Low foaming nonionic polyether polycarbonate surfactants and fun

Details Low foaming nonionic polyether polycarbonate surfactants and fun Low foaming nonionic polyether polycarbonate surfactants and fun

1981-06-19

1984-12-18

Willis, Prince E.

Compositions

Water-softening or purifying or scale-inhibiting agents

252 891, 25217422, 25217423, 252351, 252DIG2, 252DIG1, 260463, C11D 172, C11D 1875, C07C 6900

Patent

active

044889828

ABSTRACT:
Improved surfactants and functional fluids are prepared by reacting a monofunctional initiator with an alkylene carbonate or with an alkylene oxide and carbon dioxide to form polyether polycarbonate materials. As surfactants, the resulting materials exhibit reduced foaming characteristics as compared to other nonionic surfactants. The viscosity-temperature relationships, flash points and pour points make them useful as functional fluids.

REFERENCES:
patent: 2866757 (1958-12-01), Newman et al.
patent: 3133113 (1964-05-01), Malkemus
patent: 3332980 (1967-07-01), Leary et al.
patent: 3432473 (1969-03-01), Seeliger
patent: 3642858 (1972-02-01), Frevel et al.
patent: 3689462 (1972-09-01), Maximovich
patent: 4222954 (1980-09-01), Cuscurida et al.
patent: 4330481 (1982-05-01), Timberlake et al.

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