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US4675359A
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Process for producing water-soluble acid amide compounds
Assignee: Zeon Corp
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Filing: 1984-10-05
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Granted: 1987-06-23
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Expires: 2004-10-05
Abstract
Abstract A process for producing a water-soluble acid amide compound which comprises heating (a) a carboxylic acid compound having at least one carboxyl group in the molecule and being incapable of forming a 5-membered cyclic acid imide linkage and (b) a primary or secondary amine compound in an aqueous medium to introduce an acid amide linkage into the molecule.
Inventors
- 👤 Hiromitsu Kadono
- 👤 Tadao Natsuume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A process for producing a water-soluble acid amide compound which comprises heating (a) a water-soluble carboxylic acid compound having at least one carboxyl group in the molecule and being incapable of forming a 5-membered cyclic acid imide linkage under the reaction conditions and which is selected from the group consisting of a polymer of an alpha, beta-unsaturated mono-carboxylic acid; a copolymer of an alpha, beta-unsaturated monocarboxylic acid, and a monomer copolymerizable therewith; a higher fatty acid; and salts of any of the foregoing, and (b) a water-soluble primary or secondary amine compound having a hydrophilic polar group, at a reaction temperature of from 100° to 220° C. and at a pH value of from 4 to 12, in an aqueous medium to introduce an acid amide linkage into the molecule.
Claim 2
Dependent Claim
130 words
A process for producing a water-soluble acid amide compound which comprises heating (a) a water-soluble carboxylic acid compound having at least one carboxyl group in the molecule and being incapable of forming a 5-membered cyclic acid imide linkage under the reaction conditions and which is selected from the group consisting of a polymer of an alpha, beta-unsaturated mono-carboxylic acid; a copolymer of an alpha, beta-unsaturated monocarboxylic acid, and a monomer copolymerizable therewith; a higher fatty acid; and salts of any of the foregoing, and (b) a water-soluble primary or secondary amine compound having a hydrophilic polar group, at a reaction temperature of from 100° to 220° C. and at a pH value of from 4 to 12, in an aqueous medium to introduce an acid amide linkage into the molecule.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein the carboxylic acid compound contains at least 8 carbon atoms and has a number average molecular weight of 300 to 3,000,000.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the carboxylic acid compound is said polymer of an alpha,beta-unsaturated monocarboxylic acid compound.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein the carboxylic acid compound is said copolymer of an alpha,beta-unsaturated monocarboxylic acid and a comonomer.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein the carboxylic acid compound is said adduct of an unsaturated polymer, an alphaolefin or an unsaturated natural oil with an alpha,beta-unsaturated monocarboxylic acid.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the carboxylic acid compound is said higher fatty acid or its salt.
Claim 8
Dependent Claim
36 words
The process of claim 1 wherein the amine compound is an amino group-containing sulfonic acid or its salt, an amino group-containing sulfuric acid monoester of its salt, or an amino group-containing phosphonic acid or its salt.
Claim 9
Dependent Claim
32 words
The process of claim 1 wherein the amine compound is used in an amount of 0.05 to 1.5 moles per mole of the alpha,beta-unsaturated monocarboxylic acid unit in the carboxylic acid compound.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the amine compound is added to an aqueous solution of the carboxylic acid compound and the mixture is heated.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |