Abstract:
The invention relates to a method for forming functional layers on an inorganic or organic substrate, characterised in that a) the inorganic or organic substrate is exposed to a low-temperature plasma, a corona discharge, an intense irradiation and/or a flame-treatment, b) 1) at least one activatable initiator or 2) at least one activatable initiator and at least one ethylenically unsaturated compound in the form of melts, solutions, suspensions or emulsions is/are applied to the inorganic or organic substrate, whereby at least one function regulating group, which regulates the desired surface characteristics of the treated substrate, is incorporated into the activatable initiator and/or the ethylenically unsaturated compound and c) the coated substrate is heated and/or irradiated with electromagnetic waves to regulate the desired surface characteristics. The invention also relates to substrates coated according to said method and to the use of said substrates.
Abstract:
The invention relates to layer systems comprising (1) a substrate (S), (2) a scratch-resistant layer (K) obtained by at least partial hardening of a coating agent containing a polycondensate produced according to a sol-gel method and based on at least one silane, and (3) a covering layer (D) obtained by at least partial hardening of a coating agent obtained by common hydrolysis of (a) a compound of general formula I M(R')m (I) wherein M represents an element or a compound selected from the group consisting of Si, Ti, Zr, Sn, Ce, Al, B, VO, In and Zn, R' represents a hydrolysable radical, and m represents a whole number between 2 and 4, and (b) a compound of general formula (II) RbSiR'a, (II) wherein the radicals R' and R are the same or different, R' is defined as above, R represents an alkyl group, an alkenyl group, an aryl group or a hydrocarbon group having at least one halogen group, an epoxy group, a glycidyloxy group, an amino group, a mercapto group, a methacryloxy group or a cyano group, and a and b independently represent values between 1 and 3, the sum of a and b being equal to four. Said layer systems are characterised by an outstanding scratch resistance and abrasion resistance.
Abstract:
A coherent material is formed on a substrate ( 10 ) by providing a precursor suspension ( 14 ) in which particulates are suspended in a carrier fluid, and directing the precursor suspension ( 14 ) at the substrate ( 10 ) from a first source ( 12 ). Generally contemporaneously with application of the deposited precursor suspension ( 14 ) to the surface, hot gases, e.g. hot gases produced by a flame ( 16 ), are directed at the substrate ( 10 ) from a remote second source ( 18 ) to fuse the particulates into the coherent material.
Abstract:
The present invention is a process for continuous extrusion coating the surfaces of a metal strip which includes the steps of moving said metal strip by means of a plurality of rolls. The strip then has impinged on its first and second surfaces to be coated an oxidizing flame. The first surface passes through a corona discharge and extruded onto the first surface is a melted polymeric extrudiate. Thereafter, the surface is passed over a chill roll having a temperature less than said extrudiate to provide a first coated surface. The second surface is then subjected to an oxidizing flame and corona discharge and a melted polymeric extrudiate is extruded onto the second surface. Thereafter, the second surface is passed over a chill roll having a temperature less than said extrudiate to provide a second coated surface. The coated strip is then reheated to about the melt temperature of said extrudiates and quenched to provide an extrusion coated strip of the present invention.
Abstract:
A coherent material is formed on a substrate ( 10 ) by providing a precursor suspension ( 14 ) in which particulates are suspended in a carrier fluid, and directing the precursor suspension ( 14 ) at the substrate ( 10 ) from a first source ( 12 ). Generally contemporaneously with application of the deposited precursor suspension ( 14 ) to the surface, hot gases, e.g. hot gases produced by a flame ( 16 ), are directed at the substrate ( 10 ) from a remote second source ( 18 ) to fuse the particulates into the coherent material.
Abstract:
A coherent material is formed on a substrate ( 10 ) by providing a precursor suspension ( 14 ) in which particulates are suspended in a carrier fluid, and directing the precursor suspension ( 14 ) at the substrate ( 10 ) from a first source ( 12 ). Generally contemporaneously with application of the deposited precursor suspension ( 14 ) to the surface, hot gases, e.g. hot gases produced by a flame ( 16 ), are directed at the substrate ( 10 ) from a remote second source ( 18 ) to fuse the particulates into the coherent material.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Erzeugung sehr dünner, stark hydrophober und oleophober Schichten auf polymeren Substraten. Die erfindungsgemäßen Schichten sind in kochendem Wasser stabil und verhalten sich resistent gegen das Scheuern mit Kunststoffvliesen unter Druck. Nach dem beschriebenen Verfahren werden Substratoberflächen mit physikalischen Methoden vorbehandelt. Die anschließende Beschichtung mit einer Lösung von fluoralkylfunktionellen Organopolysiloxanen in Wasser oder Alkohol und Tempern der Substrate bei höherer Temperatur führt zu den gewünschten Eigenschaften.
Abstract:
A cap for closing a container comprises a vapour permeable body and carries a coating of a relatively vapour impermeable material which is applied to the cap as a liquid and then cured to form a solid. The coating is permanently adhered to the cap body usually on the inside and contains a polymer which acts as a barrier usually to oxygen at least, and is preferably a vinyl chloride/vinylidene chloride copolymer or polyvinylidene chloride. Methods of making the coated caps are also disclosed.