A curable coating composition and the use, especially in heat exchangers, for heating and/or cooling water, in particular tap water, is described. The curable coating comprises, based on solids after curing, 35-80% by weight of an epoxysilane according to the general structure 1 and/or its hydrolysation and/or condensation products, 1: R.sup.1R.sup.2.sub.aSiR.sup.3.sub.b with R1 being 3-glycidyloxypropyl, R.sup.2 being methyl, R.sup.3 being alkyloxy or acyloxy, a being 0, 1 or 2 and b being 3a and 20-65% by weight of a blocked polyisocyanate and optionally further components. The coating provides improved corrosion protection on aluminium surfaces, reduces limescale formation on heat exchanger surfaces and is able to withstand lateral and/or temporal temperature gradients when coated on heat exchanging surfaces.

A (meth)acrylic copolymer of the present invention includes a constituent unit (B) derived from a polysiloxane block-containing polymerizable monomer (b) represented by Formula (b1). In Formula (b1), R.sup.30 represents a hydrogen atom or a methyl group, a represents an integer of 2 to 5, b represents a number of 0 to 50, c represents an integer of 0 to 18, d represents a number of 1 to 1000, e represents a number of 1 to 80, R.sup.31 to R.sup.39 each represents an alkyl group, an alkoxy group, a phenyl group, a substituted phenyl group, a phenoxy group, or a substituted phenoxy group.

Certain embodiments described herein are directed to wipes and coating materials that can be used to provide an oleophobic surface coating on one or more surfaces of an article. In some examples, the wipe may retain the coating material and can transfer at least some of the coating material to a surface where it can be heat cured to provide the oleophobic coating. In some instances, the wipe can provide an oleophobic surface coating with easy-to-clean performance for at least one cycle and up to ten cycles.

An oil-repellent composition is provided containing an aqueous emulsion in which a copolymer (A) containing a constituent unit based on an ethylenically unsaturated carboxylic acid ester monomer (A1) and a constituent unit based on an ethylenically unsaturated carboxylic acid monomer (A2) is dispersed in an aqueous medium (B), and polyether-modified polydimethyl siloxane (C).

A perfluoro(poly)ether group-containing silane compound represented by formula (1a) or formula (1b) (wherein the symbols are as defined in the description).

(Rf-PFPE).sub.-X(CR.sup.a.sub.kR.sup.b.sub.lR.sup.c.sub.m).sub.(1a)

(R.sup.c.sub.mR.sup.b.sub.lR.sup.a.sub.kC).sub.X-PFPE-X(CR.sup.a.sub.kR.sup.b.sub.lR.sup.c.sub.m).sub.(1b)

The present invention relates to a formulation technology that forms an omniphobic, slippery gel coating The formulation technology makes use of the cross-linking between two hydrophobic polymer reagents, solvated in a hydrophobic polymer lubricant, as they are combined and deposited on a substrate.

A copolymer preparable by copolymerization of monomer components comprising: a) polydimethylsiloxane mono(meth)acrylate having a molecular weight of from 300 to 10000 grams/mole; b) optionally C.sub.3-C.sub.10 carboxylic acid-functional mono(meth)acrylate or a salt thereof; c) at least one C.sub.5-C.sub.16 hydroxyalkyl mono(meth)acrylate; and d) at least one of: i) C.sub.10-C.sub.30 linear alkyl mono(meth)acrylate optionally having one or two carbon atoms replaced by O or S; or ii) at least one (meth)acrylate represented by the formula wherein: R.sup.1 is H or a C.sub.1-C.sub.4 alkyl group; n is an integer from 0 to 18, inclusive; each X is O, S, C.sub.2-C.sub.6 oxyalkylenoxy, C.sub.2-C.sub.6 thioalkylenethio, or a covalent bond; and R.sup.2 is independently a C.sub.5-C.sub.50 hydrocarbyl group. The copolymer is useful as a water- and oil-repellent treatment on a substrate. Certain monomers corresponding to component ii) are also disclosed.

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Durable, anti-fouling, crosslinked zwitterionic coatings that are grafted to the surface of a substrate through covalent bonding are disclosed. When exposed to a light source, zwitterionic monomers react with a crosslinker and with activated radicals at the surface of the substrate, simultaneously forming the crosslinked zwitterionic coating and anchoring it to the surface of the substrate. Photomasking techniques can be used to micropattern the zwitterionic coatings. The zwitterionic coatings can be applied to a variety of substrates, including medical devices and systems.

The present application discloses novel multilayer polysiloxane-based fouling control coating systems having in-chided therein active constituents like biocides and/or enzymes. Further, the polysiloxane-based layers may individually have in eluded as a part thereof hydrophilic oligomer/polymer moieties, and/or said may further comprising one or more hydrophilic-modified polysiloxane oils.

The present invention relates to a composition comprising a polymerized C.sub.10-30alkanetriC.sub.1-5alkoxysilane, a surfactant, an organic acid catalyst and water, and optionally an inorganic component and to a process for manufacturing said composition. The invention also relates to uses of the composition as a water repellant coating, and/or as a mold-resistant coating and/or as a fire-resistant coating on organic or inorganic surfaces.