Embedded material of polyurethane

Details Embedded material of polyurethane Embedded material of polyurethane

C - Chemistry, Metallurgy

08

G

183/1, 18/12, 40

C08G 18/67 (2006.01) B01D 63/02 (2006.01) C08G 18/32 (2006.01) C08G 18/36 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1146691

Abstract A process for the preparation of a polyurethane which comprises reacting an excess of an aromatic diisocyanate with a mixture of castor oil and trimethylol propane to obtain an NCO group-containing pre-adduct and cross-linking the pre-adduct using a castor oil or a mixture of castor oil and trimethylol propane. The present invention further relates to a polyurethane obtainable by such a process. An embedding process which comprises embedding a material to be embedded in such a polyurethane and hardening the polyurethane is also disclosed as is a material when embedded by such a process or an apparatus comprising such a material.

324073

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