摘要:
Methods for improving adhesion between a coating and a substrate using compositions comprising chlorinated polyolefin and a compound comprising ethylene vinyl acetate are disclosed.
摘要:
An aqueous adhesive composition that includes an aqueous medium and a dispersed resinous phase containing a water dispersible polyurethane, a polymer that includes residues from a vinyl ester monomer, and a polyether containing compound as a plasticizer. The composition may be part of a multi-layer composite that includes a thermoplastic substrate, a thermoplastic cover layer, and an adhesive composition layered over at least a portion of the cover layer in contact with the substrate. The thermoplastic cover layer is adhered to the substrate by applying the adhesive composition to the cover layer, drying the composition forming a dried adhesive layer, heating the cover layer, contacting the dried adhesive layer on the cover layer to the substrate, and applying a vacuum to the substrate for a time and temperature sufficient to adhere the cover layer to the substrate.
摘要:
An aqueous dispersion including polymeric microparticles having a functionality adapted to react with a crosslinking agent is provided. The microparticles are prepared in two or more stages by emulsion polymerization and include a first stage uncrosslinked polymerization reaction product and a final stage crosslinked polymerization reaction product having a glass transition temperature greater than 25 DEG C. The first stage uncrosslinked reaction product is formed from reactants at least one of which is an acid functional group-containing polymerizable, ethylenically unsaturated monomer. The second stage crosslinked reaction product is formed from reactants which include at least one polymerizable, ethylenically unsaturated monomer having two or more sites of reactive unsaturation, and/or at least one ethylenically unsaturated monomer having at least one self-reactive site. Curable compositions which contain the aqueous dispersions as well as multi-component composite coating compositions are also provided. Further provided are substrates coated with the aforementioned compositions.
摘要:
Disclosed herein are 2K structural adhesive compositions comprising (a) a first component comprising (i) an epoxy-adduct formed as a reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid; and (ii) a second epoxy compound; and (b) a second component that reacts with the first component. In one embodiment, the second component is an amine compound. These adhesives may be used to bond together substrate materials such as two half shells of wind turbine blades.
摘要:
A primer and/or pretreatment coating composition comprising: (a) an adhesion promoting component; and (b) corrosion resisting particles selected from: (i) magnesium oxide particles having an average primary particle size of no more than 100 nanometers; (ii) particles comprising an inorganic oxide network comprising one or more inorganic oxides; and/or (iii) chemically modified particles having an average primary particle size of no more than 500 manometers. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi- component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.
摘要:
Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct.
摘要:
A transparent composite article comprising a polyurethane matrix and incorporated within the matrix nanofibers having a diameter up to 5000 nanometers.
摘要:
Disclosed are coating compositions that include a polymer comprising silanol functional groups. Also disclosed are substrates coated with such compositions, methods for coating substrates with such compositions, and methods for imparting self cleaning properties to a substrate.