US4690868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for surface treating clay minerals and resultant products
Assignee: ECC America Inc
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Filing: 1986-11-20
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Granted: 1987-09-01
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Expires: 2006-11-20
Abstract
Abstract Directly aminating the surface of a 2-dimensional layered lattice silicate comprising reacting the lattice silicate in particulate form with gaseous NH 3 at temperatures below 100° C. to form bound NH 2 groups at the surface, the resulting modified 2-dimensional layered lattice silicate and a filled resin system employing the thusly modified silicate.
Inventors
- 👤 Camilla A. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/02; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C01; C01P; C01P2002/00; C01P2002/20; C01P2002/22; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/12; C01P2006/80; C01P2006/90; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
61 words
A 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8, n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions; the surface of which has been modified by surface bound NH 2 groups.
Claim 2
Dependent Claim
61 words
A 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8, n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions; the surface of which has been modified by surface bound NH 2 groups.
Claim 3
Dependent Claim
14 words
A product in accordance with claim 1, wherein said material is a kaolin clay.
Claim 4
Dependent Claim
73 words
A filled resin system, comprising a resin matrix, and as a filler, a 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8; n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions, the surface of which has been modified by surface bound NH 2 groups.
Claim 5
Dependent Claim
73 words
A filled resin system, comprising a resin matrix, and as a filler, a 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8; n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions, the surface of which has been modified by surface bound NH 2 groups.
Claim 6
Independent Claim
88 words
A method for directly aminating the surface of a 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8; n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions, comprising: reacting said layered lattice silicate in particulate form with a reactant system comprising gaseous NH 3 at temperatures below about 1000° C. to form bound NH 2 groups at said surface.
Claim 7
Independent Claim
88 words
A method for directly aminating the surface of a 2-dimensional layered lattice silicate having the general formula E i M x Si y O n (OH) m , where M is Al, Mg, or Fe; x=2 to 6; y=2 to 8; n=2 to 20; m=0 to 8; and E i is one or more exchangeable ions, comprising: reacting said layered lattice silicate in particulate form with a reactant system comprising gaseous NH 3 at temperatures below about 1000° C. to form bound NH 2 groups at said surface.
Claim 8
Dependent Claim
25 words
A method in accordance with claim 4, wherein said reaction is conducted at temperatures in the range of from about 150° C. to 1000° C.
Claim 9
Dependent Claim
25 words
A method in accordance with claim 4, wherein said reaction is conducted at temperatures in the range of from about 700° C. to 900° C.
Claim 10
Independent Claim
23 words
A method in accordance with any of claims 4, 5 or 6, wherein said layered lattice silicate is a clay or clay mineral.
Claim 11
Independent Claim
19 words
A method in accordance with any of claims 4, 5 or 6, wherein said silicate is a kaolin clay.
Claim 12
Independent Claim
25 words
A method in accordance with any of claims 4, 5 or 6, wherein said reaction is conducted in apparatus for contacting particulate solids with gases.
Claim 13
Dependent Claim
16 words
A method in accordance with claim 5, wherein said reaction is conducted in a rotary furnace.
Claim 14
Dependent Claim
18 words
A method in accordance with claim 5, wherein said reaction is conducted in a fluidized bed reactor system.
Claim 15
Independent Claim
36 words
A method for increasing the mechanical strength and adhesion properties of a filled resin system, comprising utilizing as said filler a kaolin clay, the surface of which has been modified by surface bound NH 2 groups.
Claim 16
Independent Claim
36 words
A method for increasing the mechanical strength and adhesion properties of a filled resin system, comprising utilizing as said filler a kaolin clay, the surface of which has been modified by surface bound NH 2 groups.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |