Manufacturing process of cellulose viscose with low viscosity
AssigneeAcelon Chemicals and Fiber Corporation
InventorsMeng-Song Cheng, S. P. Chen, K. C. Lai
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Abstract
A manufacturing process of cellulose solution with low viscosity includes the step of dissolving a cellulose in a mixture solvent which is produced by mixing an additional solvent mixture, N-methylol caprolactom, with a main solvent, N-methyl morpholine oxide. The present invention not only can increase the swelling of the pulp during the dissolving process, but also can lower the viscosity of the cellulose solution that enables the manufacturing process to process at lower temperature and the cellulose solution produced to spin in higher spinning speed. Therefore, the physical property and the quality of the final fiber product are improved by eliminating the problem of cellulose polymerization decay.
Claims12
A manufacturing process of cellulose solution with low viscosity, comprising the steps of:
- (a) adding a predetermined amount of a cellulose and polymerization anti-decay additive into a mixing chamber;
- (b) fully mixing a main solvent, N-methyl morpholine oxide, with an additional solvent, N-methylolcaprolactam, in a predetermined weight proportion to produce a cellulose solvent;
- (c) evenly mixing a predetermined amount of said cellulose solvent, a predetermined amount of water, said cellulose, and said polymerization anti-decay additive in said mixing chamber to form a cellulose slurry, wherein pulp fibers of said pulp cellulose are fully swelled;
- and
- (d) evaporating said water in said cellulose slurry by a film type evaporator, wherein when a predetermined amount of said water is removed from said cellulose slurry, a cellulose solution with low viscosity is produced.
A cellulose solvent for producing a cellulose solution with low viscosity, comprising a 70% +/-10% by weight of N-methyl morpholine oxide fully mixed with a 30% +/-10% by weight of N-methylolcaprolactam.
Dependencies are inferred from the claim text.