Novel surfactants based on poly(alkylene carbonate)s

Details Novel surfactants based on poly(alkylene carbonate)s Novel surfactants based on poly(alkylene carbonate)s

1988-04-21

1989-09-12

Pertilla, Theodore E.

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

Synthetic resins

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

252351, 525461, 525523, 527300, 528405, 558265, C08L 7102

Patent

active

048661430

ABSTRACT:
A polyether polycarbonate block copolymer nonionic surface-active agent and method for making the same. The polyether polycarbonate surface active agent is comprised of a hydrophilic portion comprised of a polymer selected from the group consisting of a polyoxyalkylene polyether, a saccharide, a saccharide polyoxyalkylenate, a polycarbonate having a carbon dioxide content of from about 1 to 15 molar percent and mixtures thereof and a hydrophobic portion comprising alkylene and carbonate units arranged in alternating or random order to form a poly(alkylene carbonate) having a total carbon dioxide content of from about 25 to 50 molar percent and a total molecular weight of from about 300 to 10,000. The hydrophobic portion is bonded to the hydrophilic portion at each side of a reactive hydrogen. The surface active agent is prepared by polymerizing the hydrophilic portion with the hydrophobic portion in a weight ratio of about 10:90 to 90:10.

REFERENCES:
patent: 4634743 (1987-01-01), Prier
patent: 4663399 (1987-05-01), Peters
patent: 4665136 (1987-05-01), Santangelo et al.
patent: 4686273 (1987-08-01), Harris
patent: 4686274 (1987-08-01), Harris et al.
patent: 4686276 (1987-08-01), Myers
patent: 4745162 (1988-05-01), Harris
patent: 4812530 (1989-03-01), Priddy et al.

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