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US5385776A
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Nanocomposites of gamma phase polymers containing inorganic particulate material
Assignee: Honeywell International Inc
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Filing: 1992-11-16
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Granted: 1995-01-31
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Expires: 2012-11-16
Abstract
Abstract This invention is directed to a composite formed from a gamma phase polyamide such as nylon 6 having dispersed therein a particulate material such as a phyllosilicate as for example montmorillonite.
Inventors
- 👤 MacRae Maxfield
- 👤 Brian R. Christiani
- 👤 Sanjeeva N. Murthy
- 👤 Harold Tuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:40
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/25; Y10T428/259; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2929; Y10T428/2931; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31765
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
110 words
A composite material comprising a polymer matrix comprising a gamma phase polyamide, wherein at least about 10 weight percent of said polyamide based on the total weight of said polyamide is in the gamma phase, having dispersed therein from greater than zero to less than 0.05% by wgt. of the matrix of an inorganic particulate material selected from the group consisting of layered materials having a thickness equal to or less than about 200 Å and fibrillar silicates having a diameter equal to or less than about 100 Å wherein distances between layers of said layered materials or between fibrils of said fibrillar silicates are at least about 15 Å.
Claim 2
Dependent Claim
110 words
A composite material comprising a polymer matrix comprising a gamma phase polyamide, wherein at least about 10 weight percent of said polyamide based on the total weight of said polyamide is in the gamma phase, having dispersed therein from greater than zero to less than 0.05% by wgt. of the matrix of an inorganic particulate material selected from the group consisting of layered materials having a thickness equal to or less than about 200 Å and fibrillar silicates having a diameter equal to or less than about 100 Å wherein distances between layers of said layered materials or between fibrils of said fibrillar silicates are at least about 15 Å.
Claim 3
Dependent Claim
31 words
A composite according to claim 1 wherein the amount of dispersed inorganic particulate material is equal to or greater than about 10 ppm based on the weight of the polymer matrix.
Claim 4
Dependent Claim
26 words
A composite according to claim 2 wherein said amount is equal to or greater than about 20 ppm based on the weight of the polymer matrix.
Claim 5
Dependent Claim
26 words
A composite according to claim 3 wherein said amount is equal to or greater than about 100 ppm based on the weight of the polymer matrix.
Claim 6
Dependent Claim
16 words
A composite according to claim 1 wherein said dispersed inorganic particulate material is a layered material.
Claim 7
Dependent Claim
13 words
A composite according to claim 5 wherein said layered material is a phyllosilicate.
Claim 8
Dependent Claim
24 words
A composite according to claim 6 wherein said polymer matrix is polyamides formed by the polymerization of an amino acid or a derivative thereof.
Claim 9
Dependent Claim
15 words
A composite according to claim 7 wherein said polyamide is nylon 6 or nylon 12.
Claim 10
Dependent Claim
12 words
A composite according to claim 8 wherein said polyamide is nylon 6.
Claim 11
Dependent Claim
47 words
A composite according to claim 9 wherein said layered material have an average thickness equal to or less than about 20 Å with a maximum thickness of 60 Å and an average diameter from about 100 to about 5,000 Å with a maximum diameter of 10,000 Å.
Claim 12
Dependent Claim
37 words
A composite according to claim 10 wherein said average thickness is equal to or less than about 15 Å and average diameter is from about 200 to about 2000 Å, with a maximum diameter of 5,000 Å.
Claim 13
Dependent Claim
44 words
A composite according to claim 11 wherein said average thickness is from about 5 to about 15 Å with a maximum thickness of 25 Å and the average diameter is from about 200 to about 2000 Å, with a maximum diameter of 5,000 Å.
Claim 14
Dependent Claim
18 words
A composite according to claim 12 wherein said distance is equal to or greater than about 20 Å.
Claim 15
Dependent Claim
18 words
A composite according to claim 13 wherein said distance is equal to or greater than about 30 Å.
Claim 16
Dependent Claim
15 words
A composite according to claim 1 wherein said inorganic particulate material is a fibrillar silicate.
Claim 17
Dependent Claim
12 words
A composite according to claim 15 wherein said fibrillar silicate is imogolite.
Claim 18
Dependent Claim
18 words
A composite according to claim 15 wherein said distance is equal to or greater than about 20 Å.
Claim 19
Dependent Claim
18 words
A composite according to claim 17 wherein said distance is equal to or greater than about 30 Å.
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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) | 1998-01-30 | 1998-08-01 | 1999-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-30 | 2002-08-01 | 2003-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-30 | 2006-08-01 | 2007-01-31 | $7700.00 | Window Closed / Lapsed |