Thermally curable compositions and method
First Claim
1. A thermally curable composition comprising:
- (i) a cyclic ether;
(ii) an initiator selected from the group consisting of an iodonium salt, a sulfonium salt, an acylium salt, a tropylium salt, an oxonium salt, and combinations thereof; and
(iii) a catalyst having structure Pd(Q)2,wherein Q is at least one ligand selected from the group consisting of a carboxylate, a halide, a ketoester, an ester, a ketone, an hydroxyl, and combinations thereof.
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Accused Products
Abstract
Disclosed are thermally curable compositions comprising at least one cyclic ether, an initiator selected from the group consisting of an iodonium salt, a sulfonium salt, an acylium salt, a tropylium salt, an oxonium salt, and combinations thereof, and a catalyst having structure Pd(Q)2, wherein Q is at least one ligand selected from the group consisting of a carboxylate, a halide, a ketoester, an ester, a ketone, an hydroxyl, and combinations thereof. Disclosed also are methods of curing the thermally curable compositions, and articles made therefrom. Curing methods comprise heating the composition to a suitable temperature for a period of time. Articles may comprise coated articles, shaped articles or shaped components. Compositions and methods may also be used for composite repair applications.
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Citations
27 Claims
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1. A thermally curable composition comprising:
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(i) a cyclic ether; (ii) an initiator selected from the group consisting of an iodonium salt, a sulfonium salt, an acylium salt, a tropylium salt, an oxonium salt, and combinations thereof; and (iii) a catalyst having structure Pd(Q)2, wherein Q is at least one ligand selected from the group consisting of a carboxylate, a halide, a ketoester, an ester, a ketone, an hydroxyl, and combinations thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of curing an epoxy composition comprising the steps of:
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(A) providing a curable composition comprising (i) a cyclic ether, (ii) an initiator selected from the group consisting of an iodonium salt, a sulfonium salt, an acylium salt, a tropylium salt, an oxonium salt, and combinations thereof, and (iii) a catalyst having structure Pd(Q)2, wherein Q is at least one ligand selected from the group consisting of a carboxylate, a halide, a ketoester, an ester, a ketone, an hydroxyl, and combinations thereof; and (B) heating the curable composition at a temperature and for a period of time to effect curing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A thermally curable coating composition consisting essentially of:
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(i) a cyclic ether that comprises at least one epoxy group, at least one oxetane group, or combinations thereof; (ii) a catalyst selected from the group consisting of palladium(II) acetylacetonate, palladium(II) chloride, palladium(II) isopropyl acetylacetonate, palladium(II) acetate, and combinations thereof; and (iii) an initiator selected from the group consisting of an iodonium salt, a sulfonium salt, an acylium salt, a tropylium salt, an oxonium salt, and combinations thereof. - View Dependent Claims (24, 25, 26, 27)
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Specification