US4692382A
Expired / Lapsed
US
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Elastomeric coating compositions
Assignee: PPG Industries Inc
•
Filing: 1986-07-21
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Granted: 1987-09-08
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Expires: 2006-07-21
Abstract
Abstract A coating composition has as its principal constituents (i) an isocyanate terminated urethane containing material; and (ii) a phosphatized polyepoxide essentially free of oxirane groups. The coating composition has excellent elongation and is particularly useful as a coating applied directly to metal. The coating composition is also useful as a primer in the preparation of multilayer coatings having good flexibility.
Inventors
- 👤 Robert J. Schmitt
- 👤 Leon A. Perez
- 👤 Robert A. Montague
- 👤 Marvin T. Tetenbaum
- 👤 Ellor J. Van Buskirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/42; C08G18/44; C08G18/64; C08G18/6461; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31529; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
21 words
A coating composition comprising: (i) an isocyanate terminated urethane containing material; and (ii) a phosphatized polyepoxide essentially free of oxirane groups.
Claim 2
Dependent Claim
21 words
A coating composition comprising: (i) an isocyanate terminated urethane containing material; and (ii) a phosphatized polyepoxide essentially free of oxirane groups.
Claim 3
Dependent Claim
44 words
The coating composition of claim 1 wherein the phosphatized polyepoxide essentially free of oxirane groups is present as an isocyanate terminated prepolymer formed by reacting at least a portion of the hydroxyl groups of polyepoxide essentially free of oxirane groups with an organic polyisocyanate.
Claim 4
Dependent Claim
16 words
The coating composition of claim 2 wherein there is additionally present an active hydrogen containing material.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein the isocyanate terminated urethane containing material is prepared from a polyol component and an organic polyisocyanate.
Claim 6
Dependent Claim
19 words
The coating composition of claim 1 wherein the isocyanate groups of the isocyanate terminated urethane containing material are blocked.
Claim 7
Dependent Claim
27 words
The coating composition of claim 4 wherein the polyol component which is utilized to prepare the isocyanate terminated urethane containing material is comprised of a polycarbonate polyol.
Claim 8
Dependent Claim
16 words
The coating composition of claim 6 having an elongation of at least 50 percent when cured.
Claim 9
Dependent Claim
24 words
The coating composition of claim 6 wherein the polyol component is a mixture of polymeric polycarbonate diol and at least one other monomeric diol.
Claim 10
Dependent Claim
26 words
The coating composition of claim 6 wherein the polycarbonate polyol has a number average molecular weight within the range of from about 150 to about 10,000.
Claim 11
Dependent Claim
17 words
The coating composition of claim 8 wherein the polycarbonate diol is prepared from 1,6-hexanediol and ethylene carbonate.
Claim 12
Dependent Claim
13 words
The coating composition of claim 1 wherein the organic polyisocyanate is a diisocyanate.
Claim 13
Dependent Claim
12 words
The coating composition of claim 11 wherein the diisocyanate is isophorone diisocyanate.
Claim 14
Dependent Claim
21 words
The coating composition of claim 5 wherein the isocyanate groups of the isocyanate terminated urethane containing material are blocked with epsilon-caprolactam.
Claim 15
Dependent Claim
29 words
The coating composition of claim 1 wherein the phosphatized polyepoxide essentially free of oxirane groups has a molecular weight within the range of from about 200 to about 100,000.
Claim 16
Dependent Claim
33 words
The coating composition of claim 1 wherein the ratio of hydroxyl equivalents in the phosphatized polyepoxide to the isocyanate equivalents in the isocyanate terminated urethane containing material ranges from about 0.5:1.0 to 1.5:1.0.
Claim 17
Dependent Claim
23 words
The coating composition of claim 7 wherein the composition has an elongation ranging from about 200 percent to about 300 percent when cured.
Claim 18
Independent Claim
80 words
A method of providing a substrate with a multilayer coating comprising: (a) applying a flexible primer coating composition to a substrate, said coating composition comprising (i) an isocyanate terminated urethane containing material; and (ii) a phosphatized polyepoxide essentially free of oxirane groups. (b) applying at least one pigmented coating composition to the coated substrate of (a); (c) at least partially curing the coated substrate of step (b); said multilayer coating having an elongation of at least 50 percent when cured.
Claim 19
Independent Claim
80 words
A method of providing a substrate with a multilayer coating comprising: (a) applying a flexible primer coating composition to a substrate, said coating composition comprising (i) an isocyanate terminated urethane containing material; and (ii) a phosphatized polyepoxide essentially free of oxirane groups. (b) applying at least one pigmented coating composition to the coated substrate of (a); (c) at least partially curing the coated substrate of step (b); said multilayer coating having an elongation of at least 50 percent when cured.
Claim 20
Dependent Claim
31 words
The method of claim 17 additionally comprising the step of applying a clear coating composition to the coated substrate of step (b), prior to at least partially curing the coated substrate.
Claim 21
Dependent Claim
17 words
The method of claim 17 wherein the pigmented coating composition of step (b) comprises a fluorocarbon polymer.
Claim 22
Dependent Claim
29 words
The method of claim 19 wherein the pigmented coating composition additionally comprises an adjuvant polymer different from the fluorocarbon polymer and adapted to modify properties of the fluorocarbon polymer.
Claim 23
Dependent Claim
13 words
The method of claim 20 wherein the adjuvant polymer is an acrylic polymer.
Claim 24
Dependent Claim
14 words
The method of claim 17 wherein the clear coating composition comprises a fluorocarbon polymer.
Claim 25
Dependent Claim
30 words
The method of claim 22 wherein the clear coating composition additionally comprises an adjuvant polymer different from the fluorocarbon polymer and adapted to modify the properties of the fluorocarbon polymer.
Claim 26
Dependent Claim
13 words
The method of claim 23 wherein the adjuvant polymer is an acrylic polymer.
Claim 27
Dependent Claim
24 words
The method of claim 17 wherein the dry film thickness of the primer coating composition ranges from about 0.2 mil to about 2.0 mil.
Claim 28
Dependent Claim
10 words
A coated article produced by the method of claim 17.
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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) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |