Roll-on perfume compositions containing polyoxybutylene-polyoxyethylene copolymers

Claim 1

In a liquid roll-on composition containing, in weight percent based upon the total composition weight, from 5 percent to 15 percent of a perfume oil, from 25 percent to 40 percent of a volatile alcohol, from 10 percent to 60 percent water, and from 10 percent to 30 percent of a nonionic polyether surfactant, the improvement comprising, employing as the nonionic polyether surfactant a cogeneric polyoxybutylene-polyoxyethylene block copolymer corresponding to the formula Y[(C.sub.4 H.sub.8 O).sub.n (C.sub.2 H.sub.4 O).sub.m H].sub.x where Y is an organic radical derived from an organic initiator molecule having x active hydrogens, and where the values of n and x are integers such that an internal polyoxybutylene hydrophobe, corresponding to that portion of the molecule represented by the formula Y[(C.sub.4 H.sub.8 O).sub.n ].sub.x has a molecular weight of at least 500, and wherein the value of m in the external polyoxyethylene hydrophiles corresponding to those portions of the molecule represented by the formula [(C.sub.2 H.sub.4 O).sub.m ].sub.x is such that the hydrophiles comprise from 50 percent to about 90 percent by weight of the polyether.