Process for cleaning spinnerets

Details Process for cleaning spinnerets Process for cleaning spinnerets

1977-12-20

1980-04-29

Scovronek, Joseph

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 40, 134 42, 252170, B08B 900

Patent

active

042004713

ABSTRACT:
For the smooth production of filaments from polyesters it is very important to use accurately cleaned polymers and also accurately cleaned spinnerets. For removing remainders of polyesters from the spinneret a mixture consisting of at least 70 percent by weight of tri-, tetra-, penta- and hexaethyleneglycol and from 2 up to 10 percent by weight mono- and/or diethyleneglycol and up to 20 percent by weight of hepta-, octa- and higher ethyleneglycols has proved to give best results. Zinc acetate may be added for the solving process.

REFERENCES:
patent: 2610166 (1952-09-01), Parry
patent: 2907687 (1958-02-01), Scigliano
patent: 3058918 (1962-10-01), Gatza
patent: 3485670 (1969-12-01), Fisher
patent: 3761429 (1973-09-01), Yamano
Glycols, Union Carbide Chemicals Co., F-4763G, N.Y., pp. 1, 2 and 21.

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