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US4501854A
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Aminoplast curable compositions containing disulfonic acid esters as latent acid catalysts
Assignee: PPG Industries Inc
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Filing: 1983-11-14
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Granted: 1985-02-26
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Expires: 2003-11-14
Abstract
Abstract An improved curable composition capable of acid catalyzed crosslinking is composed of an active hydrogen-containing resin, a curing agent and a sulfonate as latent acid catalyst. The catalyst is represented by the following structural formula: ##STR1## wherein: Z is a radical independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, C 6 to C 18 aryl, halogen, alkoxy, hydroxyl, and aryloxy; R is independently selected from hydrogen, C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, and C 6 to C 18 aryl; R 1 is independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, hydroxyalkyl, and hydroxycycloalkyl; y is an integer from 0 to 4, w is an integer from 0 to 2, and x is an integer from 1 to 3, with the proviso that when w is 0, y is an integer from 1 to 4 and x is an integer from 2 to 3 and when y is 0, w is an integer from 1 to 2 and x is an integer from 1 to 3.
Inventors
- 👤 Debra L. Singer
- 👤 Gregory J. McCollum
- 👤 Rostyslaw Dowbenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:17
CPC Classifications
C; C07; C07C; C07C309/00; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
204 words
In a curable composition capable of acid catalyzed crosslinking, comprising an active hydrogen-containing resin, a curing agent present externally and/or internally as a part of the active hydrogen-containing resin, and an acid catayst, wherein the improvement comprises using as the acid catalyst a catalytic amount of a sulfonate represented by the following structural formula: ##STR4## wherein: Z is a radical independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, C 6 to C 18 aryl, halogen, alkoxy, hydroxyl, and aryloxy; R is independently selected from hydrogen, C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, and C 6 to C 18 aryl; R 1 is independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, hydroxyalkyl, and hydroxycycloalkyl; y is an integer from 0 to 4, w is an integer from 0 to 2, and x is an integer from 1 to 3, with the proviso that when w is 0, y is an integer from 1 to 4 and x is an integer from 2 to 3 and when y is 0, w is an integer from 1 to 2 and x is an integer from 1 to 3.
Claim 2
Dependent Claim
204 words
In a curable composition capable of acid catalyzed crosslinking, comprising an active hydrogen-containing resin, a curing agent present externally and/or internally as a part of the active hydrogen-containing resin, and an acid catayst, wherein the improvement comprises using as the acid catalyst a catalytic amount of a sulfonate represented by the following structural formula: ##STR4## wherein: Z is a radical independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, C 6 to C 18 aryl, halogen, alkoxy, hydroxyl, and aryloxy; R is independently selected from hydrogen, C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, and C 6 to C 18 aryl; R 1 is independently selected from C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, hydroxyalkyl, and hydroxycycloalkyl; y is an integer from 0 to 4, w is an integer from 0 to 2, and x is an integer from 1 to 3, with the proviso that when w is 0, y is an integer from 1 to 4 and x is an integer from 2 to 3 and when y is 0, w is an integer from 1 to 2 and x is an integer from 1 to 3.
Claim 3
Dependent Claim
25 words
The curable composition of claim 1 wherein Z is C 1 to C 20 alkyl and R 1 is C 3 to C 20 cycloalkyl.
Claim 4
Dependent Claim
10 words
The curable composition of claim 2 wherein y is 1.
Claim 5
Dependent Claim
10 words
The curable composition of claim 2 wherein y is 2.
Claim 6
Dependent Claim
13 words
The curable composition of claim 3 wherein the sulfonate is dicyclohexyl toluene 2,4-disulfonate.
Claim 7
Dependent Claim
12 words
The curable composition of claim 4 wherein the sulfonate is dicyclohexyl 1,3-xylene-4,6-disulfonate.
Claim 8
Dependent Claim
24 words
The curable composition of claim 1 wherein R is C 3 to C 20 cycloalkyl, R 1 is C 3 to C 20 cycloalkyl.
Claim 9
Dependent Claim
12 words
The curable composition of claim 7 wherein the sulfonate is tricyclohexyl 3,5-disulfonylbenzoate.
Claim 10
Dependent Claim
34 words
The curable composition of claim 1 wherein the amount of latent acid catalyst ranges from about 0.1 percent by weight to about 20 percent by weight based on the resinous components of the composition.
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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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |