NO161384B - Inhibitor mot korrosjon ved co2 og h2s i vann-i-olje-emulsjoner. - Google Patents
Inhibitor mot korrosjon ved co2 og h2s i vann-i-olje-emulsjoner. Download PDFInfo
- Publication number
- NO161384B NO161384B NO833148A NO833148A NO161384B NO 161384 B NO161384 B NO 161384B NO 833148 A NO833148 A NO 833148A NO 833148 A NO833148 A NO 833148A NO 161384 B NO161384 B NO 161384B
- Authority
- NO
- Norway
- Prior art keywords
- water
- formula
- inhibitor
- oil emulsions
- corrosion
- Prior art date
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- 239000003112 inhibitor Substances 0.000 title claims description 24
- 238000005260 corrosion Methods 0.000 title claims description 17
- 230000007797 corrosion Effects 0.000 title claims description 17
- 239000000839 emulsion Substances 0.000 title description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000002243 precursor Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000007762 w/o emulsion Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims 1
- FSQQTNAZHBEJLS-UPHRSURJSA-N maleamic acid Chemical class NC(=O)\C=C/C(O)=O FSQQTNAZHBEJLS-UPHRSURJSA-N 0.000 claims 1
- 239000003921 oil Substances 0.000 description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
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- 239000002253 acid Substances 0.000 description 5
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- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 4
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- 229910052717 sulfur Inorganic materials 0.000 description 3
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- 150000005326 tetrahydropyrimidines Chemical class 0.000 description 3
- OTPDWCMLUKMQNO-UHFFFAOYSA-N 1,2,3,4-tetrahydropyrimidine Chemical compound C1NCC=CN1 OTPDWCMLUKMQNO-UHFFFAOYSA-N 0.000 description 2
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- 239000005864 Sulphur Substances 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 229940058307 antinematodal tetrahydropyrimidine derivative Drugs 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
- ZQPPMHVWECSIRJ-MDZDMXLPSA-N elaidic acid Chemical compound CCCCCCCC\C=C\CCCCCCCC(O)=O ZQPPMHVWECSIRJ-MDZDMXLPSA-N 0.000 description 2
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- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- NGKIIKNJVVBNNE-UHFFFAOYSA-N 11-methyldodecan-1-amine Chemical compound CC(C)CCCCCCCCCCN NGKIIKNJVVBNNE-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
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- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
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- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
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- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
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- GKQPCPXONLDCMU-CCEZHUSRSA-N lacidipine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C1=CC=CC=C1\C=C\C(=O)OC(C)(C)C GKQPCPXONLDCMU-CCEZHUSRSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl 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])[H] 0.000 description 1
- 125000002958 pentadecyl 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])[H] 0.000 description 1
- 229940083254 peripheral vasodilators imidazoline derivative Drugs 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- 239000003760 tallow Substances 0.000 description 1
- 125000002948 undecyl 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])[H] 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
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- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
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- C10M133/40—Six-membered ring containing nitrogen and carbon only
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- 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
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- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/043—Ammonium or amine salts thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/01—Emulsions, colloids, or micelles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S507/00—Earth boring, well treating, and oil field chemistry
- Y10S507/939—Corrosion inhibitor
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
Denne oppfinnelse angår en inhibitor mot korrosjon ved C02 og H2S i vann-i-olje-emulsjoner. Inhibitoren vil motvirke korrosjon som skyldes C02 og H2S ("surgass") bl.a. ved transport og lagring av råoljer, som i alminnelighet foreligger som vann-, særlig saltvann-i-olje-emulsjoner.
Ved oljeutvinning, transport og lagring av olje er det kjent og vanlig praksis at oljen ved injisering tilsettes en oppløsning eller dispersjon av korrosjonsinhibitorer, slik at det på overflaten av de metalldeler som kommer i berøring med oljen, dannes et beskyttelsessjikt.
