Homogeneous, isotropic, three-dimensional cellular...

Details Homogeneous, isotropic, three-dimensional cellular... Homogeneous, isotropic, three-dimensional cellular...

C - Chemistry, Metallurgy

08

J

18/24

C08J 9/28 (2006.01)

Patent

CA 1120672

ABSTRACT OF THE DISCLOSURE A method of preparing a relatively homogeneous, iso- tropic, three-dimensional cellular microporous polymer struc- ture comprising heating a mixture of a polymer selected from the group consisting of olefinic polymers, condensation poly- mers, oxidation polymers, and blends thereof, and a compatible liquid to a temperature and for a time sufficient to form a homogeneous solution. At the same time a plurality of liquid droplets of substantially the same size are formed in a conti- nuous liquid polymer phase by cooling the solution, cooling is continued to solidify the polymer, and at least a substantial portion of the liquid is removed from the resulting solid to form the cellular polymer structure.

371871

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