US20050113559A1 - Conducting polymer for pretreatment of metallic and non-metallic surfaces - Google Patents
Conducting polymer for pretreatment of metallic and non-metallic surfaces Download PDFInfo
- Publication number
- US20050113559A1 US20050113559A1 US10/798,533 US79853304A US2005113559A1 US 20050113559 A1 US20050113559 A1 US 20050113559A1 US 79853304 A US79853304 A US 79853304A US 2005113559 A1 US2005113559 A1 US 2005113559A1
- Authority
- US
- United States
- Prior art keywords
- poly
- complex
- vinylphosphate
- double
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 229920001940 conductive polymer Polymers 0.000 title claims abstract description 43
- 239000002322 conducting polymer Substances 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000000203 mixture Substances 0.000 claims abstract description 53
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 238000009472 formulation Methods 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000004381 surface treatment Methods 0.000 claims abstract description 17
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 229920000767 polyaniline Polymers 0.000 claims description 36
- -1 Poly(vinylphosphate) Polymers 0.000 claims description 35
- 229920000128 polypyrrole Polymers 0.000 claims description 29
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 27
- 230000007797 corrosion Effects 0.000 claims description 24
- 238000005260 corrosion Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- 239000003446 ligand Substances 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 4
- 235000019792 magnesium silicate Nutrition 0.000 claims description 4
- 239000000391 magnesium silicate Substances 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 4
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 4
- 239000012756 surface treatment agent Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000006233 lamp black Substances 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- MVCALJDWVUNDSA-UHFFFAOYSA-N [O-2].[Mg+2].[Ce+3] Chemical compound [O-2].[Mg+2].[Ce+3] MVCALJDWVUNDSA-UHFFFAOYSA-N 0.000 claims 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 12
- 239000003973 paint Substances 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 229920003023 plastic Polymers 0.000 abstract description 7
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000002987 primer (paints) Substances 0.000 description 25
- 239000000243 solution Substances 0.000 description 19
- 229920001746 electroactive polymer Polymers 0.000 description 9
- 229910019142 PO4 Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 235000021317 phosphate Nutrition 0.000 description 7
- 238000007747 plating Methods 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 229920002125 Sokalan® Polymers 0.000 description 6
- 229920000775 emeraldine polymer Polymers 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000010970 precious metal Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 230000009044 synergistic interaction Effects 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 230000001476 alcoholic effect Effects 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 229910001463 metal phosphate Inorganic materials 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 239000013081 microcrystal Substances 0.000 description 3
- 239000002114 nanocomposite Substances 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 230000005588 protonation Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- DWJXWSIJKSXJJA-UHFFFAOYSA-N 4-n-[4-(4-aminoanilino)phenyl]benzene-1,4-diamine Chemical group C1=CC(N)=CC=C1NC(C=C1)=CC=C1NC1=CC=C(N)C=C1 DWJXWSIJKSXJJA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229920000763 leucoemeraldine polymer Polymers 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 230000009133 cooperative interaction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005595 deprotonation Effects 0.000 description 1
- 238000010537 deprotonation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
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- 238000000605 extraction Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- QOKYJGZIKILTCY-UHFFFAOYSA-J hydrogen phosphate;zirconium(4+) Chemical compound [Zr+4].OP([O-])([O-])=O.OP([O-])([O-])=O QOKYJGZIKILTCY-UHFFFAOYSA-J 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000012669 liquid formulation Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 229920002113 octoxynol Polymers 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
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- 239000002901 radioactive waste Substances 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/362—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/12—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
- C08G61/122—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule derived from five- or six-membered heterocyclic compounds, other than imides
- C08G61/123—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule derived from five- or six-membered heterocyclic compounds, other than imides derived from five-membered heterocyclic compounds
- C08G61/124—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule derived from five- or six-membered heterocyclic compounds, other than imides derived from five-membered heterocyclic compounds with a five-membered ring containing one nitrogen atom in the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/02—Polyamines
- C08G73/026—Wholly aromatic polyamines
- C08G73/0266—Polyanilines or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08L61/04, C08L61/18 and C08L61/20
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L65/00—Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/02—Polyamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/12—Wash primers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
- H01B1/124—Intrinsically conductive polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
- H01B1/124—Intrinsically conductive polymers
- H01B1/127—Intrinsically conductive polymers comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
- H01B1/124—Intrinsically conductive polymers
- H01B1/128—Intrinsically conductive polymers comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes
Definitions
- This invention is directed to the synthesis of double-stranded conducting polymers, formulation for surface treatment reagents, and the use of water-borne double-stranded conducting polymers.
- chromate based metal finishing compositions have been the industry standard.
- the chromate-based metal finishes serves two functions, corrosion inhibition and adhesion enhancement.
- the chromates are toxic and environmentally unfriendly.
- the existing chromate-based metal finishing technology will be banned from use because of the toxicity of the hexavalent chromate. Therefore, the metal finishing industry is seeking an alternative to chromate-based surface treatments.
- the industry is shifting to non-chromate phosphate-based metal finishes.
- One problem with phosphate-based metal finishes is that they lack corrosion resistance.
- This invention concerns the synthesis of double-stranded conducting polymers, a formulation for surface treatment reagents, and the use of water-borne double-stranded conducting polymers for the following types of applications: a surface conversion or surface treatment agent for metal surfaces; an early-warning indicator for metal corrosion; a component for a wash primer for aluminum alloys, magnesium alloys, steel and other non-noble metals; a surface modification coating on non-metallic surfaces to catalyze deposition of decorative and functional top coatings; an additive to improve the performance of adhesive bonding of metals; and for others that are logical extensions of the above application.
- the invention involves the integration of the appropriate ligands in the second strand.
- a carboxylic function group helps binding the polarized metal atoms on the surface.
- a phosphate functional group helps binding with the metal oxides and the formation of crystalline nano-composite with the microcrystals nucleated on the metal surface.
- Adhesion or miscibility with an organic surface is provided by attaching hydrophobic organic functional groups on the second strand provide.
- the organic polymer, metal phosphate, metal oxide and metal forms a composite material at the interface. This interface is mechanically sturdy, chemically stable and it serves as a regeneratable self-healing interface.
- the invention involves the use of conducting polymers of the invention as a component (additive) in the currently existing formulation, without the chromates and phosphates.
- the use of water-borne conducting polymer will provide metal finishing that will provide the dual function of corrosion resistance and adhesion enhancement.
- compositions can be used to treat metal surfaces to provide a stable interface for adhesive binding or the coating of paint or plastics on top of the chemically modified surface. This composition is useful as a replacement of chromate-based surface treatment process.
- the conducting polymers of the present invention including the new metal finishing (surface treatment) technology include no toxic chromates, enhances the performance of phosphate treatment and water-base, and there is no emission of volatile organic compounds (VOC). In the area of heavy metal removal from solutions, they are effective and convenient.
- An additional advantage of the new process is to be able to reclaim the precious metals efficiently and cheaply.
- An object of the present invention is to provide a double-stranded conducting polymer.
- Another object of the invention is to provide formulation for surface treating reagents.
- Still another object of the invention is to provide double-stranded conducting polymers to use as a surface conversion or surface treatment agent for metal surfaces; as an early-warning indicator for metal corrosion; as a component for a wash primer for aluminum alloys, magnesium alloys, steel and other non-noble metals; as a surface modification coating on non-metallic surfaces to catalyze deposition of decorative and functional top coatings; as an additive to improve the performance of adhesive bonding of metals; and for others that are logical extensions of the above application.
- the double-stranded conducting polymer provides a unique flexibility in designing molecules for surface treatment.
- the first strand of the polymeric complex has the property of being a reversible electron donor or acceptor. This reversible charge-transfer interaction with a metallic surface is not available for the existing state-of-the-art chemicals for surface treatment.
- the second strand of the complex can be designed to carry the properties of the normal surface treatment agents and, in addition, a synergistic interaction with surface atoms in a cooperative interaction with the first strand.
- the second strand includes the integration of appropriate ligands.
- a carboxylic function group helps binding the polarized metal atoms on the surface.
- a phosphate functional group assists with binding the metal oxides and the formation of crystalline nano-composite with the microcrystals nucleated on the metal surface.
- Attaching hydrophobic organic functional groups on the second strand provides adhesion or miscibility with organic surface.
- the organic polymer, metal phosphate, metal oxide and metal form a composite material at the interface. This interface is mechanically sturdy, chemically stable and it serves as a regeneratable self-healing interface.
- An example of the molecular design of synergistic interaction is to use the first strand to accept electrons from the surface states of the metal atoms, thus polarizing the surface atoms to promote chemical bonding (ligand-to-metal bond) between the metal surface and the second strand of the polymer.
- This type of dual functionality is not available in the conventional organic or inorganic surface treatment.
- the present state-of-the-art surface treatment chemicals do not have the capability of integrating two functions in one single molecule. In many situations, the performance cannot be achieved by a physical mixture of the two types of molecules. Thus, the focus is on the applications that require the synergistic interactions to be located within the same molecule.
- the double-strand synthetic polymer is a very good way to achieve the “bias-and-react” type of surface binding.
- the design concept involves the integration of the appropriate ligands in the second strand.
- a carboxylic function group helps binding the polarized metal atoms on the surface.
- a phosphate functional group helps binding with the metal oxides and the formation of crystalline nano-composite with the microcrystals nucleated on the metal surface.
- Attaching hydrophobic organic functional groups on the second strand provide adhesion or miscibility with organic surface.
- the organic polymer, metal phosphate, metal oxide and metal form a composite material at the interface. This interface is mechanically sturdy, chemically stable and it serves as a regeneratable self-healing interface.
- the new compositions can be used to treat metal surfaces to provide a stable interface for adhesive binding or the coating of paint or plastics on top of the chemically modified surface.
- This composition is useful as a replacement of chromate-based surface treatment process.
- the new composition can also be used to treat non-metal surfaces, such as plastics, ceramics, fabrics, and glass.
- the modified surface has an affinity for metal atom deposition. This new interface is then useful for metal plating, metallization of electronic circuit board, etc.
- the surface of the fabric promotes the formation of precious metal from the waste solutions containing silver and gold. This again involves the synergistic interactions provided by the double-stranded molecular design.
- the ligand on the second strand promotes the nucleation of metal on the surface of the fabric and thus the growth of metallic crystals on the fabric. Similar arrangement could be used for removal of mercury from waste water.
- family of water-borne conducting polymers of the invention can be used as a component in metal surface conversion and metal surface treatment formulations to prolong the service life of metal parts in aircraft, machinery, bridges, buildings and appliances.
- the conductive polymer film in contact with metals can function as an indicator for the changes of metal surface that precedes a damaging corrosion of metal. Advanced early warning for metal corrosion will lead to increased safety of aircraft, machinery, bridges and buildings and will reduce the maintenance costs.
- wash primers of the invention can be used as a non-chromate surface pretreatment solution.
- the conductive polymer wash primer is a candidate for replacing the currently used chromate-containing wash primer for metal surface treatment.
- the new composition can also be used to treat non-metal surfaces, such as plastics, ceramics, fabrics, and glass.
- the modified surface has an affinity for metal atom deposition. This new interface is then useful for metal plating, metallization of electronic circuit board, etc.
- the invention includes double-stranded conducting polymers.
- the double stranded polymer include:
- compositions of the formulation may include: A water-borne conducting polymer in aqueous or organic solutions (in one embodiment the water-borne conducting polymer is present in the formulation in an amount of 1%), phosphates (dihydrogenamoniumphosphate), an accelerator (e.g., hydrogen peroxide), a surfactant (triton X) for surface wetting, and surface etching and cleaning agent (e.g. phosphoric acid).
- a water-borne conducting polymer in aqueous or organic solutions in one embodiment the water-borne conducting polymer is present in the formulation in an amount of 1%
- phosphates dihydrogenamoniumphosphate
- an accelerator e.g., hydrogen peroxide
- a surfactant triton X
- surface wetting e.g. phosphoric acid
- An alternative illustrative formulation may contain double-stranded conducting polymer in isopropyl alcohol solutions, such as 1,4-butyldiol in isopropyl alcohol solution and epoxy.
