Patent ID: 6448347
Filing Date: 2002-09-10
Classification: C07C,C08F,Y02P

Abstract:
A method for preparing an amidoalkanesulfonic acid feed stream suitable for incorporation into a polymer, comprising(a) combining under reactive conditions a molar excess of an unsaturated nitrile, a source of SO3 and of the elements of water, and an olefin, in a substantially non-aqueous medium wherein the molar ratio of water to SO3 is about 0.5 to about 1.5, thereby forming an amidoalkanesulfonic acid as a component of a crude reaction product which includes the substantially non-aqueous medium, unreacted starting materials, and byproducts; and (b) transferring the crude reaction product from (a), including the substantially non-aqueous medium, unreacted starting materials, and byproducts, as a feed stream without substantial purification steps, into an apparatus for incorporation of the amidoalkanesulfonic acid into a copolymer.