Method of making a thermoplastic composition containing an antistatic agent
AssigneeSabic Innovative Plastics IP B.V.
InventorsTheodorus Lambertus Hoeks, Chiel Albertus Leenders, Robert Dirk van de Grampel
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Abstract
A method for preparing a thermoplastic composition containing an antistatic agent is described. The antistatic agent is a phosphonium sulfonate salt that is prepared by a method that includes combining in an aqueous medium sodium hydroxide and/or lithium hydroxide, a sulfonyl fluoride compound, and a phosphonium halide compound; and separating the phosphonium sulfonate from the aqueous medium. The phosphonium sulfonate salt is then combined with a thermoplastic resin.
Claims10
A method of preparing a thermoplastic composition, comprising:
- preparing a phosphonium sulfonate salt of generic formula (1)
- wherein each X is independently a halogen or hydrogen, provided that the molar ratio of halogen to hydrogen is greater than about 0.90;
- p is 0 or 1 and q and r are integers of 0 to about 7 provided that q+r is less than 8 and that if p is not zero then r is greater than zero;
- and each R is the same or different hydrocarbon radical containing 1 to about 18 carbon atoms;
- wherein preparing the phosphonium sulfonate salt comprises
- combining in an aqueous medium
- sodium hydroxide and/or lithium hydroxide;
- a compound of the generic formula (4)
- wherein X, q, p, and r are as defined above;
- and
- a compound of the generic formula (3)
- (R)4P-Z (3)
- wherein Z is a halogen and R is as defined above;
- and
- separating the phosphonium sulfonate of formula (1) from the aqueous medium;
- and
- combining the phosphonium sulfonate salt with a thermoplastic resin.
A method of preparing a polycarbonate composition, comprising:
- preparing tetrabutylphosphonium perfluorobutane sulfonate by a method comprising
- combining in an aqueous medium
- lithium hydroxide,
- perfluorobutane sulfonyl fluoride, and
- a tetrabutylphosphonium halide;
- and
- separating tetrabutyiphosphonium perfluorobutane sulfonate from the aqueous medium;
- and
- combining the tetrabutylphosphonium perfluorobutane sulfonate with a polycarbonate.
Dependencies are inferred from the claim text.