- Another example of a formulation includes double-stranded conducting polymer in isocyanate and epoxy.
- Still another example contains: A water-borne conducting polymer in aqueous solution, Polyvinyl-butyral resin dissolved in isopropyl alcohol, butyl alcohol and water; Molybdenum oxide, or cerium oxide, or titanium dioxide, or zirconium hydrogen phosphate, Magnesium silicate and Phosphoric acid.
- compositions can also be used for waste water treatment and precious metal reclamation.
- metal finish is to temporarily protect the metal from corrosion or rust before a primer coating is applied, and to provide adhesion between the metal and the primer coatings.
- the conducting polymer will enhance the performance of the existing metal finish processes.
- compositions further include: plating of metal on plastic, wood or ceramic surfaces; nickel, silver or gold plating on electronic circuit board of electronic components; and improving the metal coating of via holes for electronic circuit boards.
- the electronic and jewelry industries need to coat metal films onto plastic or ceramic surfaces.
- Thin conducting polymer coating on nonmetallic surfaces enables the electrode or electrodeless coating of metals from an aqueous solution of metal ions.
- the conducting polymer helps to accelerate the metal deposition and to improve the adhesion of metal to plastic or ceramics.
- Thin conducting polymer coated fibers are efficient for removal of noble metal ions from aqueous solutions. These fibers can be used to reclaim gold, silver and copper from wastes generated by jewelry industry, photographic processing industry and electronic industry. It might also be useful for removing environmentally harmful metal ions such as mercury or radioactive wastes.
- Advantages of conducting polymer-based plating of metal on nonmetallic surfaces includes good quality of via (through-hole) plating, inexpensive method for electrolytic or electrodeless plating.
- the conducting polymer-based surface modification for nonmetal can perform better than the existing electrodeless metal coating technology. It can make the coating more uniform and less expensive.
- Present technology for metal coating on nonmetallic surfaces involve the use of inorganic catalysts, whereas the invention uses conducting polymers as a surface activation agent. While, present technology for precious metal (e.g., silver) reclamation involves the use of ion exchange resins to adsorb the metal ions. The saturated resin is then chemically reduced a thigh temperature. The new conducting polymer-based technology integrates the two steps into a single step.
- precious metal e.g., silver
- This invention includes a wash primer formulation containing two parts that are mixed immediately before the application of the formulation to steel, aluminum and/or other metal surfaces.
- the function of the wash primer is to inhibit corrosion of the metal and to enhance adhesion between the metal and the primer or topcoats.
- a range of compositions as listed below can be used as a liquid formulation suitable for spraying, brush painting, or immersion coating of the wash primer on metal. After drying, the alcoholic and water component of the formulation will be evaporated while the remaining coating is in the form of a thin film, adherent to the metal surface.
- the range of applicable weight percent of the components is listed after the name of the compound.
- the wash primer consists of two parts, which are prepared according to the following formulation:
- An alcoholic solution was prepared by mixing 135 ml isopropyl alcohol, 45 ml n-butyl alcohol, and 5 ml water. 10.5 ml of polyaniline:poly(acrylic acid) 2% dispersion in water was added to the above-mentioned mixed alcoholic solution. The solution turned green in color. The solution was stirred for one hour. 17 gm of poly(vinyl butyral) resin (19% hydroxyl functionality) was slowly dissolved in the solution. The solution was continued to be stirred for 24 hours.
- Part I and Part II of the formulation were mixed immediately before coating.
- the mixture can be either brush painted or air sprayed onto freshly cleaned cold rolled steel or aluminum alloy (AA 6061) test coupons. The excess solution was allowed to drain off the sample. The coating thickness was measured to be about 0.4 mil.
- a commercial epoxy primer was applied on top of the wash primer.
- a water-borne epoxy resin was applied by cathodic electrophoretic coating.
- a solution according to the method for part I of example 1 was prepared. It was slowly stirred. 16 gm of pigment grade molybdenum oxide, 2.4 gm magnesium silicate, and 0.2 gm lamp black was added.
- Part II is the Same as Part II of Example 1.
- the Polyaniline:poly(acrylic acid) complex in example 1 or example 2 may be replaced by one of the following complexes:
- This part of invention is directed to the use of electroactive polymers as a component in a metal surface pretreatment formulation.
- This invention improves the performance of the conventional iron phosphate and zinc phosphate pretreatment formulations.
- This formulation replaces the polyaniline:poly(acrylic acid) complex by any one or the combination of the following electroactive polymers:
- This formulation includes the compositions defined in either example 1 or example 2 and the following additional compounds: Ammonium fluoride 1% to 3% Surfactant 0.5 to 1% III.
- Ammonium fluoride 1% to 3% Surfactant 0.5 to 1% III.
- chromate containing sealing solution was used to apply a layer of hexavalent chromate.
- the function of the chromate is to inhibit corrosion.
- a solution containing dispersible or soluble conducting polymer complex as a replacement of the chromate-based sealing wash is used.
- the formulation contains the following components:
- the formulation contains the following components:
- An alternative formulation includes:
- the electroactive component in the above-described wash primer or surface pretreatment coatings was used as an indicator for the extent or the rate of corrosion process at the metal-to-primer or metal-to-topcoat interfaces. Having a corrosion indicator under the paint allows the monitoring of the extent of corrosion usually hidden under the paint. This information is useful for preventive maintenance before catastrophic failure taking place. The knowledge may increase the safety of aircrafts, bridges and other structures depending on the mechanical strength of metals.
- electroactive polymer were used as an indicator to signal the existence of corrosion under organic paint.
- the electroactive pretreatments on the metal surface contain electroactive polymers. These polymers can reversibly exchange electrons and protons with its immediate environment.
- polyaniline has three forms with different degree of oxidation (by removing electrons from the polymer). The most reduced form is leuco emeraldine.
- the transparent leuco emeraldine transforms to the green colored emeraldine salt.
- the green colored emeraldine salt transforms to the blue colored emeraldine base. With further oxidation, the blue colored emeraldine base is transformed into the purple colored pemigraniline.
- Protonation and deprotonation also causes transformation between the green colored emeraldine salt and the blue colored emeraldine base.
- the electroactive polymer in the wash primer or the phosphate containing pretreatment will exchange electron or proton. If the primer and the topcoat are transparent in the visible light spectrum, the color change of the pretreatment layer can be visualized and the change of color is indicative of the corrosion activity.
- the visible color change may be masked if the paint has deep color. Although, this situation makes it harder for detecting the corrosion induced transformation of the conducting polymer, it does not make the task impossible.
- the transformation of the conducting polymer under the paint can be monitored by the difference in the optical absorption/reflection spectrum in the near infrared spectral region (wavelength in the range between 800 nm to 2500 nm).
- the optical absorption spectrum in the near infrared region is weak, due to the overtone or combination band of vibrational spectrum of the organic molecule.
- the electroactive polymers in its electrically conductive form have strong electronic absorption band (bands) in this spectral region.
- the paint covering the electroactive pretreatment is, to a large extent, transparent for the near infrared spectral range.
- the reflected light contain the information about the oxidation and protonation state of the conducting polymer (e.g., polyaniline).
- the conducting polymer e.g., polyaniline
- the microscopic near-infrared probe one can obtain a spatially and spectrally resolved map of the oxidation and protonation states of the electroactive polymer in contact with the base metal. This information is helpful in locating the corrosion site. Information about the corrosion activity can be used to assess whether preventive maintenance should be performed.
- the process for monitoring corrosion can be scheduled at regular time intervals without damaging the coating. This saves time, money and the base material can monitored for deterioration.
- the invention is also directed to a hand held optical spectrometer that supplies light in the near infrared spectrum.
- the light can be focused on the surface of metal with electroactive pre-treatment or electroactive wash primer as the under-layer and the commercial paints as the over-layers.
- the light reflected from the surface is collected by an optical fiber wave-guide, and is sent to a spectrometer with diffraction grating and diode array detector.
- the electronic signal is sent to a computer and the reflected spectrum is analyzed.
- This instrument is a spectrally resolved digital camera.
