Patent US4480005A successfully refreshed from Google Patents.
US4480005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin layer thermoplastic polymer bonded covalently at its surface to a mineral component
Assignee: Shell USA Inc
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Filing: 1983-09-06
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Granted: 1984-10-30
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Expires: 2003-09-06
Abstract
Abstract A polymer reinforcing material, consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free organic molecules chemically bonded to its surface by covalent bonding, when used in relatively small amounts in the range from 1 to 20 phr is capable of providing superior retention or increase of desirable polymer properties especially impact resistance, compared to the use of conventional reinforcement in the same polymer, while providing increased stiffness and retention of strength at elevated temperatures. The reinforcing material is prepared by contacting a particulate or filamentary mineral component which has reactive sites at its surface with certain organic compounds at reaction conditions at which a covalent chemical bond is established between the mineral surface and the organic compound by reaction of a reactive surface site of the mineral with a site-reactive atom or group of the organic compound.
Inventors
- 👤 Thomas F. Brownscombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/261; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31931; Y10T428/31938
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
38 words
A polymer reinforcing material consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to its surface by covalent bonding.
Claim 2
Dependent Claim
38 words
A polymer reinforcing material consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to its surface by covalent bonding.
Claim 3
Dependent Claim
87 words
A polymer reinforcing material consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to the surface by covalent M--O--C-- or M--C-- bonds, wherein M represents silicon, aluminum or other metals of groups 2 to 8 of the Periodic Table; M and O are components of the surface layer of said mineral material; and C is a component of said thermoplastic polymers, connected to at least one polymer-interactive group.
Claim 4
Dependent Claim
87 words
A polymer reinforcing material consisting of a particulate or filamentary mineral component having a thin polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to the surface by covalent M--O--C-- or M--C-- bonds, wherein M represents silicon, aluminum or other metals of groups 2 to 8 of the Periodic Table; M and O are components of the surface layer of said mineral material; and C is a component of said thermoplastic polymers, connected to at least one polymer-interactive group.
Claim 5
Dependent Claim
61 words
A polymer reinforcing material consisting of a particulate or filamentary layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers containing at least one olefinic double bond per molecule chemically bonded to its surface by covalent bonding resulting from reaction between surface oxygen or hydroxyl groups of the mineral component and double bonds of said thermoplastic polymers.
Claim 6
Dependent Claim
61 words
A polymer reinforcing material consisting of a particulate or filamentary layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers containing at least one olefinic double bond per molecule chemically bonded to its surface by covalent bonding resulting from reaction between surface oxygen or hydroxyl groups of the mineral component and double bonds of said thermoplastic polymers.
Claim 7
Dependent Claim
65 words
A polymer reinforcing material consisting of a particulate or filamentary siliceous mineral component having a thin, polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to its surface by co-valent --Si--O--C-- or --Si--C-- bonds wherein Si and O are components of the surface layer of said mineral material and C is a component of said thermoplastic polymers.
Claim 8
Dependent Claim
65 words
A polymer reinforcing material consisting of a particulate or filamentary siliceous mineral component having a thin, polymer-interactive layer, averaging about 5-500 Angstrom in thickness, of silicon-free and heavy metal-free thermoplastic polymers chemically bonded to its surface by co-valent --Si--O--C-- or --Si--C-- bonds wherein Si and O are components of the surface layer of said mineral material and C is a component of said thermoplastic polymers.
Claim 9
Dependent Claim
42 words
Composition according to claims 1, 2, 3 or 4 wherein said thermoplastic polymers are block copolymers having at least one block A and one block B wherein block A is polystyrene and block B is polybutadiene, polyisoprene or hydrogenated polybutadiene or polyisoprene.
Claim 10
Dependent Claim
24 words
Composition according to claims 1, 2, 3 or 4 wherein said mineral component is glass, mica, asbestos, talc, clay, silica gel, alumino-silicate or alumina.
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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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |