US2447380A - Process for metalizing nonmetallic articles - Google Patents
Process for metalizing nonmetallic articles Download PDFInfo
- Publication number
- US2447380A US2447380A US534170A US53417044A US2447380A US 2447380 A US2447380 A US 2447380A US 534170 A US534170 A US 534170A US 53417044 A US53417044 A US 53417044A US 2447380 A US2447380 A US 2447380A
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- US
- United States
- Prior art keywords
- metalizing
- silver nitrate
- articles
- article
- acetone
- 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
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Classifications
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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
- 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
- C23C18/31—Coating with metals
- C23C18/42—Coating with noble metals
- C23C18/44—Coating with noble metals using reducing agents
Definitions
- This invention relates to an improved process for plating non-metallic substances or articles such as plastics, paper, Celluloid, bone, hard rubber, wood, leather, cloth, horn, glass, porcelain, are plastic materials which are not reactive to alcohols, ketones and esters, and the products resulting therefrom.
- Objects of the present invention areto provide a novel, simple and inexpensive process for metallizing non-metallic substances, particularly plastics, one which may be carried out quickly by an unskilled worker, and one which will produce a durable and relatively inexpensive coating.
- the novel process is carried out in the following manner: a bath of acetone, denatured alcohol or iso-propyl alcohol and silver nitrate is first prepared.
- the alcohol and acetone are mixed in equal amounts, or a mixture of 20 per cent alcohol and 30 per cent acetone may be used, Since silver nitrate is not soluble, in the percentage required in acetone or the alcohols mentioned, it is necessary to first dissolve said nitrate in water.
- proportions of silver nitrate and water are preferably one gram of silver nitrate to one cubic centimeter of water.
- the dissolved silver nitrate is now added to the mixture of acetone and alcohol, the percentage of silver nitrate preferably being 10 per cent. If desired, this percentage can be increased to 15 per cent, but it is not deemed advisable to exceed this,
- a plain, clean sheet of cellulose nitrate plastic, or other article to be plated is dipped into this silver bath, which latter is maintained at room temperature. When a period of thirty seconds has elapsed, the plastic is removed from the bath, semi-dried, and then introduced into a reducing solution of sodium hydrosulphite.
- This second bath is made by mixing the sodium hydrosulphite with distilled water, the sodium salt forming a 5 to per cent solution. It is highly desirable to use distilled water and not spigot water.
- the resulting plated product is durable and has a wide variety of uses as is understood by those skilled in the art.
- the process of undercoating non-metallic articles for plating that comprises mixing a solution consisting of about 1 g. silver nitrate to 1 cc. water with an alcoholic-acetone mixture, containing between 20 and alcohol, in a proportion yielding from about 10% to about 15% silver nitrate, immersing a said article therein for about one-half minute at room temperature, semi-drying the article, and immersing the article in a solution consisting of 5-10% sodium hydrosulfite in distilled water.
Description
Patented Aug. 17, 1948 PROCESS FOR METALIZING N ONMETALLIC ARTICLES Frederick Ross Wenger, Los Angeles, Calif., assignor to Focal Company, Downey, Califl, a corporation of California No Drawing. Application May 4, 1944, Serial No. 534,170
2 Claims. 1
This invention relates to an improved process for plating non-metallic substances or articles such as plastics, paper, Celluloid, bone, hard rubber, wood, leather, cloth, horn, glass, porcelain, are plastic materials which are not reactive to alcohols, ketones and esters, and the products resulting therefrom.
Objects of the present invention areto provide a novel, simple and inexpensive process for metallizing non-metallic substances, particularly plastics, one which may be carried out quickly by an unskilled worker, and one which will produce a durable and relatively inexpensive coating.
The novel process is carried out in the following manner: a bath of acetone, denatured alcohol or iso-propyl alcohol and silver nitrate is first prepared. The alcohol and acetone are mixed in equal amounts, or a mixture of 20 per cent alcohol and 30 per cent acetone may be used, Since silver nitrate is not soluble, in the percentage required in acetone or the alcohols mentioned, it is necessary to first dissolve said nitrate in water. For this, proportions of silver nitrate and water are preferably one gram of silver nitrate to one cubic centimeter of water. The dissolved silver nitrate is now added to the mixture of acetone and alcohol, the percentage of silver nitrate preferably being 10 per cent. If desired, this percentage can be increased to 15 per cent, but it is not deemed advisable to exceed this,
A plain, clean sheet of cellulose nitrate plastic, or other article to be plated, is dipped into this silver bath, which latter is maintained at room temperature. When a period of thirty seconds has elapsed, the plastic is removed from the bath, semi-dried, and then introduced into a reducing solution of sodium hydrosulphite.
This second bath is made by mixing the sodium hydrosulphite with distilled water, the sodium salt forming a 5 to per cent solution. It is highly desirable to use distilled water and not spigot water.
After the plastic to be metallized has remained 2 in the reducing solution for approximately thirty seconds, it is removed and dried, and then is slightly burnished, The article is now ready to be plated in any suitable and well-known manner.
There is thus provided a novel and simple process for metallizing non-metallic substances, and
one which can be rapidly and inexpensively practiced. The resulting plated product is durable and has a wide variety of uses as is understood by those skilled in the art.
What is claimed is:
1. The process of undercoating non-metallic articles for plating that comprises mixing a solution consisting of about 1 g. silver nitrate to 1 cc. water with an alcoholic-acetone mixture, containing between 20 and alcohol, in a proportion yielding from about 10% to about 15% silver nitrate, immersing a said article therein for about one-half minute at room temperature, semi-drying the article, and immersing the article in a solution consisting of 5-10% sodium hydrosulfite in distilled water.
2. The process of undercoating non-metallic articles for plating that comprises mixing a solution consisting of about 1 gram silver nitrate to 1 cc. water with an alcoholic acetone mixture containing between 20 and 50% alcohol, in a proportion yielding from about 10 to about 15% silver nitrate, immersing a said article therein, and immersing the article in a solution of 5-10% sodium hydrosulfite in distilled water.
FREDERICK ROSS WENGER.
REFERENCES crrEn The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 906,229 Hoessle Dec. 8, 1908 1,834,812 Warren Dec. 1, 1931 2,278,722 Loiseleur Apr. 7, 1942 2,355,933 Weiss Aug. '15, 1944
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US534170A US2447380A (en) | 1944-05-04 | 1944-05-04 | Process for metalizing nonmetallic articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US534170A US2447380A (en) | 1944-05-04 | 1944-05-04 | Process for metalizing nonmetallic articles |
Publications (1)
Publication Number | Publication Date |
---|---|
US2447380A true US2447380A (en) | 1948-08-17 |
Family
ID=24128961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US534170A Expired - Lifetime US2447380A (en) | 1944-05-04 | 1944-05-04 | Process for metalizing nonmetallic articles |
Country Status (1)
Country | Link |
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US (1) | US2447380A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2686676A (en) * | 1949-04-08 | 1954-08-17 | Dictaphone Corp | Recording progress indicator for magnetic records |
US3523875A (en) * | 1967-03-15 | 1970-08-11 | Hooker Chemical Corp | Process for metal coating substrate pretreated with alkali metal sulfide and resultant product |
US4320403A (en) * | 1978-11-02 | 1982-03-16 | Bayer Aktiengesellschaft | Use of metallized sheet-form textile materials as reflection and polarization control media for microwaves |
US4439768A (en) * | 1978-11-02 | 1984-03-27 | Bayer Aktiengesellschaft | Metallized sheet form textile microwave screening material, and the method of use |
US6607308B2 (en) | 2001-02-12 | 2003-08-19 | E20 Communications, Inc. | Fiber-optic modules with shielded housing/covers having mixed finger types |
US6659655B2 (en) | 2001-02-12 | 2003-12-09 | E20 Communications, Inc. | Fiber-optic modules with housing/shielding |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US906229A (en) * | 1908-07-14 | 1908-12-08 | Heyden Chem Fab | Process of mirroring glass or like surfaces. |
US1834812A (en) * | 1927-08-02 | 1931-12-01 | British Metallising Company Lt | Metallizing or coating substances with metals |
US2278722A (en) * | 1936-10-21 | 1942-04-07 | Saint Gobain | Metallic coating |
US2355933A (en) * | 1941-04-12 | 1944-08-15 | Cohan Epner Co Inc | Process of metal plating |
-
1944
- 1944-05-04 US US534170A patent/US2447380A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US906229A (en) * | 1908-07-14 | 1908-12-08 | Heyden Chem Fab | Process of mirroring glass or like surfaces. |
US1834812A (en) * | 1927-08-02 | 1931-12-01 | British Metallising Company Lt | Metallizing or coating substances with metals |
US2278722A (en) * | 1936-10-21 | 1942-04-07 | Saint Gobain | Metallic coating |
US2355933A (en) * | 1941-04-12 | 1944-08-15 | Cohan Epner Co Inc | Process of metal plating |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2686676A (en) * | 1949-04-08 | 1954-08-17 | Dictaphone Corp | Recording progress indicator for magnetic records |
US3523875A (en) * | 1967-03-15 | 1970-08-11 | Hooker Chemical Corp | Process for metal coating substrate pretreated with alkali metal sulfide and resultant product |
US4320403A (en) * | 1978-11-02 | 1982-03-16 | Bayer Aktiengesellschaft | Use of metallized sheet-form textile materials as reflection and polarization control media for microwaves |
US4420757A (en) * | 1978-11-02 | 1983-12-13 | Bayer Aktiengesellschaft | Metallized sheet form textile material and method of making same |
US4439768A (en) * | 1978-11-02 | 1984-03-27 | Bayer Aktiengesellschaft | Metallized sheet form textile microwave screening material, and the method of use |
US6607308B2 (en) | 2001-02-12 | 2003-08-19 | E20 Communications, Inc. | Fiber-optic modules with shielded housing/covers having mixed finger types |
US6659655B2 (en) | 2001-02-12 | 2003-12-09 | E20 Communications, Inc. | Fiber-optic modules with housing/shielding |
US6874953B2 (en) | 2001-02-12 | 2005-04-05 | Jds Uniphase Corporation | Methods and apparatus for fiber-optic modules with shielded housings/covers with fingers |
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