Chemistry Reference
In-Depth Information
Scheme 5.22
Synthesis of sulfonate surfactants (A14-A16)
Scheme 5.23
Synthesis of gemini anionic surfactant (A17)
Alkyl phosphates are made by treating the ester ethoxylates of rosin with a
phosphorylating agent, usually phosphorous pentoxide. The reaction yields a mixture
of mono- and diesters of phosphoric acid. Wang and co-workers reported (
Scheme
5.24
) that a phosphate anionic surfactant was synthesised by phosphorylating
polyoxyethylene abietate (A18) using phsphorus pentoxide as the phosphorylating.
Polyoxyethylene abietate was prepared from disproportionated rosin and ethylene
oxide [41].
Scheme 5.24
Synthesis of phosphate anionic surfactant (A18)
