US4386175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition
Assignee: Kokoku Rubber Industry Co Ltd
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Filing: 1980-02-01
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Granted: 1983-05-31
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Expires: 2000-02-01
Abstract
Abstract This invention relates to a resin composition characterized in that a conventional chemical etching treatment is removed and instead of it a surface of the resin composition is plated with a metallic layer having a strong adhesive force, by means of a surface treatment by only a dry etching. Accordingly, the surface thereof can be directly treated with electroplating. Further, the use of chromic acid as a source of environmental pollution or other conventional addition agents for the surface treatment is completely eliminated.
Inventors
- 👤 Hiroshi Kuramochi
- 👤 Noriaki Nakajo
- 👤 Makoto Abekura
- 👤 Jun Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:52
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/54; C25D5/56; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A resin composition, comprising a mixture of 100 parts by weight of a basic material containing from about 60 to about 90 parts by weight of a thermoplastic resin selected from the group consisting of polypropylene, polyethylene, polystyrene and acrylonitrile-butadiene-styrene and from about 10 to about 40 parts by weight of a rubber material selected from the group consisting of ethylene-propylene-diene terpolymer, nitrilebutediene rubber, styrenebutediene rubber, and polynorbornene rubber and from 15 to 40 parts by weight of a carbon black mixed with an effective amount of an addition agent containing at least one of a water-soluble organic material and a surface-active agent, said effective amount of an addition agent being capable of enhancing dry etching of a surface of said composition by a gas plasma contacting said surface, said dry etching being effective to permit adhesion of a plating on said surface.
Claim 2
Dependent Claim
143 words
A resin composition, comprising a mixture of 100 parts by weight of a basic material containing from about 60 to about 90 parts by weight of a thermoplastic resin selected from the group consisting of polypropylene, polyethylene, polystyrene and acrylonitrile-butadiene-styrene and from about 10 to about 40 parts by weight of a rubber material selected from the group consisting of ethylene-propylene-diene terpolymer, nitrilebutediene rubber, styrenebutediene rubber, and polynorbornene rubber and from 15 to 40 parts by weight of a carbon black mixed with an effective amount of an addition agent containing at least one of a water-soluble organic material and a surface-active agent, said effective amount of an addition agent being capable of enhancing dry etching of a surface of said composition by a gas plasma contacting said surface, said dry etching being effective to permit adhesion of a plating on said surface.
Claim 3
Dependent Claim
18 words
A resin composition as claimed in claim 1, wherein the plasma is effective for oxidation of said surface.
Claim 4
Dependent Claim
67 words
A resin composition as claimed in claim 1 or claim 2, wherein the water-soluble organic material is used in an amount of from 0.1 to 20 parts by weight and the surface-active agent is used in an amount of from 0.5-5 parts by weight, whereby the resin composition is provided with volume resistivity of no more than 10 1 ohm cm and is suitable for injection molding.
Claim 5
Dependent Claim
28 words
A resin composition as claimed in claim 1, wherein the carbon black is selected from the group consisting of a high-structured acetylene black and a conductive furnace black.
Claim 6
Dependent Claim
30 words
A resin composition as claimed in claim 3, wherein the water-soluble organic material is selected from one of the group consisting of a high polymeric substance and a low-molecular substance.
Claim 7
Dependent Claim
25 words
A resin composition as claimed in claim 5, wherein said high polymeric substance includes one of polyvinyl alcohol, polyethylene glycol, starch, polyacrylic acid and methylcellulose.
Claim 8
Dependent Claim
19 words
A resin composition as claimed in claim 5, wherein said low-molecular substance includes one of glycerin and diethylene glycol.
References Cited (Backward Citations)
US3562118A
Cited
US3563784A
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US3937683A
Cited
US4002595A
Cited
US3871929A
Cited
US4098734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |