Product and process of preparing tetrafluoroethylene polymer aqu

Details Product and process of preparing tetrafluoroethylene polymer aqu Product and process of preparing tetrafluoroethylene polymer aqu

1978-01-13

1979-09-25

Derrington, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296MP, C08L 2718

Patent

active

041690877

ABSTRACT:
Heretofore, the only practical way known to decrease the viscosity of an ionically thickened tetrafluoroethylene polymer dispersion has been by diluting it with water. This decreases the solids level, which can have an undesirable effect on subsequent processing. It has now been discovered that if the tetrafluoroethylene polymer dispersion contains a sodium phosphate in which the ratio of Na.sub.2 O to P.sub.2 O.sub.5 is between 1:1 and 3:1, the viscosity of the dispersion can be decreased by adding selected inorganic electrolytes.

REFERENCES:
patent: 3489595 (1970-01-01), Brown
patent: 3830770 (1974-08-01), Ribbans
The Condensed Chemical Dictionary, 6th Edition, Reinhold Pub. Corp., New York, 1961, p. 1051.

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