The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Mar. 29, 2022
Dow Silicones Corporation, Midland, MI (US);
Florian Geyer, Wiesbaden, DE;
Michael Backer, Wiesbaden, DE;
DOW SILICONES CORPORATION, Midland, MI (US);
Abstract
There is provided an adhesion mediator composition for use in the adhesion of silicone elastomers made from hydrosilylation curable silicone rubber compositions to thermoplastic substrates, especially polyolefin substrates. There is also provided a process for adhering silicone elastomers to thermoplastic substrates using the adhesion mediator composition. The adhesion mediator composition comprises: (i) a trialkoxysilane; (ii) a platinum group metal based hydrosilylation reaction catalyst; (iii) an alkoxy titanium compound; (iv) a tetraalkoxysilane; and (v): either (a′) a polyorganosiloxane containing at least two unsaturated groups; or (b′) a mixture of two or more polyorganosiloxanes containing at least two unsaturated groups. The method comprises the steps of: (a) optionally, activating a thermoplastic substrate surface; (b) treating the optionally activated thermoplastic substrate surface with the adhesion mediator composition; (c) applying a hydrosilylation curable silicone rubber composition on to the treated surface resulting from step (b); and (d) curing the hydrosilylation curable silicone rubber composition.