US5021537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyacetoacetate-containing epoxy resin compositions
Assignee: Shell USA Inc
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Filing: 1990-04-27
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Granted: 1991-06-04
•
Expires: 2010-04-27
Abstract
Abstract A coating composition is provided comprising an epoxy resin, a polyacetoacetate, a curing agent for the epoxy resin, and an optional organic solvent. The presence of the polyacetoacetate permits the preparation of a fast-drying high-solids coating formulation.
Inventors
- 👤 Charles J. Stark
- 👤 Rita D. Pietruszka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:46
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
44 words
A composition comprising: (a) a polyglycidyl ether having an average of at least about 1.5 epoxide groups per molecule and (b) a polyacetoacetate having two to four acetoacetate groups per molecule and a molecular weight within the range of about 200 to about 800.
Claim 2
Dependent Claim
44 words
A composition comprising: (a) a polyglycidyl ether having an average of at least about 1.5 epoxide groups per molecule and (b) a polyacetoacetate having two to four acetoacetate groups per molecule and a molecular weight within the range of about 200 to about 800.
Claim 3
Dependent Claim
31 words
The composition of claim 1 in which the polyacetoacetate is present in the composition in an amount of at least 1 weight percent, based on the weight of the polyglycidyl ether.
Claim 4
Dependent Claim
12 words
The composition of claim 2 in which the polyacetoacetate is a trisacetoacetate.
Claim 5
Dependent Claim
12 words
The composition of claim 2 in which the polyacetoacetate is a bisacetoacetate.
Claim 6
Dependent Claim
36 words
The composition of claim 3 in which the trisacetoacetate is present in the composition in an amount within the range of about 2 to about 75 weight percent, based on the weight of the polyglycidyl ether.
Claim 7
Dependent Claim
19 words
The composition of claim 5 in which the trisacetoacetate is selected from trisacetoacetates of trimethylolpropane, trimethylolethane, glycerol and bis(trimethylolpropane).
Claim 8
Dependent Claim
24 words
The composition of claim 2 in which the polyglycidyl ether is a diglycidyl ether of bisphenol-A and the polyacetoacetate is the trisacetoacetate of trimethylolpropane.
Claim 9
Dependent Claim
33 words
The composition of claim 7 in which the trisacetoacetate is present in an amount within the range of about 2 to about 75 weight percent, based on the weight of the diglycidyl ether.
Claim 10
Dependent Claim
33 words
The composition of claim 8 in which the trisacetoacetate is present in an amount within the range of about 4 to about 40 weight percent, based on the weight of the diglycidyl ether.
Claim 11
Dependent Claim
53 words
A composition comprising (a) a polyglycidyl ether having an average of at least about 1.5 epoxide groups per molecule, (b) a polyacetoacetate having two to four acetoacetate groups per molecule and a molecular weight within the range of about 200 to about 800, and (c) an effective amount of an amine curing agent.
Claim 12
Dependent Claim
53 words
A composition comprising (a) a polyglycidyl ether having an average of at least about 1.5 epoxide groups per molecule, (b) a polyacetoacetate having two to four acetoacetate groups per molecule and a molecular weight within the range of about 200 to about 800, and (c) an effective amount of an amine curing agent.
Claim 13
Dependent Claim
36 words
The composition of claim 10 in which the polyacetoacetate is present in the composition in an amount within the range of about 2 to about 75 weight percent, based on the weight of the polyglycidyl ether.
Claim 14
Dependent Claim
12 words
The composition of claim 11 in which the polyacetoacetate is a trisacetoacetate.
Claim 15
Dependent Claim
12 words
The composition of claim 11 in which the polyacetoacetate is a bisacetoacetate.
Claim 16
Dependent Claim
36 words
The composition of claim 12 in which the trisacetoacetate is present in the composition in an amount within the range of about 4 to about 40 weight percent, based on the weight of the polyglycidyl ether.
Claim 17
Dependent Claim
30 words
The composition of claim 10 in which the amine curing agent is selected from the group consisting of polyamine-epoxy adducts, polyamines, cycloaliphatic amines, aromatic amines, polyamides, amidoamines and Mannich bases.
Claim 18
Dependent Claim
26 words
The composition of claim 10 which further comprises (d) up to about 50 weight percent, based on the weight of the composition, of an organic solvent.
Claim 19
Dependent Claim
13 words
The composition of claim 16 in which the organic solvent comprises a ketone.
Claim 20
Dependent Claim
33 words
The composition of claim 16 in which the polyacetoacetate is present in an amount within the range of about 4 to about 40 weight percent, based on the weight of the polyglycidyl ether.
Claim 21
Dependent Claim
22 words
The composition of claim 18 in which the polyacetoacetate is a trisacetoacetate and the polyglycidyl ether is a diglycidyl ether of bisphenol-A.
Claim 22
Dependent Claim
19 words
The composition of claim 19 in which the trisacetoacetate is selected from trisacetoacetates of trimethylolpropane, trimethylolethane, glycerol and bis(trimethylolpropane).
Claim 23
Dependent Claim
14 words
The composition of claim 19 in which the polyacetoacetate is a trisacetoacetate of trimethylolpropane.
Claim 24
Dependent Claim
15 words
The composition of claim 21 in which the amine curing agent is a polyamide resin.
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |