Corrosion-responsive coating formulations for protection of metal surfaces
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01B-001/00
C01B-003/02
C01B-003/00
C23F-011/00
C08G-075/00
C08G-073/00
출원번호
UP-0217699
(2008-07-08)
등록번호
US-7601280
(2009-10-28)
발명자
/ 주소
Kinlen, Patrick J.
출원인 / 주소
Lumimove, Inc. A Missouri Corporation
대리인 / 주소
Nelson Mullins Riley & Scarborough, LLP
인용정보
피인용 횟수 :
6인용 특허 :
51
초록▼
Methods and compositions are described for protecting a metal surface against corrosion. The method involves applying to the metal surface a coating formulation that comprises a radiation curable resin and a corrosion-responsive agent that is capable of releasing a corrosion-inhibiting ion in respon
Methods and compositions are described for protecting a metal surface against corrosion. The method involves applying to the metal surface a coating formulation that comprises a radiation curable resin and a corrosion-responsive agent that is capable of releasing a corrosion-inhibiting ion in response to exposure to ionic species characteristic of those present on a metal surface undergoing oxidative corrosion; and exposing the coating formulation to radiation whereby the radiation curable resin forms a corrosion-resisting coating having a low spontaneous release rate of the corrosion-responsive agent into the environment.
대표청구항▼
What is claimed is: 1. A method of producing an intrinsically conductive polymer salt of a corrosion-responsive agent, the method comprising: (a) subjecting a liquid mixture containing a corrosion-responsive agent chosen from one or more of 1-(4-hydroxyphenyl)-1H-tetrazol-5-thiol, 1,2,4-triazole-3-
What is claimed is: 1. A method of producing an intrinsically conductive polymer salt of a corrosion-responsive agent, the method comprising: (a) subjecting a liquid mixture containing a corrosion-responsive agent chosen from one or more of 1-(4-hydroxyphenyl)-1H-tetrazol-5-thiol, 1,2,4-triazole-3-thiol, 1-pyrollidinecarbodithioic acid, 2,2'-dithiobis(benzothiazole), 2,4-dimercapto-6-amino-5-triazine, 2,4-dithiohydantoin, 2,5-dimercapto-1,3,4-thiadiazole, 2,5-dimethylbenzothiazole, 2-amino-1,3,4-thiadiazole, 2-mercapto-5-methylbenzimidazole, 2-mercapto-5-nitrobenzimidazole, 2-mercaptobenzimidizole, 2-mercaptobenzoxazole, 2-mercaptoethane sulfonic acid, 2-mercaptoimidazole, 2-mercaptothiazoline, 2-thiouracil, 3-amino-5-mercapto-1,2,4-triazole, 5,5-dithio-bis(1,3,4-thiadiazole-2(3H)-thione, 5-amino-1,3,4-thiadiazole, 6-amino-2-mercaptobenzothiazole, 6-ethoxy-2-mercaptobenzothiazole, 6-mercaptopurine,-alky-or N-cycloalkyl-dithiocarbamates, alkyl-and cyclo-alkyl mercaptanes, benzothiazole, dimercapto pyridine, dimethyldithio carbamic acid, dithiocyanuric acid, mercaptobenzothiazole, mercaptobenzoxazole, mercaptoethanesulfonic acid, mercaptoimidazole, mercaptopyridine, mercaptopyrimidine, mercaptopuinoline, mercaptothiazole, mercaptothiazoline mercaptotriazole, O,O-dialkyl-and O,O-dicycloalkyl-dithiophosphates, O-alkyl-or O-cycloalkyl-dithiocarbonates, o-ethylxanthic acid, quinoxaline-2,3-thiol, thioacetic acid, thiocresol, thiosalicylic acid, trithiocyanuric acid, and dimers, trimers, oligomers, and polymers thereof, to high-shear mixing to separate the corrosion-responsive agent into very fine particles; (b) adding a monomer of an intrinsically conductive polymer to the mixture of fine corrosion-responsive agent particles while subjecting the mixture to high-shear mixing; (c) adding an oxidant to the mixture to facilitate polymerization of the monomer of the intrinsically conductive polymer into an intrinsically conductive polymer which is doped by the corrosion-responsive agent to form the ICP/CRA salt; and (d) recovering the ICP/CRA salt. 2. The method according to claim 1, wherein the polymerization of the monomer of the intrinsically conductive polymer is carried out in the presence of a corrosion-responsive agent and an acid that is not a corrosion-responsive agent, wherein the molar ratio of total acids to corrosion-responsive agent is lower than 8:1. 3. The method according to claim 2, wherein the molar ratio of total acids to corrosion-responsive agent is lower than 2:1. 4. The method according to claim 2, wherein the polymerization is carried out in a medium that is free of an acid other than the corrosion-responsive agent. 5. The method according to claim 1, wherein the monomer of an intrinsically conductive polymer is chosen from one or more of aniline, pyrrole, and thiophene.
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