Patent US4353819A successfully refreshed from Google Patents.
US4353819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast curing polyepoxide coating compositions with good pot life
Assignee: Dow Chemical Co
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Filing: 1981-03-13
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Granted: 1982-10-12
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Expires: 2001-03-13
Abstract
Abstract A nonvolatile amine, which is at least partially neutralized with a mixture of hydrochloric acid and either hydrobromic or hydriodic acid, dissolved in a solvent, is mixed with a volatile ketone and a polyglycidyl ether or ester to result in a thermosettable resin composition having extended pot life in bulk and a fast cure rate in thin sections.
Inventors
- 👤 Russell T. McFadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
C; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
68 words
A resin composition having extended pot life in bulk form and a fast cure rate in thin sections comprising a mixture of (A) a nonvolatile amine dissolved in a solvent having no groups reactive with an amine, said nonvolatile amine being at least partially neutralized with a mixture of hydrobromic acid or hydriodic acid and hydrochloric acid, (B) a volatile ketone, and (C) a polyglycidyl ether or ester.
Claim 2
Dependent Claim
68 words
A resin composition having extended pot life in bulk form and a fast cure rate in thin sections comprising a mixture of (A) a nonvolatile amine dissolved in a solvent having no groups reactive with an amine, said nonvolatile amine being at least partially neutralized with a mixture of hydrobromic acid or hydriodic acid and hydrochloric acid, (B) a volatile ketone, and (C) a polyglycidyl ether or ester.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein said nonvolatile amine is a vinyl interpolymer containing polyaminoalkyl carboxylate groups.
Claim 4
Dependent Claim
44 words
The composition of claim 2 wherein said carboxylate groups have the formula ##STR2## wherein R 1 and R 2 are independently selected from hydrogen or alkyl radicals of 1 to 4 carbon atoms and the average value of n is from 1.0 to 2.5.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein said nonvolatile amine is bis(2-aminoethyl)ether of bisphenol A.
Claim 6
Dependent Claim
26 words
The composition of claim 1 wherein the nonvolatile amine component has from 20 percent to 100 percent of the amine groups acidified with the acid mixture.
Claim 7
Dependent Claim
27 words
The composition of claim 1 wherein the mixture of acids contains less than 30 mole percent hydrochloric acid with the remainder of hydrobromic acid or hydriodic acid.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein said nonvolatile amine is dissolved in a lower alkyl ether of a lower alkylene glycol.
Claim 9
Dependent Claim
17 words
The composition of claim 7 wherein said lower alkyl ether is the ethyl ether of ethylene glycol.
Claim 10
Dependent Claim
27 words
The composition of claim 1 wherein said nonvolatile amine is dissolved in a cosolvent of a lower alkyl ether of a lower alkylene glycol and an alkanol.
Claim 11
Dependent Claim
10 words
The composition of claim 9 wherein said alkanol is n-butanol.
Claim 12
Dependent Claim
13 words
The composition of claim 1 wherein said volatile ketone is methyl ethyl ketone.
Claim 13
Dependent Claim
13 words
The composition of claim 1 wherein said volatile ketone is methyl isobutyl ketone.
Claim 14
Dependent Claim
11 words
The composition of claim 1 wherein said volatile ketone is acetone.
Claim 15
Dependent Claim
11 words
The composition of claim 1 wherein said volatile ketone is cyclohexanone.
Claim 16
Dependent Claim
11 words
The composition of claim 1 wherein said volatile ketone is acetophenone.
Claim 17
Dependent Claim
20 words
The composition of claim 1 wherein said volatile ketone is present in at least equivalent amounts to said nonvolatile amine.
Claim 18
Dependent Claim
15 words
The composition of claim 1 wherein said polyepoxide is a diglycidyl ether of bisphenol A.
Claim 19
Dependent Claim
74 words
A process for coating a substrate wherein an organic solvent solution of a nonvolatile amine salt of an amine having primary, secondary or primary and secondary amine groups neutralized with a mixture of hydrobromic or hydriodic acid with hydrochloric acid is blended with a solution of a volatile ketone and a polyepoxide, the so-formed blend deposited as a coating on said substrate, and the solvent and ketone evaporated and the polyepoxide caused to cure.
Claim 20
Dependent Claim
74 words
A process for coating a substrate wherein an organic solvent solution of a nonvolatile amine salt of an amine having primary, secondary or primary and secondary amine groups neutralized with a mixture of hydrobromic or hydriodic acid with hydrochloric acid is blended with a solution of a volatile ketone and a polyepoxide, the so-formed blend deposited as a coating on said substrate, and the solvent and ketone evaporated and the polyepoxide caused to cure.
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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) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |