EP0511163B1 - Pourable aqueous dispersions of polycarboxylic acid corrosion inhibitors - Google Patents
Pourable aqueous dispersions of polycarboxylic acid corrosion inhibitors Download PDFInfo
- Publication number
- EP0511163B1 EP0511163B1 EP92810280A EP92810280A EP0511163B1 EP 0511163 B1 EP0511163 B1 EP 0511163B1 EP 92810280 A EP92810280 A EP 92810280A EP 92810280 A EP92810280 A EP 92810280A EP 0511163 B1 EP0511163 B1 EP 0511163B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- hydrogen
- acid
- water
- dispersant
- 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.)
- Expired - Lifetime
Links
- 239000006185 dispersion Substances 0.000 title claims description 62
- 239000002253 acid Substances 0.000 title claims description 33
- 238000005260 corrosion Methods 0.000 title claims description 29
- 230000007797 corrosion Effects 0.000 title claims description 29
- 239000003112 inhibitor Substances 0.000 title claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- -1 R3 is C1-C12alkyl Chemical group 0.000 claims description 42
- 239000002270 dispersing agent Substances 0.000 claims description 33
- 239000002562 thickening agent Substances 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 18
- 150000002431 hydrogen Chemical group 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 15
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical compound NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000009969 flowable effect Effects 0.000 claims description 11
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 239000003139 biocide Substances 0.000 claims description 5
- ZPOQJHGXQZVXIO-UHFFFAOYSA-N 3-(1,3-benzothiazol-2-yl)-4-oxo-4-sulfanylbutanoic acid Chemical compound C1=CC=C2SC(C(C(O)=S)CC(=O)O)=NC2=C1 ZPOQJHGXQZVXIO-UHFFFAOYSA-N 0.000 claims description 4
- 239000003945 anionic surfactant Substances 0.000 claims description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- BKKWPPMEXIXECW-UHFFFAOYSA-N 6-[[4,6-bis(5-carboxypentylamino)-1,3,5-triazin-2-yl]amino]hexanoic acid Chemical group OC(=O)CCCCCNC1=NC(NCCCCCC(O)=O)=NC(NCCCCCC(O)=O)=N1 BKKWPPMEXIXECW-UHFFFAOYSA-N 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000003115 biocidal effect Effects 0.000 claims description 3
- 150000004676 glycans Chemical class 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Chemical group 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims description 2
- 125000002853 C1-C4 hydroxyalkyl group Chemical group 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 125000004181 carboxyalkyl group Chemical group 0.000 claims description 2
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 2
- 125000004956 cyclohexylene group Chemical group 0.000 claims description 2
- 239000000417 fungicide Substances 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical group 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 2
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 230000000855 fungicidal effect Effects 0.000 claims 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 27
- 239000012065 filter cake Substances 0.000 description 20
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 19
- 150000003839 salts Chemical class 0.000 description 13
- 150000007513 acids Chemical class 0.000 description 12
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 11
- 239000000243 solution Substances 0.000 description 8
- 229920001732 Lignosulfonate Polymers 0.000 description 7
- 239000007983 Tris buffer Substances 0.000 description 7
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 125000004400 (C1-C12) alkyl group Chemical group 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- 150000004665 fatty acids Chemical class 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical class NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 239000007859 condensation product Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 3
- GQEZCXVZFLOKMC-UHFFFAOYSA-N 1-hexadecene Chemical compound CCCCCCCCCCCCCCC=C GQEZCXVZFLOKMC-UHFFFAOYSA-N 0.000 description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical class CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 3
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical class CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- NOPFSRXAKWQILS-UHFFFAOYSA-N docosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCO NOPFSRXAKWQILS-UHFFFAOYSA-N 0.000 description 3
- 150000002191 fatty alcohols Chemical class 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 150000004671 saturated fatty acids Chemical class 0.000 description 3
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 3
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 3
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 3
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 description 2
- HFDVRLIODXPAHB-UHFFFAOYSA-N 1-tetradecene Chemical compound CCCCCCCCCCCCC=C HFDVRLIODXPAHB-UHFFFAOYSA-N 0.000 description 2
- HMWIHOZPGQRZLR-UHFFFAOYSA-N 2-hexadecylphenol Chemical compound CCCCCCCCCCCCCCCCC1=CC=CC=C1O HMWIHOZPGQRZLR-UHFFFAOYSA-N 0.000 description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical class C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical class C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical class [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical class CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical class NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical class CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005555 metalworking Methods 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- HVAMZGADVCBITI-UHFFFAOYSA-N pent-4-enoic acid Chemical compound OC(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000007519 polyprotic acids Polymers 0.000 description 2
- 235000003441 saturated fatty acids Nutrition 0.000 description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1 -dodecene Natural products CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 description 1
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 description 1
- HNSDLXPSAYFUHK-UHFFFAOYSA-N 1,4-bis(2-ethylhexyl) sulfosuccinate Chemical compound CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC HNSDLXPSAYFUHK-UHFFFAOYSA-N 0.000 description 1
- NNARPPSIYMCXMB-UHFFFAOYSA-N 1,4-bis(2-methylpropoxy)-1,4-dioxobutane-2-sulfonic acid Chemical compound CC(C)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(C)C NNARPPSIYMCXMB-UHFFFAOYSA-N 0.000 description 1
- OXLXSOPFNVKUMU-UHFFFAOYSA-N 1,4-dioctoxy-1,4-dioxobutane-2-sulfonic acid Chemical compound CCCCCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCCCCC OXLXSOPFNVKUMU-UHFFFAOYSA-N 0.000 description 1
- CBCQTCPKFYFJEU-UHFFFAOYSA-N 1,4-dioxo-1,4-dipentoxybutane-2-sulfonic acid Chemical compound CCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCC CBCQTCPKFYFJEU-UHFFFAOYSA-N 0.000 description 1
- UJQYEZUWSJMSEW-UHFFFAOYSA-N 1,4-dioxo-1,4-dipropoxybutane-2-sulfonic acid Chemical compound CCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCC UJQYEZUWSJMSEW-UHFFFAOYSA-N 0.000 description 1
- UWWCBGSFTXGKLY-UHFFFAOYSA-N 1-(1,3-benzothiazol-2-ylsulfanyl)propane-1,2,3-tricarboxylic acid Chemical compound C1=CC=C2SC(SC(C(CC(=O)O)C(O)=O)C(O)=O)=NC2=C1 UWWCBGSFTXGKLY-UHFFFAOYSA-N 0.000 description 1
- NNMIANBFDASNNU-UHFFFAOYSA-N 1-(1,3-benzoxazol-2-ylsulfanyl)propane-1,2,3-tricarboxylic acid Chemical compound C1=CC=C2OC(SC(C(CC(=O)O)C(O)=O)C(O)=O)=NC2=C1 NNMIANBFDASNNU-UHFFFAOYSA-N 0.000 description 1
- PSOCLSFXSYXUDL-UHFFFAOYSA-N 1-(1h-benzimidazol-2-ylsulfanyl)propane-1,2,3-tricarboxylic acid Chemical compound C1=CC=C2NC(SC(C(CC(=O)O)C(O)=O)C(O)=O)=NC2=C1 PSOCLSFXSYXUDL-UHFFFAOYSA-N 0.000 description 1
- ZMESHQOXZMOOQQ-UHFFFAOYSA-N 1-(naphthalen-1-ylmethyl)naphthalene Chemical compound C1=CC=C2C(CC=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 ZMESHQOXZMOOQQ-UHFFFAOYSA-N 0.000 description 1
- OGYMWUMPVDTUCW-UHFFFAOYSA-N 2,2-bis(2-ethylhexyl)-3-sulfobutanedioic acid Chemical compound CCCCC(CC)CC(C(O)=O)(C(C(O)=O)S(O)(=O)=O)CC(CC)CCCC OGYMWUMPVDTUCW-UHFFFAOYSA-N 0.000 description 1
- CNYROOSMBDOYOH-UHFFFAOYSA-N 2,2-bis(2-methylpropyl)-3-sulfobutanedioic acid Chemical compound CC(C)CC(CC(C)C)(C(C(O)=O)S(O)(=O)=O)C(O)=O CNYROOSMBDOYOH-UHFFFAOYSA-N 0.000 description 1
- CTTJWXVQRJUJQW-UHFFFAOYSA-N 2,2-dioctyl-3-sulfobutanedioic acid Chemical compound CCCCCCCCC(C(O)=O)(C(C(O)=O)S(O)(=O)=O)CCCCCCCC CTTJWXVQRJUJQW-UHFFFAOYSA-N 0.000 description 1
- IABHKSXPLISBAX-UHFFFAOYSA-N 2,2-dipentyl-3-sulfobutanedioic acid Chemical compound CCCCCC(C(O)=O)(C(C(O)=O)S(O)(=O)=O)CCCCC IABHKSXPLISBAX-UHFFFAOYSA-N 0.000 description 1
- ZNATYWVQJWTNPA-UHFFFAOYSA-N 2,2-dipropyl-3-sulfobutanedioic acid Chemical compound CCCC(CCC)(C(C(O)=O)S(O)(=O)=O)C(O)=O ZNATYWVQJWTNPA-UHFFFAOYSA-N 0.000 description 1
- DKOHQFNUUIPFAC-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-ylsulfanyl)-2,3-dimethylbutanedioic acid Chemical compound C1=CC=C2SC(SC(C)(C(C(O)=O)C)C(O)=O)=NC2=C1 DKOHQFNUUIPFAC-UHFFFAOYSA-N 0.000 description 1
- DHLUNMWFPSXXOJ-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-ylsulfanyl)-3-(hydroxymethyl)butanedioic acid Chemical compound C1=CC=C2SC(SC(C(CO)C(O)=O)C(O)=O)=NC2=C1 DHLUNMWFPSXXOJ-UHFFFAOYSA-N 0.000 description 1
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- 239000000600 sorbitol Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 229940095068 tetradecene Drugs 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical class CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 150000003628 tricarboxylic acids Chemical class 0.000 description 1
- ABVVEAHYODGCLZ-UHFFFAOYSA-N tridecan-1-amine Chemical class CCCCCCCCCCCCCN ABVVEAHYODGCLZ-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
Definitions
- Dispersions which contain 40-53% by weight of a compound of the formula I or II, 45-58% by weight of water, 0.1 to 2% by weight of a dispersant and 0.01 to 0.5% by weight of a thickener are preferred.
- the dispersion contains salts of polycarboxylic acids, it can be partial salts or full salts. Above all, sodium salts are suitable as alkali metal salts.
- Amine salts can be salts of primary, secondary or tertiary amines, e.g.
- the corrosion inhibitor can contain 10-50%, in particular 20-40%, of anthranilic acid.
- the dispersions according to the invention may also contain other auxiliaries, for example hydrotropic agents, such as e.g. Urea or sodium xylene sulfonate; Antifreezing agents, e.g. Ethylene or propylene glycol, diethylene glycol, glycerin or sorbitol; Humectants, e.g. Polyethylene glycols or glycerin; Biocides such as Chloroacetamide, formalin or 1,2-benzisothiazolin-3-one; or complexing agents, e.g. Trisodium nitrilotriacetate.
- hydrotropic agents such as e.g. Urea or sodium xylene sulfonate
- Antifreezing agents e.g. Ethylene or propylene glycol, diethylene glycol, glycerin or sorbitol
- Humectants e.g. Polyethylene glycols or glycerin
- Biocides such as Chloro
- biocides especially fungicides, which are intended to prevent fungal growth in the aqueous dispersion.
- the biocid is preferably used in an amount of 0.05 to 0.5% by weight of the dispersion.
- the filter cake already has the desired water content, it is of course not necessary to add water.
- the polycarboxylic acid can be pressed so strongly that only 40% or less water remains in the filter cake.
- the filter cake is stirred, enough water is then slowly added to produce a flowable dispersion. Once you have determined the optimal amount, you can choose the pressure when filtering so that the filter cake already has the desired water content.
- the stirring is preferably carried out at room temperature, but it can be advantageous in certain cases to cool the material to be stirred gently.
- the dispersions thus produced are stable for several months at room temperature and at temperatures up to 40 ° C. They keep their fluidity and do not separate. This is important for the storage and transportation of the dispersions Property.
- the dispersions can be handled as a liquid and e.g. can be pumped during dosing. Another advantage is that the dispersions dissolve very quickly in alkaline aqueous systems. If the dispersions consist of the salts of the polycarboxylic acids, they also dissolve in neutral aqueous systems. The dissolution can be accelerated by stirring.
- Example 1 99.2 parts of a 50% water-containing filter cake of 2,4,6-tris (5-carboxypentylamino) -1,3,5-triazine (Reocor® 190, Ciba-Geigy AG) are in a turbine agitator Fa-Polytron stirred at a stirring speed of 1000 rpm to flowability. This takes about 15 minutes.
- a dispersant based on a 40% aqueous solution of dinaphthylmethane disulphosaem sodium (Dispersant CC, Ciba-Geigy AG) is added and after stirring for a further 15 minutes, 0.1 part of a polysaccharide of the xanthan type (Rhodopol® 23 , Rhone-Poulenc) as a thickener and 0.2 part of a 35% aqueous dispersion of 1,2-benzisothiazolin-3-one (Proxel® BD, JCJ Ltd.) as a biocide and stirred for another 15 minutes.
- a dispersant based on a 40% aqueous solution of dinaphthylmethane disulphosaem sodium (Dispersant CC, Ciba-Geigy AG) is added and after stirring for a further 15 minutes, 0.1 part of a polysaccharide of the xanthan type (Rh
- Example 2 The procedure is as in Example 1. 90.6 parts of a Reocor® 190 filter cake with 50% water content are mixed with 1 part of an anionic surfactant based on a formaldehyde condensation product of an aromatic sulfonic acid 10% aqueous solution (Dispersant H, Ciba-Geigy AG), 0.2 parts Rhodopol® 23 and 0.2 parts Proxel® BD.
- Example 3 The procedure is as in Example 1, mixing the following components: 99.1 parts of Reocor® 190 filter cake with 50% water content 0.5 part of an ethylene oxide-propylene oxide block copolymer (Pluronic® F 108, BASF-Wyandotte Corp.) as a dispersant 0.2 parts Rhodopol® 23 as a thickener 0.2 parts of Proxel® BD as a biocid The resulting dispersion has a viscosity of 250 mPa / s.
- Example 10 In a 1.5 l glass vessel with a stainless steel screw agitator, 3 g of a lignin sulfonate (Reax® 85-A) are dissolved in 44 g of water. At a stirring speed of approx. 50-70 U / pm, 900 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes. This results in a liquid dispersion, which for approx. 30 min at 50-70 Rpm is homogenized. The solution of 1 g Rhodopol® 23 in 50 g water is added. The dispersion is then stirred at 75 rpm for 1 h.
- a lignin sulfonate Reax® 85-A
- a flowable dispersion is formed with a content of 40% of the corrosion inhibitor, 59% water, 0.4% dispersant, 0.1% thickener, 0.2% biocide and 0.2% lubricant (polyethylene oxide).
- Example 12 In a 600 ml glass vessel with a stainless steel screw agitator, 1.2 g of a lignin sulfonate (Reax® 85-A) is dissolved in 91 g of water. At a stirring speed of approx. 50-70 rpm, 256 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes. This results in a liquid dispersion to which 32 g of anthranilic acid are added within 15 minutes .
- Reax® 85-A a lignin sulfonate
- the mixture is then homogenized at 50-70 rpm for 30 minutes. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred at 75 rpm for 1 h. The dispersion prepared in this way has a viscosity of 200 mPa.s ⁇ 1 (at 25 ° C).
- the dispersion contains 40% of the corrosion inhibitor (ratio 80 parts Reocor 190 and 20 parts anthranilic acid); 59.6% water, O, 3% dispersant, 0.1% thickener.
- Example 13 In a glass vessel (600 ml) with a stainless steel screw agitator, 1.2 g of a lignin sulfonate (Reax® 85-A) is dissolved in 123 g of water. At a stirring speed of approx. 50-70 U / pm, 192 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes liquid dispersion to which 64 g of anthranilic acid (99% content) are added within 15 minutes. The mixture is then homogenized at 50-70 rpm for 30 minutes. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred at 75 rpm for 1 h.
- a lignin sulfonate Reax® 85-A
- the dispersion has a content of 45% of the corrosion inhibitor, 54.6% water, O, 3% dispersant, 0.1% thickener.
- a solution of disodium hydrogen phosphate is added to Reocor 190 filter cake in aqueous suspension; the monosodium salt formed is isolated and can be liquefied using Reax as the dispersant.
- the stoichiometric amount of diethanolamine is added to Reocor 190 filter cake in aqueous suspension; the mono-diethanolamine salt formed is isolated and can be liquefied using Reax as a dispersant.
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- Materials Engineering (AREA)
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Description
Die Erfindung betrifft fließfähige hochprozentige wäßrige Dispersionen von Polycarbonsäure-Korrosionsinhibitoren, sowie ein spezielles Verfahren zu ihrer Herstellung.The invention relates to flowable, high-percentage aqueous dispersions of polycarboxylic acid corrosion inhibitors and to a special process for their preparation.
Es ist bekannt, daß sich bestimmte Polycarbonsäuren als Korrosionsinhibitoren für wäßrige Systeme, die mit Metallen in Kontakt sind, gut eignen, beispielsweise die im US-A-4 402 907 oder EP-A-129 506 beschriebenen heterocyclischen Polycarbonsäuren. Wäßrige Systeme, die im Kontakt mit Metallen stehen, sind z.B. Kühlwassersysteme, Dampferzeugungsanlagen, Metallbearbeitungsmittel oder wäßrige Hydraulikflüssigkeiten. Da die meisten Polycarbonsäuren in Wasser nur eine beschränkte Löslichkeit haben, verwendet man die Polycarbonsäuren in Form ihrer wasserlöslichen Salze, das heißt man neutralisiert sie vor dem Gebrauch (vgl. JP-OS 55,89478, Chem. Abstr. 94: 35219w)) oder man setzt sie einem basischen Wassersystem zu. Lager- und Handelsform sind jedoch im allgemeinen die freien Polycarbonsäuren.It is known that certain polycarboxylic acids are well suited as corrosion inhibitors for aqueous systems which are in contact with metals, for example the heterocyclic polycarboxylic acids described in US Pat. No. 4,402,907 or EP-A-129,506. Aqueous systems that are in contact with metals are e.g. Cooling water systems, steam generating plants, metalworking agents or aqueous hydraulic fluids. Since most polycarboxylic acids have only a limited solubility in water, the polycarboxylic acids are used in the form of their water-soluble salts, that is to say they are neutralized before use (cf. JP-OS 55.89478, Chem. Abstr. 94: 35219w) or they are added to a basic water system. The free polycarboxylic acids are, however, generally the storage and commercial forms.
Die freien Polycarbonsäuren sind im allgemeinen feste Stoffe. Bei ihrer Herstellung werden sie meist durch Filtration aus einer wäßrigen Phase isoliert. Das filtrierte Produkt wird üblicherweise mit Wasser gewaschen und dann einer Trocknung unterzogen. Um die für die Trocknung benötigte Energie zu sparen, hat man neuerdings für die Verwendung in wäßrigen Systemen den feuchten Filterkuchen, der etwa 50 % Wasser enthält, als Handelsform angeboten.The free polycarboxylic acids are generally solid substances. During their manufacture, they are usually isolated from an aqueous phase by filtration. The filtered product is usually washed with water and then subjected to drying. In order to save the energy required for drying, the moist filter cake, which contains about 50% water, has recently been offered as a commercial form for use in aqueous systems.
Der feuchte Filterkuchen hat jedoch den Nachteil, daß er nicht fließfähig ist. Er kann nicht geschüttet oder gegossen werden sondern wird z.B. mit der Schaufel manuell dosiert oder umgefüllt.However, the moist filter cake has the disadvantage that it is not flowable. It cannot be poured or poured, but is e.g. manually dosed or decanted with the shovel.
Es wurde gefunden, daß man hochprozentige Dispersionen bestimmter fester Polycarbonsäure-Korrosionsinhibitoren durch ein spezielles Verfahren aus den feuchten Filterkuchen herstellen kann. Diese Dispersionen sind fließfähig und können daher mit den für Flüssigkeiten üblichen Geräten transportiert und dosiert werden. Diese physikalischen Eigenschaften behalten die so hergestellten Dispersionen über Zeiträume von mehreren Monaten bei, d.h. sie neigen nicht zu einer Entmischung oder Verfestigung.It has been found that high-percentage dispersions of certain solid polycarboxylic acid corrosion inhibitors can be produced from the moist filter cake by a special process. These dispersions are flowable and can therefore be transported and dosed with the usual equipment for liquids. The dispersions produced in this way retain these physical properties for periods of several months, ie they do not tend to separate or solidify.
Gegenstand der Erfindung sind daher fließfähige wäßrige Dispersionen der unten näher bezeichneten Polycarbonsäure-Korrosionsinhibitoren, enthaltend 25-57 Gew.-% des Korrosionsinhibitors, 40-72 Gew.-% Wasser, 0.1-2 Gew.-% eines Dispergiermittels und 0.01 bis 0.5 Gew.-% eines Verdickungsmittels.The invention therefore relates to flowable aqueous dispersions of the polycarboxylic acid corrosion inhibitors described in more detail below, containing 25-57% by weight of the corrosion inhibitor, 40-72% by weight of water, 0.1-2% by weight of a dispersant and 0.01 to 0.5% by weight .-% of a thickener.
Bevorzugt sind Dispersionen, die 40-53 Gew.-% einer Verbindung der Formel I oder II, 45-58 Gew.-% Wasser, 0.1 bis 2 Gew.-% eines Dispergiermittels und 0.01 bis 0.5 Gew.-% eines Verdickungsmittels enthalten.Dispersions which contain 40-53% by weight of a compound of the formula I or II, 45-58% by weight of water, 0.1 to 2% by weight of a dispersant and 0.01 to 0.5% by weight of a thickener are preferred.
