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US4367306A
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Polyolefin composition
Assignee: Resonac Holdings Corp
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Filing: 1982-03-25
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Granted: 1983-01-04
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Expires: 2002-03-25
Abstract
Abstract A polyolefin composition is described, comprising: (A) a polyolefin which is modified with an unsaturated carboxylic acid or its derivative, or a mixture of such a modified polyolefin and a polyolefin, (B) aluminum or aluminum alloy in a powdery, fibrous and/or flaky form, (C) electrically conductive carbon black, (D) a halogen-containing organic compound and antimony oxide, and (E) a hydrous inorganic substance. This polyolefin composition has good electromagnetic wave-shielding properties and flame resistance, and therefore, it can be used as a housing material for electronic equipment.
Inventors
- 👤 Masahiko Maeda
- 👤 Naotochi Watanabe
- 👤 Kenji Fujitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:55
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0083; C; C08; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/02; C08K3/08; H01; H01B; H01B1/00; H01B1/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
134 words
A polyolefin composition comprising: (A) 90 to 40% by volume of a polyolefin which is modified with an unsaturated carboxylic acid and/or its derivative, wherein the unsaturated carboxylic acid and/or its derivative content of Component (A) is from 0.01 to 1.0% by weight; (B) 5 to 50% by volume of aluminum or an aluminum alloy; (C) 5 to 50% by volume of electrically conductive carbon black, the proportions of Components (A), (B), and (C) being based on the total volume of Components (A), (B) and (C); (D) 5 to 30 parts by weight, per 100 parts by weight of Components (A), (B) and (C), of a halogen-containing organic compound and antimony oxide; and (E) at least 5 parts by weight, per 100 parts by weight of the carbon black, of a hydrous inorganic substance.
Claim 2
Dependent Claim
134 words
A polyolefin composition comprising: (A) 90 to 40% by volume of a polyolefin which is modified with an unsaturated carboxylic acid and/or its derivative, wherein the unsaturated carboxylic acid and/or its derivative content of Component (A) is from 0.01 to 1.0% by weight; (B) 5 to 50% by volume of aluminum or an aluminum alloy; (C) 5 to 50% by volume of electrically conductive carbon black, the proportions of Components (A), (B), and (C) being based on the total volume of Components (A), (B) and (C); (D) 5 to 30 parts by weight, per 100 parts by weight of Components (A), (B) and (C), of a halogen-containing organic compound and antimony oxide; and (E) at least 5 parts by weight, per 100 parts by weight of the carbon black, of a hydrous inorganic substance.
Claim 3
Dependent Claim
137 words
A polyolefin composition comprising: (A) 90 to 40% by volume of a mixture of a polyolefin and a polyolefin modified with an unsaturated carboxylic acid and/or its derivative, wherein the unsaturated carboxylic acid and/or its derivative content of Component (A) is from 0.01 to 1.0% by weight; (B) 5 to 50% by volume of an aluminum or aluminum alloy; (C) 5 to 50% by volume of electrically conductive carbon, the proportions of Components (A), (B) and (C) being based on the total volume of Components (A), (B) and (C); (D) 5 to 30 parts by weight per 100 parts by weight of Components (A), (B) and (C), of a halogen-containing organic compound and antimony oxide; and (E) at least 5 parts by weight, per 100 parts by weight of the carbon black, of a hydrous inorganic substance.
Claim 4
Dependent Claim
137 words
A polyolefin composition comprising: (A) 90 to 40% by volume of a mixture of a polyolefin and a polyolefin modified with an unsaturated carboxylic acid and/or its derivative, wherein the unsaturated carboxylic acid and/or its derivative content of Component (A) is from 0.01 to 1.0% by weight; (B) 5 to 50% by volume of an aluminum or aluminum alloy; (C) 5 to 50% by volume of electrically conductive carbon, the proportions of Components (A), (B) and (C) being based on the total volume of Components (A), (B) and (C); (D) 5 to 30 parts by weight per 100 parts by weight of Components (A), (B) and (C), of a halogen-containing organic compound and antimony oxide; and (E) at least 5 parts by weight, per 100 parts by weight of the carbon black, of a hydrous inorganic substance.
Claim 5
Dependent Claim
28 words
A polyolefin composition as claimed in claim 1 or 2, wherein the aluminum or aluminum alloy is in a powdery form, a fibrous form, or a flaky form.
Claim 6
Dependent Claim
28 words
A polyolefin composition as claimed in claim 1, wherein the unsaturated carboxylic acid or its derivative is selected from the group consisting of maleic acid and maleic anhydride.
Claim 7
Dependent Claim
22 words
A polyolefin composition as claimed in claim 1 or 2, wherein the polyolefin has a molecular weight of from 20,000 to 1,000,000.
Claim 8
Dependent Claim
20 words
A polyolefin composition as claimed in claim 5, wherein the polyolefin has a molecular weight of from 20,000 to 500,000.
Claim 9
Dependent Claim
20 words
A polyolefin composition as claimed in claim 6, wherein the polyolefin has a molecular weight of from 50,000 to 300,000.
Claim 10
Dependent Claim
37 words
A polyolefin composition as claimed in claim 1 or 2, wherein the total proportion of Components (B) and (C) ranges from 10 to 60% by volume based on the total volume of Components (A), (B) and (C).
Claim 11
Dependent Claim
24 words
A polyolefin composition as claimed in claim 8, wherein the total proportion of Components (B) and (C) ranges from 25 to 50% by volume.
Claim 12
Dependent Claim
24 words
A polyolefin composition as claimed in claim 1 or 2, wherein the volume ratio of Components (B) to (C) ranges from 2.5/1 to 1/2.5.
Claim 13
Dependent Claim
24 words
A polyolefin composition as claimed in claim 1 or 2, wherein the proportion of Component (E) ranges from 7 to 20 parts by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |