Leydig, Voit & Mayer
Organosiloxane and process for preparing the same
 The present invention relates to an organosiloxane compound suitable for the modification of silicone rubbers and synthetic resins, an organosiloxane compound useful as its intermediate, and a process for preparing them. The organosiloxane compound of the present invention can be represented by the general formula (IV) ##STR1## wherein j is an integer of 1 to 2000, R is an alkyl group having 1 to 4 carbon atoms, and R.sup.1 is a pentafluorophenyl group or a straight-chain or a branched fluoroalkyl group represented by the formula (II) EQU C.sub.a H.sub.b F.sub.2a-b+1 (II) PA1 wherein a is an integer of 3 to 18, and b is an integer of 0 to 2a. The siloxane compounds of the present invention also include compounds having siloxane chains, at least one of the chains having a substituent with a fluorine atom containing group at the terminal thereof. Each of the molecules constituting the polysiloxane compound of the present invention has a terminal hydrosilyl group portion and a fluorine atom-containing terminal substituent portion therein. Since the reactive group of the hydrosilyl group is chemically bonded to the synthetic resins, the deterioration in characteristics with time can be hindered. The synthetic resins can be provided with the specific function of the fluoroalkyl group without impairing characteristics which the polysiloxane has. 
Chisso Corporation
C C
C08G C08G
inventional inventional
Nobumasa Yoshinori Takahiro Takaharu
Ohtake Akutsu Saho Nakano