US4608313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Advanced epoxy resins crosslinked with polyisocyanates
Assignee: Dow Chemical Co
•
Filing: 1985-06-26
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Granted: 1986-08-26
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Expires: 2005-06-26
Abstract
Abstract Coatings are prepared from epoxy resin compositions prepared by reacting an epoxy resin composition containing an aliphatic diepoxide with a dihydric phenol. These coatings are useful as anti-chip coatings for automobiles and as coil coatings.
Inventors
- 👤 Richard A. Hickner
- 👤 Kevin A. Owens
- 👤 Gwendolyn M. Grays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08G18/581; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C09; C09D; C09D163/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
188 words
A coating composition comprising (I) an advanced epoxy resin composition prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one aliphatic diepoxide and (2) optionally at least one aromatic diepoxide; with (B) at least one compound having two aromatic hydroxyl groups per molecule and an average molecular weight of at least about 188; wherein components (A-1) and (A-2) are employed in quantities such that from about 10 to about 100 percent of the epoxide equivalents contained in component (A) are 90 contributed by component (A-1); from about 0 to about percent of such epoxide equivalents are contributed by component (A-2) and wherein components (A) and (B) are present in a quantity which provides an advanced epoxy resin having an EEW of from about 350 to about 15,000; (II) a curing quantity of at least one curing agent for component (I) selected from the group consisting of blocked and unblocked polyisocyanates; and (III) at least one solvent in a sufficient quantity such that the coating composition including components (I), (II), (III) and any other desirable component has a suitable application viscosity.
Claim 2
Dependent Claim
188 words
A coating composition comprising (I) an advanced epoxy resin composition prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one aliphatic diepoxide and (2) optionally at least one aromatic diepoxide; with (B) at least one compound having two aromatic hydroxyl groups per molecule and an average molecular weight of at least about 188; wherein components (A-1) and (A-2) are employed in quantities such that from about 10 to about 100 percent of the epoxide equivalents contained in component (A) are 90 contributed by component (A-1); from about 0 to about percent of such epoxide equivalents are contributed by component (A-2) and wherein components (A) and (B) are present in a quantity which provides an advanced epoxy resin having an EEW of from about 350 to about 15,000; (II) a curing quantity of at least one curing agent for component (I) selected from the group consisting of blocked and unblocked polyisocyanates; and (III) at least one solvent in a sufficient quantity such that the coating composition including components (I), (II), (III) and any other desirable component has a suitable application viscosity.
Claim 3
Dependent Claim
62 words
A coating composition of claim 1 wherein (i) components (I-A) and (I-B) are present in quantities which provide an advanced epoxy resin having an EEW of from about 500 to about 7500 and (ii) component (I-A-1) is present in quantities such that from about 50 to about 100 percent of the epoxide equivalents contained in component (I-A) are contributed by component (I-A-1).
Claim 4
Dependent Claim
62 words
A coating composition of claim 2 wherein (i) components (I-A) and (I-B) are present in quantities which provide an advanced epoxy resin having an EEW of from about 500 to about 6000 and (ii) component (I-A-1) is present in quantities such that from about 75 to about 100 percent of the epoxide equivalents contained in component (I-A) are contributed by component (I-A-1).
Claim 5
Dependent Claim
57 words
A coating composition of claim 3 wherein (a) component (I-A-1) is a diglycidyl ether of a polyoxypropylene glycol said polyoxypropylene glycol having an average molecular weight of from about 200 to about 400 or dipropylene glycol or a mixture thereof; (b) component (I-A-2) is a diglycidyl ether of a bisphenol and (c) component (I-B) is a bisphenol.
Claim 6
Dependent Claim
40 words
A coating composition of claim 4 wherein (a) component (I-A-1) has an average epoxide equivalent weight of from about 120 to about 260; (b) component (I-A-2) is a diglycidy ether of bisphenol A; and (c) component (B) is bisphenol A.
Claim 7
Dependent Claim
14 words
A coating composition of claim 5 wherein said curing agent is a blocked polyisocyanate.
Claim 8
Dependent Claim
15 words
A coating composition of claim 6 wherein said blocked polyisocyanate is a ketoxime blocked isocyanate.
Claim 9
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 1 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 10
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 2 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 11
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 3 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 12
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 4 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 13
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 5 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 14
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 6 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 15
Dependent Claim
38 words
An article comprising a substrate having (1) a first or primer coating layer, (2) an anti-chip coating comprising a composition of claim 7 and (3) one or more subsequent coatings having a composition different from (1) and (2).
Claim 16
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 1 and (2) one or more subsequent coatings having a composition different from (1).
Claim 17
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 2 and (2) one or more subsequent coatings having a composition different from (1).
Claim 18
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 3 and (2) one or more subsequent coatings having a composition different from (1).
Claim 19
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 4 and (2) one or more subsequent coatings having a composition different from (1).
Claim 20
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 5 and (2) one or more subsequent coatings having a composition different from (1).
Claim 21
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 6 and (2) one or more subsequent coatings having a composition different from (1).
Claim 22
Dependent Claim
33 words
An article comprising a substrate having (1) a first or primer coating layer comprising a coating composition of claim 7 and (2) one or more subsequent coatings having a composition different from (1).
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |