US2310239A - Corrosion resistant coating for metal surfaces - Google Patents

Corrosion resistant coating for metal surfaces Download PDF

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Publication number
US2310239A
US2310239A US416552A US41655241A US2310239A US 2310239 A US2310239 A US 2310239A US 416552 A US416552 A US 416552A US 41655241 A US41655241 A US 41655241A US 2310239 A US2310239 A US 2310239A
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US
United States
Prior art keywords
phosphate
metal
titanium
solution
coatings
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
Application number
US416552A
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English (en)
Inventor
George W Jernstedt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to IT429344D priority Critical patent/IT429344A/it
Priority to IT429345D priority patent/IT429345A/it
Application filed by Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Priority to US416552A priority patent/US2310239A/en
Priority to GB14472/42A priority patent/GB560848A/en
Priority to GB14471/42A priority patent/GB560847A/en
Priority to US465259A priority patent/US2322349A/en
Application granted granted Critical
Publication of US2310239A publication Critical patent/US2310239A/en
Priority to NL122082A priority patent/NL61411C/xx
Priority to FR940964D priority patent/FR940964A/fr
Priority to FR919414D priority patent/FR919414A/fr
Priority to CH261381D priority patent/CH261381A/de
Priority to CH268171D priority patent/CH268171A/de
Priority to BE472616D priority patent/BE472616A/xx
Priority to BE472617D priority patent/BE472617A/xx
Priority to ES0177918A priority patent/ES177918A1/es
Priority to ES0177919A priority patent/ES177919A1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

Definitions

  • This invention relates to the art of producing corrosion resistant coatings on the surfaces of ircn. zinc and other metals and alloys.
  • This invention relates ymore particularly to the production of phosphate coatings upon the surfaces of metals.
  • phosphate coatings are of great economical importance in the preparation of the metal surfaces for the reception of an organic finish.
  • the object -of this invention is to provide a preliminary treatment for metal surfaces to accelerate the formation of corrosion resisting coatings thereon.
  • Another object of this invention is to provide a composition capable of activating metal surfaces to improve the process of forming corrosion resisting coatings thereon.
  • a further object of the invention is to provide a treatment for metal surfaces to .produce protective phosphate coatings in a rapid and economical manner.
  • Figure 1 is a schematic view of one form of process for accomplishing the invention
  • Fig. 2 is a fragmentary sectional view of a metallic member carrying a protective coating produced by the treatment described herein.
  • Fig. 3 is a photomicrograph at 300X of zinc plated steel with ordinary phosphate treated surface
  • Fig. 4 is a .photomicrograph at 300X of zinc plated steel treated according to.the invention.
  • Fig. 5 is a photomicrograph at 300X of steel with ordinary phosphate surface treatment.
  • Fig. 6 is a photomicrograph at 300X of steel treated according to the invention.
  • phosphate coatings have been to a solution containing phosphoric acid and phosphates.
  • the time involved in treating the metal surface in order to secure a satisfactory protective coating usually has been reckoned in hours, but within recent years the time of treat. ment, has been reduced to a fraction of anzhour, for example, 15 minutes.
  • the time necessary for the reaction .between the metal surface and a composition capable of developing the phosphate coating thereon depends to a great extent upon the relative activity of the metal surface to the composition.
  • the bare metal surface has imparted to it improved characteristics whereby it is activated sol that the normal or vmodified phosphate coatingv compositions will form a phosphate lm or coating thereon with great rapidity, for example, in a minute or less.
  • metal surfaces which previously did not form satisfactory phosphate coatings successfully acquire phosphate good corrosion inhibiting coatings upon activation.
  • zinc does not form good protective phosphate coatings when coating compositions are applied, but with activation zinc will acquire coatings capable of meeting extreme corrosion requirements.
  • metal surfaces to be subsequently subjected to a treatment capable of producing crystalline phosphate coatings are activated by pretreatment with an activating solution.
  • the pretreatment comprises the application of a solution of disodium phosphate containing additions of small quantities of titanium as a compound. In the absence of titanium, the disodium phosphate has negligible activating effgit.
  • titanium compound is added to ortho-disodium phosphate in water solution.
  • soluble titanium compounds are employed for additions to the disodium phosphate. Titanium tetrachloride, titanium trichloride, titanium hydroxide, titanium nitride and titanium potassium oxalate have been employed for this purpose with highly satisfactory results. Less soluble compounds of titanium such as titanium carbide. titanium dioxide and titanium potassium fluoride however, have been added to disodium phosphate and al1 have rendered the disodium phosphate capable of activating metal surfaces.
  • the solu. tion of disodium phosphate with the titanium compound addition is preferably evaporated to dryness at temperatures above 60 C.
  • disodium ortho-phosphate is the only material which is satisfactory in producing the desired activation of metal surfaces.
  • Disodium phosphate has been found to be the most satisfactory for activating metal surfaces.
  • the dried disodium phosphate-titanium compound composition as prepared above may contain from 0.005% up to 20% by weight of titanium radical.
  • the dried composition is dissolved in water to produce a. solution suitable for use in activating treatment, having from 0.1% to 2% of disodium phosphate and generally from 0.005% to 0.05% of titanium ions in solution.
  • Titanium may be present in larger amounts with beneficial results. However, it has been found that from 01% to a saturated solution of diso- A 1% aqueous solution of disodium phosphate with 0.01% titanium radical appears to be the optimum concentration.
  • the pH at this concentray tion is from 8.0 to 8.5.
  • Fig. 1 of the drawings there is shown a schematic process which may be followed in applying the activating pretreatment to metal surfaces including the subsequent treatment in producing the' coated metal surface.
  • unactivated metal surfaces required treatment with a phosphate solution for 15 to 20 minutes.
  • a phosphate solution for 15 to 20 minutes.
  • several thousand gallons of solution were sprayed upon the metal before an adequate amount of phosphate coating was formed.
  • the coatings were non-uniform and it was desirable to paint such coatings as soon as possible.
  • metal surfaces may be sprayed or dipped in the phosphate solution 16, for a period of time of the order of one-half minute, to produce and extremely uniform and lne phosphate coating.
  • the metal forms largequantities of gaseous bubbles when the solution is first applied to the activated surfaces. It is believed that the bubbles consist mainly of hydrogen gas. After a. fraction of a minute, the bubbling ceases and the reaction is substantially complete. It is generally desirable to prolong the application of the solution to the metal surface for a short period of time beyond the point at which the gaseous bubbles cease to be given oil'.
  • the oxidizing agent will immediately react with the bubbles of nascent hydrogen and remove them from the surface of the. metal.
  • Otherl oxidizing agents such as sodium or potassium nitrate, are suitable for this purpose.
  • Zinc phosphate may be introduced to replace a part of the manganese phosphate in the solution for treating ferrous metals ⁇
  • the presence' o'f one or more of the group consisting of zinc, copper and manganese greatly expedites the reaction of the ferrous metal with the phosphate solution.
  • the metal surfaces are rinsed with water I8 contained in receptacle 20.
  • the surfaces are subjected to a sealing treatment at 22 with chromic acid solution 2l.
  • the chromic acid 24 consists of an Iaqueous solution of 71A, ounces of Cr(OH3) per 100 gallons of water.
  • the water rinse 20 is not necessary with the sealing treatment of chromic acid. Only a few seconds application of the chromic acid solution is necessary to secure a sealing of the phosphate coating to improve the corrosion resistance.
  • the metal Aafter a sealing treatment at 22, may be passed through a drying oven 26 to completeiy dry the surface for subsequent operations, such as applying of an organic finish.
  • the water rinse and drying oven stcps in the process may be dispensed with if the chromic acid solution 24 is heated-to a temperature of vabout 190 F., or even higher, suicient heat being imparted by the hot chromic acid solution to the metal so that after removal from the solution, the metal dries automatically in air.
  • the base metal has a 'distinct and separate layer 32 which is of substantially uniform thickness, and appears to be keyed to the metal 30.
  • the coating 32 is extremely durable and will withstand both chemical and mechanical abuse. remove the coating 32. Such coating is uniformly deposited over all the recesses and other irregularities in the surface of metal-body 30.
  • FIGs. 3 to 6 there are shown photomicrographs at a. magnification of 300X of sam'ples of material treated with prior art phosphate solutions alone, and treated as disclosed herein.
  • Fig. 3 shows a coarse, crystalline surface deposit of phosphates-on zinc plated steel. This was produced by applying a phosphate-phosphoric acid solution alone. The deposit is nonuniform withv large spaces between crystals. Such a surface deposit produces an unsatisfactory protective coating.
  • the coarse nature of the phosphate deposit in Fig. 3 requires the application of two or more coatings of organic finish to produce a smooth surface.
  • the organic finish does not adhere any ⁇ too well to the large crystals and its life is relatively short.
  • FIG. 4 shows a similar zinc plated steel member as in Fig. 3, with a phosphate coating produced by a predip in a disodium phosphate-titanium solution followed by an application of the same phosphate coating solution as Abrasion or scratching is necessary to empioyed alone for the Fig. 3 coating.
  • the miiform and fine grained phosphate deposit tn Fig. 4 is an outstanding feature. There are no open spaces in Fig. 4 as exist in Fig. 3.
  • the fine grained phosphate coating in Fig. 4 has beensatisfactorily coated with a single coating4 or'organic finish to produce a smooth, commercial outer surface. Due to its better corrosion-proonng organic finishes last longer when applied to the Fig. 4 surface. The bonding oi' the finish tothe ⁇ metal is enhanced by the fine grained phosphate deposit. y
  • Fig. 5 is a photomicrograph at a. magnification of 300X of an ordirmry steel member with the usual type of phosphate coating produced thereon by the application of a solution of phosphates and phosphoric acid alone.
  • the protective phosphate coating coarse grained, but its protection is limited.
  • lIt is customary to require that organic finishes be applied to ferrous metals within a few hours after the phosphate
  • the eectiveness of the predip in producing a o fine grained, highly protective phosphate is ev'ldent.
  • the Fig. 6 phosphate coating showsthe same superiority over lthe prior art coatings as does the zinc plated member subjected to the predip.
  • a composition which when in aqueous solution is capable of activating ferrous and zinc metal surfaces to provide for the application.
  • protective phosphate coatings which comprises disodium phosphate and more than 0.005% by weight of titanium, the titanium being present as a compound.
  • a composition'which when in aqueous solution is capable of activating ferrous and zinc metal surfaces to provide for the application of protective phosphate coatings which comprises 80% and cver of disodium phosphate and from 0.02% to by weight of titanium, the titanium being present as a compound.
  • An aqueous solution for use in activating ferrous and zinc metal surfaces comprising from 0.1% to 2.0% of disodium phosphate and 0.005% to 0.05% of titanium, the titanium being present as a compound.
  • An aqueous solution for activating ferrous and zinc metal surfaces to accelerate the formation of corrosion resisting coatings thereon comprising disodium phosphate and at least one t1- tanium compound.
  • the step comprising applying to the metal surface an aqueous solution of disodium phosphate and at least one titanium compound to activate the metal surface.
  • the step comprising applying to the metal surface an aqueous solution containing 0.1% to 2% disodium phosphate and from 0.005% to 0.05% titanium to activate the metal surfaces, the titanium being present as a compound which may be ionized.
  • titanium present as a compound, to activate the metal surface and applying a solution of phosphoric acid, phosphates, and an oxidizing agent to the activated metal surface to produce a protective phosphate coating thereon.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemically Coating (AREA)
US416552A 1941-10-25 1941-10-25 Corrosion resistant coating for metal surfaces Expired - Lifetime US2310239A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
IT429344D IT429344A (de) 1941-10-25
IT429345D IT429345A (de) 1941-10-25
US416552A US2310239A (en) 1941-10-25 1941-10-25 Corrosion resistant coating for metal surfaces
GB14472/42A GB560848A (en) 1941-10-25 1942-10-15 Improvements in and relating to the production of phosphate coatings on the surfacesof metals and alloys
GB14471/42A GB560847A (en) 1941-10-25 1942-10-15 A method of producing compositions for activating metal and alloy metal surfaces to improve the process of forming corrosion resistant coatings thereon
US465259A US2322349A (en) 1941-10-25 1942-11-11 Corrosion resistant coating for metal surfaces
NL122082A NL61411C (de) 1941-10-25 1945-11-21
FR919414D FR919414A (fr) 1941-10-25 1945-12-26 Perfectionnements à la protection des métaux contre la corrosion
FR940964D FR940964A (fr) 1941-10-25 1945-12-26 Revêtement anticorrosif pour surfaces métalliques
CH261381D CH261381A (de) 1941-10-25 1947-03-10 Verfahren zur Herstellung von korrosionsbeständigen Phosphatdeckschichten auf Metalloberflächen.
CH268171D CH268171A (de) 1941-10-25 1947-03-10 Verfahren zur Herstellung von Gemischen für die Aktivierung von Metalloberflächen.
BE472616D BE472616A (de) 1941-10-25 1947-04-17
BE472617D BE472617A (de) 1941-10-25 1947-04-17
ES0177918A ES177918A1 (es) 1941-10-25 1947-05-06 Un procedimiento de tratar superficies metalicas para producir en ellas capas de fosfato resistentes a la corrosion
ES0177919A ES177919A1 (es) 1941-10-25 1947-05-06 Un procedimiento de producir composiciones para activar superficies metalicas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416552A US2310239A (en) 1941-10-25 1941-10-25 Corrosion resistant coating for metal surfaces

