US3898136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating shaped resin articles
Assignee: MITSUBUSHI GAS CHEMICAL COMPAN
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Filing: 1974-03-15
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Granted: 1975-08-05
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Expires: 1994-03-15
Abstract
Abstract A process is disclosed for coating the surface of a shaped article of epoxy resin or polyphenylene oxide resin with a metal by treating the surface of the article with a compound having the formula RO(AO)nR'' wherein one of R and R'' is an alkyl or acyl group having not more than four carbon atoms and the other of R and R'' is hydrogen atom or an alkyl or acyl group having not more than four carbon atoms, A is a straight or branched C2 to C4 alkylene group, and n is an integer from 1 to 4, further treating the surface with a conventional chemical etchant, and thereafter coating the treated surface of the shaped article with metal. The process provides a strongly adhering metal coating.
Inventors
- 👤 Eiichi Yonemitsu
- 👤 Akitoshi Sugio
- 👤 Yukiya Masuda
- 👤 Toshihiko Kobayashi
- 👤 Masaki Fujihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:26
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08J7/042; C08J7/0423; C08J7/043; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/2026; C23C18/2033; C23C18/2046; C23C18/2073; C23C18/2086; C23C18/22; C23C18/24; C23C18/28; C23C18/285; C23C18/30; C08J2371/00; C08J2371/02; C08J2465/00; C08J2465/02; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10S; Y10S205/00; Y10S205/924
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
A PROCESS FOR COATING THE SURFACE OF A SHAPED ARTICLES OF EPOXY RESIN OR POLYPHENYLENE OXIDE RESIN WITH A METAL WHICH COMPRISES TREATING SAID SURFACE WITH A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
31 words
A PROCESS FOR COATING THE SURFACE OF A SHAPED ARTICLES OF EPOXY RESIN OR POLYPHENYLENE OXIDE RESIN WITH A METAL WHICH COMPRISES TREATING SAID SURFACE WITH A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
32 words
A process as claimed in claim 1, wherein said metal is one member selected from the group consisting of gold, silver, copper, nickel, tin, chromium, cobalt, lead, zinc, platinum, lead-tin and nickel-cobalt.
Claim 4
Dependent Claim
30 words
A process as claimed in claim 1, wherein said chemical etchant is one member selected from the group consisting of chromic acid-sulfuric acid, chromic acid-nitric acid and chromic acid-phosphoric acid.
Claim 5
Dependent Claim
25 words
A PROCESS AS CLAIMED IN CLAIM 1 WHEREIN THE APPLICATION OF SAID METAL COATING IS EFFECTED BY VACUUM EVAPORATION OR ELECTROLESS PLATING FOLLOWED BY ELECTROPLATING.
Claim 6
Dependent Claim
31 words
A process as claimed in claim 1, wherein the compound for the pretreatment is used as such or in aqueous solution at a concentration of at least 70 percent by volume.
Claim 7
Dependent Claim
16 words
A process as claimed in claim 1, wherein said epoxy resin is a thermosetting epoxy resin.
Claim 8
Dependent Claim
37 words
A process as claimed in claim 1, wherein said polyphenylene oxide resin is a resin blend of 25 - 80 percent by weight of polyphenylene oxide with 20 - 75 percent by weight of impact resisting polystyrene.
Claim 9
Dependent Claim
186 words
A process for coating a shaped article of epoxy resin or polyphenylene oxide resin on its surface with a metal, which comprises treating the surface of said shaped article with a compound of the formula RO (AO)n R'' wherein one of R and R'' is an alkyl or acyl group with not more than 4 carbon atoms and the remaining one of said R and R'' is hydrogen or an alkyl or acyl group with not more than 4 carbon atoms, A is a straight or branched chain C2 to C4-alkylene group and n is an integer of 1 to 2, as such or in aqueous solution at a concentration of not less than 70 percent by volume at a temperature of from 20*C to the boiling point of the treating liquid used; then, after rinsing, treating the above treated surface with a chemical etchant selected from the group consisting of chromic acid-sulfuric acid, chromic acid-nitric acid and chromic acid-phosphoric acid, at a temperature of from ambieNt temperature up to 100*C. for a sufficient time to roughen said surface; and subsequently applying thereto a metal coating.
Claim 10
Dependent Claim
186 words
A process for coating a shaped article of epoxy resin or polyphenylene oxide resin on its surface with a metal, which comprises treating the surface of said shaped article with a compound of the formula RO (AO)n R'' wherein one of R and R'' is an alkyl or acyl group with not more than 4 carbon atoms and the remaining one of said R and R'' is hydrogen or an alkyl or acyl group with not more than 4 carbon atoms, A is a straight or branched chain C2 to C4-alkylene group and n is an integer of 1 to 2, as such or in aqueous solution at a concentration of not less than 70 percent by volume at a temperature of from 20*C to the boiling point of the treating liquid used; then, after rinsing, treating the above treated surface with a chemical etchant selected from the group consisting of chromic acid-sulfuric acid, chromic acid-nitric acid and chromic acid-phosphoric acid, at a temperature of from ambieNt temperature up to 100*C. for a sufficient time to roughen said surface; and subsequently applying thereto a metal coating.
Claim 11
Dependent Claim
38 words
A process according to claim 8 wherein said treatment with a compound of the formula RO(AO)nR'', wherein R, R'', A and n are as defined in claim 8, is carried out at a temperature from 20*C to 80*C.
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |