Abstract:
The invention relates to an aqueous fluoropolymer hybrid composition having superior weathering resistance while maintaining excellent mechanical properties in coatings, paints, caulks and adhesives. The composition is comprised of: a) a vinylidene fluoride polymer, such as KYNAR® polymers from Arkema, b) a first vinyl polymer immiscible with the vinylidene fluoride polymer and having a Tg of less than 0° C., and c) a second vinyl polymer of a different composition, also having a Tg of less than 0° C., and containing groups capable of crosslinking. The invention also relates to waterborne coatings or paints containing the aqueous fluoropolymer hybrid composition, and an article, object, or structure coated with the fluoropolymer hybrid composition on at least one surface, either in a factory or in the field, to confer protection and decorative properties. Free films made from the waterborne compositions of the invention have a dynamic mechanical analysis loss tangent, tan (δ), of greater than 0.22 at a temperature of 0° C.
Abstract:
The invention relates to an intertwined multilayer primer/fluoropolymer coating on the glass substrate. The final coating has excellent wet adhesion to glass, good weathering, durability, chalking resistance, chemical resistance, and dirt pickup resistance. The coating is an environmentally friendly aqueous, fluoropolymer coating composition. The coating process involves applying a polyurethane primer to the glass substrate, and partially, but not completely crosslinking this primer coating. An aqueous hydroxyl-functional fluoropolymer coating is then applied to the partially cross-linked primer coating, and the coating allowed to fully cure. The invention also relates to the intertwined multilayer primer/fluoropolymer coating on the glass substrate. The final coating has excellent wet adhesion to glass, good weathering, durability, chalking resistance, chemical resistance, and dirt pickup resistance.
Abstract:
Fluoropolymer-based coatings with enhanced gloss are obtained by using a semi-crystalline fluorinated polymer having a very small particle size, in combination with a nucleating agent (such as PTFE) and, optionally, an acrylic polymer.
Abstract:
The invention provides a weatherable composite including a moisture barrier system having a moisture vapor transmission rate at or below 1×10−2 g/m2/day, at least one weatherable layer or coating, and a substrate that is disposed between the moisture barrier system and the weatherable layer or coating. The weatherable composite may be adhered to one or both sides (e.g., front and back) of a photovoltaic thin-film cell or organic light emitting diode such that the weatherable layer(s) or coating side(s) of the weatherable composite is exposed to the environment. The weatherable composite protects the device from both moisture and UV exposure.
Abstract translation:本发明提供了一种耐候性复合材料,其包括具有等于或低于1×10-2g / m 2 /天的水蒸气透过率的防潮系统,至少一个耐候层或涂层,以及设置在防潮系统 和耐候层或涂层。 耐候性复合材料可以粘附到光伏薄膜电池或有机发光二极管的一侧或两侧(例如,前面和后面),使得耐候性复合材料的耐候层或涂层侧暴露 到环境。 耐候性复合材料保护设备免受湿气和紫外线的侵害。
Abstract:
Copolymers of one or more halogenated olefins and one or more halogenated co-monomers selected from the group consisting of halogenated alkenyl ethers, halogenated alkenyl esters, and halogenated (meth)acrylates are useful in various end-use applications wherein the presence of halogen (e.g., fluorine) in the copolymer imparts one or more desirable properties, as compared to analogous copolymers not containing halogen.
Abstract:
Copolymers of one or more halogenated olefins and one or more halogenated co-monomers selected from the group consisting of halogenated alkenyl ethers, halogenated alkenyl esters, and halogenated (meth)acrylates are useful in various end-use applications wherein the presence of halogen (e.g., fluorine) in the copolymer imparts one or more desirable properties, as compared to analogous copolymers not containing halogen.