Polymer having unsaturated cycloaliphatic functionality and coating compositions therefrom
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/42
B65D-001/12
C08G-063/553
C09D-167/06
C09D-005/08
B05D-001/00
C08L-061/12
출원번호
US-0165679
(2014-01-28)
등록번호
US-8946346
(2015-02-03)
발명자
/ 주소
Skillman, Charles
Share, Paul E.
Paulson, Greg
Evans, Richard H.
Prouvost, Benoit
Stenson, Paul
출원인 / 주소
Valspar Sourcing, Inc.
인용정보
피인용 횟수 :
1인용 특허 :
45
초록▼
A polymer is provided that preferably includes at least one unsaturated cycloaliphatic group. In one embodiment, the polymer is combined with an optional crosslinker and an optional carrier to form a coating composition suitable for use in coating articles such as packaging articles. In one embodime
A polymer is provided that preferably includes at least one unsaturated cycloaliphatic group. In one embodiment, the polymer is combined with an optional crosslinker and an optional carrier to form a coating composition suitable for use in coating articles such as packaging articles. In one embodiment, the polymer has at least one unsaturated cycloaliphatic group that is at least bicyclic.
대표청구항▼
1. A method, comprising: providing a coating composition comprising an aromatic polyester polymer having a Tg of at least 0° C. and a backbone or pendant unsaturated at least bicyclic group with a double bond located between carbon atoms of a ring;applying the coating composition on a metal substrat
1. A method, comprising: providing a coating composition comprising an aromatic polyester polymer having a Tg of at least 0° C. and a backbone or pendant unsaturated at least bicyclic group with a double bond located between carbon atoms of a ring;applying the coating composition on a metal substrate prior to, or after, forming the metal substrate into a food or beverage can or a portion thereof. 2. The method of claim 1, wherein the coating composition includes less than 2 weight percent of water, if any. 3. The method of claim 1, wherein the coating composition includes at least 20 weight percent of water. 4. The method of claim 1, wherein the coating composition is applied on the metal substrate prior to forming the metal substrate into a food or beverage can or a portion thereof, and wherein, after curing the coating composition, the coated metal substrate is formed into a food or beverage can or a portion thereof. 5. The method of claim 1, wherein the unsaturated at least bicyclic group was incorporated into the aromatic polyester polymer using nadic acid, methyl-nadic acid, or an anhydride or derivative thereof. 6. The method of claim 5, wherein the aromatic polyester polymer includes a plurality of the unsaturated at least bicyclic groups that constitute at least about 5 weight percent of the aromatic polyester polymer. 7. The method of claim 1, wherein the aromatic polyester polymer comprises a reaction product of ingredients including one or more of maleic acid or anhydride, and wherein a structural unit derived from maleic acid or anhydride includes the unsaturated at least bicyclic group. 8. The method of claim 7, wherein the structural unit is a Diels-Alder reaction product. 9. The method of claim 1, wherein the aromatic polyester polymer includes a plurality of the unsaturated at least bicyclic groups that constitute at least about 5 weight percent of the aromatic polyester polymer. 10. The method of claim 9, wherein the aromatic polyester polymer includes at least 5 weight percent of aromatic groups. 11. The method of claim 9, wherein the coating composition includes an amino crosslinker, an anhydride-based crosslinker, a blocked isocyanate crosslinker, a phenolic crosslinker, an epoxy-functional crosslinker, or a mixture thereof. 12. The method of claim 9, wherein the aromatic polyester polymer includes less than 3 weight percent of fatty acids and oils, based on the total non-volatile weight of ingredients used to make the aromatic polyester polymer. 13. The method of claim 9, wherein the aromatic polyester polymer includes less than 1 weight percent of long-chain hydrocarbons including eight or more carbon atoms, based on the total non-volatile weight of ingredients used to make the aromatic polyester polymer. 14. The method of claim 9, wherein the aromatic polyester polymer is formed from reactants including a dianhydride. 15. The method of claim 9, wherein the dianhydride comprises pyromellitic dianhydride. 16. The method of claim 1, wherein the aromatic polyester polymer has a Tg of at least 25° C. and less than 150° C. 17. The method of claim 16, wherein the coating compositions includes a resole phenolic crosslinker. 18. A method, comprising: providing a coating composition comprising: an aromatic polyester polymer having a number average molecular weight of from 3,000 to 15,000 that includes: at least 10 weight percent of aromatic groups, andat least 5 weight percent of backbone or pendant unsaturated at least bicyclic groups having a carbon-carbon double bond located between carbon atoms of a ring;a crosslinker comprising an amino crosslinker, an anhydride-based crosslinker, a blocked isocyanate crosslinker, a phenolic crosslinker, an epoxy-functional crosslinker, or a mixture thereof; anda liquid carrier; andapplying the coating composition on a metal substrate prior to, or after, forming the metal substrate into a food or beverage can or a portion thereof. 19. A method, comprising: providing a metal substrate having a coating present on at least a portion of the substrate, wherein the coating was formed from a coating composition including at least 50 weight percent, based on the total nonvolatile weight of the coating composition, of an aromatic polyester polymer that includes (i) a backbone or pendant unsaturated at least bicyclic group with a double bond located between carbon atoms of a ring and (ii) at least 5 weight percent of aromatic groups; andforming the metal substrate into a food or beverage can or a portion thereof. 20. The method of claim 19, wherein the aromatic polyester polymer includes at least 20 weight percent of aromatic groups. 21. The method of claim 19, wherein the coating composition includes, based on nonvolatile weight, from 5 to 50 weight percent of one or more crosslinkers. 22. The method of claim 19, wherein the coating composition includes, based on nonvolatile weight, from 5 to 50 weight percent of a resole phenolic crosslinker. 23. The method of claim 19, wherein the aromatic polyester polymer includes less than 3 weight percent of fatty acids and oils, based on the total non-volatile weight of ingredients used to make the aromatic polyester polymer. 24. The method of claim 19, wherein the aromatic polyester polymer includes less than 1 weight percent of long-chain hydrocarbons including eight or more carbon atoms, based on the total non-volatile weight of ingredients used to make the aromatic polyester polymer. 25. The method of claim 19, wherein the food or beverage can or a portion thereof comprises a sidewall of a three-piece food can and the coating comprises an interior coating. 26. The method of claim 19, wherein the coating is substantially free of bound BPA and aromatic glycidyl ether compounds. 27. A food or beverage can or a portion thereof produced by the method of claim 19. 28. The food or beverage can of claim 27, wherein the coating is an interior coating and the food or beverage can contains a food or beverage product.
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