Patent ID: 6184373
Filing Date: 2001-02-06
Classification: C08B,D01D,D01F

Abstract:
A method for producing an organic cellulose derivative fibrillated fiber comprising;a. mixing a cellulose ester containing stream and a coagulant stream in a first zone of relatively moderate turbulence to produce a slurry containing cellulose ester fibers, wherein said first zone of moderate turbulence is produced by a centrifugal pump;b. passing said slurry containing cellulose ester fibers to a second zone having relatively low turbulence for a sufficient time to increase the hardness of said cellulose ester fiber; andc. passing said cellulose derivative fibers through a third zone having relatively high shear to produce a fibrillated fiber having a degree of fibrillation greater than about 6.