Bei den Polycarbonsäure-Kotrosionsinhibitoren handelt es sich um Di- oder Tricarbonsäuren der Formel I oder II,
worin Z C₁-C₁₁-Alkylen, Cyclohexylen oder Phenylen bedeutet,
R₁ und R₂ unabhängig voneinander H, C₁-C₄-Alkyl oder eine Gruppe -Z-COOH bedeutet,
R₃ C₁-C₁₂-Alkyl, Phenyl oder eine Gruppe -N(R₄)(R₅), -OR₆ oder -SR₆ bedeutet,
R₄ und R₅ unabhängig voneinander H, C₁-C₁₂-Alkyl, C₂-C₄-Hydroxyalkyl, Cyclohexyl, Phenyl oder eine Gruppe -Z-COOH bedeuten oder R₄ und R₅ zusammen C₄-C₆-Alkylen oder 3-Oxapentylen bedeuten,
R₆ Wasserstoff, C₁-C₁₂-Alkyl oder Phenyl bedeutet,
m null oder 1 ist, X Schwefel, Sauerstoff oder NH bedeutet,
R₇ Wasserstoff, C₁-C₄-Alkyl, Halogen, C₁-C₄-Alkoxy, Carboxy, Amino oder Nitro bedeutet,
R₈, R₉, R₁₀ und R₁₁ unabhängig voneinander Wasserstoff, C₁-C₁₂-Alkyl, C₁-C₄-Hydroxyalkyl, C₂-C₆-Carboxyalkyl, C₂-C₁₀-Alkoxyalkyl, Carboxyl, Phenyl oder Benzyl bedeuten oder R₈ und R₉ zusammen eine direkte Bindung bedeuten, wobei mindestens 2 der Gruppen R₈, R₉, R₁₀ und R₁₁ eine Carboxyl- oder Carboxylalkylgruppe sind, sowie um die Alkalimetall-, Ammonium- oder Aminsalze dieser Polycarbonsäuren.The polycarboxylic acid corrosion inhibitors are di- or tricarboxylic acids of the formula I or II,
wherein Z is C₁-C₁₁ alkylene, cyclohexylene or phenylene,
R₁ and R₂ independently of one another are H, C₁-C₄-alkyl or a group -Z-COOH,
R₃ is C₁-C₁₂-alkyl, phenyl or a group -N (R₄) (R₅), -OR₆ or -SR₆,
R₄ and R₅ independently of one another are H, C₁-C₁₂-alkyl, C₂-C₄-hydroxyalkyl, cyclohexyl, phenyl or a group -Z-COOH or R₄ and R₅ together are C₄-C₆-alkylene or 3-oxapentylene,
R₆ is hydrogen, C₁-C₁₂-alkyl or phenyl,
m is zero or 1, X is sulfur, oxygen or NH,
R₇ is hydrogen, C₁-C₄-alkyl, halogen, C₁-C₄-alkoxy, carboxy, amino or nitro,
R₈, R₉, R₁₀ and R₁₁ independently of one another are hydrogen, C₁-C₁₂-alkyl, C₁-C₄-hydroxyalkyl, C₂-C₆-carboxyalkyl, C₂-C₁₀-alkoxyalkyl, carboxyl, phenyl or benzyl or R₈ and R₉ together mean a direct bond , with at least 2 of the Groups R₈, R₉, R₁₀ and R₁₁ are a carboxyl or carboxylalkyl group, as well as the alkali metal, ammonium or amine salts of these polycarboxylic acids.
Soferne die Dispersion Salze von Polycarbonsäuren enthält, kann es sich um Partialsalze oder Vollsalze handeln. Als Alkalimetallsalze kommen vor allem Natriumsalze in Frage. Aminsalze können Salze von primären, sekundären oder tertiären Aminen sein, z.B. Salze von Butylamin, Octylamin, Dodecylamin, Tridecylamin, Tetradecylamin, Octadecylamin, Diethylamin, Dibutylamin, Dihexylamin, Dioctylamin, Triethylamin, Tributylamin, Trihexylamin, Cyclohexylamin, Piperidin, Morpholin, Ethanolamin, Propanolamin, Di- oder Triethanolamin.If the dispersion contains salts of polycarboxylic acids, it can be partial salts or full salts. Above all, sodium salts are suitable as alkali metal salts. Amine salts can be salts of primary, secondary or tertiary amines, e.g. Salts of butylamine, octylamine, dodecylamine, tridecylamine, tetradecylamine, octadecylamine, diethylamine, dibutylamine, dihexylamine, dioctylamine, triethylamine, tributylamine, trihexylamine, cyclohexylamine, piperidine, morpholine, ethanolamine, triethanamine or di-.
Besonders bevorzugt handelt es sich bei den Korrosionsinhibitoren um Verbindungen der Formel I, oder II, worin
Z C₁-C₈-Alkylen bedeutet, R₁ und R₂ Wasserstoff oder C₁-C₄-Alkyl bedeuten,
R₃ eine Gruppe -N(R₄)(R₅) ist, R₄ Wasserstoff, Cyclohexyl oder C₁-C₁₂-Alkyl bedeutet,
R₅ C₁-C₁₂-Alkyl, Phenyl oder eine Gruppe -Z-COOH bedeutet oder R₄ und R₅ zusammen 1,5-Pentylen oder 3-Oxa-1,5-pentylen bedeuten,
m null oder 1 ist, X Schwefel ist, R₇ Wasserstoff, Methyl oder Chlor bedeutet, R₈ und R₁₀ Wasserstoff sind,
R₉ und R₁₁ Carboxyl oder C₂-C₄-Carboxyalkyl bedeuten, sowie um die Alkalimetall-, Ammonium- oder Aminsalze solcher Polycarbonsäuren.The corrosion inhibitors are particularly preferably compounds of the formula I or II, in which
Z is C₁-C₈-alkylene, R₁ and R₂ are hydrogen or C₁-C₄-alkyl,
R₃ is a group -N (R₄) (R₅), R₄ is hydrogen, cyclohexyl or C₁-C₁₂-alkyl,
R₅ is C₁-C₁₂-alkyl, phenyl or a group -Z-COOH or R₄ and R₅ together are 1,5-pentylene or 3-oxa-1,5-pentylene,
m is zero or 1, X is sulfur, R₇ is hydrogen, methyl or chlorine, R₈ and R₁₀ are hydrogen,
R₉ and R₁₁ are carboxyl or C₂-C₄-carboxyalkyl, as well as the alkali metal, ammonium or amine salts of such polycarboxylic acids.
Besonders vorteilhaft werden Korrosionsinhibitoren der Formeln I oder II eingesetzt, worin Z Pentamethylen, R₁ und R₂ Wasserstoff, R₃ eine Gruppe -NH-(CH₂)₅-COOH, X Schwefel, R₇ Wasserstoff, m null oder 1, R₈ und R₁₀ Wasserstoff, R₉ Carboxyl, R₁₁ Carboxymethyl bedeuten, oder ein Alkalimetall-, Ammonium- oder Aminsalz einer solchen Polycarbonsäure ist.Corrosion inhibitors of the formulas I or II are used particularly advantageously, in which Z is pentamethylene, R₁ and R₂ hydrogen, R₃ is a group -NH- (CH₂) ₅-COOH, X sulfur, R₇ hydrogen, m zero or 1, R₈ and R₁₀ hydrogen, R₉ Carboxyl, R₁₁ mean carboxymethyl, or is an alkali metal, ammonium or amine salt of such a polycarboxylic acid.
Die Verbindungen der Formel I sind als Korrosionsinhibitoren für wäßrige Systeme bekannt aus dem US-A-4 402 907. Dort sind auch Literaturstellen angegeben, in denen die Herstellung dieser Verbindungen beschrieben ist.The compounds of the formula I are known as corrosion inhibitors for aqueous systems from US Pat. No. 4,402,907. References are also given there, in which the preparation of these compounds is described.
Beispiele für Verbindungen der Formel I sind:
2,4,6-Tris(5'-carboxypentylamino)-1,3,5-triazin, 2,4,6-Tris(carboxymethylamino)-1,3,5-triazin, 2,4,6-Tris(3'carboxypropylamino)-1,3,5-triazin, 2,4,6-Tris(2'-carboxyethylamino)-1,3,5-triazin, 2,4,6-Tris(4'-carboxybutylamino)1,3,5-triazin, 2,4,6-Tris(11'-carboxyundecylamino)-1,3,5-triazin, 2,4,6-Tris(5'-carboxypentyl-N-methylamino)--1,3,5-triazin, 2,4,6-Tris(carboxymethyl-N-methylamino)-1,3,5-triazin, 2,4,6-Tris(3'-carboxypropyl-N-methylamino)-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-ethylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-cyclohexylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-diethylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-(2''-hydroxyethylamino)-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-diethylamino-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-butylamino-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-ethylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-anilino-1,3,5-triazin, 2,4-Bis(3'-carboxypropylamino)-6-ethylamino-1,3,5-triazin, 2,4-Bis(3'-carboxypropylamino)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(3'-carboxypropylamino)-6-n-propylamino-1,3,5-triazin, 2,4-Bis(carboxymethyl)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(carboxymethyl)-6-cyclohexylamino-1,3,5-triazin, 2,4-Bis(carboxymethyl)-6-dodecylamino-1,3,5-triazin, 2,4-Bis(5'-carboxypentyl-n-methylamino)-6-ethylamino-1,3,5-triazin, 2,4-Bis(3'-carboxypropyl-N-methylamino)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(carboxymethyl-N-methylamino)-6-n-octylamino-1,3,5-triazin, 2,4-Bis(2'-carboxyethyl-N-methylamino)-6-n-octyl-amino-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-(2''-carboxyethylamino)-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-(carboxymethylamino)-1,3,5-triazin, 2,4-Bis(3'-carboxypropylamino)-6-(2''-carboxyethylamino)-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-(5''-carboxypentylamino)-1,3,5-thazin, 2,4-Bis(3'-carboxypropylamino)-6-(5''-carboxypentylamino)-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-methoxy-1,3,5-triazin, 2,4-Bis(2'-carboxyethylamino)-6-butylthio-1,3,5-triazin, 2,4-Bis(2'-carboxypentylamino)-6-n-octyloxy-1,3,5-triazin, 2,4-Bis(3'-carboxypropylamino)-6-n-dodecylthio-1,3,5-triazin, 2,4-Bis(5'-carboxyethylamino)-6-phenyoxy-1,3,5-triazin, 2,4-Bis(5'-carboxypentylamino)-6-methylthio-1,3,5-thazin, 2,4-Bis(5'-carboxypentylamino)-6-ethoxy-1,3,5-triazin sowie Salze dieser Säuren.Examples of compounds of the formula I are:
2,4,6-tris (5'-carboxypentylamino) -1,3,5-triazine, 2,4,6-tris (carboxymethylamino) -1,3,5-triazine, 2,4,6-tris (3rd 'carboxypropylamino) -1,3,5-triazine, 2,4,6-tris (2'-carboxyethylamino) -1,3,5-triazine, 2,4,6-tris (4'-carboxybutylamino) 1,3,5-triazine, 2,4,6-tris (11'-carboxyundecylamino) -1,3,5-triazine, 2,4,6-tris (5'-carboxypentyl-N-methylamino) - 1,3,5-triazine, 2,4,6-tris (carboxymethyl-N-methylamino) -1,3,5-triazine, 2,4,6-tris (3'-carboxypropyl-N-methylamino) -1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6-ethylamino-1,3,5-triazine, 2,4-bis (5th '-carboxypentylamino) -6-n-octylamino-1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6-cyclohexylamino-1,3,5-triazine, 2,4-bis (5th '-carboxypentylamino) -6-diethylamino-1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6- (2''- hydroxyethylamino) -1,3,5-triazine, 2,4 -Bis (2'-carboxyethylamino) -6-n-octylamino-1,3,5-triazine, 2,4-bis (2'-carboxyethylamino) -6-diethylamino-1,3,5-triazine, 2,4 -Bis (2'-carboxyethylamino) -6-butylamino-1,3,5-triazine, 2,4-bis (2'-carboxyethylamino) -6-ethylamino-1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6-anilino-1,3,5-triazine, 2,4-bis (3'-carboxypropylamino) -6-ethylamino-1,3,5-triazine, 2,4-bis (3rd '-carboxypropylamino) -6-n-octylamino-1,3,5-triazine, 2 , 4-bis (3'-carboxypropylamino) -6-n-propylamino-1,3,5-triazine, 2,4-bis (carboxymethyl) -6-n-octylamino-1,3,5-triazine, 2, 4-bis (carboxymethyl) -6-cyclohexylamino-1,3,5-triazine, 2,4-bis (carboxymethyl) -6-dodecylamino-1,3,5-triazine, 2,4-bis (5'-carboxypentyl -n-methylamino) -6-ethylamino-1,3,5-triazine, 2,4-bis (3'-carboxypropyl-N-methylamino) -6-n-octylamino-1,3,5-triazine, 2, 4-bis (carboxymethyl-N-methylamino) -6-n-octylamino-1,3,5-triazine, 2,4-bis (2'-carboxyethyl-N-methylamino) -6-n-octylamino-1 , 3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6- (2 '' - carboxyethylamino) -1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6 - (carboxymethylamino) -1,3,5-triazine, 2,4-bis (3'-carboxypropylamino) -6- (2 '' - carboxyethylamino) -1,3,5-triazine, 2,4-bis (2nd '-carboxyethylamino) -6- (5''- carboxypentylamino) -1,3,5-thazine, 2,4-bis (3'-carboxypropylamino) -6- (5''- carboxypentylamino) -1,3,5 -triazine, 2,4-bis (5'-carboxypentylamino) -6-methoxy-1,3,5-triazine, 2,4-bis (2'-carboxyethylamino) -6-butylthio-1,3,5-triazine , 2,4-bis (2'-carboxypentylamino) -6 -n-octyloxy-1,3,5-triazine, 2,4-bis (3'-carboxypropylamino) -6-n-dodecylthio-1,3,5-triazine, 2,4-bis (5'-carboxyethylamino) -6-phenyoxy-1,3,5-triazine, 2,4-bis (5'-carboxypentylamino) -6-methylthio-1,3,5-thazine, 2,4-bis (5'-carboxypentylamino) -6 -ethoxy-1,3,5-triazine and salts of these acids.
