Patent ID: 9273186
Filing Date: 2016-03-01
CPC Classification: C08G,C08L,C09D,C09J

Claim Text:
1. A composition, comprising an olefinically functionalized siloxane oligomer having not more than one olefinic radical on a silicon atom thereof, wherein the olefinically functionalized siloxane oligomer has a Si—O-crosslinked structural element which forms catenary, cyclic, crosslinked or optionally three-dimensionally crosslinked structures, with a structure of formula I, the structural elements are derived from alkoxysilanes, wherein A is an olefinic radical selected from a linear, branched or cyclic alkenyl- or cycloalkenyl-alkylene-functional group having in each case 2 to 16 C atoms, and B is a saturated hydrocarbon radical selected from a linear, branched or cyclic alkyl radical having 1 to 16 C atoms, Y is OR R R R R a, b, c, x and y are each independently an integer, wherein 1≦a, 0≦b, 0≦c, x independently at each occurrence is 0 or 1, y independently at each occurrence is 0 or 1, and (a+b+c)≧2, the structural elements [(R a weight-average molecular weight (Mw) is greater than or equal to 315 g/mol, and an amount of residues of the acid catalyst during preparation is less than or equal to 250 mg/kg of composition, wherein a weight-average molecular weight (Mw) is greater than 315 g/mol a number-average molecular weight (Mn) is greater than 300 g/mol, and a polydispersity (D), as a ratio of Mw/Mn, is from 1.05 to 1.25.