Patent ID: 7309735
Filing Date: 2007-12-18
Classification: C07C,C08K,Y10S

Abstract:
1. 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 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) wherein Z is a halogen and R is as defined above; and combining the phosphonium sulfonate salt with a thermoplastic resin.