US3922254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for imide-alcohol condensation
Assignee: Monsanto Co
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Filing: 1974-07-22
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Granted: 1975-11-25
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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 a Group IA, IIA, IIB and/or IIIA metal or metal compound, imide-alcohol condensation catalyst.
Inventors
- 👤 Ross Melvin Hedrick
- 👤 James D Gabbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:25
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
48 words
A CATALYZED IMIDE-ALCOHOL CONDENSATION PROCESS FOR THE PREPARATION OF POLYMERIC COMPOUNDS OF POLYESTER-POLYAMIDE COMPRISING: CONTACTING ALCOHOLS HAVING ONE OR MORE HYDROXYL GROUPS ATTACHED TO AN ALIPHATIC CARBON, ACYL LACTAMS IN THE PRESENCE OF AT LEAST ONE OF A GROUP IA, IIA, IIB, AND IIIA METAL OF METAL COMPOUND.
Claim 2
Dependent Claim
48 words
A CATALYZED IMIDE-ALCOHOL CONDENSATION PROCESS FOR THE PREPARATION OF POLYMERIC COMPOUNDS OF POLYESTER-POLYAMIDE COMPRISING: CONTACTING ALCOHOLS HAVING ONE OR MORE HYDROXYL GROUPS ATTACHED TO AN ALIPHATIC CARBON, ACYL LACTAMS IN THE PRESENCE OF AT LEAST ONE OF A GROUP IA, IIA, IIB, AND IIIA METAL OF METAL COMPOUND.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the metal compound is comprised of at least one of a lactam salt, a halolactam salt, and an alkoxide.
Claim 4
Dependent Claim
27 words
A process according to claim 1 wherein the metal is selected from the group consisting of sodium, potasium, lithium, magnesium, calcium, strontium, barium, zinc, cadium, and aluminum.
Claim 5
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 6
Dependent Claim
26 words
A process according to claim 1 wherein the acyl lactam is present in an amount of from 10 to about 200 mole percent of the alcohol.
Claim 7
Dependent Claim
47 words
A process according to claim 1 wherein the catalyzed imide-alcohol condensation occurs in a lactam reaction media and the catalysts are selected from the group consisting of zinc caprolactam, magnesium caprolactam, calcium caprolactam, aluminum bis (bromomethyl), caprolactam aluminum chloride, dicaprolactam aluminum chloride, aluminum tri-caprolactam, and bromomagnesium caprolactam.
Claim 8
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 9
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 10
Dependent Claim
12 words
A process according to claim 7 wherein the catalyst is bromomagnesium caprolactam.
Claim 11
Dependent Claim
12 words
A process according to claim 8 wherein the catalyst is bromomagnesium caprolactam.
Claim 12
Dependent Claim
12 words
A process according to claim 7 wherein the catalyst is magnesium dicaprolactam.
Claim 13
Dependent Claim
12 words
A process according to claim 8 wherein the catalyst is magnesium dicaprolactam.
References Cited (Backward Citations)
US2682526A
Cited
US3366608A
Cited
US3526604A
Cited
US3631006A
Cited
US3740379A
Cited
US3772253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |