摘要:
A silicon-based coating composition for a wide range of mold surfaces, which composition is formed from a mixture of constituents comprising appropriate portions of silazane, siloxane, and silane, and optionally organic solvent. The composition, after curing, results in an extreme release product that is non-transferable to the finished part, allowing for proper adhesion of coatings or adhesives to the finished surface without additional surface preparation. The cured coatings are ultrathin, having a thickness between 0.1 μm and 3 μm, and having a hardness between about 4H and about 9H.
摘要:
A film-forming composition having favorable effects such as curability and embeddability and resist underlayer film for use in lithography process for semiconductor devices. The film-forming composition including, as silane, hydrolyzable silane, hydrolysis product thereof, or hydrolysis-condensation product thereof, wherein hydrolyzable silane includes hydrolyzable silane of Formula (1): R1aR2bSi(R3)4-(a+b) Formula (1) in Formula (1), R1 is organic group of Formula (2) and is bonded to silicon atom through Si—C bond: The film-forming composition, wherein the hydrolyzable silane is combination of hydrolyzable silane of Formula (1) with another hydrolyzable silane, wherein other hydrolyzable silane is at least one selected from group made of hydrolyzable silane of Formula (3): R7cSi(R8)4-c Formula (3) and hydrolyzable silane of Formula (4): R9dSi(R10)3-d2Ye Formula (4) Resist underlayer film, obtained by applying the resist underlayer film-forming composition on semiconductor substrate and baking.
摘要:
To provide a composition for powder coating material which can be sufficiently pulverized, and with which a powder coating material capable of forming a coating film excellent in weather resistance and adhesion to the substrate can be obtained; a powder coating material capable of forming a coating film excellent in weather resistance and adhesion to the substrate; and a coated article having a coating film excellent in weather resistance and adhesion to the substrate, on its surface. A composition for powder coating material comprising a polyvinylidene fluoride (A) having a melting point of from 151 to 200° C., and an acrylic resin (B) having a glass transition temperature of from 40 to 90° C. A powder coating material comprising the composition for powder coating material, and a coated article having a coating film formed of the powder coating material.
摘要:
A coating composition and a method for coating metallic substrates, such as aircraft components exposed to elevated temperatures and/or oxidative conditions. The coating composition includes an aqueous mixture having about 2 vol % to about 50 vol % organosilane, about 0.3 to about 25 vol % metal alkoxide, and about 0.1 to about 30 vol % organic complexing agent. The coating composition may be deposited on a metallic substrate and cured to form a sol-gel coating on the surface of the substrate that is adherent to the substrate, and oxidation and discoloration resistant.
摘要:
The present invention relates to a curable composition providing upon curing a transparent antistatic coating comprising a silica organosol, a salt comprising an alkali cation and a Bronsted acid. The invention further relates to optical articles comprising a substrate at least partially coated with a transparent antistatic coating formed by depositing onto substrate and curing the above curable composition. The obtained optical articles exhibit enhanced antistatic properties, high optical transparency, low haze and good mechanical properties, in particular a good abrasion resistance.
摘要:
Provided herein is a method for coating a surface. The method comprises providing a towelette moistened with a mixture of constituents to form a non-aqueous silicon-based composition comprising 7% to 80% (w/w of the total composition) polysilazane, 1% to 10% (w/w of the total composition) polysilane, 0.2% to 1% (w/w of the total composition) polysiloxane, and 20% to 70% (w/w of the total composition) at least one organic solvent; wherein polysilazane is present in a 10:1 to 110:1 weight ratio to polysiloxane; and wherein the polysilane is of a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and are chosen from alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl. The mixture from the towelette to form a coating on a surface and the coating is cured ambiently without additional heat. Also provided are towelettes containing the mixture.
摘要:
A composition for pattern formation capable of forming a directed self-assembling film having a regular array structure with fine pitches accompanied by fewer defects, and in turn capable of forming a pattern having a fine and favorable shape. A composition for pattern formation contains a block copolymer that forms a phase separation structure by directed self-assembly, and a solvent, in which the block copolymer has a first block composed of a first repeating unit that includes a silicon atom, a second block composed of a second repeating unit that does not include a silicon atom, and a first group that bonds to at least one end of the main chain and links to the first block, in which the first group is a monovalent group that forms a compound having C log P of no less than 2.4 provided that a methyl group is bonded thereto. The first group may be a monovalent hydrocarbon group having 3 to 25 carbon atoms, or a monovalent aromatic heterocyclic group having 3 to 25 carbon atoms and one hetero atom that constitutes the ring.
摘要:
Described herein is a method of making silsesquioxane-like particles using polyhydrosiloxanes and a water soluble base. The silsesquioxane-like particles have an average particle diameter of less than 100 micrometers and are substantially free of —OH bonds. In one embodiment, the silsesquioxane-like particles may be used in films.
摘要:
A novel silicone-acrylic copolymer which comprises a covalently bonded silicone polymer with an acrylic polymer through the —Si—O—Si— linkage is described. The silicone-acrylic copolymer is a reaction product of (a) a silicone polymer, (bi) a mixture of acrylic monomers wherein at least one acrylic monomer comprises a silane (meth)acrylic monomer and/or a siloxane (meth)acrylic macromer with a radical initiator to form an acrylic prepolymer or (bii) an acrylic polymer which comprises a silane or a siloxane functional group; and (c) a scrambling catalyst, wherein the ratio of the silicone polymer (a) and the mixture of acrylic monomers (bi) or polymer (bii) is from 50:1 to 1:50. The silicone-acrylic copolymer is useful as an adhesive, sealant, coating, and the like.