METHOD FOR MAKING AN INFUSIBLE POLYMER FROM A POLYOLEFIN

摘要

A process for making an infusible polyolefin includes the steps of: a) contacting the polyolefin in a sulfonation reactor with a sulfonation mixture comprising sulfur trioxide to produce the infusible polyolefin; b) recovering from the sulfonation reactor a recovery stream having sulfur dioxide; c) oxidizing at least a portion of the recovered sulfur dioxide to produce a recycle stream; and d) combining at least a portion of the recycle stream with the sulfonation mixture of step (a).;Another aspect of the invention is for making a carbonized fiber from an infusible polyolefin of the present invention and further includes the step of carbonizing the infusible polyolefin to produce a carbon fiber.;Another aspect of the invention is an apparatus for preparing an infusible polyolefin. The apparatus includes a plurality of compartments in fluid communication wherein at least one compartment is adapted for contacting a polyolefin with sulfur trioxide.

主权项

1. A process for making an infusible polyolefin comprising the steps of:
a) contacting a polyolefin in a sulfonation reactor with a sulfonation mixture comprising sulfur trioxide to produce an infusible polyolefin; b) recovering from the sulfonation reactor a recovery stream comprising sulfur dioxide; c) oxidizing at least a portion of the sulfur dioxide in the recovery stream to produce an enriched recycle stream wherein the enriched recycle stream has an increased concentration of sulfur trioxide, relative to the recovery stream; and d) combining at least a portion of the enriched recycle stream with the sulfonation mixture of step (a).