The present invention provides for polyisobutenyl sulfonates, methods for preparing them, and composition employing them; wherein said polyisobutenyl sulfonates have improved low temperature and high temperature viscometric properties. The launcher includes an armature for holding the projectile and a launch conduit for accelerating the armature along a longitudinal direction and thereby ejecting the projectile. An intarsia pattern is knitted at a front needle bed FB, and a knitting yarn between the intarsia carrier halted near a boundary and a knitting needle F is used to perform kick-back of the intarsia carrier by the third-course movement of the carriage. these contracts are required by Truth in Savings Regulation DD to state at the time of account opening the penalty for early withdrawal. The portion of the person’s body may be restrained in a substantially pain-free position so as to reduce the pain that would otherwise be felt during exercise.