US4373008A
Expired / Lapsed
US
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Ambient hydrocurable coating compositions
Assignee: Rohm and Haas Co
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Filing: 1981-11-09
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Granted: 1983-02-08
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Expires: 2001-11-09
Abstract
Abstract The present invention is concerned with, as a hydrocurable composition, a mixture of an oxazolidine-functional polymer and a compound of a monomeric or polymeric character having a plurality of acryloxy groups. The first-mentioned polymer contains a plurality of pendant groups containing 2,2,-dialkyl oxazolidine groups. The mixture of these two components can be stored under anhydrous conditions in a closed container without co-reaction so that a one-pot or one-package composition can be made up with many conventional ingredients of coating compositions other than aqueous components and stored without gelling until the time for application when the composition may be applied at ambient temperature and humidity whereupon reaction between the main two components mentioned above occurs in the film deposited and the film set up.
Inventors
- 👤 William D. Emmons
- 👤 Wayne E. Feely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:35
CPC Classifications
C; C09; C09J; C09J4/00; C09J4/06; C08; C08F; C08F265/00; C08F265/04; C08F291/00; C09D; C09D4/00; C09D4/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31692; Y10T428/31855
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A composition, hydrocurable at ambient conditions of temperature and relative humidity, suitable for coating and impregnating purposes, comprising a mixture of (1) a soluble addition polymer containing a plurality of pendant groups containing a 2,2-dialkyl-oxazolidine or a 2,2-cycloalkyl-oxazolidine group and (2) at least one polyester obtained by the reaction of a polyol having at least two hydroxyl groups with acryloxypropionic acid or derivative thereof, the ratio of component (2) to component (1) being in the range of 0.2 to 3.5 equivalents of unsaturated acryloxy group in component (2) per equivalent of potential secondary amine nitrogen in component (1).
Claim 2
Dependent Claim
98 words
A composition, hydrocurable at ambient conditions of temperature and relative humidity, suitable for coating and impregnating purposes, comprising a mixture of (1) a soluble addition polymer containing a plurality of pendant groups containing a 2,2-dialkyl-oxazolidine or a 2,2-cycloalkyl-oxazolidine group and (2) at least one polyester obtained by the reaction of a polyol having at least two hydroxyl groups with acryloxypropionic acid or derivative thereof, the ratio of component (2) to component (1) being in the range of 0.2 to 3.5 equivalents of unsaturated acryloxy group in component (2) per equivalent of potential secondary amine nitrogen in component (1).
Claim 3
Dependent Claim
16 words
A composition according to claim 1 wherein the mixture of components (1) and (2) is anhydrous.
Claim 4
Dependent Claim
30 words
A composition according to claim 1 wherein the component (1) is a copolymer of a mixture of monoethylenically unsaturated monomers comprising at least 1% by weight of N-(meth)acryloxyalkyl-2,2-dialkyl-oxazolidine or N-(meth)acryloxyalkyl-2,2-alkylene-oxazolidine.
Claim 5
Dependent Claim
41 words
A composition according to claim 1 wherein the relative proportions of component (2) to component (1) are such as to provide at least about one equivalent of acryloxy unsaturation in component (2) to each equivalent of amine nitrogen in component (1).
Claim 6
Dependent Claim
43 words
A composition according to claim 1 wherein the relative proportions of component (2) to component (1) are such as to provide at least about one to two equivalents of acryloxy unsaturation in component (2) to each equivalent of amine nitrogen in component (1).
Claim 7
Dependent Claim
88 words
A method of applying a composition according to claim 1 which comprises the step of spreading the composition on a surface of a substrate to be coated, impregnated, or both, at ambient temperature and relative humidity whereupon the moisture in the atmosphere causes hydrolysis of the oxazolidine ring with liberation of a ketone and the conversion of the tertiary amine nitrogen of the ring to a secondary amine nitrogen and crosslinking of component (1) by Michael addition to the acryloxy groups in component (2) occurs at ambient temperature.
Claim 8
Dependent Claim
24 words
A method according to claim 6 wherein the ambient temperature cure is supplemented by a cure at elevated temperature up to about 70° C.
Claim 9
Independent Claim
159 words
A method for producing a cured coating, impregnating, binding or adhesive film which comprises the steps of forming a liquid film-forming composition by mixing the components (1) a soluble addition polymer containing a plurality of pendant groups containing a 2,2-dialkyl-oxazolidine or a 2,2-cycloalkyloxazolidine group and (2) at least one polyester obtained by the reaction of a polyol having at least two hydroxyl groups with acryloxypropionic acid or derivative thereof, the ratio of component (2) to component (1) being in the range of 0.2 to 3.5 equivalents of unsaturated acryloxy group in component (2) per equivalent of potential secondary amine nitrogen in component (1), applying the composition to at least one surface of a substrate to be coated at ambient conditions of temperatures and relative humidity to deposit a film coating the surface of, or impregnating any pores or interstitial openings extending into the substrate, and then curing the film by exposure to ambient conditions of temperature and relative humidity.
Claim 10
Independent Claim
159 words
A method for producing a cured coating, impregnating, binding or adhesive film which comprises the steps of forming a liquid film-forming composition by mixing the components (1) a soluble addition polymer containing a plurality of pendant groups containing a 2,2-dialkyl-oxazolidine or a 2,2-cycloalkyloxazolidine group and (2) at least one polyester obtained by the reaction of a polyol having at least two hydroxyl groups with acryloxypropionic acid or derivative thereof, the ratio of component (2) to component (1) being in the range of 0.2 to 3.5 equivalents of unsaturated acryloxy group in component (2) per equivalent of potential secondary amine nitrogen in component (1), applying the composition to at least one surface of a substrate to be coated at ambient conditions of temperatures and relative humidity to deposit a film coating the surface of, or impregnating any pores or interstitial openings extending into the substrate, and then curing the film by exposure to ambient conditions of temperature and relative humidity.
Claim 11
Dependent Claim
10 words
An article produced by the method according to claim 8.
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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) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |