Patent US4789403A successfully refreshed from Google Patents.
US4789403A
Expired / Lapsed
US
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Surface modified layered lattice silicate pigments
Assignee: ECC America Inc
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Filing: 1986-12-17
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Granted: 1988-12-06
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Expires: 2006-12-17
Abstract
Abstract A method of producing a layered lattice silicate which is surface modified with an organic material wherein said silicate in substantially dry, particulate form is contacted with an organic monomer, co-monomers or a prepolymer, and surface polymerization or reaction in situ on the silicate in the presence of a gaseous hydrogen atmosphere is effected.
Inventors
- 👤 Camilla A. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:19
CPC Classifications
C; C08; C08F; C08F292/00; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/04; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C09C3/00; C09C3/08; C01; C01P; C01P2002/00; C01P2002/80; C01P2002/82; C01P2004/00; 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
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
A method of producing a layered lattice silicate which is surface modified with an organic material, wherein the silicate in substantially dry, particulate form is contacted with an organic monomer, co-monomers, or a prepolymer, in the presence of gaseous hydrogen.
Claim 2
Independent Claim
40 words
A method of producing a layered lattice silicate which is surface modified with an organic material, wherein the silicate in substantially dry, particulate form is contacted with an organic monomer, co-monomers, or a prepolymer, in the presence of gaseous hydrogen.
Claim 3
Dependent Claim
16 words
A method in accordance with claim 1, in which said layered lattice silicate is a kaolin.
Claim 4
Dependent Claim
16 words
A method in accordance with claim 1, in which said layered lattice silicate is a mica.
Claim 5
Dependent Claim
16 words
A method in accordance with claim 1, in which said layered lattice silicate is a talc.
Claim 6
Dependent Claim
16 words
A method in accordance with claim 1, in which said layered lattice silicate is a bentonite.
Claim 7
Dependent Claim
15 words
A method in accordance with claim 1, in which a prepolymer of acrylonitrile/butadiene/styrene is used.
Claim 8
Dependent Claim
24 words
A method in accordance with claim 1 in which a monomer selected from the group consisting of 6-amino caproic acid and E-caprolactam is used.
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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) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |