Sidechain functionalized organosiloxane compounds are provided having a first end and a second end; a polysiloxane backbone; and a first plurality of sidechains covalently attached to the polysiloxane backbone and a second plurality of sidechains covalently attached to the polysiloxane backbone; wherein the first plurality of sidechains comprise polyalkylene glycol sidechains; wherein the first plurality of sidechains and the second plurality of sidechains comprise a tethered end covalently attached to the polysiloxane backbone and a free end opposite to the tethered end; and wherein the free end in one or both of the first plurality of sidechains and the second plurality of sidechains comprises a reactive end group. Compositions comprising the sidechain functionalized organosiloxane compounds are also provided, as well as coated articles. Sidechain functionalized lubricants are also provided that can be used with compositions and coated articles herein.

An aqueous coating additive containing a polyether-modified siloxane represented by an average composition formula (1): (R.sub.3SiO.sub.1/2).sub.a(R.sub.2R′SiO.sub.1/2).sub.a′(R.sub.2SiO.sub.2/2).sub.b(RR′SiO.sub.2/2).sub.b′(RSiO.sub.3/2).sub.c(SiO.sub.4/2).sub.d. “R”'s each represent an organic group selected from groups represented by —C.sub.qH.sub.2q—O—(C.sub.2H.sub.4O).sub.e(C.sub.3H.sub.6O).sub.f—R.sup.1. The R′ groups satisfy expression (I): 5≤{(molecular weight of the —C.sub.2H.sub.4O— moiety)/(molecular weight of an entire polyether-modified siloxane)}×20≤10; and expression (II): {(molecular weight of the —C.sub.3H.sub.6O— moiety)/(molecular weight of the —C.sub.2H.sub.4O— moiety)}≤1.0. This provides an additive for an aqueous coating and an aqueous coating composition that have little environmental impact and that provide excellent antifouling performance.

An aqueous coating additive containing a polyether-modified siloxane represented by an average composition formula (1): (R.sub.3SiO.sub.1/2).sub.a(R.sub.2R′SiO.sub.1/2).sub.a′(R.sub.2SiO.sub.2/2).sub.b(RR′SiO.sub.2/2).sub.b′(RSiO.sub.3/2).sub.c(SiO.sub.4/2).sub.d. “R”'s each represent an organic group selected from groups represented by —C.sub.qH.sub.2q—O—(C.sub.2H.sub.4O).sub.e(C.sub.3H.sub.6O).sub.f—R.sup.1. The R′ groups satisfy expression (I): 5≤{(molecular weight of the —C.sub.2H.sub.4O— moiety)/(molecular weight of an entire polyether-modified siloxane)}×20≤10; and expression (II): {(molecular weight of the —C.sub.3H.sub.6O— moiety)/(molecular weight of the —C.sub.2H.sub.4O— moiety)}≤1.0. This provides an additive for an aqueous coating and an aqueous coating composition that have little environmental impact and that provide excellent antifouling performance.

A coating composition is provided herein, wherein the coating composition includes an organic binder and a polyorganosiloxane, optionally with a hardener. There is also provided a process for making the same coating composition.

A coating composition is provided herein, wherein the coating composition includes an organic binder and a polyorganosiloxane, optionally with a hardener. There is also provided a process for making the same coating composition.

A moisture-curable curable composition includes a perfluoro(poly)ether group-containing silane compound (a1) represented by formula (I); a perfluoro(poly)ether group-containing silane compound (a2) represented by formula (II) (in each formula, the definition of each group is as defined in the specification); (b) an organic silicon compound having at least two OR.sup.2 groups (here, R.sup.2s are each independently a hydrogen atom or a monovalent organic group at each appearance) bonded to Si atom or a partially hydrolyzed condensate thereof; and (c) a condensation catalyst.

A moisture-curable curable composition includes a perfluoro(poly)ether group-containing silane compound (a1) represented by formula (I); a perfluoro(poly)ether group-containing silane compound (a2) represented by formula (II) (in each formula, the definition of each group is as defined in the specification); (b) an organic silicon compound having at least two OR.sup.2 groups (here, R.sup.2s are each independently a hydrogen atom or a monovalent organic group at each appearance) bonded to Si atom or a partially hydrolyzed condensate thereof; and (c) a condensation catalyst.

A curable composition contains (A) a perfluoro(poly)ether group-containing silane compound having two or more Si atoms bonded to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group, (B) a compound (other than (A)) having at least two OR.sup.2 groups bonded to an Si atom (in the formula, R.sup.2 each independently are a hydrogen atom or a monovalent organic group at each occurrence) or a partial hydrolysis condensate thereof, (C) a condensation catalyst, and (D) an inorganic filler with a primary particle size from 0.01 to 0.1 μm.

A curable composition contains (A) a perfluoro(poly)ether group-containing silane compound having two or more Si atoms bonded to at least one group selected from the group consisting of a hydroxyl group and a hydrolyzable group, (B) a compound (other than (A)) having at least two OR.sup.2 groups bonded to an Si atom (in the formula, R.sup.2 each independently are a hydrogen atom or a monovalent organic group at each occurrence) or a partial hydrolysis condensate thereof, (C) a condensation catalyst, and (D) an inorganic filler with a primary particle size from 0.01 to 0.1 μm.

A cover member according to the present invention includes a transparent substrate that has a first main surface and a second main surface and a transparent first functional layer that is layered on the first main surface of the substrate.