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Patent US5230927A successfully refreshed from Google Patents.
US5230927A
Expired / Lapsed
US
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Method for metal-plating resin molded articles and metal-plated resin molded articles
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1991-07-31
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Granted: 1993-07-27
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Expires: 2011-07-31
Abstract
Abstract A process for metal plating a resin molded article molded from a resin composition containing as main components, a polyphenylene sulfide resin and a glass-reinforcing agent, which comprises, before the metal plating, (1) treating the resin molded article by immersion in a mixed liquid of nitric acid and a fluoride salt or in a mixed liquid of nitric acid and hydrofluoric acid (A treatment), then treating the resulting resin molded article by immersion in an organic polar solvent-containing liquid (B treatment), and further, if necessary, treating the resulting resin molded article by immersion in an aqueous floride salt or hydrofluoric acid solution (C treatment).
Inventors
- 👤 Chiharu Nishizawa
- 👤 Takahiro Seki
- 👤 Michio Oba
- 👤 Yukiya Nakazato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:41
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; C23C26/00; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
A process for metal plating a resin molded article molded from a resin composition containing as main components, a polyphenylene sulfide resin and a glass-reinforcing agent, which consists essentially of, before the metal plating, (1) treating the resin molded articles by immersion in a mixed liquid of nitric acid and a fluoride salt or in a mixed liquid of nitric acid and hydrofluoric acid (A treatment), then treating the resulting resin molded article by immersion in an organic polar solvent-containing liquid (B treatment), said liquid containing N-methylpyrrolidone and/or dimethylacetamide in an amount of at least 5 wt. % of the liquid, and further, if necessary, treating the resulting resin molded articles by immersion in an aqueous fluoride salt of hydrofluoric acid solution (C treatment).
Claim 2
Dependent Claim
124 words
A process for metal plating a resin molded article molded from a resin composition containing as main components, a polyphenylene sulfide resin and a glass-reinforcing agent, which consists essentially of, before the metal plating, (1) treating the resin molded articles by immersion in a mixed liquid of nitric acid and a fluoride salt or in a mixed liquid of nitric acid and hydrofluoric acid (A treatment), then treating the resulting resin molded article by immersion in an organic polar solvent-containing liquid (B treatment), said liquid containing N-methylpyrrolidone and/or dimethylacetamide in an amount of at least 5 wt. % of the liquid, and further, if necessary, treating the resulting resin molded articles by immersion in an aqueous fluoride salt of hydrofluoric acid solution (C treatment).
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein the polyphenylene sulfide resin contains the paraphenylene sulfide unit ##STR7## in an amount of at least 70 mole % of all the recurring units.
Claim 4
Dependent Claim
59 words
The process of claim 1 wherein the resin composition has a composition that (a) total amount of the polyphenylene sulfide resin and the glass-reinforcing agent is at least 60% by weight of the whole resin composition, and (b) the rate of the polyphenylene sulfide resin to the glass-reinforcing agent is in the range of 2:8 to 9:1 by weight.
Claim 5
Dependent Claim
36 words
The process of claim 1 wherein the mixed liquid in the A treatment contains per liter thereof 400 to 800 g of nitric acid and 50 to 300 g of the fluoride salt or hydrofluoric acid.
Claim 6
Dependent Claim
30 words
The process of claim 1 wherein the aqueous solution in the C treatment contains the fluoride salt and/or hydrofluoric acid in an amount of 5 to 60% by weight thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |