摘要:
The invention relates to an antimicrobial coating composition formed by admixing choline bitartrate or choline chloride, an aminopropyltrialkoxysilane and water. This coating composition is preferably sprayed onto a surface and allowed to dry. Preferably the surface is a stainless steel surface. The coating reduces the amount of E. Coli on the surface of the substrate.
摘要:
A method for making a dielectric film includes a substrate on which is deposited a siloxane starting material and particles, wherein the siloxane starting material has a siloxane polymer, a siloxane oligomer and/or silane monomers, and wherein the particles have an average particle size of less than 400 nm. After deposition, heat and/or electromagnetic energy is applied to the siloxane particle layer so as to cure the layer and form a dielectric film on the substrate. The formed film is optically transmissive to visible light and transmits at least 80% of the visible light incident thereon, and is electrically insulating and has a sheet resistance of 1000 Ω/sq or more.
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:
[Problem] To provide a perhydropolysilazane making it possible to form a siliceous film with minimal defects, and a curing composition comprising the perhydropolysilazane.[Means for Solution] The present invention provides a perhydropolysilazane having a weight-average molecular weight of 5,000 to 17,000, characterized in that when 1H-NMR of a 17% by weight solution of said perhydropolysilazane dissolved in xylol is measured, the ratio of the amount of SiH1,2 based on the aromatic ring hydrogen content of the xylol is 0.235 or less and the ratio of the amount of NH based on the aromatic ring hydrogen content of the xylol is 0.055 or less, and a curing composition comprising the perhydropolysilazane. The present invention also provides a method for forming a siliceous film, comprising coating the curing composition on a substrate and heating.
摘要:
A hybrid material for light emitting diodes, comprising a) an organopolysilazane material, comprising repeating units of formulae (I) and (II) [—SiR1R2—NR3—]x (I) [—SiHR4—NR5—]y (II) wherein the symbols and indices have the following meanings: R1 is C2-C6-alkenyl or C4-C6-alkadienyl; R2 is H or an organic group; R3 is H or an organic group; R4 is H or an organic group; R5 is H or an organic group; x is 0.001 to 0.2; and y is 2x to (1−x), with the proviso that x+y≦1 and that y can be 0 if R2 is H, and b) inorganic nanoparticles having a mean diameter in the range of from 1 to 30 nm, which are surface modified with a capping agent comprising a C1-C18-alkyl and/or C1-C18-alkenyl group, is useful as encapsulation material for LEDs.
摘要:
Provided herein are silicon-based compositions, which after curing is a coating composition having strong substrate adhesion and scratch resistance. The compositions are formed from a mixture of constituents comprising: from about 20% to about 90% (w/w) of a first siloxane selected from the group consisting of silsesquioxane, methylmethoxysiloxane, and combinations thereof; and from about 10% to about 80% (w/w) of one or more silicon compounds selected from the group consisting of a second siloxane, silane, and silazane. Optionally, the compositions may comprise from about 0.1% to about 5% (w/w) alkyltitanate.
摘要:
Novel N-alkyl substituted perhydridocyclic silazanes, oligomeric N-alkyl perhydridosilazane compounds, and N-alkylaminodihydridohalosilanes, and a method for their synthesis are provided. The novel compounds may be used to form high silicon nitride content films by thermal or plasma induced decomposition.
摘要:
A polymeric material formed by reacting aminopolyol having a structure: wherein R4 is selected from the group consisting of —H and —CH2—CH2—OH; and an organosilane, wherein said organosilane has a structure: wherein R1 is selected from the group consisting of —H, —CH3 and —CH2—CH3 and R2 is selected from the group consisting of —OH, —O—CH3, O—CH2—CH3, alkyl, alkyl with a chlorine moiety, alkyl with an amino moiety, and alkyl with a quaternary ammonium group.
摘要:
[Object] To provide a means capable of further improving gas barrier capabilities and durability of gas barrier capabilities for a gas barrier film.[Solving Means] A gas barrier film having: a substrate; a first barrier layer that is arranged on at least one surface of the substrate, has a film density of 1.5 to 2.1 g/cm3, and includes an inorganic compound; and a second barrier layer that is formed on the surface of the substrate on the same side where the first barrier layer is formed and includes silicon atoms, oxygen atoms, and at least one added element selected from the group consisting of elements of Groups 2-14 of the long form of the periodic table (excluding silicon and carbon), the abundance ratio of oxygen atoms to silicon atoms (O/Si) being 1.4 to 2.2, and the abundance ratio of nitrogen atoms to silicon atoms (N/Si) being 0 to 0.4.