Process for depolymerization of polyacrylonitrile using hot...

Details Process for depolymerization of polyacrylonitrile using hot... Process for depolymerization of polyacrylonitrile using hot...

C - Chemistry, Metallurgy

08

J

C08J 11/14 (2006.01) C08F 8/50 (2006.01)

Patent

CA 2084848

- 5 - ABSTRACT OF THE DISCLOSURE The present invention relates to a process for depolymeriz- ing polyacrylonitrile into water soluble by-products, including ammonia and lower molecular weight carbonaceous materials by contact- ing the starting materials, polyacrylonitrile, and neutral, hot liquid water at a temperature from about 200°C up to the critical temperature of water at autogenous pressure. The present invention has utility as a means for degrading polyacrylonitrile without producing toxic hydrogen cyanide as a by-product.

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