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US 9,434,857 B2Granted
Rapid cure silicone lubricious coatings
AssigneeEthicon, Inc.
InventorDuan Li Ou
Life of this patent
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Abstract
Novel, lubricious coatings for medical devices are disclosed. The coatings provide improved lubricity and durability, and are readily applied in coating processes. The present invention is also directed to a novel platinum catalyst for use in such coatings. The catalyst provides for rapid curing, while inhibiting cross-linking at ambient temperatures, thereby improving the production pot life of the coatings.
Claims16
A lubricious, silicone coating composition, comprising:
- a cross-linkable silicone polymer having reactive functionalities;
- about 10 wt. % to about 90 wt. % of a non-cross-linkable silicone polymer, based on total solids, wherein said polymer has a weight average molecular weight between about 400,000 and 10,000,000;
- a silicone cross-linking agent;
- and,
- a catalyst, wherein said catalyst consists essentially of platinum divinyltetramethyldisiloxane ethynylcyclohexanol complex having the formula:
- Pt[(CH2═CH)(Me)2Si]2O.C6H10(OH)(C═CH),
- wherein said composition has a weight.
4 more elements
A lubricious, silicone coating composition, comprising:
- a cross-linkable polydimethylsiloxane polymer having reactive functionalities;
- about 10 wt. % to about 90 wt. % of a non-cross-linkable silicone polymer, based on total solids, wherein said polymer has a weight average molecular weight between about 400,000 and 10,000,000;
- a polymethylhydrosiloxane cross-linking agent;
- and,
- a platinum catalyst, wherein said catalyst consists essentially of platinum divinyltetramethyldisiloxane ethynylcyclohexanol complex having the formula:
- Pt[(CH2═CH)(Me)2Si]2O.C6H10(OH)(C═CH),
- wherein said composition has a weight.
4 more elements
Dependencies are inferred from the claim text.