Recycling cellulose esters from the waste from cigarette manufac

Details Recycling cellulose esters from the waste from cigarette manufac Recycling cellulose esters from the waste from cigarette manufac

1992-10-27

1994-07-12

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

521 48, 536 69, 536 76, 536127, C08J 1102, C08J 1104, C08J 1106, C08J 1108

Patent

active

053289340

ABSTRACT:
A process for recycling waste from the manufacture filtered cigarettes is disclosed herein. The process comprises the following steps: A waste stream from the manufacture of filtered cigarettes is provided. The waste stream includes tobacco, cellulose ester polymer, and paper. A substantial portion of the cellulose ester polymer is separated from this waste stream. This cellulose ester polymer is contacted with a sufficient volumne of fluid to extract contaminants therefrom. The fluid is under pressure and temperature conditions, such that the fluid is a supercritical or a near supercritical fluid.

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