US4798766A
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US
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Surface modified clays and process of manufacture
Assignee: ECC America Inc
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Filing: 1987-08-26
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Granted: 1989-01-17
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Expires: 2007-08-26
Abstract
Abstract A method is described in which a layered lattice silicate is surface modified with an organic material by reacting said layered lattice silicate in particulate form with a reactant system comprising gaseous NH 3 at temperatures below about 1000° C. and contacting the aminated silicate in particulate form with an organic compound selected from the group of monomers, co-monomers, prepolymers and compounds condensable with the amine group, such as a nylon precursor, in the presence of gaseous hydrogen. The surface modified silicates are useful as fillers in a filled polymer system comprising a matrix polymer and a filler.
Inventors
- 👤 Camilla A. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:16
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C08; C08F; C08F292/00; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/02; C08K9/04; C09C1/00; C09C1/40; C09C1/42; C01; C01P; C01P2002/00; C01P2002/20; C01P2002/22; C01P2002/80; C01P2002/82; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/12; C01P2006/80; C01P2006/90; C03; C03C; C03C2218/00; C03C2218/30; C03C2218/31; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998; Y10T428/31
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
84 words
A particulate 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 surfaces of which have been modified by surface bound NH 2 groups and further reacted with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers which are condensible with the amine group.
Claim 2
Dependent Claim
84 words
A particulate 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 surfaces of which have been modified by surface bound NH 2 groups and further reacted with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers which are condensible with the amine group.
Claim 3
Dependent Claim
14 words
The composition of claim 1, in which said layered lattice silicate is a kaolin.
Claim 4
Dependent Claim
14 words
The composition of claim 1, in which said layered lattice silicate is a mica.
Claim 5
Dependent Claim
14 words
The composition of claim 1, in which said layered lattice silicate is a talc.
Claim 6
Dependent Claim
14 words
The composition of claim 1, in which said layered lattice silicate is a bentonite.
Claim 7
Dependent Claim
26 words
The composition of claim 1 in which the organic compound is selected from the class consisting of amino acids, dicarboxylic acids, monofunctional acids and difunctional acids.
Claim 8
Dependent Claim
14 words
The composition of claim 1, in which the organic compound is a nylon precursor.
Claim 9
Dependent Claim
27 words
The composition of claim 1, in which the organic compound is selected from the class consisting of 6-amino caproic acid, E-caprolactam, adipic acid and 11-amino undecanoic acid.
Claim 10
Independent Claim
126 words
A method of producing a layered lattice silicate which is surface modified with an organic material, which comprises reacting a 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, in particulate form with a reaction system comprising gaseous NH 3 at temperatures below about 1,000° C. to form bound NH 2 groups at said surface, and reacting the aminated silicate in particulate form in the presence of gaseous hydrogen with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers, which are condensible with the amine group.
Claim 11
Independent Claim
126 words
A method of producing a layered lattice silicate which is surface modified with an organic material, which comprises reacting a 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, in particulate form with a reaction system comprising gaseous NH 3 at temperatures below about 1,000° C. to form bound NH 2 groups at said surface, and reacting the aminated silicate in particulate form in the presence of gaseous hydrogen with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers, which are condensible with the amine group.
Claim 12
Dependent Claim
15 words
A method according to claim 9, in which said layered lattice silicate is a kaolin.
Claim 13
Dependent Claim
15 words
A method according to claim 9, in which said layered lattice silicate is a mica.
Claim 14
Dependent Claim
15 words
A method according to claim 9, in which said layered lattice silicate is a talc.
Claim 15
Dependent Claim
15 words
A method according to claim 9, in which said layered lattice silicate is a bentonite.
Claim 16
Dependent Claim
27 words
A method according to claim 9 in which the organic compound is selected from the class consisting of amino acids, dicarboxylic acids, monofunctional acids and difunctional acids.
Claim 17
Dependent Claim
15 words
A method according to claim 9 in which the organic compound is a nylon precursor.
Claim 18
Dependent Claim
28 words
A method according to claim 9 in which the organic compound is selected from the class consisting of 6-amino caproic acid, E-caprolactam, adipic acid and 11-amino undecanoic acid.
Claim 19
Dependent Claim
53 words
A method according to claim 9, wherein the amination reaction is carried out at temperatures in the range of from about 150° C. to 1000° C. and the further treatment in the presence of gaseous hydrogen is carried out at temperatures in the range of about 125° C. to less than 350° C.
Claim 20
Dependent Claim
52 words
A method according to claim 9, wherein the amination reaction is carried out at temperatures in the range of from about 700° C. to 900° C. and the further treatment in the presence of gaseous hydrogen is carried out at temperatures in the range of about 125° C. to about 250° C.
Claim 21
Dependent Claim
99 words
A filled resin system comprising a resin matrix and a filler, said filler comprising particles of a 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 surfaces of which have been modified by surface bound NH 2 groups and further reacted with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers which are condensible with the amine group.
Claim 22
Dependent Claim
99 words
A filled resin system comprising a resin matrix and a filler, said filler comprising particles of a 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 surfaces of which have been modified by surface bound NH 2 groups and further reacted with an organic compound selected from the class consisting of monomers, co-monomers, and prepolymers which are condensible with the amine group.
Claim 23
Dependent Claim
27 words
The composition according to claim 19 in which the organic compound is selected from the class consisting of amino acids, dicarboxylic acids, monofunctional acids and difunctional acids.
Claim 24
Dependent Claim
15 words
A composition according to claim 19 in which the organic compound is a nylon precursor.
Claim 25
Dependent Claim
28 words
A composition according to claim 19 in which the organic compound is selected from the class consisting of 6-amino caproic acid, E-caprolactam, adipic acid and 11-amino undecanoic acid.
Claim 26
Dependent Claim
21 words
A composition according to claim 19, in which the matrix resin is compatible with nylon polymers, urethane polymers or polyester polymers.
Claim 27
Dependent Claim
15 words
A composition according to claim 19, in which the layered lattice silicate is a kaolin.
Claim 28
Dependent Claim
15 words
A composition according to claim 19, in which the layered lattice silicate is a mica.
Claim 29
Dependent Claim
15 words
A composition according to claim 19, in which the layered lattice silicate is a talc.
Claim 30
Dependent Claim
15 words
A composition according to claim 19, in which the layered lattice silicate is a bentonite.
References Cited (Backward Citations)
US3773708A
Cited
US4472538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |