06225394 is referenced by 59 patents and cites 105 patents.

Nanocomposite layered materials prepared by co-intercalation of an onium ion, preferably an alkoxylated onium ion and an ethylene vinyl alcohol oligomer or polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The spacing of adjacent layers of the layered materials is expanded at least about 3 Å, preferably at least about 5 Å, usually preferably to a d-spacing of about 15-20 Å, e.g., 18 Å with the alkoxylated onium ion spacing/coupling agent. The intercalation of the ethylene vinyl alcohol polymer then increases the spacing of adjacent layers an additional at least 2 Å, e.g., to at least about 20 Å, preferably about 25 Å to about 30 Å, generally about 28 Å. Improved O

2

barrier properties are observed over a broad range of humidity conditions when intercalation is accomplished by both the solvent route and the direct compounding route. The intercalated and exfoliated layered materials are useful for barrier layers in multi-layer packaging and for coatings.

Title
Intercalates formed by co-intercalation of onium ion spacing/coupling agents and monomer, oligomer or polymer ethylene vinyl alcohol (EVOH) intercalants and nanocomposites prepared with the intercalates
Application Number
9/323629
Publication Number
6225394 (B1)
Application Date
June 1, 1999
Publication Date
May 1, 2001
Inventor
Vasiliki Psihogios
Wheeling
IL, US
Anthony S Tomlin
Island Lake
IL, US
Tie Lan
Lake Zurich
IL, US
Agent
Marshall O&apos Toole Gerstein Murray & Borun
US
Assignee
AMCOL International Corporation
IL, US
IPC
C08K 3/00
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