Liquid mixtures of trialkylphosphine oxides

Details Liquid mixtures of trialkylphosphine oxides Liquid mixtures of trialkylphosphine oxides

1984-02-01

1986-03-11

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus containing

523506, 524912, C07F 953

Patent

active

045755639

ABSTRACT:
Liquid mixtures of trialkylphosphine oxides, useful as antistats in thermoplastic polymers, are obtained by alkylating excess phosphine with a mixture of higher .alpha.-olefins to give a mixture of higher alkylated phosphines and unreacted phosphine and alkylating that mixture with a lower .alpha.-olefin. This method provides a larger percentage of higher alkyl groups and a lower percentage of lower alkyl groups compared to alkylating the phosphine with all of the mixed .alpha.-olefins in a single reaction. The shift in higher alkyl groups decreases the volatility of the trialkylphosphine mixture and is an advantage when preparing plastic compositions at higher formulation temperatures.

REFERENCES:
patent: 3304330 (1967-02-01), Yoke
patent: 3309408 (1967-03-01), Moedritzer
patent: 3520939 (1970-07-01), Brennan
patent: 3657352 (1972-04-01), Kleiner
patent: 3709852 (1973-01-01), Gordon et al.
patent: 4452716 (1984-06-01), Cummins et al.

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