Surface treating compositions
AssigneeImperial Chemical Industries PLC
InventorsNorman Geoffrey Creasey, Leslie Clark Pike
Life of this patent
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Abstract
Compositions for surface treatments to give lower release values comprising 100 parts by weight of a hydroxy-containing diorganopolysiloxane, 1 to 20 parts by weight of an organohydrogenpolysiloxane, 0.05 to less than 20 parts by weight of an aminoalkoxy silicon compound, 1 to 20 parts by weight of an organotin compound and, if desired, up to 10 parts by weight of a non-amino-containing alkoxy silicon compound.
Claims18
A composition for use in surface treatment consisting essentially of 100 parts by weight of a diorganopolysiloxane having at least two hydroxyl groups attached to different silicon atoms per molecule and of viscosity not less than 3000 cs at 25.degree.C, 1 to 20 parts by weight of an organohydrogenpolysiloxane of viscosity not greater than 1000 cs at 25.degree.C and containing at least one silicon-bonded hydrogen atom for every three silicon atoms, 0.05 to less than 1 parts by weight of an aminoalkoxysilicon compound, 0.5 to 10 parts by weight of an alkoxy silicon compund of the formula:
- R.sub.g.sup.11 (R.sup.12 O).sub.f Sio
- wherein R.sup.11 is a methyl group, R.sup.12 is selected from the group consisting of methyl, ethyl and methoxyethyl groups, g is 1.0 to 1.8, f is 0.3 to 1.0 and g+f is not less than 2.0 and 1 to 20 parts by weight of a tin compound in an organic solvent.
Dependencies are inferred from the claim text.