Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-11-18
1980-02-19
Higel, Floyd D.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
260144, 260159, 260208, 260369, 260377, 260556B, 260561R, 260583H, 260691, 260704, 546 68, C09B 120, C09B 310, C09B 514, C09B 3900
Patent
active
041893808
ABSTRACT:
The ultrafiltration purification of aqueous solutions of polymeric colorants, wherein low molecular weight impurities are removed in an ultrafiltrate leaving a purified polymeric colorant-bearing retentate, is carried out with improved efficiency when, during at least two diavolumes of ultrafiltration, the salt content of the retentate is maintained above about 1% by weight.
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patent: 3526588 (1970-09-01), Michaels et al.
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patent: 4088572 (1978-05-01), Cooper et al.
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Porter et al., Chem. Tech., vol. 1, pp. 56 to 63 (Jan., 1971).
Weissberger (II), Technique of Organic Chemistry, vol. III, p. 565 (1950).
Perry, "Progress in Separation and Purification", vol. 1, pp. 297 to 334 (1968).
Booth Robin G.
Cooper Anthony R.
Benz William H.
Dynapol
Higel Floyd D.
Stepno Norman H.
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