US4755565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic ammoniation
Assignee: EIDP Inc
•
Filing: 1986-11-10
•
Granted: 1988-07-05
•
Expires: 2006-11-10
Abstract
Abstract A process for the ammoniation of acrylic resins containing glycidyl methacrylate units that results in high amine functionality.
Inventors
- 👤 Larry G. Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:38
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
In the process for reacting an acrylic polymer having glycidyl functionality with amine, the improvement wherein the acrylic polymer has a number average molecular weight about from 1,000 to 20,000 and about from 10 to 40 weight percent glycidyl methacrylate units; the acrylic polymer is reacted with an amine of the general formula RNH 2 wherein R is alkyl of 1 to 8 carbon atoms; the acrylic polymer and the amine are reacted at a temperature of about from 25° to 140° C. in an organic liquid which is a solvent for the acrylic polymer, the amine and the resulting amine-substituted polymer formed; the organic liquid is present in an amount which provides a polymer concentration of about from 20 to 70% by weight before amine addition; the amine is present to provide a mole ratio of amine to epoxy units of about from 5:1 to 50:1; and the reaction pressure is about from 1 to 30 atmospheres, to provide a polymer having about from 5 to 20 amine groups per polymer chain.
Claim 2
Dependent Claim
173 words
In the process for reacting an acrylic polymer having glycidyl functionality with amine, the improvement wherein the acrylic polymer has a number average molecular weight about from 1,000 to 20,000 and about from 10 to 40 weight percent glycidyl methacrylate units; the acrylic polymer is reacted with an amine of the general formula RNH 2 wherein R is alkyl of 1 to 8 carbon atoms; the acrylic polymer and the amine are reacted at a temperature of about from 25° to 140° C. in an organic liquid which is a solvent for the acrylic polymer, the amine and the resulting amine-substituted polymer formed; the organic liquid is present in an amount which provides a polymer concentration of about from 20 to 70% by weight before amine addition; the amine is present to provide a mole ratio of amine to epoxy units of about from 5:1 to 50:1; and the reaction pressure is about from 1 to 30 atmospheres, to provide a polymer having about from 5 to 20 amine groups per polymer chain.
Claim 3
Dependent Claim
20 words
A process of claim 1 wherein the acrylic polymer has an average molecular weight of about from 4,000 to 12,000.
Claim 4
Dependent Claim
11 words
A process of claim 1 wherein the amine is methyl amine.
Claim 5
Dependent Claim
15 words
A process of claim 1 wherein the organic liquid comprises at least about 50% toluene.
Claim 6
Dependent Claim
16 words
A process of claim 4 wherein the organic liquid further comprises at least about 10% methanol.
Claim 7
Dependent Claim
21 words
A process of claim 1 wherein the reaction is carried out at a temperature of about from 60° to 80° C.
Claim 8
Dependent Claim
21 words
A process of claim 1 wherein the reaction of carried out at a pressure of about from 1 to 7 atmospheres.
Claim 9
Dependent Claim
20 words
A process of claim 7 wherein the reaction is carried out at a pressure of at least about 3 atmospheres.
Claim 10
Dependent Claim
18 words
A process of claim 4 wherein the ratio of amine to epoxy is about from 5:1 to 15:1.
Claim 11
Dependent Claim
23 words
A process of claim 1 wherein the acrylic polymer comprises about from 10 to 20 weight percent of units derived from glycidyl methacrylate.
References Cited (Backward Citations)
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Cited
GB1532245A
Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |