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US6610781: Reinforced networked polymer/clay alloy composite
57 Claims, 13 Drawings
A reinforced networked polymer/clay alloy composite is produced by contacting a monomer/clay mixture with a reinforcing agent. The monomer/clay mixture comprises a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture, while the cross-linking agent concurrently acts to network oligomeric and polymeric species formed during polymerization to produce a networked polymer/clay alloy in the presence of the reinforcing agent. The networked polymer/clay alloy is intimately integrated with the reinforcing agent such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the composite.
- 1. A process for producing a reinforced networked polymer/clay alloy composite, comprising the steps of:
(a) preparing a monomer/clay mixture by mixing at least a monomer, clay particles, a cross-linking agent, and a mixing fluid in a vessel;
(b) contacting the monomer/clay mixture and a reinforcing agent;
(c) exposing the monomer/clay mixture to a polymerization initiator means; and
(d) polymerizing the monomer/clay mixture in the presence of the reinforcing agent so that a reinforced networked polymer/clay alloy composite is formed.
- 22. A product produced by the process according to any one of the preceding claims.
U.S. Patent Documents
Foreign Patent Documents
* cited by examiner
|Blumstein, A. “Polymerization of Adsorbed Monolayers I. Preparation of the Clay-Polymer Complex”|
|Blumstein, R. et al. “Polymerization of Monomolecular Layers adsorbed on Montmorillonite: Cyclization in Polyacrylonitrile and Polymethacrylonitrile”|
|Daniel, David E. “Geosynthetic Clay Liners, Part Two: Hydraulic Properties”|
|Kato, C. et al. “Preparation and Electrical Properties of Quaternary Ammonium Montmorillonite-Polystyrene Complexes”|
|Koerner, Robert M.|
|Nagae, H. et al. “Adsorption and Polymerisation of Acrylamide in Na-Montmorillonite and Na-Fluor-Tetrasilicic Mica”|
|Ogawa, M. et al. “Preparation of Montmorillonite-Polyacrylamide Interaction Compounds and the Water Absorbing Property”|
|Pramanik, P. “Nano Composites of Clay and Polymer”|
|Srikhirin, T. et al. “Polydiacetylene-Inorganic Clay Nanocomposites”|
|Well, Larry W. “Building a Better Barrier”|
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