US4278510A
Expired / Lapsed
US
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Platable propylene polymer compositions
Assignee: BP Corp North America Inc
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Filing: 1980-03-31
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Granted: 1981-07-14
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Expires: 2000-03-31
Abstract
Abstract Propylene polymer compositions that are easily plated with metals to provide strongly adherent coatings are provided. Typically, such compositions consist essentially of: a. 100 parts by weight of a propylene polymer, b. 20-150 parts by weight of an electrically conductive carbon black, c. 0.2-2.5 parts by weight of sulfur and d. 0.5-10 parts by weight of a maleic anhydride-modified propylene polymer.
Inventors
- 👤 James C. W. Chien
- 👤 Steven K. Evnochides
- 👤 Joseph A. Howlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:14
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; C08K3/04; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/18; C08L23/20; C25; C25D; C25D5/00; C25D5/54; C25D5/56; C08L51/00; C08L51/06; Y; Y10; Y10S; Y10S205/00; Y10S205/924; Y10S205/925; Y10S205/927
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
A propylene polymer composition having the characteristic of being readily electroplatable with a metal such as nickel to provide a strongly adherent metal coating; said composition consisting essentially of about 100 parts by weight of a propylene polymer, a quantity of electrically conductive carbon black sufficient to reduce the electrical resistivity of the composition to less than about 1,000 ohm-centimeters, a minor amount of sulfur, of a sulfur donor, sufficient to increase the rate of metal deposition on the polymer, and a minor amount of maleic anhydride-modified propylene polymer sufficient to improve the adhesion of the plated metal to the polymer; said maleic anhydride-modified propylene polymer containing about 0.1 to 5 weight % chemically combined maleic anhydride and having been prepared by heating a propylene polymer and maleic anhydride in an inert solvent in the presence of a free radical generating polymerization initiator; said sulfur donor being selected from the group consisting of sulfur chloride, 2-mercapto-benzoithiazole, N-cyclohexyl-2-benzothiozole sulfonomide, dibutyl xanthogen disulfide, and dipentamethylene-thiuram hexasulfide.
Claim 2
Dependent Claim
164 words
A propylene polymer composition having the characteristic of being readily electroplatable with a metal such as nickel to provide a strongly adherent metal coating; said composition consisting essentially of about 100 parts by weight of a propylene polymer, a quantity of electrically conductive carbon black sufficient to reduce the electrical resistivity of the composition to less than about 1,000 ohm-centimeters, a minor amount of sulfur, of a sulfur donor, sufficient to increase the rate of metal deposition on the polymer, and a minor amount of maleic anhydride-modified propylene polymer sufficient to improve the adhesion of the plated metal to the polymer; said maleic anhydride-modified propylene polymer containing about 0.1 to 5 weight % chemically combined maleic anhydride and having been prepared by heating a propylene polymer and maleic anhydride in an inert solvent in the presence of a free radical generating polymerization initiator; said sulfur donor being selected from the group consisting of sulfur chloride, 2-mercapto-benzoithiazole, N-cyclohexyl-2-benzothiozole sulfonomide, dibutyl xanthogen disulfide, and dipentamethylene-thiuram hexasulfide.
Claim 3
Dependent Claim
50 words
A composition of claim 1 containing about: a. 100 parts by weight of said propylene polymer, b. 20-150 parts by weight of said electrically conductive carbon black, c. 0.2-5.0 parts by weight of said sulfur or sulfur donor, and d. 0.5-10 parts by weight of said maleic anhydride-modified propylene polymer.
Claim 4
Dependent Claim
50 words
A composition of claim 1 containing about: a. 100 parts by weight of said propylene polymer, b. 35-100 parts by weight of said electrically conductive carbon black, c. 0.5-3.0 parts by weight of said sulfur or sulfur donor, and d. 1.0-6.0 parts by weight of said maleic anhydride-modified propylene polymer.
Claim 5
Dependent Claim
24 words
A composition of claim 1, 2, or 3 in which said maleic anhydride-modified propylene polymer contains about 0.5-4.0 weight % chemically combined maleic anhydride.
Claim 6
Dependent Claim
24 words
A composition of claim 1, 2, or 3 in which said maleic anhydride-modified propylene polymer contains about 3.0-4.0 weight % chemically combined maleic anhydride.
Claim 7
Dependent Claim
69 words
In a process for depositing a metal from an electroplating bath onto an article fabricated from a propylene polymer composition in which the article to be plated is employed as the cathode in a metal plating bath and an electric current is applied across the plating bath; the improvement which consists essentially of employing as the propylene polymer composition the propylene polymer composition of claim 1, 2 or 3.
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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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |