Patent US4636541A successfully refreshed from Google Patents.
US4636541A
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Water-dispersible cationic vinylized epoxy resins
Assignee: Dow Chemical Co
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Filing: 1985-03-28
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Granted: 1987-01-13
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Expires: 2005-03-28
Abstract
Abstract Novel water-compatible compositions are those of at least one vinyl ester resin whose backbone is linear or substantially linear and consists essentially of at least one terminal olefinically unsaturated group and at least one terminal pyridinium group covalently bonded through the pyridinium nitrogen atom. These novel compositions are useful adhesive and coating compositions which find particular utility in cathodic electrodeposition. The compositions are prepared, for example, by reacting a linear or substantially linear epoxy resin with an unsaturated monocarboxylic acid and then with a pyridine compound in the presence of sufficient amount of a Bronsted acid and water to stabilize the pyridinium salt thus formed.
Inventors
- 👤 Michael G. Stevens
- 👤 Rhetta Q. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:54
CPC Classifications
C; C09; C09D; C09D163/00; C09D163/10; C08; C08G; C08G59/00; C08G59/14; C08G59/1494
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
32 words
A water-compatible composition comprising at least one vinyl ester resin comprising at least one terminal olefinically unsaturated group and at least one terminal pyridinium group covalently bonded through the pyridinium nitrogen atom.
Claim 2
Dependent Claim
32 words
A water-compatible composition comprising at least one vinyl ester resin comprising at least one terminal olefinically unsaturated group and at least one terminal pyridinium group covalently bonded through the pyridinium nitrogen atom.
Claim 3
Dependent Claim
16 words
The composition defined by claim 1, which additionally comprises at least one other water-insoluble resinous compound.
Claim 4
Dependent Claim
16 words
The composition defined by claim 2 wherein said other water-insoluble compound is a vinyl ester resin.
Claim 5
Dependent Claim
37 words
The composition defined by claim 1, wherein said terminal pyridinium group corresponds to the formula ##STR4## wherein R 9 and R 10 are each independently hydrogen, halo, hydrocarbyl, or inertly-substituted hydrocarbyl; and A.sup.θ is a compatible anion.
Claim 6
Dependent Claim
25 words
The composition defined by claim 4 wherein R 9 is hydrogen or a substituent in the 3- or 4-ring position and R 10 is hydrogen.
Claim 7
Dependent Claim
11 words
The composition defined by claim 5 wherein R 9 is carboxamide.
Claim 8
Dependent Claim
27 words
The composition defined by claim 4 wherein A.sup.θ is chloride, bromide, bisulfate, bicarbonate, nitrate dihydrogen phosphate, lactate or an alkanoate of from 1 to 4 carbon atoms.
Claim 9
Dependent Claim
19 words
The composition defined by claim 1 wherein said vinyl ester resin has an epoxy equivalent weight greater than 500.
Claim 10
Dependent Claim
20 words
The composition of claim 8 wherein said vinyl ester resin has been partially reacted with a liquid carboxyterminated polydiene rubber.
Claim 11
Dependent Claim
16 words
The composition of claim 9 wherein said polydiene rubber is a copolymer of acrylonitrile and butadiene.
Claim 12
Dependent Claim
10 words
An aqueous dispersion comprising the composition defined by claim 1.
Claim 13
Dependent Claim
11 words
An aqueous dispersion comprising the composition as defined by claim 2.
Claim 14
Dependent Claim
15 words
A coating composition made from a dispersion of claim 12 and a free radical initiator.
Claim 15
Dependent Claim
12 words
The composition of claim 13 wherein said free radical initiator is tertiary-butyl-perbenzoate.
Claim 16
Dependent Claim
50 words
A process for preparing a water-compatible vinyl ester resin wherein an unsaturated monocarboxylic acid is reacted with an excess of a polyepoxide and that partially esterified polyepoxide reacted with a pyridine compound in the presence of sufficient amounts of a Bronsted acid and water to stabilize the so-formed pyridinium salt.
Claim 17
Dependent Claim
50 words
A process for preparing a water-compatible vinyl ester resin wherein an unsaturated monocarboxylic acid is reacted with an excess of a polyepoxide and that partially esterified polyepoxide reacted with a pyridine compound in the presence of sufficient amounts of a Bronsted acid and water to stabilize the so-formed pyridinium salt.
Claim 18
Dependent Claim
25 words
The process of claim 15 wherein the esterified pyridinium salt is blended with a vinyl ester resin in amounts that the blend is water compatible.
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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) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |