Recycling materials comprising cellulosic and synthetic fibers

Details Recycling materials comprising cellulosic and synthetic fibers Recycling materials comprising cellulosic and synthetic fibers

1994-09-29

1996-05-28

Nutter, Nathan M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536128, 127 1, 127 36, D01F 1304, A62D 300, C12P 100, C12P 502

Patent

active

055213057

ABSTRACT:
Recycling materials comprising cellulosic and synthetic fibers
Described is a process for recycling materials comprising fiber mixtures comprising cellulose fibers, comprising the steps of:
i) providing fiber mixtures comprising cellulosic fibers and fibers composed of synthetic polymers, and
ii) subjecting these mixtures to a microbial hydrolysis in which the cellulosic fibers are completely degraded.
The process makes it possible in particular to separate fiber mixtures. For this, the microorganisms and the hydrolyzate are removed in a conventional manner following step ii), and the remaining synthetic polymers are carried off in a conventional manner to be further recycled.

REFERENCES:
patent: 3711392 (1973-01-01), Metzger
patent: 3937675 (1976-02-01), Gruntfest et al.
patent: 4597872 (1986-07-01), Andersson
patent: 4933283 (1990-06-01), Chen et al.
patent: 5295985 (1994-03-01), Romesser et al.
European Search Report, No. 94114771.2, Feb. 3, 1995.

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