Silicones which contain lateral peripheral vinyl ether groups having aliphatic or aromatic urethanes

A siloxane copolymer having a molecular weight from 5,000 to 100,000 and represented by formula I:

• (R.sub.a).sub.3 SiO(V).sub.v --(W).sub.w --(Y).sub.y --(Z).sub.z --Si(R.sub.a).sub.3
• where
• V=--SiR.sub.a R.sub.b O--;
• W=--SiR'.sub.a (R.sub.c --R.sub.d --OCH.dbd.CH.sub.2) O--;
• Y=--SiR.sub.a R.sub.g O--;
• Z=--R.sub.a R.sub.g SiC.sub.n H.sub.2n R'.sub.f C.sub.n H.sub.2n SiR.sub.a R.sub.g O--with n=2, 3 or 4;
• v, y, z are identical or different numbers, but they cannot be simultaneously zero;
• w is always different from zero;
• and the ratio v+y+z/w is between 1 and 100;
• the groups R.sub.a represent, independently of each other, a radical selected from the group consisting of CH.sub.3, C.sub.2 H.sub.5, n-C.sub.3 H.sub.7, n-C.sub.4 H.sub.10 radicals, and phenyl, with not more than one phenyl radical being attached to a given silicon atom;
• R.sub.b =R.sub.a ;
• R'.sub.a =R.sub.a, --OCH.sub.3 or OC.sub.2 H.sub.5
• R.sub.c =C.sub.2 H.sub.4 --, --C.sub.3 H.sub.6 --, --C.sub.2 H.sub.4 --S--C.sub.2 H.sub.4 --, or --C.sub.3 H.sub.6 --S--C.sub.2 H.sub.4 --;
• R.sub.d =--OCONHR.sub.e NHCO--, --NH--COOC.sub.2 H.sub.4 --, or --NHCOOC.sub.3 H.sub.6 --;
• R.sub.e =--C.sub.6 H.sub.3 (CH.sub.3)--, --C.sub.6 H.sub.4 CH.sub.2 C.sub.6 H.sub.4 --, --(CH.sub.2).sub.6 --, --C.sub.6 H.sub.10 --CH.sub.2 --C.sub.6 H.sub.10 --, or --CH.sub.2 --[(CH.sub.3).sub.3 C.sub.6 H.sub.7 ]--;
• R.sub.g =--C.sub.k H.sub.2k --R.sub.f where k=2, 3 or 4;
• R.sub.f is a perfluoroalkyl group with 1 to 12 carbon atoms, or a monovalent radical of an oligomer of oxetanes or fluorinated oxiranes;
• R'.sub.f is a perfluoroalkylene group with 4 to 10 carbon atoms, or an alpha,omega-fluoroalkenyl group formed by telomerization of tetrafluoroethylene, or a telechelic divalent radical of an oligomer derived from fluorinated oxetanes or oxiranes, or an m-phenylenedi(hexafluoroisopropoxy) radical;
• and
• the units V, W, Y and Z can be arranged randomly, in order or alternated along the polymer chain.