Patent ID: 8217112

Claim:
A plasticized polybutene composition comprising: (A) one or more butene homopolymers consisting essentially of butene or butene copolymers consisting essentially of butene and C 3 to C 8 alpha-olefins having a weight average molecular weight of 30,000 to 2,000,000 g/mol; (B) 0.01 to 40 wt % of one or more non-functionalized plasticizers (“NFP”) based upon the weight of the one or more butene homopolymers or copolymers and the NFP where the NFP comprises carbon and hydrogen and has (i) a pour point of less than −40° C., (ii) a viscosity index of 120 or more, (iii) a specific gravity of 0.700 to 0.860 and (iv) a kinematic viscosity of 1 to 200 cSt at 100° C. wherein elastomers are substantially absent from the composition and where ethylene homopolymers and copolymers having a weight average molecular weight of from 500 to 10,000 are substantially absent; and wherein the composition comprises less than 10 wt % of one or more tackifiers and the NFP comprises a linear or branched paraffinic hydrocarbon composition having a number average molecular weight of 500 to 21,000 g/mol, less than 10 wt % sidechains having 4 or more carbons, at least 15 wt % sidechains having 1 or 2 carbons, and less than 2 wt % cyclic paraffins.