Non-stick Siloxane Compositions Having a Low Water Roll Off Angle
AssigneeRoss Technology Corporation
InventorsSaibal Bandyopadhyay, Andrew K. Jones
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Abstract
The present disclosure is directed to methods of forming internally lubricated non-stick articles, and coatings, having a low water roll off angle. Also disclosed are materials and compositions for use in the disclosed methods, and the articles and coatings produced by the disclosed methods. The articles and coatings find use in a variety of applications in the biomedical area and in the prevention of biological fouling, such as that which occurs in marine environments.
Claims20
A method of preventing fouling of all or part of a substrate immersed in a fresh water, brackish water, or seawater environment by forming an internally lubricated coating, the method comprising;
- i) combining polymerizable monomers, functionalized oligomers, and/or functionalized polymers, which can be polymerized to prepare silicone elastomers, and HP-particles with a first lubricating fluid to form an internally lubricated pre-polymer composition and applying the composition to a substrate to form a coating of the pre-polymer composition having an exposed surface on all or part of the substrate;
- ii) curing the coating of the internally lubricated pre-polymer composition by polymerizing the monomers, functionalized oligomers, and/or functionalized polymers to form a cured coating;
- and
- iii) applying a second lubricating fluid to all or part of the cured coating, thereby forming an internally lubricated cured coating having an exposed surface;
- wherein the first lubricating fluid comprises greater than 10% of the total weight of the monomers, functionalized oligomers, functionalized polymers, all particles present in the pre-polymer composition, and the first lubricating fluid;
- and
- wherein the internally lubricated cured coating
- (a) accumulates less than 5, or less than 10, grams of tightly adherent material per 100 cm2 of the exposed surface after 100 days submerged in a fresh water, brackish water, or seawater environment at a depth of 1-2 meters,
- (b) accumulates less than 10 or less than 20 grams of tightly adherent material per 100 cm2 of the exposed surface after 250 days submerged in a fresh water, brackish water, or seawater environment at a depth of 1-2 meters, and/or
- (c) accumulates less than 15, less than 20 or less than 25 grams of tightly adherent material per 100 cm2 of the exposed surface after 365 days submerged in a fresh water, brackish water, or seawater environment at a depth of 1-2 meters.
A method of preventing fouling of all or part of a substrate immersed in a fresh water, brackish water, or seawater environment by forming an internally lubricated coating on the substrate, the method comprising;
- i) combining polymerizable monomers, functionalized oligomers, and/or functionalized polymers, which can be polymerized to prepare silicone elastomers, and HP-particles with a first lubricating fluid to form an internally lubricated pre-polymer composition and applying the composition to a substrate to form a coating of the pre-polymer composition on all or part of the substrate;
- ii) curing the coating of the internally lubricated pre-polymer composition by polymerizing the monomers, functionalized oligomers, and/or functionalized polymers to form a cured coating having a surface;
- and
- iii) applying a second lubricating fluid to all or part of the surface of the cured coating, thereby forming an internally lubricated cured coating having an exposed surface;
- wherein the first lubricating fluid comprises greater than 10% of the total weight of the monomers, functionalized oligomers, functionalized polymers, all particles present in the pre-polymer composition, and the first lubricating fluid;
- and
- wherein greater than 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% of the cured coating's exposed surface is free of fouling by tightly adherent material for up to 100 days of submersion in fresh water, brackish water, or seawater environment at a depth of 1-2 meters.
Dependencies are inferred from the claim text.