Patent US4352842A successfully refreshed from Google Patents.
US4352842A
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Process for coating and curing thermosetting resinous binder compositions using transesterification catalyst
Assignee: Shell USA Inc
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Filing: 1982-02-16
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Granted: 1982-10-05
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Expires: 2002-02-16
Abstract
Abstract A thermosetting binder composition for coating, comprising: (I) (1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g; (2) A non-acidic polyester of a polycarboxylic acid crosslinking agent having more than one β-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and (II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons. For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.
Inventors
- 👤 Petrus G. Kooymans
- 👤 Johannes J. M. H. Wintraecken
- 👤 Werner T. Raudenbusch
- 👤 Josepha M. E. Seelen-Kruijssen
- 👤 Gerardus C. M. Schreurs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488; C09D5/4496; C08; C08G; C08G59/00; C08G59/14; C09D163/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
131 words
A process for preparing an insoluble, infusible coating on a surface which comprises (A) applying a thermosetting binder composition comprising: (I) a mixture or precondensate of: (1) a non-acidic resinous compound essentially free of ethylenically unsaturation, having a molecular weight of at least 900 and a hydroxyl content of at least 0.2 equivalent per 100 g, and (2) a non-acidic polyester having an acid number of not more than 10 of a polycarboxylic acid cross-linking agent having more than one β-hydroxyl ester group per molecule, at least one of components (1) and (2) having a hydroxyl functionality of more than 2, and (II) a transesterification-promoting metal salt or metal complex curing catalyst which is soluble in liquid hydrocarbons and (B) curing said coating at a temperature not higher than 200° C.
Claim 2
Dependent Claim
131 words
A process for preparing an insoluble, infusible coating on a surface which comprises (A) applying a thermosetting binder composition comprising: (I) a mixture or precondensate of: (1) a non-acidic resinous compound essentially free of ethylenically unsaturation, having a molecular weight of at least 900 and a hydroxyl content of at least 0.2 equivalent per 100 g, and (2) a non-acidic polyester having an acid number of not more than 10 of a polycarboxylic acid cross-linking agent having more than one β-hydroxyl ester group per molecule, at least one of components (1) and (2) having a hydroxyl functionality of more than 2, and (II) a transesterification-promoting metal salt or metal complex curing catalyst which is soluble in liquid hydrocarbons and (B) curing said coating at a temperature not higher than 200° C.
Claim 3
Dependent Claim
77 words
The process of claim 1 wherein component (I)(1) is a compound having the formula: A-B--C-B).sub.m A wherein m is a number from 0 to 2, A a dialkylamino group which is linked to B through a tertiary amino function, B is a group ##STR6## wherein n is a number from 0 to 4, R is a hydrocarbon radical of a dihydric phenol, and C is a group which is linked to B through two tertiary amino functions.
Claim 4
Dependent Claim
138 words
The process of claim 1 wherein component (I)(1) is a compound having the formula: [A-B--C-B).sub.m ].sub.p D wherein m is a number from 0 to 2, A a dialkylamino group which is linked to B through a tertiary amino function, B is a group ##STR7## wherein n is a number from 0 to 4, R is a hydrocarbon radical of a dihydric phenol, and C is a group which is linked to B through two tertiary amino functions, p is a number from 3 to 4, and D is a group linked to B through p-tertiary amino functions and being derived from a polyamine and a glycidyl ester of saturated aliphatic monocarboxylic acids containing from 9 to 11 carbon atoms in the acid molecule and wherein the carboxyl group is attached to a tertiary or quaternary carbon atom.
Claim 5
Dependent Claim
13 words
The process of claim 2 or 3 wherein A is a diethanolamino group.
Claim 6
Dependent Claim
26 words
The process of claim 3 wherein component (I)(2) is a non-acidic polyester prepared from a polycarboxylic acid anhydride and at least one glycol, glycol-monoether, or polyol.
Claim 7
Dependent Claim
13 words
The process of claim 5 wherein component (I)(2) is derived from trimellitic anhydride.
Claim 8
Dependent Claim
16 words
The process of claims 5 or 6 wherein the polyester is further reacted with a monoepoxide.
Claim 9
Dependent Claim
18 words
A process of claim 7 wherein the monoepoxide is a glycidyl ester of branched saturated aliphatic monocarboxylic acids.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein component (II) is a polyvalent metal salt or complex which is insoluble in water.
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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) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |