A surface modifying coating for an article that includes a first component having a surface in frictional engagement with a surface of a second component. At least a portion of a surface of one of the components is coated with a coating including a mixture of at least two silicones: (i) a hydrolyzable organopolysiloxane with a viscosity of less than or equal to 1,000 centistokes and that is capable of crosslinking reaction upon exposure to moisture at ambient temperature; and (ii) a second organopolysiloxane copolymerizable with the first hydrolyzable organopolysiloxane and having viscosity of greater than or equal to 5,000 centistoke; wherein the coating provides a maximum break loose force equal to or less than three times a kinetic extrusion force such that stiction is reduced between engaged surfaces. The coating is compatible with high-temperature sterilization methods sometimes used on articles for medical uses, is resistant to leaching, migration and breakdown during long-term aging conditions, and does not require a catalyst, crosslink agent, or additional energy source for preparation or application.

A surface modifying coating for an article that includes a first component having a surface in frictional engagement with a surface of a second component. At least a portion of a surface of one of the components is coated with a coating including a mixture of at least two silicones: (i) a hydrolyzable organopolysiloxane with a viscosity of less than or equal to 1,000 centistokes and that is capable of crosslinking reaction upon exposure to moisture at ambient temperature; and (ii) a second organopolysiloxane copolymerizable with the first hydrolyzable organopolysiloxane and having viscosity of greater than or equal to 5,000 centistoke; wherein the coating provides a maximum break loose force equal to or less than three times a kinetic extrusion force such that stiction is reduced between engaged surfaces. The coating is compatible with high-temperature sterilization methods sometimes used on articles for medical uses, is resistant to leaching, migration and breakdown during long-term aging conditions, and does not require a catalyst, crosslink agent, or additional energy source for preparation or application.

The present invention is directed towards an electrodepositable coating composition comprising, consisting essentially of, or consisting of an ionic salt group-containing silicone-based main film-forming polymer comprising functional groups; and a curing agent reactive with the functional groups of the ionic salt group-containing silicone-based main film-forming polymer. Also disclosed are coatings, coated substrates, and methods of coating a substrate.

The present invention is directed towards an electrodepositable coating composition comprising, consisting essentially of, or consisting of an ionic salt group-containing silicone-based main film-forming polymer comprising functional groups; and a curing agent reactive with the functional groups of the ionic salt group-containing silicone-based main film-forming polymer. Also disclosed are coatings, coated substrates, and methods of coating a substrate.

Photocurable adhesion-promoting compositions containing organic titanates and/or organic zirconates and partially reacted alkoxysilanes and the use of the photocurable adhesion-promoting compositions to provide adhesion between metal substrates and an overlying radiation-cured sealant are disclosed.

A process can be used for preparing silicone (meth)acrylates, according to which at least one acetoxysilicone is reacted with at least one hydroxyfunctional (meth)acrylic acid ester. The corresponding silicone (meth)acrylates are useful, and can be used in curable compositions.

A process can be used for preparing silicone (meth)acrylates, according to which at least one acetoxysilicone is reacted with at least one hydroxyfunctional (meth)acrylic acid ester. The corresponding silicone (meth)acrylates are useful, and can be used in curable compositions.

1) A sealant composition comprising: from 3% to 80% of a polymer (A) comprising an alkoxysilane group, at least 25% of a carbonate filler (B), and from 0.5% to 20% of a polysiloxane resin (C) comprising, as groups directly linked to the silicon atom: at least one phenyl group; and at least one group chosen from a hydroxyl and an aminoalkylene group; and from 0.1% to 1% of a crosslinking catalyst (D);

said percentages being expressed by weight on the basis of the total weight of said composition.

2) The use of said composition as adhesive, sealant or coating.

A water-repellent coat according to the present disclosure includes: an undercoat layer that is formed on a surface of a base material and contains a base resin, at least one kind of spherical particles, and water-repellent particles, the at least one kind of spherical particles having an average particle diameter of 2 μm or more and 1000 μm or less and being selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles, the water-repellent particles having an average particle diameter of 5 nm or more and 30 nm or less; and a topcoat layer formed on the undercoat layer and containing a water-repellent resin and the water-repellent particles contained in the undercoat layer.

A water-repellent coat according to the present disclosure includes: an undercoat layer that is formed on a surface of a base material and contains a base resin, at least one kind of spherical particles, and water-repellent particles, the at least one kind of spherical particles having an average particle diameter of 2 μm or more and 1000 μm or less and being selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles, the water-repellent particles having an average particle diameter of 5 nm or more and 30 nm or less; and a topcoat layer formed on the undercoat layer and containing a water-repellent resin and the water-repellent particles contained in the undercoat layer.