- the camera has near-infrared sensitive two-dimensional array optical detectors.
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- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
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Priority Applications (1)
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US10/798,533 US20050113559A1 (en) | 2001-09-27 | 2004-03-11 | Conducting polymer for pretreatment of metallic and non-metallic surfaces |
Applications Claiming Priority (4)
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US32541901P | 2001-09-27 | 2001-09-27 | |
US60/325,419 | 2001-09-27 | ||
PCT/US2002/030824 WO2003027203A2 (en) | 2001-09-27 | 2002-09-27 | Conducting polymer for pretreatment of metallic and non-metallic surfaces |
US10/798,533 US20050113559A1 (en) | 2001-09-27 | 2004-03-11 | Conducting polymer for pretreatment of metallic and non-metallic surfaces |
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PCT/US2002/030824 Continuation WO2003027203A2 (en) | 2001-09-27 | 2002-09-27 | Conducting polymer for pretreatment of metallic and non-metallic surfaces |
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US (1) | US20050113559A1 (de) |
EP (1) | EP1440110A2 (de) |
AU (1) | AU2002340053A1 (de) |
WO (1) | WO2003027203A2 (de) |
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WO2013185131A1 (en) * | 2012-06-08 | 2013-12-12 | Prc-Desoto International, Inc. | Indicator coatings for metal surfaces |
CA2819340C (en) * | 2012-08-31 | 2019-04-30 | The Boeing Company | Chromium-free conversion coating |
CN106065180B (zh) * | 2016-06-08 | 2018-02-16 | 东华大学 | 一种三氧化钼‑聚吡咯‑聚苯胺三元复合材料的制备方法 |
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US5489400A (en) * | 1993-04-22 | 1996-02-06 | Industrial Technology Research Institute | Molecular complex of conductive polymer and polyelectrolyte; and a process of producing same |
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2002
- 2002-09-27 AU AU2002340053A patent/AU2002340053A1/en not_active Abandoned
- 2002-09-27 EP EP02778388A patent/EP1440110A2/de not_active Withdrawn
- 2002-09-27 WO PCT/US2002/030824 patent/WO2003027203A2/en not_active Application Discontinuation
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2004
- 2004-03-11 US US10/798,533 patent/US20050113559A1/en not_active Abandoned
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US5489400A (en) * | 1993-04-22 | 1996-02-06 | Industrial Technology Research Institute | Molecular complex of conductive polymer and polyelectrolyte; and a process of producing same |
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CN107683348A (zh) * | 2015-04-07 | 2018-02-09 | 凯密特尔有限责任公司 | 专用于调节转化涂层的电导率的方法 |
CN107735511A (zh) * | 2015-04-07 | 2018-02-23 | 凯密特尔有限责任公司 | 无镍磷化金属表面的方法 |
US10481099B2 (en) | 2015-07-02 | 2019-11-19 | Exxonmobil Upstream Research Company | Detecting moisture proximate to insulation |
WO2017197448A1 (en) * | 2016-05-16 | 2017-11-23 | Bluescope Steel Limited | Coating process |
CN109476930A (zh) * | 2016-05-16 | 2019-03-15 | 蓝野钢铁有限公司 | 涂覆方法 |
AU2017268032B2 (en) * | 2016-05-16 | 2021-09-02 | Bluescope Steel Limited | Coating process |
KR20230057478A (ko) * | 2016-05-16 | 2023-04-28 | 블루스코프 스틸 리미티드 | 코팅 공정 |
US11759819B2 (en) | 2016-05-16 | 2023-09-19 | Bluescope Steel Limited | Coating process by ion exchange |
KR102696309B1 (ko) | 2016-05-16 | 2024-08-16 | 블루스코프 스틸 리미티드 | 코팅 공정 |
CN106756938A (zh) * | 2017-02-15 | 2017-05-31 | 李啸春 | 常温锌系无渣磷化剂及生产方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2003027203A2 (en) | 2003-04-03 |
EP1440110A2 (de) | 2004-07-28 |
WO2003027203A3 (en) | 2004-03-04 |
AU2002340053A1 (en) | 2003-04-07 |
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