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US2310239A true US2310239A (en) 1943-02-09

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US416552A Expired - Lifetime US2310239A (en) 1941-10-25 1941-10-25 Corrosion resistant coating for metal surfaces

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US (1) US2310239A (de)
BE (2) BE472617A (de)
CH (2) CH268171A (de)
ES (2) ES177919A1 (de)
FR (2) FR940964A (de)
GB (2) GB560847A (de)
IT (2) IT429344A (de)
NL (1) NL61411C (de)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449495A (en) * 1944-01-12 1948-09-14 Westinghouse Electric Corp Application of phosphate protective coatings to nonferrous metals
US2456947A (en) * 1944-12-21 1948-12-21 Westinghouse Electric Corp Corrosion resistant coating for metal surfaces
US2462196A (en) * 1943-07-29 1949-02-22 Westinghouse Electric Corp Protective phosphate coatings for metal surfaces
US2800422A (en) * 1953-04-20 1957-07-23 Piccinelli Achille Process for rust-proofing and passivating iron articles
US2809749A (en) * 1955-06-30 1957-10-15 Du Pont Sodium container
US2866728A (en) * 1956-04-30 1958-12-30 Tennessee Corp Dry manganous phosphate compounds
US2874081A (en) * 1956-08-02 1959-02-17 Parker Rust Proof Co Pretreatment solution for phosphate coating, method of preparing the same and process of treating metal surfaces
US2875110A (en) * 1953-06-29 1959-02-24 Sandvikens Jerwerks Aktiebolag Corrosion resistant treatment for hollow drill rods
US3007817A (en) * 1957-11-29 1961-11-07 Parker Rust Proof Co Cold cleaning and cold phosphate coating process
US3425876A (en) * 1965-10-26 1969-02-04 Amchem Prod Phosphate coating process
US3819422A (en) * 1971-12-28 1974-06-25 Amchem Prod Method for applying zinc phosphate coatings to metal surfaces
US4152176A (en) * 1978-08-07 1979-05-01 R. O. Hull & Company, Inc. Method of preparing titanium-containing phosphate conditioner for metal surfaces
US4330345A (en) * 1980-12-08 1982-05-18 Chemfil Corporation Phosphate coating process and composition
US4497667A (en) * 1983-07-11 1985-02-05 Amchem Products, Inc. Pretreatment compositions for metals
US4539051A (en) * 1983-03-02 1985-09-03 Parker Chemical Company Process for producing phosphate coatings
US4770717A (en) * 1987-09-30 1988-09-13 Monsanto Company Compositions and process for metal treatment
US4957568A (en) * 1988-04-28 1990-09-18 Henkel Kommanditgesellschaft Auf Aktien Composition and process for activating metal surfaces prior to zinc phosphating and process for making said composition
US5026423A (en) * 1989-02-22 1991-06-25 Monsanto Chemical Company Compositions and process for metal treatment
US5039362A (en) * 1988-04-28 1991-08-13 Henkel Kommanditgesellschaft Auf Aktien Titanium free composition and process for activating metal surfaces prior to zinc phosphating
US5112395A (en) * 1989-02-22 1992-05-12 Monsanto Company Compositions and process for metal treatment
US5116521A (en) * 1988-07-07 1992-05-26 Nippondenso Co., Ltd. Aqueous lubrication treatment liquid and method of cold plastic working metallic materials
US5326408A (en) * 1993-06-15 1994-07-05 Henkel Corporation Rapidly dissolving and storage stable titanium phosphate containing activating composition
US5494504A (en) * 1994-09-12 1996-02-27 Ppg Industries, Inc. Liquid rinse conditioner for phosphate conversion coatings
WO1998039498A1 (en) 1997-03-07 1998-09-11 Henkel Corporation Conditioning metal surfaces prior to phosphate conversion coating
US6214132B1 (en) 1997-03-07 2001-04-10 Henkel Corporation Conditioning metal surfaces prior to phosphate conversion coating
US6361623B1 (en) 1997-06-13 2002-03-26 Henkel Corporation Method for phosphatizing iron and steel
US6478860B1 (en) 1998-07-21 2002-11-12 Henkel Corporation Conditioning metal surfaces before phosphating them
US6551417B1 (en) 2000-09-20 2003-04-22 Ge Betz, Inc. Tri-cation zinc phosphate conversion coating and process of making the same
US20040112471A1 (en) * 2001-01-09 2004-06-17 Yoshio Moriya Aqueous surface conditioner and surface conditioning method for phospating treatment
US20060086282A1 (en) * 2004-10-25 2006-04-27 Zhang Jun Q Phosphate conversion coating and process
DE102008047533A1 (de) 2008-09-16 2010-04-15 Sachtleben Chemie Gmbh Verfahren zur Herstellung von Titan-IV-phosphat

