Y A There are also included by the unsaturated siloxanes of Formula 2, cyclopolysiloxanes including chemically combined units of the formula, U i i0 iu ti Ll J. where R is defined above, Y is selected from R and R radicals, x is an integer equal to l to 9, inclusive, z is a whole number equal to 0 to 17, inclusive, and the sum of x and z is equal to 2' to 17, inclusive.