BRD-off.skrift 28 46 977 angir for disse formål korrosjonsinhibitorer bestående av imidazolinsalt, et oljeløselig løsningsmiddel for imidazolinsaltet og en hydrokarbonolje.
Når det gjelder saltvannholdige vann-i-olje-emulsjoner (i det følgende kort betegnet "V/O-emulsjoner"), har det imidlertid vist seg at imidazolinsalter, slik de er beskrevet i ovennevnte litteratur, ikke i tilstrekkelig grad undertrykker den korrosjon som skyldes H2S og C02. Anvendelsen av imidazolinene kompliseres dessuten ved at de må anvendes sammen med spesifikke løsnings-midler og hydrokarbonoljen, slik at kostnadene ved anvendelsen blir for høye.
Gjenstanden for den europeiske patentsøknad 60 455 er en inhibitor mot C02- og H2S-forårsaket korrosjon i vann-i-olje-emulsjoner, på basis av et reaksjonsprodukt av imidazolin-
eller tetrahydropyrimidin-derivater eller de ring-åpne forprodukter derav med elementært svovel. Disse inhibitorer er meget virksomme, men deres fremstilling er som følge av den absolutt nødvendige innarbeidelse av svovel energikrevende, og deres virkning som inhibitor er ikke i alle tilfeller optimal.
Siktemålet med oppfinnelsen er, med basis i inhibitorer av ovennevnte type, å tilveiebringe forbedringer for oppnåelse av en enda bedre korrosjonsbeskyttelse mot H2S og C02 i vann-i-olje-emuls joner , først og fremst i saltvann-i-olje-emulsjoner.
Dette ble overraskende opnådd med blandinger inneholdende de nedenfor, og i kravet, angitte bestanddeler. Oppfinnelsen angår en inhibitor mot korrosjon ved C02 og H2S i vann-i-olje-emuls joner, karakterisert ved at den inneholder
A) forbindelser med formelen I
eller deres ring-åpne forprodukter med formelen Ia
i hvilke R<1> = Cg- til C22-alkyl eller -alkenyl
X = -0H eller -NH2 og
n = 2 eller 3,
og
B) maleinamidsyrer med formelen II
i hvilken R<3> = C8- til C22-alkyl eller -alkenyl,
hvor bestanddelene A og B er anvendt i molforholdet A:B = 1:4 til 4:1,
hvor bestanddel A eventuelt er blitt omsatt med elementært svovel i vektforholdet 100:1 til 2:1 ved 100-200°C, og -NH2-gruppen kan foreligge i protonert form når X i komponent A er
-NH2.
Forbindelsene tilsvarende bestanddel A i produktet ifølge oppfinnelsen er imidazoliner (n = 2) eller tetrahydropyrimidiner (n = 3) med formelen I eller deres ring-åpne forprodukter med formelen Ia.
Herved betyr R<1> en langkjedet, eventuelt forgrenet alkyl-eller alkenylrest med 6-22, fortrinnsvis 8-17 karbonatomer.
Fremstillingen av de heterocykliske forbindelser og deres ring-åpne forprodukter hører til teknikkens stand og behøver ingen detaljert redegjørelse. Man omsetter vanligvis karboksyl-syrer med formelen R<1>COOH med dietylentriamin, dipropylentriamin, aminoetyletanolamin eller aminopropylpropanolamin ved 13 0 - 170°C og erholder først et syreamid med formelen Ia, hvilket kan anvendes som inhibitor-bestanddel. R<1> har her den ovenfor nevnte betydning.
Syrer med formelen R<1>C00H er eksempelvis 2-etylheksansyre, nonansyre, oljesyre, stearinsyre, laurinsyre, elaidinsyre og blandinger av naturlige fettsyrer, såsom kokos- eller talgfett-syrer.
Deretter utføres ringslutningsreaksjonen ved 190 - 250°C, hvorved det erholdes et imidazolin eller tetrahydropyrimidin.
Spesielt verdifulle inhibitorbestanddeler er slike forbindelser som er avledet fra C12- t^1 C20-karboksylsyrer, eksempelvis forbindelser med formlene
samt de tilsvarende mettede 7H35-derivater.
