Urethanes containing fluorine and polysiloxane, process for their preparation and their use

Claim 2

A urethane containing fluorine and polysiloxane, of the following formula 1 ##STR37## in which R denotes CH 3 or C 2 H 5 ,

Claim 3

y denotes a number from 5 to 500,

Claim 4

y denotes a number from 5 to 500,

Claim 5

B denotes a radical of the following formula 2 ##STR38## in which R f denotes a perfluoroalkyl radical with 4 to 20 carbon atoms, an ω-H-perfluoroalkyl radical with 4 to 20 carbon atoms, or a radical of the formula R f 'SO 2 NR 3 or of the formula R f 'CH 2 CH 2 SO 2 NR 3 , in which R f ' is a perfluoroalkyl radical with 4 to 20 carbon atoms and R 3 =H or C 1-4 -alkyl, R 2 denotes an alkyl radical with 4 to 20 carbon atoms, a denotes an integer from 1 to 4, b denotes a number from 0 to 10, b' denotes a number from 0 to 10, m denotes a number from 1 to 2 and n denotes a number from 0 to 1, the sum of m+n being not more than 2, and A denotes a radical corresponding to one of the following formulae (3) to (11) ##STR39## B' denotes H or likewise denotes a radical of the formula 2, X denotes O or NR 4 , in which R 4 =H or C 1-4 -alkyl -X-R 1 -denotes a radical corresponding to one of the following formulae (12') to (15') ##STR40## in which z and z' are each an integer from 1 to 10, R 5 has one of the meanings of R 2 or of R f , and X, R 4 , a, and b have the meanings defined previously, and R 1 -X denotes a radical corresponding to one of the following formulae 12 to 15 ##STR41## in which z, z', R 5 , X, R 4 , a, and b have the meanings defined previously.

Claim 6

B denotes a radical of the following formula 2 ##STR38## in which R f denotes a perfluoroalkyl radical with 4 to 20 carbon atoms, an ω-H-perfluoroalkyl radical with 4 to 20 carbon atoms, or a radical of the formula R f 'SO 2 NR 3 or of the formula R f 'CH 2 CH 2 SO 2 NR 3 , in which R f ' is a perfluoroalkyl radical with 4 to 20 carbon atoms and R 3 =H or C 1-4 -alkyl, R 2 denotes an alkyl radical with 4 to 20 carbon atoms, a denotes an integer from 1 to 4, b denotes a number from 0 to 10, b' denotes a number from 0 to 10, m denotes a number from 1 to 2 and n denotes a number from 0 to 1, the sum of m+n being not more than 2, and A denotes a radical corresponding to one of the following formulae (3) to (11) ##STR39## B' denotes H or likewise denotes a radical of the formula 2, X denotes O or NR 4 , in which R 4 =H or C 1-4 -alkyl -X-R 1 -denotes a radical corresponding to one of the following formulae (12') to (15') ##STR40## in which z and z' are each an integer from 1 to 10, R 5 has one of the meanings of R 2 or of R f , and X, R 4 , a, and b have the meanings defined previously, and R 1 -X denotes a radical corresponding to one of the following formulae 12 to 15 ##STR41## in which z, z', R 5 , X, R 4 , a, and b have the meanings defined previously.

Claim 7

A urethane containing fluorine and polysiloxane as claimed in claim 1, in which R denotes CH 3 or C 2 H 5 , y denotes a number from 10 to 300, B denotes a radical of the formula (2), in which R f denotes a perfluoroalkyl radical with 6 to 16 carbon atoms, R 2 denotes an alkyl radical with 10 to 18 carbon atoms, a denotes 2, b denotes 0 or 1 to 5, b' denotes 0 or 1 to 5, m denotes 1 to 2 and n denotes 0, A denotes a radical corresponding to one of the formulae (4), (8), (9), (10), or (11), B' denotes H or a radical of the formula (2) with the meanings given for formula (2), X denotes O or NR 4 , in which R 4 =H or is C 1-4 -alkyl and --R 1 --X denotes a radical corresponding to one of the formulae (12), (14) and (15), and --X--R 1 -- denotes a radical corresponding to one of the formulae (12'), (14'), and (15'), in which z and z' are each an integer from 1 to 5, R 5 has the meaning given for R 2 or for R f and X, R 4 , a and b have the meanings given.

Claim 8

A process for the preparation of a urethane containing fluorine and polysiloxane as claimed in claim 1, which comprises reacting a fluoroalcohol-isocyanate adduct of the following formula (16) ##STR42## in which R f , R 2 , a, b, b', m, n and A are as defined in claim 1, with a polysiloxane of the following formula (17) ##STR43## in which R, X, --X--R 1 --, --R 1 --X-- and y are as defined in claim 5, in a molar ratio of 1 to 2:1 at a temperature of 30° to 130° C.