The condensation degree of the organoxysiloxanes is not particularly restricted, and preferably lies within the range represented by the following formula: SiOx(OR)y [0035] wherein x is 0???x???1.2, and y is 1.4???y???4 with the proviso that (2x+y) is 4; and R is an organic group, preferably C1 to C4 alkyl. [0036] The factor or subscript x represents the condensation degree of the siloxane.