Ifølge en spesiell utførelsesform kan imidazolin- og tetrahydropyrimidin-derivatene eller deres ring-åpne forprodukter deretter blandes med svovel, som hensiktsmessig skal foreligge i kolloidal form (dvs. som svovelblomme), og etter denne sammen-blanding bringes til omsetning under oppvarming til 100 - 200°C i 1 - 3 timer. Svovelet er herunder klart oppløselig.
Vektforholdet mellom imidazolin eller tetrahydropyrimidin eller ring-åpent forprodukt og svovel kan være 100:1 til 2:1, fortrinnsvis 100:1 til 4:1.
Som bestanddel B anvendes de som korrosjonsinhibitorer i og for seg kjente, allerede definerte maleinamidsyrer med formelen II
I denne betyr R en Cg- til C22~■, fortrinnsvis en C1Q- til C^-alkyl- eller alkenylrest, eksempelvis en decyl-, undecyl-, dodecyl-, tridecyl-, heksadecyl-rest eller en tilsvarende enkelt-umettet rest. Spesielt foretrukket er decyl-, dodecyl-, pen-tadecyl- og tridecyl-rester med uforgrenede eller forgrenede karbonkj eder.
Bestanddelene A og B blandes i molforholdet A:B fra 1:4 til 4:1, fortrinnsvis 1:2 til 2:1, hensiktsmessig under oppvarm-ning til 60 - 80°C.
Til forbedring av doseringen kan de eventuelt bruksferdig fortynnes med et løsningsmiddel, såsom xylen eller toluen.
Videre er det mulig å blande inhibitorene ifølge oppfinnelsen med andre stoffer, eksempelvis ytterligere inhibitorer eller hjelpemidler.
De således erholdte preparater, som i fri form kan tilsettes V/O-emulsjonene, frembyr sammenlignet med produktene ifølge ovennevnte EPO-søknad nr. 60 455, en øket beskyttelse mot H2S- og CC^-korrosjon. De tilsettes, alt etter råoljeemulsjonens opp-rinnelse og sammensetning, i mengder på fra 10 til 1 000 ppm, beregnet på emulsjonen, dvs. i mengder som tydelig viser den synergiske virkning av de to bestanddeler i blandingen, da disse nå hver for seg anvendes i vesentlig lavere mengder.
De følgende eksempler vil ytterligere belyse oppfinnelsen.
EKSEMPLER
For utprøvning av inhibitorblandingene ble det utført en dynamisk test (såkalt "Wheel-Test"), en metode med hvilken korrosjonsinhibitorer utprøves ved jordolje- og jordgassutvinning.
Som testkuponger ble det valgt stålblikk med dimensjonene 130 mm x 10 mm x 1 mm. Disse blikkstrimler ble smerglet, avfettet med toluen og veiet. Som testmedium ble det anvendt testbensin inneholdende emulgert saltvann med 3 vektprosent NaCl, beregnet på vanninnholdet. Emulsjonen inneholdt 50 vektprosent saltvann og var mettet med H^ S + C02*;Deretter ble 250 ppm, beregnet på vekten av emulsjonen, av inhibitor tilsatt. ;De avfettede og veiede blikkstrimler ble deretter innført i emulsjonene og underkastet en mekanisk bevegelse (40 omdrei-ninger pr. min ved hjelp av en aksel som dreiet testbeholderen) ved 80°C i 16 timer. ;Testblikkstrimlene ble deretter renset med en inhibert syre, avfettet, tørket og veiet for bestemmelse av vekttapet. Bedømmelsen ble utført ved sammenligning med blindverdien (for-søk uten tilsetning av inhibitor). ;Fra veieresultatene ble korrosjonshastigheten og derav den prosentvise korrosjonsbeskyttelse Z beregnet: ;hvor GQ er korrosjonshastigheten uten inhibitor, og G^ er has-tigheten med inhibitor. ;Resultatene vil fremgå av de følgende tabeller: ;De med <*> betegnede prøver representerer inhibitoren ifølge oppfinnelsen og er 1:1-blandinger med maleinisotridecylamid-syre.