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR113278A (de) * 1954-10-14
GB886576A (en) * 1959-02-19 1962-01-10 Geigy Ag J R Improvements relating to metallisable and metal-containing disazo dyestuffs and their use
NL279119A (de) * 1961-06-01
US4808245A (en) * 1986-11-10 1989-02-28 Nihon Parkerizing Co., Ltd. Method for drawing iron and steel wire rod

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462196A (en) * 1943-07-29 1949-02-22 Westinghouse Electric Corp Protective phosphate coatings for metal surfaces
US2449495A (en) * 1944-01-12 1948-09-14 Westinghouse Electric Corp Application of phosphate protective coatings to nonferrous metals
US2456947A (en) * 1944-12-21 1948-12-21 Westinghouse Electric Corp Corrosion resistant coating for metal surfaces
US2800422A (en) * 1953-04-20 1957-07-23 Piccinelli Achille Process for rust-proofing and passivating iron articles
US2875110A (en) * 1953-06-29 1959-02-24 Sandvikens Jerwerks Aktiebolag Corrosion resistant treatment for hollow drill rods
US2809749A (en) * 1955-06-30 1957-10-15 Du Pont Sodium container
US2866728A (en) * 1956-04-30 1958-12-30 Tennessee Corp Dry manganous phosphate compounds
US2874081A (en) * 1956-08-02 1959-02-17 Parker Rust Proof Co Pretreatment solution for phosphate coating, method of preparing the same and process of treating metal surfaces
US3007817A (en) * 1957-11-29 1961-11-07 Parker Rust Proof Co Cold cleaning and cold phosphate coating process
US3425876A (en) * 1965-10-26 1969-02-04 Amchem Prod Phosphate coating process
US3819422A (en) * 1971-12-28 1974-06-25 Amchem Prod Method for applying zinc phosphate coatings to metal surfaces
US4152176A (en) * 1978-08-07 1979-05-01 R. O. Hull & Company, Inc. Method of preparing titanium-containing phosphate conditioner for metal surfaces
US4330345A (en) * 1980-12-08 1982-05-18 Chemfil Corporation Phosphate coating process and composition
US4539051A (en) * 1983-03-02 1985-09-03 Parker Chemical Company Process for producing phosphate coatings
US4497667A (en) * 1983-07-11 1985-02-05 Amchem Products, Inc. Pretreatment compositions for metals
US4770717A (en) * 1987-09-30 1988-09-13 Monsanto Company Compositions and process for metal treatment
US4957568A (en) * 1988-04-28 1990-09-18 Henkel Kommanditgesellschaft Auf Aktien Composition and process for activating metal surfaces prior to zinc phosphating and process for making said composition
AU610386B2 (en) * 1988-04-28 1991-05-16 Henkel Kommanditgesellschaft Auf Aktien Polymeric titanium phosphates, process for preparing same and use thereof for activating metal surfaces prior to zinc phosphating
US5039362A (en) * 1988-04-28 1991-08-13 Henkel Kommanditgesellschaft Auf Aktien Titanium free composition and process for activating metal surfaces prior to zinc phosphating
US5112414A (en) * 1988-04-28 1992-05-12 Henkel Kommanditgesellschaft Auf Aktien Titanium free composition and process for activating metal surfaces prior to zinc phosphating
US5116521A (en) * 1988-07-07 1992-05-26 Nippondenso Co., Ltd. Aqueous lubrication treatment liquid and method of cold plastic working metallic materials
US5026423A (en) * 1989-02-22 1991-06-25 Monsanto Chemical Company Compositions and process for metal treatment
US5112395A (en) * 1989-02-22 1992-05-12 Monsanto Company Compositions and process for metal treatment
US5326408A (en) * 1993-06-15 1994-07-05 Henkel Corporation Rapidly dissolving and storage stable titanium phosphate containing activating composition
WO1994029495A1 (en) * 1993-06-15 1994-12-22 Henkel Corporation Rapidly dissolving and storage stable titanium phosphate containing activating composition
US5494504A (en) * 1994-09-12 1996-02-27 Ppg Industries, Inc. Liquid rinse conditioner for phosphate conversion coatings
WO1998039498A1 (en) 1997-03-07 1998-09-11 Henkel Corporation Conditioning metal surfaces prior to phosphate conversion coating
US6214132B1 (en) 1997-03-07 2001-04-10 Henkel Corporation Conditioning metal surfaces prior to phosphate conversion coating
US6361623B1 (en) 1997-06-13 2002-03-26 Henkel Corporation Method for phosphatizing iron and steel
US6478860B1 (en) 1998-07-21 2002-11-12 Henkel Corporation Conditioning metal surfaces before phosphating them
US6551417B1 (en) 2000-09-20 2003-04-22 Ge Betz, Inc. Tri-cation zinc phosphate conversion coating and process of making the same
US20040112471A1 (en) * 2001-01-09 2004-06-17 Yoshio Moriya Aqueous surface conditioner and surface conditioning method for phospating treatment
US20060086282A1 (en) * 2004-10-25 2006-04-27 Zhang Jun Q Phosphate conversion coating and process
DE102008047533A1 (de) 2008-09-16 2010-04-15 Sachtleben Chemie Gmbh Verfahren zur Herstellung von Titan-IV-phosphat
US20110185945A1 (en) * 2008-09-16 2011-08-04 Sachtleben Chemie Gmbh Process for the Production of Titanium-IV-Phosphate

Also Published As

Publication number Publication date
FR940964A (fr) 1948-12-29
CH261381A (de) 1949-05-15
NL61411C (de) 1948-07-15
IT429344A (de) 1900-01-01
IT429345A (de) 1900-01-01
CH268171A (de) 1950-05-15
ES177918A1 (es) 1947-06-16
FR919414A (fr) 1947-03-07
GB560848A (en) 1944-04-24
BE472616A (de) 1947-05-31
ES177919A1 (es) 1947-06-16
GB560847A (en) 1944-04-24
BE472617A (de) 1947-05-31

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