GB1305077A - - Google Patents

Info

Publication number
GB1305077A
GB1305077A GB4386070A GB4386070A GB1305077A GB 1305077 A GB1305077 A GB 1305077A GB 4386070 A GB4386070 A GB 4386070A GB 4386070 A GB4386070 A GB 4386070A GB 1305077 A GB1305077 A GB 1305077A
Authority
GB
United Kingdom
Prior art keywords
etchant
solution
etching
etching solution
sept
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
Application number
GB4386070A
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
Application filed filed Critical
Publication of GB1305077A publication Critical patent/GB1305077A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1617—Purification and regeneration of coating baths
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block

Abstract

1305077 Etching MACDERMID Inc 14 Sept 1970 [12 Sept 1969] 43860/70 Heading B6J A method of regenerating a chromic acid etching solution, e.g. for plastics substrates, comprises adding, with mixing, an alkali metal permanganate selected from sodium, potassium and lithium permanganates and mixtures thereof to the solution at a temperature of from 60 to 200‹ F. in a quantity of from 0À10 to 5À00 pounds per U.S. gallon of etching solution. The etchant may be a mixture of chromic, phospheric and sulphuric acids with water acting on a substrate of polypropylene or acrylonitrile-butadiene-styrene to be subsequently coated with metal. The permanganate may be added in powdered or crystalline form over a period of 5 to 30 minutes, the resultant sludge being removed from the regenerated etchant by filtration or decantation. The method may be used is a continuous etching process using an etching solution containing 1 to 25% by weight of chromium trioxide in solution and at least 30% by weight of sulphuric or phosphoric acids or mixtures thereof at a temperature of 60 to 200‹ F. a portion of the etchant being removed for regeneration periodically.
GB4386070A 1969-09-12 1970-09-14 Expired GB1305077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86154269A 1969-09-12 1969-09-12

Publications (1)

Publication Number Publication Date
GB1305077A true GB1305077A (en) 1973-01-31

Family

ID=25336092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4386070A Expired GB1305077A (en) 1969-09-12 1970-09-14

Country Status (7)

Country Link
US (1) US3650859A (en)
BE (1) BE756045A (en)
DE (1) DE2043576A1 (en)
ES (1) ES383605A1 (en)
FR (1) FR2061310A5 (en)
GB (1) GB1305077A (en)
NL (1) NL7013291A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808028A (en) * 1971-08-11 1974-04-30 Western Electric Co Method of improving adhesive properties of a surface comprising a cured epoxy
US3998991A (en) * 1974-03-29 1976-12-21 General Motors Corporation Transparent abrasion-resistant coating for a styrene acrylonitrile copolymer and method
US4073740A (en) * 1975-06-18 1978-02-14 Kollmorgen Technologies Corporation Composition for the activation of resinous bodies for adherent metallization
KR100856873B1 (en) * 2007-01-05 2008-09-04 연세대학교 산학협력단 Catalytic surface activation method for electroless deposition
LT6070B (en) * 2012-12-07 2014-09-25 Atotech Deutschland Gmbh Preparation of plastic surface for chemical metallization process
BR112016017812B1 (en) * 2014-04-01 2021-08-17 Atotech Deutschland Gmbh CORROSIVE SOLUTION AND PROCESSES FOR POLISHING AND METALIZING NON-CONDUCTIVE PLASTIC SURFACES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890944A (en) * 1956-05-25 1959-06-16 North American Aviation Inc Continuous chemical milling process
US3317330A (en) * 1965-01-05 1967-05-02 Chemclean Corp Method of treating polyethylene and polypropylene plastic surfaces

Also Published As

Publication number Publication date
DE2043576A1 (en) 1971-03-25
ES383605A1 (en) 1973-02-16
BE756045A (en) 1971-03-11
FR2061310A5 (en) 1971-06-18
US3650859A (en) 1972-03-21
NL7013291A (en) 1971-03-16

Similar Documents

Publication Publication Date Title
ES8101652A1 (en) Method for removing sulfide-containing scale from metal surfaces.
GB1305077A (en)
GB1354217A (en) Processes and compositions for the treatment of ferrous and zinc surfaces
KR840004792A (en) Nickel-In Alloy Products
EP0004807A3 (en) Activated carbon and process for regenerating it after use in the wet process production of phosphoric acid or alkali metal phosphates
JPS5554576A (en) Forming method for phosphate film of steel
ATE15876T1 (en) PROCESS FOR THE PREPARATION OF MAGNESIUM NITRATE AHYDRATE.
US2940877A (en) Paint stripping composition
IE781927L (en) Sodium metasilicate production
GB1316874A (en) Method of preparing calcium fluoride and soluble phosphate from fluorine containing phosphate rock
US2493579A (en) Solution for anodic polishing of steel and iron articles
GB1451352A (en) Method of suppressing mildew using a composition containing an alkanoic acid salt
GB1319347A (en) Process for the preparation of a hydroxyl-ammonium salt
GB1211417A (en) Process for the production of pure lactulose
GB896016A (en) A process for the manufacture of phosphoric acid
US2287683A (en) Furification of phosphoric acid
JPS55161074A (en) Recovering method for waste chromate solution
JPS5748949A (en) Preparation of ethylenediaminetetraacetic acid alkali metal salt
ES2000307A6 (en) Process for the manufacture of crystalline alkali metal aluminium phosphates.
JPS55145200A (en) Refining method for electrolytic polishing waste liquid
ES8201099A1 (en) Method of producing crystalline sodium aluminum phosphate.
Bialostocka et al. New Phosphating Processes Prior to Electrodeposition of Paint
JPS56115950A (en) Enzyme electrode for measuring urea
ES376636A1 (en) Procedure for the phosphate of electrogalvanized surfaces. (Machine-translation by Google Translate, not legally binding)
JPS56116889A (en) Surface treating agent

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees