Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-06-26
1980-01-29
Schofer, Joseph L.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
54 25, 528 95, 528121, 528407, 525504, C02B 156, C08G 5902
Patent
active
041860861
ABSTRACT:
The cured reaction product of a polyalkylenepolyamine and a polyepoxide is useful as a weak base ion exchange resin. For example, the reaction of triethylenetetramine and diglycidyl ether of bisphenol A forms a weak base resin having an excellent total weak base capacity.
REFERENCES:
patent: 2469684 (1949-05-01), Dudley
patent: 2614085 (1952-10-01), Fendberg
patent: 2898310 (1959-08-01), Green
patent: 3347802 (1967-10-01), Ashby et al.
patent: 4026831 (1977-05-01), Moriya et al.
patent: 4032482 (1977-06-01), Moriya
Kulkosky Peter
Schofer Joseph L.
The Dow Chemical Company
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