Patent US4489179A successfully refreshed from Google Patents.
US4489179A
Expired / Lapsed
US
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Aqueous polyepoxide emulsions
Assignee: Valspar Corp
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Filing: 1984-01-23
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Granted: 1984-12-18
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Expires: 2004-01-23
Abstract
Abstract A room temperature-curing emulsion coating composition is disclosed in which a solution of normally solid polyepoxide polymer having a 1,2-epoxy equivalency of at least 1.4 and a molecular weight up to about 2000 in inert volatile organic solvent is emulsified into water having dissolved therein a monosecondary amine containing at least one primary amine group which is ketimine blocked by reaction with a ketone which is hindered to prevent reaction with a secondary amino hydrogen atom, this hindered ketone being selected from the group consisting of noncyclic ketones containing one group selected from methyl or ethyl and a second group containing at least four carbon atoms, and cyclic ketones which are substituted in the alpha position. The monosecondary amine is dispersed in the water of the emulsion by at least 50% neutralization of amine functionality with a volatile solubilizing acid either as such or after reaction into a polymer by means of its secondary amino hydrogen atom.
Inventors
- 👤 Anthony J. Tortorello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/0804; C08G18/0809; C08G18/0814; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C09; C09D; C09D175/00; C09D175/04; C09D175/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
A room temperature-curing emulsion coating composition comprising a solution of normally solid polyepoxide polymer having a 1,2-epoxy equivalency of at least 1.4 and a molecular weight up to about 1000 in inert volatile organic solvent emulsified into water having dissolved therein a monosecondary amine containing at least one primary amine group which is ketimine blocked by reaction with a ketone which is hindered to prevent reaction with a secondary amino hydrogen atom, said hindered ketone being selected from the group consisting of noncyclic ketones containing one group selected from methyl or ethyl and a second group containing at least four carbon atoms, and cyclic ketones which are substituted in the alpha position, said monosecondary amine being dispersed in the water of the emulsion by at least 50% neutralization of amine functionality with a volatile solubilizing acid either as such or after reaction into a polymer by means of its secondary amino hydrogen atom.
Claim 2
Dependent Claim
153 words
A room temperature-curing emulsion coating composition comprising a solution of normally solid polyepoxide polymer having a 1,2-epoxy equivalency of at least 1.4 and a molecular weight up to about 1000 in inert volatile organic solvent emulsified into water having dissolved therein a monosecondary amine containing at least one primary amine group which is ketimine blocked by reaction with a ketone which is hindered to prevent reaction with a secondary amino hydrogen atom, said hindered ketone being selected from the group consisting of noncyclic ketones containing one group selected from methyl or ethyl and a second group containing at least four carbon atoms, and cyclic ketones which are substituted in the alpha position, said monosecondary amine being dispersed in the water of the emulsion by at least 50% neutralization of amine functionality with a volatile solubilizing acid either as such or after reaction into a polymer by means of its secondary amino hydrogen atom.
Claim 3
Dependent Claim
15 words
An emulsion as recited in claim 1 in which said amine functionality is 100% neutralized.
Claim 4
Dependent Claim
22 words
An emulsion as recited in claim 2 in which said monosecondary amine is diethylene triamine which is ketimine blocked with methylisobutyl ketone.
Claim 5
Dependent Claim
18 words
An emulsion as recited in claim 3 in which said polyepoxide is a diglycidyl ether of a bisphenol.
Claim 6
Dependent Claim
20 words
An emulsion as recited in claim 1 in which said polyepoxide solution has a solids content of 60% to 80%.
Claim 7
Dependent Claim
18 words
An emulsion as recited in claim 5 in which said polyepoxide solution contains methyl ethyl ketone as solvent.
Claim 8
Dependent Claim
34 words
An emulsion as recited in claim 1 in which said monosecondary amine is prereacted with a polymer having a molecular weight up to about 5000 and reactive groups selected from 1,2-oxirane and isocyanate groups.
Claim 9
Dependent Claim
24 words
An emulsion as recited in claim 7 in which said polymer is a diisocyanate-functional polyurethane obtained by reacting polytetraoxymethylene glycol with excess organic diisocyanate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |