1. Rhône-Poulenc US 2 556 897 1947 A. F. Bidaud
2. General Electric Comp. US 2 741 630 1955 C. E. Reed J. M. Tome
3. Wacker US 4 032 557 1975 H. Spork R. Strasser R. Riedle
4. Bayer US 4 060 537 1975 G. Maass H. Luecking W. Buechner B. Degen
5. Siloxane Polymers and Copolymers