Die Verbindungen der Formel II sind als Korrosionsinhibitoren für wäßrige Systeme bekannt aus der EP-A-129 506. Dort ist auch ihre Herstellung beschrieben.The compounds of formula II are known as corrosion inhibitors for aqueous systems from EP-A-129 506. Their preparation is also described there.
Beispiele für einzelne Verbindungen der Formel II sind Benzthiazol-2-ylthiobernsteinsäure, 5-Methylbenthiazol-2-ylthiobernsteinsäure, 6-Ethylbenzthiazol-2-ylthiobemsteinsäure, 4-Isopropylbenzthiazol-2-ylthiobernsteinsäure, 7-t-Butylbenzthiazol-2-ylthiobernsteinsäure, 6-Methoxybenzthiazol-2-ylthiobernsteinsäure, 7-Ethoxybenzthiazol-2-ylthiobernsteinsäure, 4-Flurorobenzthiazol-2-ylthiobernsteinsäure, 5-Chlorobenzthiazol-2-ylthiobernsteinsäure, 7-Bromobenzthiazol-2-ylthiobemsteinsäure, 6-Chlorobenzthiazol-2-ylthiobernsteinsäure, 6-Nitrobenzthiazol-2-ylthiobernsteinsäure, 5-Carboxybenzthiazol-2-ylthiobernsteinsäure, 6-Aminobenzthiazol-2-ylthiobernsteinsäure, 1-(Benzthiazol-2-ylthio)-propan-1,2-dicarbonsäure, 3-(Benzthiazol-2-ylthio)-propan-1,2-dicarbonsäure, 3-(6-Aminobenzthiazol-2-yl)-propan-1,2-dicarbonsäure, 1-(Benzthiazol-2-ylthio)-propan-1,3-dicarbonsäure, 2-(Benthiazol-2-ylthio)-propan-1,3-dicarbonsäure, 2-(Benzthiazol-2-ylthio)-butan-2,3-dicarbonsäure, 1-(Benzthiazol-2-ylthio)-butan-2,4-dicarbonsäure, 4-(Benzthiazol-2-ylthio)-butan-1,2,3-tricarbonsäure, 1-(Benzthiazol-2-ylthio)-hexan-1,6-dicarbonsäure, 1-(Benzthiazol-2-ylthio)-propan-1,2,3-tricarbonsäure, 1-(Benzthiazol-2-ylthio)-3-hydroxypropan-1,2-dicarbonsäure, 1-(Benzthiazol-2-ylthio)-2-phenylbernsteinsäure, 1-(Benzthiazol-2-ylthio)-2-benzylbernsteinsäure, Benzoxazol-2-ylthiobernsteinsäure, 5-Methylbenzoxazol-2-ylthiobemsteinsäure, 4-Isopropylbenzoxazol-2-ylthiobernsteinsäure, 6-Ethoxybenzoxazol-2-ylthiobernsteinsäure, 5-Chlorobenzoxazol-2-ylthiobernsteinsäure, 5-Carboxybenzoxazol-2-ylthiobernsteinsäure, 6-Aminobenzoxazol-2-ylthiobernsteinsäure, 1-(Benzoxazol-2-ylthio)-propan-1,2-dicarbonsäure, 3-(Benzoxazol-2-ylthio)-propan-1,2-dicarbonsäure, 2-(Benzoxazol-2-ylthio)-propan-1,3-dicarbonsäure, 2-(Benzoxazol-2-ylthio)-butan-2,3-dicarbonsäure, 1-(Benzoxazol-2-ylthio)-propan-1,2,3-tricarbonsäure, Benzimidazol-2-ylthiobernsteinsäure, 1-(Benzimidazol-2-ylthio)-propan-1,2-dicarbonsäure, 3-(Benzimidazol-2-ylthio)-propan-1,2-dicarbonsäure, 1-(Benzimidazol-2-ylthio)-propan-1,3-dicarbonsäure, 1-(Benzimidazol-2-ylthio)-butan-1,2-dicarbonsäure, 4-(Benzimidazol-2-ylthio)-butan-1,2,3-dicarbonsäure, 2-(Benzimidazol-2-ylthio)-butan-2,3-dicarbonsäure, 1-(Benzimidazol-2-ylthio)-propan-1,2,3-tricarbonsäure, 1-(Benzimidazol-2-ylthio)-phenylbernsteinsäure sowie Salze dieser Säuren.Examples of individual compounds of the formula II are benzothiazol-2-ylthiosuccinic acid, 5-methylbenthiazol-2-ylthiosuccinic acid, 6-ethylbenzthiazol-2-ylthiosuccinic acid, 4-isopropylbenzthiazol-2-ylthiosuccinic acid, 7-t-butylbenzothlothisolol Methoxybenzthiazol-2-ylthiosuccinic acid, 7-ethoxybenzthiazol-2-ylthiosuccinic acid, 4-flurorobenzothiazol-2-ylthiosuccinic acid, 5-chlorobenzthiazol-2-ylthiosuccinic acid, 7-bromobenzthiazol-2-ylthiosuccinic acid, 6-chlorobenzthiazol-2-ylthiosuccinic acid, 6-nitrobenzthiazol-2-ylbenzoic acid, Aminobenzothiazol-2-ylthiosuccinic acid, 1- (benzthiazol-2-ylthio) propane-1,2-dicarboxylic acid, 3- (benzthiazol-2-ylthio) propane-1,2-dicarboxylic acid, 3- (6-aminobenzothiazol-2 -yl) -propane-1,2-dicarboxylic acid, 1- (benzthiazol-2-ylthio) -propane-1,3-dicarboxylic acid, 2- (benthiazol-2-ylthio) -propane-1,3-dicarboxylic acid, 2- (Benzthiazol-2-ylthio) butane-2,3-dicarboxylic acid, 1- (benzthiazol-2-ylthio) butane-2,4-dicarboxylic acid, 4- (benzthiazol-2-ylthio) butane-1,2, 3-tricarboxylic acid, 1- (benzthiazol-2-ylthio) hexane-1,6-dicarboxylic acid, 1- (benzthiazol-2-ylthio) propane-1,2,3-tricarboxylic acid, 1- (benzthiazol-2-ylthio ) -3-hydroxypropan-1,2-dicarboxylic acid, 1- (benzthiazol-2-ylthio) -2-phenylsuccinic acid, 1- (benzthiazol-2-ylthio) -2-benzylsuccinic acid, Be nzoxazol-2-ylthiosuccinic acid, 5-methylbenzoxazol-2-ylthiosuccinic acid, 4-isopropylbenzoxazol-2-ylthiosuccinic acid, 6-ethoxybenzoxazol-2-ylthiosuccinic acid, 5-chlorobenzoxazol-2-yloxobenzoylbenzobenzenes 2-ylthiosuccinic acid, 1- (benzoxazol-2-ylthio) propane-1,2-dicarboxylic acid, 3- (benzoxazol-2-ylthio) propane-1,2-dicarboxylic acid, 2- (benzoxazol-2-ylthio) - propane-1,3-dicarboxylic acid, 2- (benzoxazol-2-ylthio) butane-2,3-dicarboxylic acid, 1- (benzoxazol-2-ylthio) propane-1,2,3-tricarboxylic acid, benzimidazole-2- ylthiosuccinic acid, 1- (benzimidazol-2-ylthio) propane-1,2-dicarboxylic acid, 3- (benzimidazol-2-ylthio) propane-1,2-dicarboxylic acid, 1- (benzimidazol-2-ylthio) propane- 1,3-dicarboxylic acid, 1- (benzimidazol-2-ylthio) butane-1,2-dicarboxylic acid, 4- (benzimidazol-2-ylthio) butane-1,2,3-dicarboxylic acid, 2- (benzimidazol-2 -ylthio) butane-2,3-dicarboxylic acid, 1- (benzimidazol-2-ylthio) propane-1,2,3-tricarboxylic acid, 1- (benzimidazol-2-ylthio) phenyl succinic acid and salts of these acids.
Besonders bevorzugt als Polycarbonsäure-Korrosionsinhibitor ist 2,4,6-Tris(5-carboxy-pentylamino)-1,3,5-triazin oder Benzthiazol-2-yl-thiobernsteinsäure.2,4,6-Tris (5-carboxy-pentylamino) -1,3,5-triazine is particularly preferred as the polycarboxylic acid corrosion inhibitor or benzothiazol-2-yl-thiosuccinic acid.
In einer bevorzugten Anwendung kann der Korrosionsinibitor 10-50%, insbesondere 20-40% Anthranilsäure enthalten.In a preferred application, the corrosion inhibitor can contain 10-50%, in particular 20-40%, of anthranilic acid.
Als Dispergiermittel eignen sich alle oberflächenaktiven Verbindungen, insbesondere anionische und nichtionische Tenside.All surface-active compounds, in particular anionic and nonionic surfactants, are suitable as dispersants.
Beispiele für erfindungsgemäß verwendbare Dispersionsmittel sind die folgenden Verbindungsklassen.
- 1. Anionische Tenside
- 1.1 Kondensationsprodukte von aromatischen Sulfonsäuren mit Formaldehyd, wie Kondensationsprodukte aus Formaldehyd und Naphthalinsulfonsäuren oder aus Formaldehyd, Naphthalinsulfonsäure und Benzolsulfonsäure, oder ein Kondensationsprodukt aus Rohkresol, Formaldehyd und Naphthalinsulfonsäure.
- 1.2 Ligninsulfonate, z.B. solche, die nach dem Sulfit- oder Kraft-Verfahren gewonnen werden. Vorzugsweise handelt es sich um Produkte, die z.T. hydrolysiert, oxidiert oder desulfoniert und nach bekannten Verfahren fraktioniert werden, z.B. nach dem Molekulargewicht oder nach dem Sulfonierungsgrad. Auch Mischungen aus Sulfit- und Kraftligninsulfonaten sind gut wirksam.
- 1.3 Dialkylsulfosuccinate, deren Alkylgruppen verzweigt oder unverzweigt sind, wie z.B. Di-propylsulfosuccinat, Di-isobutylsulfosuccinat, Di-amylsulfosuccinat, Bis-(2-ethylhexyl)-sulfosuccinat oder Di-octylsulfosuccinat.
- 1.4 Sulfatierte oder sulfonierte Fettsäuren oder Fettsäureester von Fettsäuren, wie z.B. sulfatierte Oelsäure, Elaidinsäure oder Ricinolsäure bzw. deren niedere Alkylester, z.B. Ethyl-, Propyl- oder Butylester. Sehr gut geeignet sind auch die entsprechenden sulfatierten oder sulfonierten Oele, wie z.B. Olivenöl, Rüböl und vor allem Ricinusöl.
