Methods of making an antistatic agent

Details Methods of making an antistatic agent Methods of making an antistatic agent

2007-05-01

2007-05-01

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Sulfonic acids or salts thereof

C562S030000

Reexamination Certificate

active

10966774

ABSTRACT:
A method for making the 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, the method comprising combining in an aqueous medium a compound of generic formula (2):wherein M is Li or Na, and X, q, p, and r are as defined above, with a stoichiometric excess of a compound of the generic formula (3):in-line-formulae description="In-line Formulae" end="lead"?(R)4P-Z  (3)in-line-formulae description="In-line Formulae" end="tail"?wherein Z is a halogen and R is as defined above; and separating the product of formula (1) from the medium.

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