IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0357817
(2003-02-04)
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발명자
/ 주소 |
- Rechenberg, Karen S.
- Coca, Simion
- Barkac, Karen A.
- O'Dwyer, James B.
- Bowser, Linda J.
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| 출원인 / 주소 |
- PPG Industries Ohio, Inc.
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
20 인용 특허 :
42 |
초록
▼
A thermosetting composition that includes a co-reactable solid, particulate mixture of a film forming material having functional groups and a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material. The crosslinking agent inc
A thermosetting composition that includes a co-reactable solid, particulate mixture of a film forming material having functional groups and a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material. The crosslinking agent includes a copolymer having at least 30 mol % of alternating structural units of a residue from a donor monomer and a residue from one or more acrylic acceptor monomers. The thermosetting composition may coat a substrate by coalescing the composition to form a continuous film and curing the composition. The thermosetting composition may be included as part of a multi-component composite coating composition that includes an optional primer coat, a base coat deposited from a pigmented film-forming composition, and a transparent top coat applied over the base coat, where either the base coat, the transparent top coat, or both, are deposited from the thermosetting composition.
대표청구항
▼
1. A thermosetting composition comprising a co-reactable solid, particulate mixture of:(a) a film forming material comprising functional groups; and(b) a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material (a) comprising
1. A thermosetting composition comprising a co-reactable solid, particulate mixture of:(a) a film forming material comprising functional groups; and(b) a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material (a) comprising a copolymer composition comprising at least 30 mol % of residues having the following alternating structural units: wherein DM represents a residue from a donor monomer selected from the group consisting of isobutylene, diisobutylene, dipentene, isoprene, isoprenol, 1-octene, and mixtures thereof; and AM represents a residue from one or more acrylic acceptor monomers. 2. The thermosetting composition of claim 1, wherein the film forming material comprising functional groups (a) comprises a polymer comprised of residues of acrylate monomers, methacrylate monomers, and mixtures thereof. 3. The thermosetting composition of claim 1, wherein the functional groups of the film forming material (a) are selected from the group consisting of epoxy, carboxylic acid, hydroxy, thiol, isocyanate, capped isocyanate, amide, amine, acetoacetate, methylol, methylol ether, oxazoline, carbamate, and beta-hydroxyalkylamide; the functional groups of the crosslinking agent (b) are selected from the group consisting of epoxy, carboxylic acid, hydroxy, thiol, amide, amine, oxazoline, acetoacetate, methylol, methylol ether, isocyanate, capped isocyanate, beta hydroxyalkamide, and carbamate; and wherein the functional groups of the film forming material (a) are reactive with those in the crosslinking agent (b). 4. The thermosetting composition of claim 2, wherein the polymer in (a) comprises residues of monomers containing epoxy functional groups and the acrylic acceptor monomers in the crosslinking agent (b) include one or more carboxylic acid functional acrylic monomers. 5. The thermosetting composition of claim 4, wherein the carboxylic acid functional acrylic monomers include acrylic acid. 6. The thermosetting composition of claim 1, in which the donor monomer is selected from the group consisting of isobutylene, diisobutylene, isoprene, and mixtures thereof. 7. The thermosetting composition of claim 6, wherein the copolymer in (b) has a number average molecular weight of from 500 to 30,000 and a polydispersity index of less than 4. 8. The thermosetting composition of claim 6, wherein the polymer in (a) has a number average molecular weight of from 500 to 30,000 and a polydispersity index of less than 4. 9. The thermosetting composition of claim 6, wherein the copolymer in (b) has a functional group equivalent weight of from 100 to 5,000 grams/equivalent. 10. The thermosetting composition of claim 6, wherein the polymer in (a) has a functional group equivalent weight of from 100 to 5,000 grams/equivalent. 11. The thermosetting composition of claim 6, wherein the equivalent ratio of functional group equivalents in the copolymer of crosslinking agent (b) to functional group equivalents in the polymer in (a) is within the range of 1:3 to 3:1. 