- 1.5 Umsetzungprodukte von Ethylenoxid und/oder Propylenoxid mit gesättigten oder ungesättigten Fettsäuren, Fettalkoholen, Fettaminen, alicyclischen Alkoholen oder aliphatisch-aromatischen Kohlenwasserstoffen die endständig durch eine anorganische sauerstoffhaltige Säure oder eine mehrbasische Carbonsäure verestert sind. Und zwar handelt es sich vorzugsweise um Verbindungen der Formel
R-A-(CH₂C₂HO)p-Q
worin R ein aliphatischer Kohlenwasserstoffrest mit 8 bis 22 Kohlenstoffatomen oder ein cycloaliphatischer oder aliphatisch-aromatischer Kohlenwasserstoffrest mit 10 bis 22 Kohlenstoffatomen, A -O-, -NH- oder -CO-O-, Q der Säurerest einer anorganischen, mehrbasischen Säure oder der Rest einer mehrbasischen Carbonsäure und p eine Zahl von 1 bis 20, insbesondere 1 bis 5, ist. Der Rest R-A- leitet sich z.B. ab von höheren Alkoholen wie Decyl-, Lauryl-, Tridecyl-, Myristyl-, Cetyl-, Stearyl-, Oleyl-, Arachidyl-, Hydroabietylalkohol oder Behenylalkohol; ferner von Fettaminen wie Stearylamin, Palmitylamin oder Oleylamin; von Fettsäuren, wie Capryl-, Caprin-, Laurin-, Myristin-, Palmitin-, Stearin-, Arachin-, Behen-, Kokosfett-(C₈-C₁₈), Decen-, Dodecen-, Tetradecen-, Hexadecen-, Oel-, Linol-, Linolen-, Eikosen-, Dokosen- oder Clupanodonsäure; oder von Alkylphenolen, wie Butyl-, Hexyl, n-Octyl-, n-Nonyl-, p-tert.Octyl, p-tert.Nonyl-, Decyl-, Dodecyl-, Tetradecyl- oder Hexadecylphenol.
Der Säurerest Q leitet sich in der Regel von niedermolekularen Dicarbonsäuren ab, wie z.B. Maleinsäure, Malonsäure, Bernsteinsäure oder Sulfobernsteinsäure, und ist über eine Esterbrücke mit dem Rest R-A-(CH₂CH₂O)p- verbunden. Insbesondere leitet sich Q jedoch von anorganischen mehrbasischen Säuren, wie Orthophosphorsäure und Schwefelsäure ab. Der Säurerest Q liegt vorzugsweise in Salzform, d.h. z.B. als Alkalimetall-, Ammonium- oder Aminsalz, vor. Beispiele für solche Salze sind Natrium-, Kalium, Ammonium-, Trimethylamin-, Aethanolamin-,Diethanolamin- oder Triethanolaminsalze.
Normalerweise liegen die anionischen Dispergiermittel in Form ihrer Alkalisalze, ihrer Ammonimsalze oder ihrer wasserslöslichen Aminsalze vor. Man verwendet zweckmäßigerweise elekrolytarme Qualitäten. - 2. Nichtionische Tenside.
Ethylenoxid-Addukte aus der Klasse der Anlagerungsprodukte von Ethylenoxid an höhere Fettsäuren, gesättigte oder ungesätttige Fettalkohole, Mercaptane, Fettsäureamide, Fettsäurealkylolamide oder Fettamine oder an Alkylphenole oder Alkylthiophenole wobei auf 1 Mol der genannten Verbindungen bevorzugt 5 bis 100 Mol Ethylenoxid kommen, sowie Ethylenoxid-Propylenoxid-Blockpolymere und Ethylendiamin-Ethylenoxid-Propylenoxid-Addukte. Dazu gehören:- 2.1 Umsetzungsprodukte von gesättigten und/oder ungesättigten Fettalkoholen mit 8 bis 20 C-Atomen, mit 20 bis 100 Mol Ethylenoxid je Mol Alkohol, vorzugsweise gesättigte lineare C₁₆-C₁₈-Alkohole mit 25 bis 80 insbesondere 25 Mol Ethylenoxid je Mol Alkohol;
- 2.2 Umsetzungsprodukte von gesättigten und/oder ungesättigten Fettsäuren mit 8 bis 20 C-Atomen mit 5 bis 20 Mol Ethylenoxid je Mol Säure;
- 2.3 Umsetzungsprodukte von Alkylphenolen mit 7 bis 12 C-Atomen im Alkylrest mit 5 bis 25 Mol Ethylenoxid je Mol phenolische Hydroxygruppe, vorzugsweise Mono- ode Dialkylphenole mit 10 bis 20 Mol Ethylenoxid je Mol phenolische Hydroxylgruppe;
- 2.4 Umsetzungsprodukte von gesättigten und/oder ungesättigten Fettsäureamiden mit 8 bis 20 C-Atomen mit 5 bis 20 Mol Ethylenoxid je Mol Säureamid, vorzugsweise Oelsäureamide mit 8 bis 15 Mol Ethylenoxid je Mol Säureamid.
- 2.5 Umsetzungprodukte von gesättigten und/oder ungesättigten Fettaminen mit 8 bis 20 C-Atomen mit 5 bis 20 Mol Ethylenoxid je Mol Amin, vorzugsweise Oleylamine mit 8 bis 15 Mol Ethylenoxid je Mol Amin;
- 2.6 Ethylenoxid-Propylenoxid-Blockpolymere mit 10-80 % Ethylenoxid und Molekulargewichten von 1000-80000;
- 2.7 Ethylenoxid-Propylenoxid-Addukte an Ethylendiamin.
- 3. Copolymerisate von synthetischen Monomeren, insbesondere von Monomeren mit Carboxylgruppen z.B Copolymerisate von 2-Vinylpyrrolidon mit 3-Vinylpropionsäure oder Maleinsäurecopolymerisate und deren Salze.
- 1. Anionic surfactants
- 1.1 condensation products of aromatic sulfonic acids with formaldehyde, such as condensation products of formaldehyde and naphthalenesulfonic acids or of formaldehyde, naphthalenesulfonic acid and benzenesulfonic acid, or a condensation product of crude cresol, formaldehyde and naphthalenesulfonic acid.
- 1.2 Lignin sulfonates, for example those obtained by the sulfite or Kraft process. They are preferably products which are partially hydrolyzed, oxidized or desulfonated and fractionated by known processes, for example by the molecular weight or by the degree of sulfonation. Mixtures of sulfite and kraft lignin sulfonates are also effective.
- 1.3 dialkyl sulfosuccinates whose alkyl groups are branched or unbranched, such as, for example, di-propyl sulfosuccinate, di-isobutyl sulfosuccinate, di-amyl sulfosuccinate, bis (2-ethylhexyl) sulfosuccinate or di-octyl sulfosuccinate.
- 1.4 Sulphated or sulphonated fatty acids or fatty acid esters of fatty acids, such as sulphated oleic acid, elaidic acid or ricinoleic acid or their lower alkyl esters, eg ethyl, propyl or butyl ester. The corresponding sulfated or sulfonated oils, such as olive oil, rapeseed oil and especially castor oil, are also very suitable.
- 1.5 Reaction products of ethylene oxide and / or propylene oxide with saturated or unsaturated fatty acids, fatty alcohols, fatty amines, alicyclic alcohols or aliphatic-aromatic hydrocarbons which are terminally esterified by an inorganic oxygen-containing acid or a polybasic carboxylic acid. In fact it is preferably compounds of the formula
RA- (CH₂C₂HO) p -Q
wherein R is an aliphatic hydrocarbon residue with 8 to 22 carbon atoms or a cycloaliphatic or aliphatic-aromatic hydrocarbon residue with 10 to 22 carbon atoms, A -O-, -NH- or -CO-O-, Q is the acid residue of an inorganic, polybasic acid or the rest a polybasic carboxylic acid and p is a number from 1 to 20, in particular 1 to 5. The rest RA- is derived, for example, from higher alcohols such as decyl, lauryl, tridecyl, myristyl, cetyl, stearyl, oleyl, arachidyl, hydroabietyl alcohol or behenyl alcohol; also of fatty amines such as stearylamine, palmitylamine or oleylamine; of fatty acids, such as caprylic, capric, lauric, myristic, palmitic, stearic, arachine, behen, coconut fat (C₈-C₁₈), decene, dodecene, tetradecene, hexadecene, oil , Linoleic, linolenic, eicotonic, docosonic or clupanodonic acid; or of alkylphenols, such as butyl, hexyl, n-octyl, n-nonyl, p-tert-octyl, p-tert-nonyl, decyl, dodecyl, tetradecyl or hexadecylphenol.
The acid residue Q is usually derived from low molecular weight dicarboxylic acids, such as maleic acid, malonic acid, succinic acid or sulfosuccinic acid, and is connected via an ester bridge to the rest RA- (CH₂CH₂O) p -. In particular, however, Q is derived from inorganic polybasic acids, such as orthophosphoric acid and sulfuric acid. The acid residue Q is preferably in salt form, ie, for example, as an alkali metal, ammonium or amine salt. Examples of such salts are sodium, potassium, ammonium, trimethylamine, ethanolamine, diethanolamine or triethanolamine salts.
The anionic dispersants are normally in the form of their alkali metal salts, their ammonium salts or their water-soluble amine salts. It is expedient to use low-electrolyte qualities. - 2. Nonionic surfactants.
Ethylene oxide adducts from the class of addition products of ethylene oxide with higher fatty acids, saturated or unsaturated fatty alcohols, mercaptans, fatty acid amides, fatty acid alkylolamides or fatty amines or with alkylphenols or alkylthiophenols, preferably 5 to 100 mol ethylene oxide per mole of the compounds mentioned, and ethylene oxide propylene oxide -Block polymers and ethylenediamine-ethylene oxide-propylene oxide adducts. This includes:- 2.1 reaction products of saturated and / or unsaturated fatty alcohols with 8 to 20 carbon atoms, with 20 to 100 moles of ethylene oxide per mole of alcohol, preferably saturated linear C₁₆-C₁₈ alcohols with 25 to 80 in particular 25 moles of ethylene oxide per mole of alcohol;
- 2.2 reaction products of saturated and / or unsaturated fatty acids with 8 to 20 carbon atoms with 5 to 20 moles of ethylene oxide per mole of acid;
- 2.3 reaction products of alkylphenols with 7 to 12 carbon atoms in the alkyl radical with 5 to 25 moles of ethylene oxide per mole of phenolic hydroxyl group, preferably mono- or dialkylphenols with 10 to 20 moles of ethylene oxide per mole of phenolic hydroxyl group;
- 2.4 Reaction products of saturated and / or unsaturated fatty acid amides with 8 to 20 carbon atoms with 5 to 20 moles of ethylene oxide per mole of acid amide, preferably oleic acid amides with 8 to 15 moles of ethylene oxide per mole of acid amide.
- 2.5 reaction products of saturated and / or unsaturated fatty amines with 8 to 20 carbon atoms with 5 to 20 moles of ethylene oxide per mole of amine, preferably oleylamines with 8 to 15 moles of ethylene oxide per mole of amine;
- 2.6 ethylene oxide-propylene oxide block polymers with 10-80% ethylene oxide and molecular weights of 1000-80000;
- 2.7 Ethylene oxide-propylene oxide adducts with ethylenediamine.
- 3. Copolymers of synthetic monomers, in particular of monomers with carboxyl groups, for example copolymers of 2-vinylpyrrolidone with 3-vinylpropionic acid or maleic acid copolymers and their salts.
Die Verdickungsmittel stabilisieren die Dispersionen, man kann sie daher auch als Stabilisatoren bezeichnen. Beispiele für verwendbare Verdickungsmittel sind vor allem modifizierte Polysaccharide vom Xanthan-, Alginat-, Guar- oder Cellulose-Typ. Dazu gehören, z.B. Celluloseether, wie Methylcellulose oder Carboxylmethylcellulose, oder Heteropolysaccharide, die in den Seitenketten z.B. Mannose- oder Glucuronsäure-Gruppen tragen. Solche Verdickungsmittel sind im Handel erhältlich.The thickeners stabilize the dispersions, so they can also be called stabilizers. Examples of usable thickeners are, above all, modified polysaccharides of the xanthan, alginate, guar or cellulose type. These include, for example, cellulose ethers, such as methyl cellulose or carboxylmethyl cellulose, or heteropolysaccharides which carry, for example, mannose or glucuronic acid groups in the side chains. Such thickeners are commercially available.
Außer dem Dispergiermittel und dem Verdickungsmittel können die erfindungsgemäßen Dispersionen noch weitere Hilfsmittel enthalten, beispielsweise hydrotrope Mittel, wie z.B. Harnstoff oder Natrium-xylolsulfonat; Gefrierschutzmittel, wie z.B. Ethylen- oder Propylenglykol, Diethylenglykol, Glycerin oder Sorbit; Feuchthaltemittel, wie z.B. Polyethylenglykole oder Glycerin; Biocide, wie z.B. Chloracetamid, Formalin oder 1,2-Benzisothiazolin-3-one; oder Komplexbildner, wie z.B. Trinatrium-nitrilotriacetat.In addition to the dispersant and the thickener, the dispersions according to the invention may also contain other auxiliaries, for example hydrotropic agents, such as e.g. Urea or sodium xylene sulfonate; Antifreezing agents, e.g. Ethylene or propylene glycol, diethylene glycol, glycerin or sorbitol; Humectants, e.g. Polyethylene glycols or glycerin; Biocides such as Chloroacetamide, formalin or 1,2-benzisothiazolin-3-one; or complexing agents, e.g. Trisodium nitrilotriacetate.
Von besonderer Bedeutung ist der Zusatz von Biociden, insbesondere von Fungiciden, die ein Pilzwachstum in der wäßrigen Dispersion verhindern sollen. Das Biocid wird vorzugsweise in einer Menge von 0,05 bis 0,5 Gew.-% der Dispersion verwendet.Of particular importance is the addition of biocides, especially fungicides, which are intended to prevent fungal growth in the aqueous dispersion. The biocid is preferably used in an amount of 0.05 to 0.5% by weight of the dispersion.
Zur Herstellung dieser Dispersionen geht man zweckmäßig vom feuchten Filterkuchen aus, setzt diesem das Dispergiermittel und das Verdickungmittel sowie gegebenenfalls die gewünschte Menge Wasser und gegebenenfalls sonstige Zusätze zu und rührt das Gemisch so lange bis eine fließfahige homogene Dispersion entstanden ist.To prepare these dispersions, it is advisable to start with a moist filter cake, add the dispersant and the thickener and, if appropriate, the desired amount of water and any other additives, and stir the mixture until a flowable, homogeneous dispersion has formed.
Hat der Filterkuchen bereits den gewünschten Gehalt an Wasser, so braucht man natürlich kein Wasser zusetzen. Man kann beim Filtrieren die Polycarbonsäure so stark abpressen, daß nur 40 % oder weniger Wasser im Filterkuchen verbleiben. Beim Rühren des Filterkuchens gibt man dann langsam so viel Wasser zu, daß eine fließfähige Dispersion entsteht. Hat man einmal die optimale Menge ermittelt, so kann man den Druck beim Filtrieren so wählen, daß der Filterkuchen bereits den gewünschten Wassergehalt hat.If the filter cake already has the desired water content, it is of course not necessary to add water. When filtering, the polycarboxylic acid can be pressed so strongly that only 40% or less water remains in the filter cake. When the filter cake is stirred, enough water is then slowly added to produce a flowable dispersion. Once you have determined the optimal amount, you can choose the pressure when filtering so that the filter cake already has the desired water content.
Das Rühren kann in üblichen Rührgeräten geschehen, vor allem in solchen Rührgeräten, bei denen auf das Rührgut ein stärkerer Druck ausgeübt wird. Brauchbar sind z.B. Rührwerke mit einer Rührspindel, Zahnmühlen, Kolloidmühlen oder Schneckehrührwerke.The stirring can be done in conventional stirrers, especially in stirrers in which a greater pressure is exerted on the material to be stirred. The following are usable e.g. Agitators with a stirring spindle, tooth mills, colloid mills or screw agitators.
Je nach dem verwendeten Rührwerk benötigt man zur Erzielung einer fließfähigen Dispersion etwa eine halbe bis zu einer Stunde. Das Rühren wird vorzugsweise bei Raumtemperatur durchgeführt, es kann aber in bestimmten Fällen von Vorteil sein, das Rührgut leicht zu kühlen.Depending on the agitator used, it takes about half an hour to an hour to achieve a flowable dispersion. The stirring is preferably carried out at room temperature, but it can be advantageous in certain cases to cool the material to be stirred gently.
Die so hergestellten Dispersionen sind bei Raumtemperatur sowie bei Temperaturen bis zu 40°C mehrere Monate stabil. Sie behalten ihre Fließfähigkeit und entmischen sich nicht. Das ist für die Lagerung und den Transport der Dispersionen eine wichtige Eigenschaft.The dispersions thus produced are stable for several months at room temperature and at temperatures up to 40 ° C. They keep their fluidity and do not separate. This is important for the storage and transportation of the dispersions Property.
Für die Verwendung der Dispersionen in wässrigen Medien ist es von Vorteil, daß die Dispersionen als Flüssigkeit gehandhabt werden können und z.B. bei der Dosierung gepumpt werden können. Ein weiterer Vorteil ist, daß sich die Dispersionen sehr schnell in alkalisch-wäßrigen Systemen lösen. Bestehen die Dispersionen aus den Salzen der Polycarbonsäuren, so lösen diese sich auch in neutralen wäßrigen Systemen. Das Lösen kann durch Rühren beschleunigt werden.For the use of the dispersions in aqueous media it is advantageous that the dispersions can be handled as a liquid and e.g. can be pumped during dosing. Another advantage is that the dispersions dissolve very quickly in alkaline aqueous systems. If the dispersions consist of the salts of the polycarboxylic acids, they also dissolve in neutral aqueous systems. The dissolution can be accelerated by stirring.
Beispiele für wäßrige Systeme, in denen die erfindungsgemäßen Dispersionen eingesetzt werden können, sind Kühlwassersysteme, Klimaanlagen, Dampferzeugungsanlagen, Seewasserentsalzungsanlagen, Heizungs- und Kühlwasserkreisläufe, wäßrige Hydraulikflüssigkeiten, vor allem aber wäßrige Metallbearbeitungsflüssigkeiten.Examples of aqueous systems in which the dispersions according to the invention can be used are cooling water systems, air conditioning systems, steam generating systems, seawater desalination systems, heating and cooling water circuits, aqueous hydraulic fluids, but above all aqueous metalworking fluids.
Die folgenden Beispiele illustrieren die Erfindung näher, ohne sie auf diese Beispiele beschränken zu wollen. Darin bedeuten Teile Gewichtsteile und Prozente Gewichtsprozente.
Beispiel 1: 99,2 Teile eines 50 % Wasser enthaltenden Filterkuchens von 2,4,6-Tris-(5-carboxypentylamino)-1,3,5-triazin (Reocor® 190, Ciba-Geigy AG) werden in einem Turbinenrührwerk der Fa-Polytron bei einer Rührgeschwindigkeit von 1000 U/min bis zur Fließfähigkeit gerührt. Dies dauert etwa 15 Minuten. Dann werden 0,5 Teile eines Dispergiermittels auf Basis einer 40 %igen wäßrigen Lösung von dinaphthylmethandisulfosaurem Natrium (Dispergator CC, Ciba-Geigy AG) zugegeben und nach weiteren 15 Minuten Rühren werden 0,1 Teile eines Polysaccharides von Xanthan-Typus (Rhodopol® 23, Rhone-Poulenc) als Verdicker und 0,2 Teile einer 35 %igen wäßrigen Dispersion von 1,2-Benzisothiazolin-3-on (Proxel® BD, JCJ Ltd.) als Biocid zugegeben und nochmals 15 Minuten gerührt. Die entstandene Dispersion enthält ca. 50 % Wasser und hat eine Viskosität von 170 mPa.s⁻¹ bei 20°C. (gemessen mit einem Rotationsviskosimeter mit Meß-System DIN 25). Zur Prüfung der Stabilität wird die Dispersion bei Raumtemperatur und bei 40°C gelagert. Nach 6 Wochen ist keine Phasentrennung eingetreten.
Beispiel 2: Es wird wie in Beispiel 1 gearbeitet. 90.6 Teilen eines Reocor® 190-Filterkuchens mit 50 % Wassergehalt werden mit 1 Teil eines anionischen Tensides auf Basis eines Formaldehyd-Kondensationsproduktes einer aromatischen Sulfosäure als 10 %ige wässrige Lösung (Dispergator H, Ciba-Geigy AG), 0,2 Teilen Rhodopol® 23 und 0,2 Teilen Proxel® BD verrührt. Die resultierende Dispersion hat eine Viskosität von 250 mPa.s⁻¹ und zeigt keine Veränderung bei 4 Monaten Lagerung bei 20°C.
Beispiel 3: Es wird wie in Beispiel 1 gearbeitet unter Mischen der folgenden Komponenten:
99,1 Teile Reocor® 190-Filterkuchen mit 50 % Wassergehalt
0,5 Teile eines Ethylenoxid-Propylenoxyd-Blockcopolymer (Pluronic® F 108, BASF-Wyandotte Corp.) als Dispergator
0.2 Teile Rhodopol® 23 als Verdicker
0,2 Teile Proxel® BD als Biocid
Die resultierende Dispersion hat eine Viskosität von 250 mPa/s.
Beispiele 4-8: Es wird wie in Beispiel 1 gearbeitet unter Variation des Dispergators und der mengenmäßigen Zusammensetzung.
Beispiel 9: 5 kg eines 54 % Wasser enthaltenden Filterkuchens von Benzthiazol-2-ylthiobernsteinsäure (Reocor® 152, Ciba-Geigy AG) werden wie in Versuch 1 beschrieben mit 25 g Dispergator CC und 5 g Rhodopol® 23 dispergiert. Die resultierende Dispersion hat eine Viskosität von 60 mPa.⁻¹ bei 25°C (gemessen mit einem Viscotester VT 500 bei einer Drehzahl von 8). Bei Raumtemperatur zeigt diese Dispersion bei 6 Wochen Lagerung keine Veränderung.
Beispiel 10: In einem 1,5 l Glasgefäß mit Schneckenrührwerk aus Edelstahl werden 3 g eines Ligninsulfonates (Reax® 85-A) in 44g Wasser gelöst. Dazu gibt man bei einer Rührgeschwindigkeit von ca. 50-70 U/pm innerhalb von 15 Minuten 900 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190. Dabei entsteht eine flüssige Dispersion, welche während ca. 30 min bei 50-70 UpM homogenisiert wird. Dazu gibt man die Lösung von 1 g Rhodopol® 23 in50 g Wasser. Anschließend wird die Dispersion 1 h bei 75 U/pm gerührt. Die so bereitete Dispersion hat eine Viskosität von 200 mPa.s⁻¹ (bei 25°C). Die Dispersion hat einen Gehalt von 45 % des Korrosionsinhibitors; 54,5 % Wasser, O,3 % Dispergiermittel, 0,1 % Verdicker.
Beispiel 11: Zu einer Lösung von 10 g Dispergator CC und 2 g Polyethylenoxid (MG 10⁶) in 135 g Wasser werden unter Rühren bei 50-60 U/pm innerhalb 15 Minuten 800 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190 zugegeben. Dazu gibt man die Lösung von 1 g Rhodopol® 23 in 50 g Wasser und 2 g Proxel® BD. Anschließend wird die Dispersion 1 h bei 75 U/pm homogenisiert. Es entsteht eine fließfahige Dispersion mit einem Gehalt von 40 % des Korrosionsinhibitors, 59 % Wasser, 0,4 % Dispergiermittel, 0,1 % Verdicker, 0,2 % Biocid und 0,2 % Gleitmittel (Polyethylenoxid).
Beispiel 12: In einem Glasgefäß 600 ml mit Schneckenrührwerk aus Edelstahl werden 1.2 g eines Ligninsulfonates (Reax® 85-A) in 91 g Wasser gelöst. Dazu gibt man bei einer Rührgeschwindigkeit von ca. 50-70 U/pm innerhalb von 15 Minuten 256 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190. Dabei entsteht eine flüssige Dispersion, der innerhalb von 15 Min 32 g Anthranilsäure zugegeben werden. Anschließend wird 30 Minuten bei 50-70 UpM homogenisiert. Dazu gibt man die Lösung von 0.4 g Rhodopol® 23 in 19.6 g Wasser. Anschließend wird die Dispersion 1 h bei 75 U/pm gerührt. Die so bereitete Dispersion hat eine Viskosität von 200 mPa.s⁻¹ (bei 25°C). Die Dispersion hat einen Gehalt von 40 % des Korrosionsinhibitors (Verhältnis 80 Teile Reocor 190 und 20 Teile Anthranilsäure); 59.6 % Wasser, O,3 % Dispergiermittel, 0,1 % Verdicker.
Beispiel 13: In einem Glasgefäß (600 ml) mit Schneckenrührwerk aus Edelstahl werden 1.2 g eines Ligninsulfonates (Reax® 85-A) in 123 g Wasser gelöst. Dazu gibt man bei einer Rührgeschwindigkeit von ca. 50-70 U/pm innerhalb von 15 Minuten 192 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190. Dabei entsteht eine flüssige Dispersion, der innerhalb von 15 Min 64 g Anthranilsäure (Gehalt 99%) zugegeben werden. Anschließend wird 30 Minuten bei 50-70 UpM homogenisiert. Dazu gibt man die Lösung von 0.4 g Rhodopol® 23 in 19.6 g Wasser. Anschließend wird die Dispersion 1 h bei 75 U/pm gerührt. Die so bereitete Dispersion hat eine Viskosität von 200 mPa.s⁻¹ (bei 25°C). Die Dispersion hat einen Gehalt von 40 % des Korrosionsinhibitors (Verhältnis 60 Teile Reocor 190 und 40 Teile Anthranilsäure); 59.6 % Wasser, O,3 % Dispergiermittel, 0,1 % Verdicker.
Beispiel 14: In einem Glasgefäß (600 ml) mit Schneckenrührwerk aus Edelstahl werden 1.2 g eines Ligninsulfonates (Reax® 85-A) in 19 g Wasser gelöst. Dazu gibt man bei einer Rührgeschwindigkeit von ca. 50-70 U/pm innerhalb von 15 Minuten 360 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190 (Mononatriumsalz*). Dabei entsteht eine flüssige Dispersion, die noch 30 Minuten bei 50-70 UpM homogenisiert wird. Dazu gibt man die Lösung von 0.4 g Rhodopol® 23 in 19.6 g Wasser. Anschließend wird die Dispersion 1 h bei 75 U/pm gerührt. Die so bereitete Dispersion hat eine Viskosität von 200 mPa.s⁻¹ (bei 25°C). Die Dispersion hat einen Gehalt von 45 % des Korrosionsinhibitors , 54.6 % Wasser, O,3 % Dispergiermittel, 0,1 % Verdicker.
Beispiel 15: In einem Glasgefäß (600 ml) mit Schneckenrührwerk aus Edelstahl werden 1.2 g eines Ligninsulfonates (Reax® 85-A) in 19 g Wasser gelöst. Dazu gibt man bei einer Rührgeschwindigkeit von ca. 50-70 U/pm innerhalb von 15 Minuten 360 g eines ca. 50 % Wasser enthaltenden Filterkuchens von Reocor® 190 (Monodiethanolaminsalz#). Dabei entsteht eine flüssige Dispersion, die noch 30 Minuten bei 50-70 UpM homogenisiert wird. Dazu gibt man die Lösung von 0.4 g Rhodopol® 23 in 19.6 g Wasser. Anschließend wird die Dispersion 1 h bei 75 U/pm gerührt Die Dispersion hat einen Gehalt von 45 % des Korrosionsinhibitors , 54.6 % Wasser, O,3 % Dispergiermittel, 0,1 % Verdicker.
*) Zu Reocor 190 Filterkuchen wird in wäßriger Suspension eine Lösung von Dinatriumhydrogenphosphat zugesetzt; das gebildete Mononatriumsalz wird isoliert und kann mit Reax als Dispergator verflüssigt werden.
#) Zu Reocor 190 Filterkuchen wird in wäßriger Suspension die stöchiometrische Menge Diethanolamin gegeben; das gebildete Mono-Diethanolaminsalz wird isoliert und kann mit Reax als Dispergator verflüssigt werden.The following examples illustrate the invention in more detail without wishing to restrict it to these examples. Parts in parts by weight and percentages mean percentages by weight.
Example 1 : 99.2 parts of a 50% water-containing filter cake of 2,4,6-tris (5-carboxypentylamino) -1,3,5-triazine (Reocor® 190, Ciba-Geigy AG) are in a turbine agitator Fa-Polytron stirred at a stirring speed of 1000 rpm to flowability. This takes about 15 minutes. Then 0.5 part of a dispersant based on a 40% aqueous solution of dinaphthylmethane disulphosaem sodium (Dispersant CC, Ciba-Geigy AG) is added and after stirring for a further 15 minutes, 0.1 part of a polysaccharide of the xanthan type (Rhodopol® 23 , Rhone-Poulenc) as a thickener and 0.2 part of a 35% aqueous dispersion of 1,2-benzisothiazolin-3-one (Proxel® BD, JCJ Ltd.) as a biocide and stirred for another 15 minutes. The resulting dispersion contains about 50% water and has a viscosity of 170 mPa.s⁻¹ at 20 ° C. (measured with a rotary viscometer with measuring system DIN 25). To check the stability, the dispersion is stored at room temperature and at 40 ° C. No phase separation occurred after 6 weeks.
Example 2 : The procedure is as in Example 1. 90.6 parts of a Reocor® 190 filter cake with 50% water content are mixed with 1 part of an anionic surfactant based on a formaldehyde condensation product of an aromatic sulfonic acid 10% aqueous solution (Dispersant H, Ciba-Geigy AG), 0.2 parts Rhodopol® 23 and 0.2 parts Proxel® BD. The resulting dispersion has a viscosity of 250 mPa.s⁻¹ and shows no change after 4 months storage at 20 ° C.
Example 3 : The procedure is as in Example 1, mixing the following components:
99.1 parts of Reocor® 190 filter cake with 50% water content
0.5 part of an ethylene oxide-propylene oxide block copolymer (Pluronic® F 108, BASF-Wyandotte Corp.) as a dispersant
0.2 parts Rhodopol® 23 as a thickener
0.2 parts of Proxel® BD as a biocid
The resulting dispersion has a viscosity of 250 mPa / s.
Examples 4-8 : The procedure is as in Example 1, with variation of the dispersant and the quantitative composition.
Example 9 : 5 kg of a 54% water-containing filter cake of benzothiazol-2-ylthiosuccinic acid (Reocor® 152, Ciba-Geigy AG) are dispersed as described in experiment 1 with 25 g of dispersant CC and 5 g of Rhodopol® 23. The resulting dispersion has a viscosity of 60 mPa.⁻¹ at 25 ° C (measured with a Viscotester VT 500 at a speed of 8). At room temperature, this dispersion shows storage for 6 weeks no change.
Example 10 : In a 1.5 l glass vessel with a stainless steel screw agitator, 3 g of a lignin sulfonate (Reax® 85-A) are dissolved in 44 g of water. At a stirring speed of approx. 50-70 U / pm, 900 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes. This results in a liquid dispersion, which for approx. 30 min at 50-70 Rpm is homogenized. The solution of 1 g Rhodopol® 23 in 50 g water is added. The dispersion is then stirred at 75 rpm for 1 h. The dispersion prepared in this way has a viscosity of 200 mPa.s⁻¹ (at 25 ° C). The dispersion contains 45% of the corrosion inhibitor; 54.5% water, O, 3% dispersant, 0.1% thickener.
Example 11 : 800 g of a filter cake of approx. 50% water containing Reocor® 190 are added to a solution of 10 g of dispersant CC and 2 g of polyethylene oxide (MW 10⁶) in 135 g of water with stirring at 50-60 rpm within 15 minutes admitted. To do this, add the solution of 1 g Rhodopol® 23 in 50 g water and 2 g Proxel® BD. The dispersion is then homogenized at 75 U / pm for 1 h. A flowable dispersion is formed with a content of 40% of the corrosion inhibitor, 59% water, 0.4% dispersant, 0.1% thickener, 0.2% biocide and 0.2% lubricant (polyethylene oxide).
Example 12: In a 600 ml glass vessel with a stainless steel screw agitator, 1.2 g of a lignin sulfonate (Reax® 85-A) is dissolved in 91 g of water. At a stirring speed of approx. 50-70 rpm, 256 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes. This results in a liquid dispersion to which 32 g of anthranilic acid are added within 15 minutes . The mixture is then homogenized at 50-70 rpm for 30 minutes. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred at 75 rpm for 1 h. The dispersion prepared in this way has a viscosity of 200 mPa.s⁻¹ (at 25 ° C). The dispersion contains 40% of the corrosion inhibitor (ratio 80 parts Reocor 190 and 20 parts anthranilic acid); 59.6% water, O, 3% dispersant, 0.1% thickener.
Example 13 : In a glass vessel (600 ml) with a stainless steel screw agitator, 1.2 g of a lignin sulfonate (Reax® 85-A) is dissolved in 123 g of water. At a stirring speed of approx. 50-70 U / pm, 192 g of a filter cake of Reocor® 190 containing approx. 50% water are added within 15 minutes liquid dispersion to which 64 g of anthranilic acid (99% content) are added within 15 minutes. The mixture is then homogenized at 50-70 rpm for 30 minutes. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred at 75 rpm for 1 h. The dispersion prepared in this way has a viscosity of 200 mPa.s⁻¹ (at 25 ° C). The dispersion contains 40% of the corrosion inhibitor (ratio 60 parts Reocor 190 and 40 parts anthranilic acid); 59.6% water, O, 3% dispersant, 0.1% thickener.
Example 14 : 1.2 g of a lignin sulfonate (Reax® 85-A) are dissolved in 19 g of water in a glass vessel (600 ml) with a stainless steel screw agitator. At a stirring speed of approx. 50-70 U / pm, 360 g of a filter cake of approx. 50% water containing Reocor® 190 (monosodium salt *) are added within 15 minutes. This creates a liquid dispersion that is homogenized for 30 minutes at 50-70 rpm. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred at 75 rpm for 1 h. The dispersion prepared in this way has a viscosity of 200 mPa.s⁻¹ (at 25 ° C). The dispersion has a content of 45% of the corrosion inhibitor, 54.6% water, O, 3% dispersant, 0.1% thickener.
Example 15 : 1.2 g of a lignin sulfonate (Reax® 85-A) are dissolved in 19 g of water in a glass vessel (600 ml) with a stainless steel screw agitator. 360 g of a filter cake of Reocor® 190 (monodiethanolamine salt # ) containing approx. 50% water are added within 15 minutes at a stirring speed of approx. 50-70 U / pm. This creates a liquid dispersion that is homogenized for 30 minutes at 50-70 rpm. Add the solution of 0.4 g Rhodopol® 23 in 19.6 g water. The dispersion is then stirred for 1 hour at 75 rpm. The dispersion has a content of 45% of the corrosion inhibitor, 54.6% water, O, 3% dispersant, 0.1% thickener.
*) A solution of disodium hydrogen phosphate is added to Reocor 190 filter cake in aqueous suspension; the monosodium salt formed is isolated and can be liquefied using Reax as the dispersant.
#) The stoichiometric amount of diethanolamine is added to Reocor 190 filter cake in aqueous suspension; the mono-diethanolamine salt formed is isolated and can be liquefied using Reax as a dispersant.
Claims (12)
- A flowable aqueous dispersion of a solid polycarboxylic acid corrosion inhibitor comprising 25-57 % by weight of corrosion inhibitor of formula I or II
R₁ and R₂ are each independently of the other H, C₁-C₄alkyl or a group -Z-COOH,
R₃ is C₁-C₁₂alkyl, phenyl or a group -N(R₄)(R₅), -OR₆ or -SR₆,
R₄ and R₅ are each independently of the other H, C₁-C₁₂alkyl, C₂-C₄hydroxyalkyl, cyclohexyl, phenyl or a group -Z-COOH, or R₄ and R₅ together are C₄-C₆alkylene or 3-oxapentylene, R₆ is hydrogen, C₁-C₁₂alkyl or phenyl,
m is zero or 1, X is sulfur, oxygen or NH,
R₇ is hydrogen, C₁-C₄alkyl, halogen, C₁-C₄alkoxy, carboxyl, amino or nitro, R₈, R₉, R₁₀ and R₁₁ are each independently of one another hydrogen, C₁-C₁₂alkyl, C₁-C₄hydroxyalkyl, C₂-C₆carboxyalkyl, C₂-C₁₀alkoxyalkyl, carboxyl, phenyl or benzyl, or R₈ and R₉ together are a direct bond, with at least 2 of the groups R₈, R₉, R₁₀ and R₁₁ being a carboxyl or carboxyalkyl group, or of an alkali metal salt, ammonium salt or amine salt of such a polycarboxylic acid, 40-72 % by weight of water, 0.1 to 2 % by weight of a dispersant and 0.01 to 0.5 % by weight of a thickener. - A dispersion according to claim 1, wherein
Z is C₁-C₈alkylene, R₁ and R₂ are hydrogen or C₁-C₄alkyl,
R₃ is a group -N(R₄)(R₅), R₄ is hydrogen, cyclohexyl or C₁-C₁₂alkyl,
R₅ is C₁-C₁₂alkyl, phenyl or a group -Z-COOH, or R₄ and R₅ together are 1,5-pentylene or 3-oxa-1,5-pentylene,
m is zero or 1, X is sulfur, R₇ is hydrogen, methyl or chloro, R₈ and R₁₀ are hydrogen, and
R₉ and R₁₁ are carboxyl or C₂-C₄carboxyalkyl. - A dispersion according to claim 1, wherein Z is pentamethylene, R₁ and R₂ are hydrogen, R₃ is a group -NH-(CH₂)₅-COOH, X is sulfur, R₇ is hydrogen, m is zero or 1, R₈ and R₁₀ are hydrogen, R₉ is carboxyl and R₁₁ is carboxymethyl.
- A dispersion according to claim 1, wherein the polycarboxylic acid corrosion inhibitor is 2,4,6-tris(5-carboxypentylamino)-1,3,5-triazine or benzothiazol-2-ylthiosuccinic acid.
- A dispersion according to claim 1 comprising 40-53 % of a compound of formula I or II, 45-58 % of water, 0.1 to 2 % of a dispersant and 0.01 to 0.5 % of a thickener.
- A dispersion according to claim 1, wherein the dispersant is an anionic or nonionic surfactant.
- A dispersion according to claim 6, wherein the thickener is a modified polysaccharide.
- A dispersion according to claim 1, which additionally comprises 0.05 to 0.5 % by weight of a biocide, in particular a fungicide.
- A dispersion according to claim 1, which comprises as additional corrosion inhibitor 10-50 % by weight, based on the total weight of corrosion inhibitors, of anthranilic acid.
- A dispersion according to claim 1, which comprises as additional corrosion inhibitor 20-40 % by weight, based on the total weight of corrosion inhibitors, of anthranilic acid.
- A process for the preparation of a flowable agueous dispersion of a polycarboxylic acid corrosion inhibitor of the formula I or II according to claim 1, comprising 25-57 % by weight of the corrosion inhibitor, 40-72 % by weight of water, 0.1-2 % by weight of a dispersant and 0.01 to 0.5 % by weight of a thickener, which comprises mixing the moist corrosion inhibitor, obtained by filtration, with the dispersant and the thickener and, if desired, with the necessary amount of water, and stirring the mixture until it is flowable.
- A process according to claim 11, wherein stirring is carried out at room temperature.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1228/91 | 1991-04-24 | ||
CH122891 | 1991-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0511163A1 EP0511163A1 (en) | 1992-10-28 |
EP0511163B1 true EP0511163B1 (en) | 1995-07-26 |
Family
ID=4205493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92810280A Expired - Lifetime EP0511163B1 (en) | 1991-04-24 | 1992-04-15 | Pourable aqueous dispersions of polycarboxylic acid corrosion inhibitors |
Country Status (8)
Country | Link |
---|---|
US (1) | US5549847A (en) |
EP (1) | EP0511163B1 (en) |
JP (1) | JP3259185B2 (en) |
BR (1) | BR9201495A (en) |
CA (1) | CA2066806C (en) |
DE (1) | DE59203008D1 (en) |
ES (1) | ES2075671T3 (en) |
MX (1) | MX9201868A (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9201165D0 (en) * | 1992-01-18 | 1992-03-11 | Ciba Geigy | Corrosion inhibiting compositions |
US5665688A (en) * | 1996-01-23 | 1997-09-09 | Olin Microelectronics Chemicals, Inc. | Photoresist stripping composition |
US6110381A (en) * | 1996-04-19 | 2000-08-29 | Betzdearborn Inc. | Method and composition for inhibiting microbial adhesion on surfaces |
US6241898B1 (en) | 1996-04-19 | 2001-06-05 | Betzdearborn Inc. | Method for inhibiting microbial adhesion on surfaces |
US5780406A (en) * | 1996-09-06 | 1998-07-14 | Honda; Kenji | Non-corrosive cleaning composition for removing plasma etching residues |
DE19648843C2 (en) * | 1996-11-26 | 1998-09-17 | Zts Chemie Gmbh | Melamine polycarboxamides and their use as anti-corrosion agents |
ATE230400T1 (en) * | 1998-03-27 | 2003-01-15 | Stefan Graichen | MELAMINE-AZOMETHINE DERIVATIVES AND AN ANTI-CORROSIVE AGENT CONTAINING SAME |
US6803392B1 (en) | 1999-10-20 | 2004-10-12 | Ciba Specialty Chemicals Corporation | Photoinitiator formulations |
US6413923B2 (en) | 1999-11-15 | 2002-07-02 | Arch Specialty Chemicals, Inc. | Non-corrosive cleaning composition for removing plasma etching residues |
JP2005325300A (en) * | 2004-05-17 | 2005-11-24 | Toyota Motor Corp | Cooling liquid composition |
JP2007016167A (en) * | 2005-07-08 | 2007-01-25 | Taiyu Kk | Water soluble metal-working oil agent |
WO2014005861A1 (en) * | 2012-07-03 | 2014-01-09 | Basf Se | 1,3,5-triazine derivatives as corrosion inhibitors for metallic surfaces |
JP6389883B2 (en) * | 2013-10-23 | 2018-09-12 | オートノミック マテリアルズ、インコーポレイテッド | Self-healing agent formulations containing liquid corrosion inhibitors |
CN104649987A (en) * | 2013-11-25 | 2015-05-27 | 刘现梅 | Triazine trithione butyrate hydroxyalkyl tertiary ammonium salt and preparation method thereof |
CN104649990B (en) * | 2013-11-26 | 2018-01-16 | 烟台恒鑫化工科技有限公司 | A kind of triazine triamido glutaric acid alcohol amine salt and preparation method thereof |
CN110550750A (en) * | 2019-09-10 | 2019-12-10 | 神美科技有限公司 | Traceable phosphorus-free corrosion and scale inhibitor special for oxygen plant |
Citations (1)
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GB1485235A (en) * | 1974-12-05 | 1977-09-08 | Kraftwerk Union Ag | Arrangement for electrically connecting an ac exciter to rectifiers arranged on a shaft for coupling the exciter to an electrical machine |
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US2767144A (en) * | 1953-12-28 | 1956-10-16 | Gulf Oil Corp | Partial fatty acid esters of alkitol anhydrides and a dimeric acid, as corrosion inhibitors |
NL99849C (en) * | 1954-06-21 | |||
US2929696A (en) * | 1957-09-06 | 1960-03-22 | California Research Corp | Rust inhibited fuels |
US3334048A (en) * | 1963-01-17 | 1967-08-01 | Castrol Ltd | Hydraulic fluids |
US3578589A (en) * | 1969-03-17 | 1971-05-11 | Grace W R & Co | Method for treating cooling water |
JPS496022B1 (en) * | 1969-08-11 | 1974-02-12 | ||
US3697520A (en) * | 1970-04-30 | 1972-10-10 | Ciba Geigy Ag | Triazine carboxylic acids and esters |
US4108790A (en) * | 1971-11-02 | 1978-08-22 | Exxon Research & Engineering Co. | Corrosion inhibitor |
DE2236594B1 (en) * | 1972-07-26 | 1973-08-23 | PROCESS FOR DISPERSING UNDISOLVED, FINELY DISTRIBUTABLE SUBSTANCES | |
DE2653933A1 (en) * | 1976-11-27 | 1978-06-01 | Henkel Kgaa | USE OF CYCLOHEXANEHEXACARBONIC ACID AS A CORROSION INHIBITOR FOR DOMESTIC WATER SYSTEMS |
US4132850A (en) * | 1977-06-29 | 1979-01-02 | American Cyanamid Company | Tri-substituted triazines |
US4402907A (en) * | 1980-08-13 | 1983-09-06 | Ciba-Geigy Corporation | Triazine carboxylic acids as corrosion inhibitors for aqueous systems |
DE3142059A1 (en) * | 1981-10-23 | 1983-05-05 | Hoechst Ag | Deicing and anti-icing composition |
US4409113A (en) * | 1981-11-02 | 1983-10-11 | Pennwalt Corporation | Synthetic hot forging lubricants and process |
FR2538406B1 (en) * | 1982-12-27 | 1985-09-20 | Bp Chimie Sa | PROCESS FOR TREATING AQUEOUS FLUIDS TO REDUCE CORROSION OF METALS ON CONTACT |
GB8313322D0 (en) * | 1983-05-14 | 1983-06-22 | Ciba Geigy Ag | Heterocyclic-(cyclo)aliphatic carboxylic acids |
GB8330517D0 (en) * | 1983-11-16 | 1983-12-21 | Scras | 6-vinyl-furo-(3,4-c)pyridine derivatives |
DE3660350D1 (en) * | 1985-05-07 | 1988-08-04 | Akzo Nv | Pourable detergent and bleach compositions |
-
1992
- 1992-04-15 ES ES92810280T patent/ES2075671T3/en not_active Expired - Lifetime
- 1992-04-15 EP EP92810280A patent/EP0511163B1/en not_active Expired - Lifetime
- 1992-04-15 DE DE59203008T patent/DE59203008D1/en not_active Expired - Fee Related
- 1992-04-22 CA CA002066806A patent/CA2066806C/en not_active Expired - Fee Related
- 1992-04-23 BR BR929201495A patent/BR9201495A/en not_active IP Right Cessation
- 1992-04-23 MX MX9201868A patent/MX9201868A/en unknown
- 1992-04-24 JP JP13189692A patent/JP3259185B2/en not_active Expired - Fee Related
-
1994
- 1994-11-23 US US08/345,013 patent/US5549847A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1485235A (en) * | 1974-12-05 | 1977-09-08 | Kraftwerk Union Ag | Arrangement for electrically connecting an ac exciter to rectifiers arranged on a shaft for coupling the exciter to an electrical machine |
Also Published As
Publication number | Publication date |
---|---|
CA2066806C (en) | 2002-03-12 |
JP3259185B2 (en) | 2002-02-25 |
EP0511163A1 (en) | 1992-10-28 |
ES2075671T3 (en) | 1995-10-01 |
BR9201495A (en) | 1992-11-24 |
US5549847A (en) | 1996-08-27 |
DE59203008D1 (en) | 1995-08-31 |
CA2066806A1 (en) | 1992-10-25 |
MX9201868A (en) | 1992-10-01 |
JPH05179243A (en) | 1993-07-20 |
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