摘要:
The present invention relates in a first aspect to a coated polymer system comprising silica-coated polymer and functional components. Said coating of the polymer is a silica-coating obtained by using Si-N precursor having at least two amino groups and, in addition, coating is affected in the presence of the functional component. In another aspect, the present invention relates to a method for preparing the coated polymer systems containing functional components comprising the step of coating the polymer with a Si-N precursor having at least two amino groups in the presence of the functional component.
摘要:
Described is a method for preparing a coating composition comprising a fluorine and silicon containing polymer, with a reactive diluent, and optionally non-reactive oligomeric additives, crosslinkers, or inorganic particles, which upon curing provides coatings with a good balance of adhesion, mechanical properties, scratch resistance, low surface energy, repellency, and transparency. The coatings are useful as a topcoat, particularly in optical applications.
摘要:
The invention relates to the use of polyorganosiloxanes having 3 or more siloxane units, which has (i) at least one organic component R1, where R1 has at least one carbon-carbon multiple bond, and (ii) at least one hydrocarbon component R2, where R2 has a chain length of 5 to 50 carbon atoms. The polyorganosiloxanes are used in the processing and vulcanization of rubber and are incorporated reactively into it. They give rise to a lowering in the viscosity of the rubber in the course of processing and in some cases to an improvement in the mechanical properties of the vulcanized rubber.
摘要:
A corrosion and abrasion resistant coating composition with at least one alkoxy siloxane and preferably at least two alkoxy siloxanes, wherein the total amount of alkoxy siloxanes in the composition is greater than approximately 70 wt%, a hydrolysable catalyst, an adhesion promoter, and a flow/leveling agent.
摘要:
A non-particulate substrate having adhered thereto a coating composition comprising the reaction product of a transition metal compound such as niobium and a transition metal having electrons in the f orbital, and a silicon-containing material such as an organosilane or an organo(poly)siloxane. Reaction of the silicon-containing material with the transition metal compound results in a better adhering coating to the substrate than a comparable coating prepared from the silicon-containing material itself.
摘要:
A composite article comprises a first glass layer, a silicone layer, a second glass layer, and an organic layer. The silicone layer is disposed adjacent to the first glass layer. The silicone layer includes a cured silicone composition. The second glass layer is disposed adjacent to the silicone layer, spaced from and substantially parallel to the first glass layer. The organic layer is disposed adjacent to the second glass layer, spaced from and substantially parallel to the silicone layer. The organic layer includes a cured organic composition. A method of making a composite article including a first glass layer and a polymeric layer disposed adjacent to the first glass layer includes providing a dual-compartment chamber. The chamber includes a first compartment and a second compartment separated by a polymeric separator. The separator can be manipulated through pressure differentials between the compartments. Pressure is applied to at least one of the silicone layer and the first glass layer with the polymeric separator.
摘要:
A composite article includes a first pane comprising a first window layer formed from a vitreous material and a reinforced silicone layer disposed adjacent to and in contact with the first window layer. The reinforced silicone layer includes a cured silicone composition and a fiber reinforcement. The composite article includes a second pane spaced from the first pane to define a gap therebetween and a frame disposed adjacent to and in contact with the first pane and the second pane to enclose the gap. The composite article may be suitable for load-bearing applications requiring thermal and acoustic insulation.
摘要:
Coatings are provided in which surfaces may be activated by covalently bonding a combination ofsilane derivatives (A) to the metal surface, covalently bonding a lactone polymer (B) to the silane derivative by in situ ring opening polymerization, and depositing at least one layer of a polyester (C) on the bonded lactone polymer. Biologically active agents or therapeutic compounds may be deposited with any of the polyester layers. Such coated surfaces may be useful in medical devices, in particular stents.