GB1361445A - Creation of Inventions and Patents with Artificial Intelligence

GB1361445A – Selectively stripping metal surfaces and compositions therefor
– Google Patents

GB1361445A – Selectively stripping metal surfaces and compositions therefor
– Google Patents
Selectively stripping metal surfaces and compositions therefor

Info

Publication number
GB1361445A

GB1361445A
GB4104071A
GB4104071A
GB1361445A
GB 1361445 A
GB1361445 A
GB 1361445A
GB 4104071 A
GB4104071 A
GB 4104071A
GB 4104071 A
GB4104071 A
GB 4104071A
GB 1361445 A
GB1361445 A
GB 1361445A
Authority
GB
United Kingdom
Prior art keywords
thiourea
acid
hbf
sept
tin
Prior art date
1970-09-04
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
GB4104071A
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.)

IMASA SA

Original Assignee
IMASA SA
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.)
1970-09-04
Filing date
1971-09-02
Publication date
1974-07-24

1971-09-02
Application filed by IMASA SA
filed
Critical
IMASA SA

1974-07-24
Publication of GB1361445A
publication
Critical
patent/GB1361445A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

C23F1/00—Etching metallic material by chemical means

C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition

H—ELECTRICITY

H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

H05K3/00—Apparatus or processes for manufacturing printed circuits

H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding

H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process

H05K3/067—Etchants

Abstract

1361445 Acid stripping solutions IMASA SA 2 Sept 1971 [4 Sept 1970] 41040/71 Heading C7E [Also in Division B6] An acidic solution for use in the selective stripping of tin and/or lead from a copper substrate comprises (a) a nitro-substituted aromatic compound having at least one – NO 2 group attached to an aromatic nucleus and a watersolubilizing substituent also attached to the aromatic nucleus (b) an inorganic acid capable of reacting with tin and lead to form watersoluble salts and incapable of forming a waterinsoluble film thereon, and (c) a thiourea. Compound (a) may be (o-, m-, or p-) nitrobenzene sulphonic acid, nitrobenzoic acid, nitrochlorobenzene, nitroamiline, nitrophenol, or mixtures thereof, 0À1 to 180 g/l, (b) may be HBF 4 , H 2 SiF 6 , or NH 2 SO 3 H, 3-500 g/l and (c), thiourea, a G-C 4 alkyl thiourea, or an aryl thiourea, 0À1-220 g/l. The bath preferably contains an accelerator R. COOH where R is lower alkyl, aryl, or H, e.g. formic, acetic, propionic, 1-120 g/l, and where (b) is HBF 4 , the bath preferably contains 1-120 g/l of boric acid. A wetting agent may be present, e.g. nonyl phenoxy polyoxyethylene ethanol, tertiary octyl phenoxy polyethoxy ethanol, or quaternary ammonium imidazolinium/polyalkylene glycol; contact with the Cu is by immersion or spraying; solder may be selectively removed from printed circuits with the aid of masking tape.

GB4104071A
1970-09-04
1971-09-02
Selectively stripping metal surfaces and compositions therefor

Expired

GB1361445A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US6976970A

1970-09-04
1970-09-04

Publications (1)

Publication Number
Publication Date

GB1361445A
true

GB1361445A
(en)

1974-07-24

Family
ID=22091105
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB4104071A
Expired

GB1361445A
(en)

1970-09-04
1971-09-02
Selectively stripping metal surfaces and compositions therefor

Country Status (7)

Country
Link

US
(1)

US3677949A
(en)

JP
(1)

JPS5017336B1
(en)

CA
(1)

CA923024A
(en)

DE
(1)

DE2143785A1
(en)

ES
(1)

ES394816A1
(en)

FR
(1)

FR2102030A5
(en)

GB
(1)

GB1361445A
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2157323A
(en)

1984-04-02
1985-10-23
Parker Chemical Co
Improved flavour aluminium cleaning composition and process

Families Citing this family (29)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3841905A
(en)

1970-11-19
1974-10-15
Rbp Chem Corp
Method of preparing printed circuit boards with terminal tabs

US3888778A
(en)

1973-03-13
1975-06-10
Merton Beckwith
Bright dip composition for tin/lead

US3986970A
(en)

1973-05-02
1976-10-19
The Furukawa Electric Co., Ltd.
Solution for chemical dissolution treatment of tin or alloys thereof

US3926699A
(en)

1974-06-17
1975-12-16
Rbp Chemical Corp
Method of preparing printed circuit boards with terminal tabs

US4004956A
(en)

1974-08-14
1977-01-25
Enthone, Incorporated
Selectively stripping tin or tin-lead alloys from copper substrates

US3990982A
(en)

1974-12-18
1976-11-09
Rbp Chemical Corporation
Composition for stripping lead-tin solder

USRE29181E
(en)

1974-12-18
1977-04-12
Rbp Chemical Corporation
Method of preparing printed circuit boards with terminal tabs

US4175011A
(en)

1978-07-17
1979-11-20
Allied Chemical Corporation
Sulfate-free method of etching copper pattern on printed circuit boards

US4306933A
(en)

1980-02-11
1981-12-22
Chemline Industries
Tin/tin-lead stripping solutions

IT1144797B
(en)

1981-10-14
1986-10-29
Alfachimici Spa

SOLUTION FOR THE REMOVAL OF POND OR LEAD POND ALLOY FROM A SUBSTRATE BY SPRAY OPERATION

USRE32555E
(en)

1982-09-20
1987-12-08
Circuit Chemistry Corporation
Solder stripping solution

US4397753A
(en)

1982-09-20
1983-08-09
Circuit Chemistry Corporation
Solder stripping solution

US4732649A
(en)

1986-06-18
1988-03-22
Macdermid, Incorporated
Method for manufacture of printed circuit boards

ZA873845B
(en)

1986-06-18
1987-11-24
Macdermid, Incorporated
Method for manufacture of printed circuit boards

US4806200A
(en)

1986-06-18
1989-02-21
Macdermid, Incorporated
Method for manufacture of printed circuit boards

DE3738307A1
(en)

1987-11-11
1989-05-24
Ruwel Werke Gmbh

BATH SOLUTIONS AND METHOD FOR REMOVING LEAD / TIN, LEAD, OR TIN LAYERS ON COPPER OR NICKEL SURFACES

US4957653A
(en)

1989-04-07
1990-09-18
Macdermid, Incorporated
Composition containing alkane sulfonic acid and ferric nitrate for stripping tin or tin-lead alloy from copper surfaces, and method for stripping tin or tin-lead alloy

US4944851A
(en)

1989-06-05
1990-07-31
Macdermid, Incorporated
Electrolytic method for regenerating tin or tin-lead alloy stripping compositions

US4921571A
(en)

1989-07-28
1990-05-01
Macdermid, Incorporated
Inhibited composition and method for stripping tin, lead or tin-lead alloy from copper surfaces

US4956035A
(en)

1989-08-01
1990-09-11
Rd Chemical Company
Composition and process for promoting adhesion on metal surfaces

JPH0375386A
(en)

1989-08-18
1991-03-29
Metsuku Kk
Method for peeling tin or tin-lead alloy

US5017267A
(en)

1990-07-17
1991-05-21
Macdermid, Incorporated
Composition and method for stripping tin or tin-lead alloy from copper surfaces

DE4113283C2
(en)

1991-04-24
1994-05-05
Kernforschungsz Karlsruhe

Use of an etching solution for the selective etching of a metallic sacrificial layer in the production of microstructures

DE4219667C2
(en)

1992-06-16
1994-12-01
Kernforschungsz Karlsruhe

Tool and method for producing a microstructured plastic layer

EP1302569A3
(en)

2001-10-11
2004-03-03
Shipley Co. L.L.C.
Stripping solution

CN100339014C
(en)

2003-03-27
2007-09-26
中国人民解放军第三军医大学
Application of N-acetylglucosamine in dairy product and dairy product containing N-acetylglucosamine

DE102004014680B3
(en)

2004-03-25
2005-07-28
Dr.-Ing. Max Schlötter GmbH & Co KG
Demetallizing solution for removing tin-bismuth layers, e.g. from electronic or electrical components, containing acid (e.g. alkylsulfonic acid), nitroaromatic compound and aminopolycarboxylic acid

EP2503029B1
(en)

2011-03-22
2013-03-20
Atotech Deutschland GmbH
Process for etching a recessed structure filled with tin or a tin alloy

CN111705216B
(en)

2020-06-16
2021-12-03
云南锡业股份有限公司锡业分公司
Treatment process of tin soldering electrolytic anode mud

1970

1970-09-04
US
US69769A
patent/US3677949A/en
not_active
Expired – Lifetime

1971

1971-08-11
CA
CA120282A
patent/CA923024A/en
not_active
Expired

1971-08-25
FR
FR7130796A
patent/FR2102030A5/fr
not_active
Expired

1971-08-30
JP
JP46065944A
patent/JPS5017336B1/ja
active
Pending

1971-09-01
DE
DE19712143785
patent/DE2143785A1/en
active
Pending

1971-09-02
GB
GB4104071A
patent/GB1361445A/en
not_active
Expired

1971-09-04
ES
ES394816A
patent/ES394816A1/en
not_active
Expired

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2157323A
(en)

1984-04-02
1985-10-23
Parker Chemical Co
Improved flavour aluminium cleaning composition and process

Also Published As

Publication number
Publication date

FR2102030A5
(en)

1972-03-31

US3677949A
(en)

1972-07-18

JPS5017336B1
(en)

1975-06-20

CA923024A
(en)

1973-03-20

ES394816A1
(en)

1974-11-16

DE2143785A1
(en)

1972-03-16

Contact information