Patent US4366193A successfully refreshed from Google Patents.
US4366193A
Expired / Lapsed
US
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Catechol-based vapor permeation curable coating compositions
Assignee: Sherwin Williams Co
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Filing: 1981-04-10
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Granted: 1982-12-28
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Expires: 2001-04-10
Abstract
Abstract Disclosed is a coating composition rapidly curable at room temperature in the presence of a vaporous tertiary amine catalyst which comprises catechol or a catechol derivative, a multi-isocyanate curing agent, and preferably a fugitive organic solvent.
Inventors
- 👤 Gary L. Linden
- 👤 Shiraz A. Kathiriya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/04; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1891; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3215
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
76 words
A method for coating a substrate with a coating composition which comprises: (a) applying a film of said coating composition to said substrate, said coating composition comprising an aromatic hydroxyl-functional compound comprising substituted or unsubstituted 1,2-dihydroxybenzene or derivatives thereof and a multi-isocyanate curing agent therefor, at least one of said aromatic hydroxyl-functional compound or said curing agent being polymeric; and (b) exposing said coated substrate to a vaporous tertiary-amine catalyst to rapidly cure said applied film.
Claim 2
Independent Claim
76 words
A method for coating a substrate with a coating composition which comprises: (a) applying a film of said coating composition to said substrate, said coating composition comprising an aromatic hydroxyl-functional compound comprising substituted or unsubstituted 1,2-dihydroxybenzene or derivatives thereof and a multi-isocyanate curing agent therefor, at least one of said aromatic hydroxyl-functional compound or said curing agent being polymeric; and (b) exposing said coated substrate to a vaporous tertiary-amine catalyst to rapidly cure said applied film.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein said curing agent contains between about 10% and 100% of an aromatic multi-isocyanate.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein said exposing of step (b) is at room temperature.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the molar ratio of aromatic hydroxyl groups of said 1,2-dihydroxybenzene to the isocyanate groups of said curing agent is between about 1:1 and 1:2.
Claim 6
Dependent Claim
26 words
The method of claim 1 wherein said aromatic hydroxyl-functional compound comprises a 1,2-dihydroxybenzene derivative represented by: ##STR4## where R 1 is H or an organic group.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein said derivative is represented by: ##STR5## wherein R 2 is a divalent organic group.
Claim 8
Dependent Claim
13 words
The method of claim 6 wherein R 2 is a divalent polyester group.
Claim 9
Dependent Claim
25 words
The method of claim 1 wherein said aromatic-hydroxyl functional compound comprises a 1,2-dihydroxybenzene derivative represented by: ##STR6## where R 3 is a divalent organic group.
Claim 10
Dependent Claim
15 words
The method of claim 1 wherein said coating composition also comprises a volatile organic solvent.
Claim 11
Dependent Claim
63 words
A coating composition rapidly curable at room temperature in the presence of a vaporous tertiary amine catalyst which comprises: (a) an aromatic hydroxyl-functional compound comprising substituted or unsubstituted 1,2-dihydroxybenzene or a derivative thereof; and (b) a multi-isocyanate curing agent containing at least about 10% aromatic multi-isocyanate content by weight, at least one of said aromatic hydroxy-functional compound or said curing agent being polymeric.
Claim 12
Dependent Claim
63 words
A coating composition rapidly curable at room temperature in the presence of a vaporous tertiary amine catalyst which comprises: (a) an aromatic hydroxyl-functional compound comprising substituted or unsubstituted 1,2-dihydroxybenzene or a derivative thereof; and (b) a multi-isocyanate curing agent containing at least about 10% aromatic multi-isocyanate content by weight, at least one of said aromatic hydroxy-functional compound or said curing agent being polymeric.
Claim 13
Dependent Claim
27 words
The coating composition of claim 10 wherein said aromatic hydroxyl-functional compound comprises a 1,2-dihydroxybenzene derivative represented by: ##STR7## where R 1 is H or an organic group.
Claim 14
Dependent Claim
21 words
The coating composition of claim 11 wherein said derivative is represented by: ##STR8## where R 2 is a divalent organic group.
Claim 15
Dependent Claim
14 words
The coating composition of claim 12 wherein R 2 is a divalent polyester group.
Claim 16
Dependent Claim
30 words
The coating composition of claim 10 wherein said multi-isocyanate curing agent contains between about 10% and 80% of an aromatic multi-isocyanate and between 90% and 20% of an aliphatic multi-isocyanate.
Claim 17
Dependent Claim
31 words
The coating composition of claim 10 wherein the molar ratio of aromatic hydroxyl groups of said compound to the isocyanate groups of said curing agent is between about 1:1 and 1:2.
Claim 18
Dependent Claim
24 words
The coating composition of claim 10 which has a pot life of at least about 4 hours in an open pot at room temperature.
Claim 19
Dependent Claim
26 words
The coating composition of claim 10 wherein said aromatic hydroxyl-functional compound comprises a 1,2-dihydroxybenzene derivative represented by: ##STR9## where R 3 is a divalent organic group.
Claim 20
Dependent Claim
13 words
The coating composition of claim 10 which additionally comprises (c) an organic solvent.
References Cited (Backward Citations)
US2967117A
Cited
US2657151A
Cited
US3409579A
Cited
US3429848A
Cited
GB1351881A
Cited
US3789044A
Cited
US3676392A
Cited
US3836491A
Cited
GB1369351A
Cited
US3822226A
Cited
US3874898A
Cited
US3933727A
Cited
US4179427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |