alcohol is comprised of a polymeric polyol.
Claim 9
Dependent Claim
12 words
A process according to claim 6 wherein the catalyst is stannous octoate.
Claim 10
Dependent Claim
11 words
A process according to claim 6 wherein the catalyst is triethylenediamine.
Claim 11
Dependent Claim
13 words
A process according to claim 6 wherein the catalyst is dibutyl tin dilaurate.
References Cited (Backward Citations)
US2682526A
Cited
US3394156A
Cited
US3308099A
Cited
US3366608A
Cited
US3636135A
Cited
US3660356A
Cited
US3862262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |