This disclosure generally relates to compositions with omniphobic properties, and methods of preparing the compositions thereof. The omniphobic compositions can be used as coatings to make omniphobic materials, which can be used to manufacture a variety of apparatuses such as wearable devices, e.g., hearing aids.

A release coating composition comprises (A) an organopolysiloxane containing at least two (2) ethylenically unsaturated groups, (B) an organopolysiloxane containing at least 2 Si—H groups per molecule, and (C) a hydrosilylation catalyst. If the organopolysiloxane (A) contains only 2 ethylenically unsaturated groups, the organopolysiloxane (B) contains on average more than 2 Si—H groups per molecule. The composition further comprises (D1) a hydrosilylation inhibitor comprising a maleimide of the general formula (I):

##STR00001##

In formula (I), A.sup.3 represents a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms, and A.sup.1 and A.sup.2 each represent a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms. The composition yet further comprises (D2) a second hydrosilylation inhibitor selected from acetylenic compounds, ethylenically unsaturated isocyanates, acetylenically unsaturated silanes and unsaturated dicarboxylic acid diesters or a maleate compound or a mixture thereof.

A release coating composition comprises (A) an organopolysiloxane containing at least two (2) ethylenically unsaturated groups, (B) an organopolysiloxane containing at least 2 Si—H groups per molecule, and (C) a hydrosilylation catalyst. If the organopolysiloxane (A) contains only 2 ethylenically unsaturated groups, the organopolysiloxane (B) contains on average more than 2 Si—H groups per molecule. The composition further comprises (D1) a hydrosilylation inhibitor comprising a maleimide of the general formula (I):

##STR00001##

In formula (I), A.sup.3 represents a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms, and A.sup.1 and A.sup.2 each represent a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms. The composition yet further comprises (D2) a second hydrosilylation inhibitor selected from acetylenic compounds, ethylenically unsaturated isocyanates, acetylenically unsaturated silanes and unsaturated dicarboxylic acid diesters or a maleate compound or a mixture thereof.

A coating film and a method for forming the same are provided. The coating film controls reduction in repellency of hydrophobic fine particles and increases rub fastness of the coating film. The coating film includes a ground layer containing thermoplastic resin (chlorinated polyolefin or acid modified chlorinated polyolefin, for example) and an upper layer containing hydrophobic fine particles (hydrophobic silica particle or silicone resin particle, for example) formed on the ground layer. Parts of the hydrophobic fine particles contained in the upper layer are buried in the ground layer.

A water-repellent coating composition, and particularly, a water-repellent coating composition having improved adhesion and durability by including a phosphoric acid or a phosphoric acid-based compound, is provided.

A water-repellent coating composition, and particularly, a water-repellent coating composition having improved adhesion and durability by including a phosphoric acid or a phosphoric acid-based compound, is provided.

A silicone release coating composition and method for its preparation and use are described. A release coating prepared by curing the silicone release coating composition has high immediate release force (>50 g/in). A release liner including the release coating is suitable for use as a transfer liner in processes for making composites articles, such as aircraft parts.

A silicone release coating composition and method for its preparation and use are described. A release coating prepared by curing the silicone release coating composition has high immediate release force (>50 g/in). A release liner including the release coating is suitable for use as a transfer liner in processes for making composites articles, such as aircraft parts.

Hybrid moisture curable compositions comprising an acrylic copolymer, a functional silicone, a crosslinker, and a moisture cure catalyst are disclosed. The acrylic copolymer includes (i) a functional monomer selected from a silane monomer, a siloxane monomer, a hydroxy functional monomer, or a combination thereof or (ii) a reaction product of an amino silane and an acrylic polymer derived from one or more (meth)acrylates and one or more carboxylic acid anhydrides. The hybrid compositions are stable and exhibit properties typically ascribed to each individual polymer component. Methods of making and using the hybrid curable compositions are also described.

Hybrid moisture curable compositions comprising an acrylic copolymer, a functional silicone, a crosslinker, and a moisture cure catalyst are disclosed. The acrylic copolymer includes (i) a functional monomer selected from a silane monomer, a siloxane monomer, a hydroxy functional monomer, or a combination thereof or (ii) a reaction product of an amino silane and an acrylic polymer derived from one or more (meth)acrylates and one or more carboxylic acid anhydrides. The hybrid compositions are stable and exhibit properties typically ascribed to each individual polymer component. Methods of making and using the hybrid curable compositions are also described.