Title:
NANOCOMPOSITE OF POLYMERIC MATERIALS WITH SURFACE MODIFIED CLAY AND SILICA XEROGEL
Document Type and Number:
WIPO Patent Application WO2000064969
Kind Code:
A9
Abstract:
A grafted silica or other metal oxide xerogel is interpenetrated or impregnated by a polymer and sandwiched between layered clay plate molecules. The grafted segments on the backbone of the xerogel provide phase compatibilization between the polymer and layered clay plate molecules. The grafted xerogel is produced by a gel precursor with a coupling reactant, under specified conditions, to cause the coupling reactant to condense and react with functional, e.g., hydroxyl (from silanol) groups on the gel precursor to form grafted sol. The grafted sol is mixed under stirring with clay to exfoliate the clay plate molecules. The exfoliated clay molecules may be mixed with oligomers or blended with a polymer to form the grafted xerogel as shown in Figure 1.
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Inventors:
YANG ARTHUR JING-MIN (US)
ZHANG YUEHUA (US)
ZHANG YUEHUA (US)
Application Number:
PCT/US2000/010711
Publication Date:
February 21, 2002
Filing Date:
April 21, 2000
Export Citation:
Assignee:
IND SCIENCE & TECHNOLOGY NETWO (US)
YANG ARTHUR JING MIN (US)
ZHANG YUEHUA (US)
YANG ARTHUR JING MIN (US)
ZHANG YUEHUA (US)
International Classes:
C08F283/12; C08F289/00; C08G18/48; C08K9/08; C08L51/10; (IPC1-7): C08K3/22; C08K3/34
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