Inhibitorene ifølge oppfinnelsen viser således, i forhold til sammenligningsproduktene, en entydig bedre korrosjonsbeskyt-telsesvirkning.
Claims (1)
- Inhibitor mot korrosjon ved C02 og H2S i vann-i-olje-emuls joner ,karakterisert ved at den inneholder A) forbindelser med formelen Ieller deres ring-åpne forprodukter med formelen Iai hvilke R<1> = C6- til C22-alkyl eller -alkenyl X = -OH eller -NH2 og n - 2 eller 3, og B) maleinamidsyrer med formelen IIi hvilken R<3> = C8- til C22-alkyl eller -alkenyl,hvor bestanddelene A og B er anvendt i molforholdet A:B = 1:4 til 4:1,hvor bestanddel A eventuelt er blitt omsatt med elementært svovel i vektforholdet 100:1 til 2:1 ved 100-200°C, og -NH2-gruppen kan foreligge i protonert form når X i komponent A er -NH2 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823232921 DE3232921A1 (de) | 1982-09-04 | 1982-09-04 | Inhibitoren gegen die korrosion von co(pfeil abwaerts)2(pfeil abwaerts) und h(pfeil abwaerts)2(pfeil abwaerts)s in wasser-in-oel-emulsionen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO833148L NO833148L (no) | 1984-03-05 |
| NO161384B true NO161384B (no) | 1989-05-02 |
| NO161384C NO161384C (no) | 1989-08-09 |
Family
ID=6172479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO833148A NO161384C (no) | 1982-09-04 | 1983-09-02 | Inhibitor mot korrosjon ved co2 og h2s i vann-i-olje-emulsjoner. |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4517114A (no) |
| EP (1) | EP0103737B1 (no) |
| CA (1) | CA1200373A (no) |
| DE (2) | DE3232921A1 (no) |
| NO (1) | NO161384C (no) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4722805A (en) * | 1984-09-11 | 1988-02-02 | Petrolite Corporation | Multifunctional corrosion inhibitors |
| DE3437936A1 (de) * | 1984-10-17 | 1986-04-17 | Peter, Siegfried, Prof.Dr., 8525 Uttenreuth | Verfahren und mittel zur bekaempfung der korrosion unter reduzierenden bedingungen |
| EP0262086B1 (de) * | 1986-09-02 | 1992-01-02 | Ciba-Geigy Ag | Korrosionsschutzmittel |
| GB8811696D0 (en) * | 1988-05-18 | 1988-06-22 | Fodor J | Method of reducing friction & wear between bodies in relative motion |
| US5250225A (en) * | 1991-02-04 | 1993-10-05 | Basf Aktiengesellschaft | Ammonium salt of an alkenylsuccinic half-amide and the use thereof as corrosion inhibitor in oil and/or gas production technology |
| GB9116684D0 (en) * | 1991-08-02 | 1991-09-18 | Exxon Chemical Patents Inc | Corrosion inhibitors |
| US5322630A (en) * | 1992-05-14 | 1994-06-21 | Exxon Chemical Patents Inc. | Amine derivatives as corrosion inhibitors |
| GB2299331B (en) * | 1995-03-27 | 1998-11-18 | Nalco Chemical Co | Enhanced corrosion protection by use of friction reducers in conjunction with corrosion inhibitors |
| FR2762016B1 (fr) * | 1997-04-11 | 1999-06-04 | Atochem Elf Sa | Utilisation de thiols contenant des groupes amino comme inhibiteurs de corrosion dans l'industrie petroliere |
| FR2762017B1 (fr) * | 1997-04-11 | 1999-10-29 | Atochem Elf Sa | Utilisation de thiols contenant des groupes amino comme inhibiteurs de la corrosion des metaux |
| US7615520B2 (en) * | 2005-03-14 | 2009-11-10 | Afton Chemical Corporation | Additives and lubricant formulations for improved antioxidant properties |
| US7615519B2 (en) | 2004-07-19 | 2009-11-10 | Afton Chemical Corporation | Additives and lubricant formulations for improved antiwear properties |
| DE102005046642B4 (de) | 2005-09-29 | 2019-08-22 | Tib Chemicals Ag | Verfahren zum Schutz der Innenflächen von metallischen Bauteilen gegen Korrosion |
| US7709423B2 (en) | 2005-11-16 | 2010-05-04 | Afton Chemical Corporation | Additives and lubricant formulations for providing friction modification |
| US7776800B2 (en) * | 2005-12-09 | 2010-08-17 | Afton Chemical Corporation | Titanium-containing lubricating oil composition |
| US7767632B2 (en) | 2005-12-22 | 2010-08-03 | Afton Chemical Corporation | Additives and lubricant formulations having improved antiwear properties |
| US7682526B2 (en) * | 2005-12-22 | 2010-03-23 | Afton Chemical Corporation | Stable imidazoline solutions |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA628235A (en) * | 1961-09-26 | Roy A. Westlund, Jr. | Corrosion inhibitor | |
| US2944969A (en) * | 1957-02-06 | 1960-07-12 | Petrolite Corp | Prevention of rust and corrosion |
| DE1172925B (de) * | 1957-02-16 | 1964-06-25 | Basf Ag | Korrosionsschutzmittel |
| BE568954A (no) * | 1958-01-07 | |||
| US3674804A (en) * | 1968-10-17 | 1972-07-04 | Petrolite Corp | Imidazoline phosphonic acids |
| US3687847A (en) * | 1971-03-30 | 1972-08-29 | Texaco Inc | Composition and process for inhibiting corrosion in oil wells |
| JPS5223988B1 (no) * | 1971-07-29 | 1977-06-28 | ||
| US4101441A (en) * | 1975-12-29 | 1978-07-18 | Chemed Corporation | Composition and method of inhibiting corrosion |
| GB2010237B (en) * | 1977-10-31 | 1982-06-16 | Exxon Research Engineering Co | Brine compatible corrosion inhibitors |
| DE3109827A1 (de) * | 1981-03-14 | 1982-09-23 | Basf Ag | Inhibitoren gegen die korrosion von co(pfeil abwaerts)2(pfeil abwaerts) und h(pfeil abwaerts)2(pfeil abwaerts)s in wasser-in-oel-emulsionen |
| DE3119376A1 (de) * | 1981-05-15 | 1982-12-02 | Basf Ag, 6700 Ludwigshafen | Inhibitoren gegen die korrosion von h(pfeil abwaerts)2(pfeil abwaerts)s und co(pfeil abwaerts)2(pfeil abwaerts) in wasser-in-oel-emulsionen |
-
1982
- 1982-09-04 DE DE19823232921 patent/DE3232921A1/de not_active Withdrawn
-
1983
- 1983-08-11 DE DE8383107936T patent/DE3361858D1/de not_active Expired
- 1983-08-11 EP EP83107936A patent/EP0103737B1/de not_active Expired
- 1983-08-26 US US06/526,614 patent/US4517114A/en not_active Expired - Lifetime
- 1983-09-02 NO NO833148A patent/NO161384C/no not_active IP Right Cessation
- 1983-09-02 CA CA000435973A patent/CA1200373A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0103737A1 (de) | 1984-03-28 |
| NO833148L (no) | 1984-03-05 |
| DE3361858D1 (en) | 1986-02-27 |
| US4517114A (en) | 1985-05-14 |
| EP0103737B1 (de) | 1986-01-15 |
| DE3232921A1 (de) | 1984-03-08 |
| NO161384C (no) | 1989-08-09 |
| CA1200373A (en) | 1986-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |
Free format text: EXPIRED IN SEPTEMBER 2003 |