US4312799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble amine resins which are mannich bases
Assignee: DeSoto Inc
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Filing: 1980-06-18
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Granted: 1982-01-26
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Expires: 2000-06-18
Abstract
Abstract An amine resin soluble in water with the aid of an acid is produced by reacting a dihydric phenolic compound with a stoichiometric deficiency of aromatic diepoxide, then reacting the product with formaldehyde to generate methylol groups on the aromatic moieties present in the product, then reacting at least a portion of the methylol groups with monosecondary amine to produce a Mannich base, and then reacting the Mannich base with additional diepoxide in an amount of from 0.5 to 2 epoxy equivalents per epoxy equivalent in the initially used diepoxide.
Inventors
- 👤 Kazys Sekmakas
- 👤 Raj Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/14; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/623; C08L; C08L63/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
An amine resin which is soluble in water with the aid of an acid, produced by reacting a bisphenol with a stoichiometric deficiency of a diglycidyl ether of a bisphenol having a 1,2epoxy equivalency of at least about 1.4 and a molecular weight of about 350 to about 5000, there being from 0.3 to 0.6 equivalents of epoxide in said diglycidyl ether per equivalent of phenolic OH in said bisphenol, then reacting the product with more than 3.5 moles of formaldehyde per mol of starting bishpenol to generate methylol groups, then reacting with a mixture of C 1 -C 8 dialkyl amine and diethanol amine to produce a Mannich base, and then reacting said Mannich base with additional diepoxide in an amount of from 0.5 to 2 epoxy equivalents per epoxy equivalent in the initially used diepoxide.
Claim 2
Dependent Claim
137 words
An amine resin which is soluble in water with the aid of an acid, produced by reacting a bisphenol with a stoichiometric deficiency of a diglycidyl ether of a bisphenol having a 1,2epoxy equivalency of at least about 1.4 and a molecular weight of about 350 to about 5000, there being from 0.3 to 0.6 equivalents of epoxide in said diglycidyl ether per equivalent of phenolic OH in said bisphenol, then reacting the product with more than 3.5 moles of formaldehyde per mol of starting bishpenol to generate methylol groups, then reacting with a mixture of C 1 -C 8 dialkyl amine and diethanol amine to produce a Mannich base, and then reacting said Mannich base with additional diepoxide in an amount of from 0.5 to 2 epoxy equivalents per epoxy equivalent in the initially used diepoxide.
Claim 3
Dependent Claim
27 words
An amine resin as recited in claim 1 in which said diglycidyl ether of a bisphenol has a molecular weight in the range of 350 to 600.
Claim 4
Dependent Claim
23 words
An amine resin as recited in claim 1 in which more than 4 moles of formaldehyde are used per mol of starting bisphenol.
Claim 5
Dependent Claim
37 words
An amine resin as recited in claim 1 in which said Mannich base is reacted with additional diepoxide in an amount of from 1 to 1.5 epoxy equivalents per epoxy equivalent in the initially used diglycidyl ether.
Claim 6
Dependent Claim
29 words
An amine resin as recited in claim 1 dispersed in water with the aid of an acid to provide a bath having a pH in the range of 5-9.
Claim 7
Dependent Claim
28 words
A water dispersion as recited in claim 5 in which an aminoplast or phenoplast resin is present in admixture with said amine resin to enhance the cure thereof.
Claim 8
Dependent Claim
39 words
An amine resin as recited in claim 1 dispersed in water with the aid of an acid to provide a bath having a pH in the range of 6-8.5, said amine resin being in admixture with an aminoplast resin.
References Cited (Backward Citations)
GB1457932A
Cited
DE2357075C3
Cited
US4001155A
Cited
US3994989A
Cited
US4086292A
Cited
US4134932A
Cited
US4189450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |