Patent ID: 7429636

Claim:
Organohydrogensilicon compounds containing at least one silicon-bonded hydrogen atom per molecule described by formula (I) where each R is independently selected from a hydrogen atom and a monovalent hydrocarbon group comprising 1 to 20 carbon atoms which is free from aliphatic unsaturation, a is an integer from 1 to 18, b is an integer from 1 to 19, a+b is an integer from 3 to 20, each X is an independently selected functional group selected from a halogen atom, an ether group, an alkoxy group, an alkoxyether group, an acyl group, an epoxy group, an amino group, a silyl group, or a -Z-R 4 group, where each Z is independently selected from an oxygen and a divalent hydrocarbon group comprising 2 to 20 carbon atoms, each R 4 group is independently selected from —BR u Y 2-u , or a group described by formula (II): (Y 3-n R n SiO 1/2 ) c (Y 2-o R o SiO 2/2 ) d (Y 1-p R p SiO 3/2 ) e (SiO 4/2 ) f (CR q Y 1-q ) g (CR r Y 2-r ) h (O(CR s Y 2-s )) j (CR t Y 3-t ) j (II) where B refers to boron, each R is as described above, the sum of c+d+e+f+g+h+i+j is at least 2, n is an integer from 0 to 3, o is an integer from 0 to 2, p is an integer from 0 to 1, q is an integer from 0 to 1, r is an integer from 0 to 2, s is an integer from 0 to 2, t is an integer from 0 to 3, u is an integer from 0 to 2, each Y is an independently selected functional group selected from a halogen atom, an ether group, an alkoxy group, an alkoxyether group, an acyl group, an epoxy group, an amino group, a silyl group, or a Z-G group, where Z is as described above, each G is a cyclosiloxane described by formula (III): where R and X are as described above, k is an integer from 0 to 18, m is an integer from 0 to 18, k+m is an integer from 2 to 20, provided in formula (II) that one of the Y groups is replaced by the Z group bonding the R 4 group to the cyclosiloxane of formula (I), and provided further (a) at least one X group of Formula (I) is a -Z-R 4 group, (b) if Z is a divalent hydrocarbon group, a=1, c=2, e+f+g+h+i+j=0 and d>0, then at least one d unit (i.e. Y 2-o R o SiO 2/2 ) contain a -Z-G group or the c units (i.e. Y 3-n R n SiO 1/2 ) have no -Z-G group or at least two -Z-G groups, (c) if Z is a divalent hydrocarbon group, a=1, c=2 and d+e+f+g+h+i+j=0, then the c units (i.e. Y 3-n R n SiO 1/2 ) have no -Z-G group or at least two -Z-G groups, and (d) if g+h+i+j>0 then c+d+e+f>0.