Graft copolymers of a polyether moiety on a polycarboxylate back

Details Graft copolymers of a polyether moiety on a polycarboxylate back Graft copolymers of a polyether moiety on a polycarboxylate back

1987-09-03

1989-10-17

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

25217423, 252548, 252DIG2, C11D 337

Patent

active

048745405

ABSTRACT:
A composition having a high chelation value may be made by blending about 50 to 80 wt-% of a polyether such as polyethylene glycol, about 20 to 50 wt-% of a polycarboxylate such as polyacrylate moiety or an acrylate monomer, and about 0.1 to 0.5 mole-%, based upon the polyacrylate moiety or the monomer, of an organic peroxy catalyst such as t-butyl perbenzoate at a temperature below about 110.degree. C. but sufficient to liquefy the blend and cause grafting of a polyether on the polycarboxylate.

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