Abstract:
A method for making a silicone hydrogel contact lens is provided. In one embodiment, a prepolymer mixture is polymerized in a lens mold in an atmosphere having less than about 10000 ppm oxygen to form a silicone hydrogel contact lens suitable for extended wear as characterized by producing less than 10% corneal swelling after a period of continuous wear of 7 days including normal sleep periods. In one embodiment, the prepolymer mixture comprises at least one oxyperm material containing hydrophilic groups, wherein the at least one oxyperm material is a siloxane-containing macromer or monomer, at least one ionperm material, and a cross-linking agent. In certain embodiments, the polymerization of the prepolymer mixture may be carried out in an atmosphere having less than about 1000 ppm oxygen.
Abstract:
A method for applying a metal on a substrate comprises: a) applying a coating by treatment in a plasma, comprising a compound selected from alkanes up to 10 carbon atoms, and unsaturated monomers, and b1) producing polymers on the surface of said substrate, said polymers comprising carboxylic groups and adsorbed ions of a second metal, reducing said ions to the second metal, or alternatively b2) producing polymers on the surface, bringing the surface of said substrate in contact with a dispersion of colloidal metal particles of at least one second metal, and c) depositing said first metal on said second metal. Advantages include that materials sensitive to for instance low pH or solvents can be coated. Substrates including glass, SiO2 with very few of no abstractable hydrogen atoms as well as polymer materials containing halogen atoms can be coated with good adhesion.
Abstract:
An apparatus and method for treating layers are provided that use a plasma zone sealed from the outer atmospheric pressure. The apparatus includes a plasma reactor with a substrate carrier in form of a container receiving device and a closing element that is joined with the substrate carrier by a lifting device.
Abstract:
An exemplary embodiment provides coated polymeric substrates that have a polymeric substrate body with a coated surface. The surface coating includes more than one pair of coating layers. Each pair of coating layers includes a first applied coating layer and a second applied coating layer. In addition, an indicator, applied on top of or between coating layers, provides an indication of wear of the coating. The first and second applied coating layers have a thickness between about 3 to about 10 nanometers. The coating exhibits a Hall-Petch effect.
Abstract:
A method for coating a substrate surface by PECVD is provided, the method comprising generating a plasma from a gaseous reactant comprising an organosilicon precursor and optionally O2. The lubricity, hydrophobicity and/or barrier properties of the coating are set by setting the ratio of the O2 to the organo silicon precursor in the gaseous reactant, and/or by setting the electric power used for generating the plasma. In particular, a lubricity coating made by said method is provided. Vessels coated by said method and the use of such vessels protecting a compound or composition contained or received in said coated vessel against mechanical and/or chemical effects of the surface of the uncoated vessel material are also provided.
Abstract:
A coated article is provided. The coated article comprises a transparent substrate, a base paint layer directly formed on a surface of the transparent substrate, an aluminum layer directly formed on the aluminum layer, and a top paint layer directly formed on the aluminum layer. The base paint layer is made of a paint containing color paste. The top paint layer is made of a transparent paint. A method for making the coated article is also described.
Abstract:
A method is provided for applying a reactive thiol containing coating to a substrate. The method includes subjecting the substrate to a plasma discharge in the presence of a compound of formula (I) or formula (Ia): where X is an optionally substituted straight or branched alkylene chain(s) or aryl group(s); R1, R2 or R3 are optionally substituted hydrocarbyl or heterocyclic groups, and m is an integer greater than 0; Rn is a number of optionally substituted hydrocarbyl or heterocyclic groups, where n is 0-5.
Abstract translation:提供了一种将反应性含硫醇涂层施加到基底上的方法。 该方法包括在式(I)或式(Ia)化合物存在下使基板进行等离子体放电:其中X是任选取代的直链或支链亚烷基链或芳基; R1,R2或R3是任选取代的烃基或杂环基,m是大于0的整数; R n是多个任选取代的烃基或杂环基团,其中n为0-5。
Abstract:
The present invention is related to a method or the deposition of a chlorinated polymeric layer onto a ubstrate, said method comprising the steps of:—generating a plasma in a gaseous medium by means of a plasma device;—placing the substrate in contact with the plasma, or in the post-plasma area;—introducing in said plasma or in the post-plasma area a chlorinated precursor of the chlorinated polymer.
Abstract:
A hard, transparent coating for a substrate and associated method for coating is disclosed. The coating includes alternating layers of a soft coating and a hard coating. The coating further includes a sensor. The electrical resistivity of the sensor may be measured to determine if the coating has been degraded. The coating may further include a hydrophobic outer layer.
Abstract:
The present invention concerns items that contain or consist of a plasma polymer product, consisting of carbon, silicon, oxygen and hydrogen, wherein the ESCA spectrum of the plasma polymer product, with calibration to the aliphatic portion of the C 1s peak at 285.00 eV, in comparison with a trimethylsiloxy-terminated polydimethylsiloxane (PDMS) with a kinematic viscosity of 350 mm2/s at 25° C. and a density of 0.97 g/ml at 25° C.,the Si 2p peak has a bond energy that is shifted by 0.44 eV, at most, to higher or lower bond energies, and the O 1s peak has a bond energy that is shifted by 0.50 eV, at most, to higher or lower bond energies.