12. The thermosetting composition of claim 6, wherein said crosslinking agent (b) is present in an amount of from 1 to 45 percent by weight, based on total weight of resin solids, and said film forming material (a) is present in an amount of from 55 to 99 percent by weight, based on total weight of resin solids. 13. The thermosetting composition of claim 6, wherein the crosslinking agent (b) further comprises one or more polycarboxylic acid functional materials selected from the group consisting of C 4 to C 20 aliphatic carboxylic acids, polymeric polyanhydrides, carboxylic acid functional polyesters, and carboxylic acid functional polyurethanes. 14. The thermosetting composition of claim 13, wherein the C 4 to C 20 aliphatic carboxylic acids are selected from the group consisting of dodecanedioic acid, azelaic acid, adipic acid, 1,6-hexanedioic acid, succinic acid, pimelic acid, sebacic acid, maleic acid, c itric acid, itaconic acid, aconitic acid, and mixtures thereof. 15. The thermosetting composition of claim 6, wherein the acrylic acceptor monomers are one or more described by structure (III):wherein Y is selected from the group consisting of —NR 3 2 , —O—R 5 —O—C(═O)—NR 3 2 , and —OR 4 ; R 3 is selected from the group consisting of H, linear or branched C 1 to C 20 alkyl, and linear or branched C 1 to C 20 alkyl, aryl, or aralkyl containing one or more epoxy, carboxylic acid, hydroxy, thiol, amide, amine, oxazoline, acetoacetate, methylol, methylol ether, isocyanate, capped isocyanate, beta hydroxyalkamide, or carbamate functional groups; R 4 is selected from the group consisting of H, linear or branched C 1 to C 20 alkyl, aryl, or aralkyl containing one or more epoxy, carboxylic acid, hydroxy, thiol, amide, amine, oxazoline, acetoacetate, methylol, methylol ether, isocyanate, capped isocyanate, beta hydroxyalkamide, or carbamate functional groups; and R 5 is a divalent linear or branched C 1 to C 20 alkylene linking group. 16. The thermosetting composition of claim 1, wherein the acrylic acceptor monomer is one or more selected from the group consisting of hydroxyethyl acrylate, hydroxypropyl acrylate, acrylic acid, dimethylaminoethyl acrylate, acrylamide, glycidyl acrylate, glycidyl methacrylate, N-(butoxymethyl)acrylamide, hydroxyethyl methacrylate, hydroxypropyl methacrylate, methacrylic acid, methacrylamide, 2-carbamoyloxyethyl acrylate, 2-carbamoyloxyethyl methacrylate, 2-carbamoyloxypropyl acrylate, 2-carbamoyloxypropyl methacrylate, 2-isocyanatoethyl acrylate, 2-isocyanatoethyl methacrylate, 2-isocyanatopropyl acrylate, 2-isocyanatopropyl methacrylate, 2-[2-(acryloyloxy)ethyl)-2-oxazoline, 2-(2-(methacryloyloxy)ethyl]-2-oxazoline, 2-[2-(acryloyloxy)propyl]-2-oxazoline, 2-[2-(methacryloyloxy)propyl]-2-oxazoline, acetoacetate ester of hydroxyethyl acrylate, acetoacetate ester of hydroxyethyl methacrylate, acetoacetate ester of hydroxypropyl methacrylate, and acetoacetate ester of hydroxypropyl acrylate. 17. A thermosetting composition comprising a co-reactable solid, particulate mixture of:(a) a film forming material comprising an acrylic copolymer comprised of residues of epoxy functional monomers selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, allyl glycidyl ether, vinyl glycidyl ether, and mixtures thereof; and residues of acrylate monomers and methacrylate monomers selected from the group consisting of linear and branched C 1 to C 20 alkyl, aryl, alkaryl, and aralkyl esters of acrylic acid, C 1 to C 20 alkyl, aryl, alkaryl, and aralkyl esters of methacrylic acid and mixtures thereof; and(b) a crosslinking agent having at least two functional groups that are reactive with the functional groups in the film forming material (a) comprising a copolymer comprised of at least 30 mol % of residues having the following alternating structural units: wherein DM represents a residue from a donor monomer selected from the group consisting of isobutylene, diisobutylene, dipentene, isoprene, isoprenol, 1-octene, and mixtures thereof; and AM represents a residue from one or more acrylic acceptor monomers selected from the group consisting of acrylic acid and methacrylic acid. 18. A method of coating a substrate comprising:(A) applying the thermosetting composition of claim 1 to the substrate;(B) coalescing the thermosetting composition to form a substantially continuous film; and(C) curing the thermosetting composition. 19. A method of coating a substrate comprising:(A) applying the thermosetting composition of claim 17 to the substrate;(B) coalescing the thermosetting composition to form a substantially continuous film; and(C) curing the thermosetting composition. 20. A substrate coated using the method of claim 18. 21. A substrate coated using the method of claim 19.
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