Purification of wet strength resins

Details Purification of wet strength resins Purification of wet strength resins

1980-05-19

1981-05-26

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 292EP, 260 296HN, 260 296PT, 525336, 528483, 528499, 528501, C08F 808, C08F 824, C08F 832

Patent

active

042699517

ABSTRACT:
Certain wet strength resins based on the epichlorohydrin/polyamine reaction which are characterized by extremely long gel times can be purified from epichlorohydrin residuals by azeotropic distillation.

REFERENCES:
patent: 3007887 (1961-11-01), Essig
patent: 3177181 (1965-04-01), Baum et al.
patent: 3453182 (1969-07-01), Reber et al.
patent: 4226957 (1980-10-01), Van Eenam
patent: 4226974 (1980-10-01), Goodman et al.

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