Patent ID: 11945981
Assignee: DOW SILICONES CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. An adhesion mediator composition comprising:
(i) a trialkoxysilane, of the formula Si(OR)3R1, wherein each R may be the same or different and is an alkyl group having at least two carbons per group and each R1 may be the same or different and is an unsaturated group selected from an alkenyl group or an alkynyl group; which trialkoxysilane is present in an amount of from 20 to 45 wt. % of the composition;
(ii) a platinum group metal based hydrosilylation reaction catalyst;
(iii) an alkoxy titanium compound having from 2 to 4 alkoxy groups in an amount of from 1 to 10 wt. %;
(iv) a tetraalkoxysilane, of the formula Si(OR2)4, wherein each R2 may be the same or different and is an alkyl group having at least two carbons per group, which tetraalkoxysilane is present in an amount of from 5 to 20 wt. % of the composition; and
(v) either
(a′) a polyorganosiloxane containing at least two unsaturated groups, selected from alkenyl groups and alkynyl groups, per molecule, and having a viscosity in a range of 50 mPa·s to 9000 mPa·s using a Brookfield viscometer with an RV-4 spindle at 20 rpm at 25° C.; or
(b′) a mixture of two or more polyorganosiloxanes containing at least two unsaturated groups, selected from alkenyl groups and alkynyl groups, per molecule, which mixture has a viscosity in a range of 50 mPa·s to 9000 mPa·s using a Brookfield viscometer with an RV-4 spindle at 20 rpm at 25° C.;

wherein component (v) is present in an amount of from 25 to 60 wt. % of the composition.