Fluorosilicone polymers and methods for the preparation thereof

A method for preparation of a fluorosilicone polymer wherein said method is comprises

• (I) reacting zinc oxide and dichlorosilane with the following formula (b) in organic solvent
• {F(CF.sub.2).sub.a C.sub.2 H.sub.4 }.sub.2 SiCl.sub.2 (b)
• where a is an integer with a value of 1 to 10;
• (II) stirring the resulting reaction mixture with water and protic acid to produce diorganopolysiloxane having a silanol group at both molecular chain terminals;
• and
• (III) subjecting said diorganopolysiloxane to a condensation polymerization in the presence of an acidic condensation catalyst.

A method for preparation of a fluorosilicone polymer wherein said method comprises

• (I) reacting zinc oxide and dichlorosilane with the following formula (b) in organic solvent
• {F(CF.sub.2).sub.a C.sub.2 H.sub.4 }.sub.2 SiCl.sub.2 (b)
• where a is an integer with a value of 1 to 10;
• (II) stirring the resulting reaction mixture with water and protic acid to produce diorganopolysiloxane having the silanol group at both molecular chain terminals;
• and
• (III) condensing the product of (II) with a difunctional organosilane as represented by formula
• R.sub.2 Si(NR.sup.1 --COCH.sub.3).sub.2 (d)
• where R and R.sup.1 are selected independently from a monovalent hydrocarbon group into said diorganopolysiloxane.