Abstract:
An aqueous coating composition including: a first emulsion polymer including, as copolymerized units, 5% to 50% styrene monomer, by weight based on the weight of the first emulsion polymer, wherein the glass transition temperature (Tg) of the first emulsion polymer is from 55° C. to 110° C.; a certain optional second emulsion polymer; and from 20% to 35%, by weight based on the total weight of the first emulsion polymer and the optional second emulsion polymer, coalescent selected from the group consisting of hexaoxatricosane, C4 alkyl glutarates, C4 alkyl succinates, C4 alkyl adipates, and mixtures thereof is provided. A method for providing a coating using the aqueous coating composition, particularly a coating for cementious substrates, the coating desirably providing superior hot tire pickup resistance is also provided.
Abstract:
Embodiments of the invention generally relate to methods and compositions for forming conformal coatings on textured substrates. More specifically, embodiments of the invention generally relate to sol-gel processes and sol-gel compositions for forming low refractive index conformal coatings on textured transparent substrates. In one embodiment a method of forming a conformal coating on a textured glass substrate is provided. The method comprises coating the textured glass substrate with a sol-gel composition comprising a solidifier. It is believed that use of the solidifier expedites the sol-gel transition point of the sol-gel composition leading to more conformal deposition of coatings on textured substrates.
Abstract:
Polymeric composites and methods of manufacturing polymeric composites are described. In one embodiment, a set of microcapsules containing a phase change material are mixed with a dispersing polymeric material to form a first blend. The dispersing polymeric material has a latent heat of at least 40 J/g and a transition temperature in the range of 0° C. to 50° C. The first blend is processed to form a polymeric composite. The polymeric composite can be formed in a variety of shapes, such as pellets, fibers, flakes, sheets, films, rods, and so forth. The polymeric composite can be used as is or incorporated in various articles where a thermal regulating property is desired.
Abstract:
The present invention relates to a resin composition for injection including a low birefringence polymer blend, and a front panel prepared using the same, wherein 2-10 parts by weight of a fluidizing agent is added to the composition based on 100 parts by weight of the polymer blend, and the polymer blend comprises 80-90 wt % of a polycarbonate resin and 10-20 wt % of a negative birefringence polymer resin. It is possible to provide an optical panel using the resin composition for injection, wherein the optical panel is mounted on a front panel of a display such as PDP TVs, LCD TVs, borderless TVs or 3D TVs, and comprises a low birefringence polymer blend plastic resin.
Abstract:
A polyester composition produced without using an antimony compound as a polycondensation catalyst and including (I) composition containing, on a weight basis, 30 ppm or less of antimony, 0.5 to 50 ppm of titanium, and 0.1 to 100 ppm of phosphorus, in which the number density of titanium-containing particles, the equivalent circular diameter of which is 1μm or more, is less than 100/0.02 mg; and (II) a composition containing, on a weight basis, antimony, titanium and phosphorous as defined above, in which organic polymer particles are contained in amount of 0.1 to 5 wt%, the organic polymer particles having an average particle diameter determined by dynamic light scattering of 0.05 to 3μm and containing 0.01% or less of coarse particles relative to the total number of the particles, the coarse particles having a diameter at least twice the average particle diameter.
Abstract:
The present invention relates to novel molding compositions based on semicrystalline engineering thermoplastics which, in conventional processing techniques, give moldings with reduced surface gloss. A feature of the molding compositions is that they comprise, in a polymer matrix, if appropriate with the usual additives, polymer particles with a median size d50 of from 0.1 μm to 100 μm, and comprise at least one other incompatible or semicompatible polymer which has not been chemically crosslinked, and also, if appropriate, comprise salt-like additives. The invention further relates to moldings which are produced by means of conventional processing techniques, in particular via injection molding, from these matt-effect molding compositions.
Abstract:
The present invention concerns blends comprising at least one shape memory polymer and at least one thermoplastic polymer, wherein this thermoplastic polymer does not show shape memory properties. The present invention furthermore concerns methods for preparing such blends and the use of these blends in various applications, including additional products, household equipment etc.
Abstract:
A skin patch that can enhance the water resistance and handling easiness and can alleviate any irritation on the user. There is provided a skin patch having a flexible backing and, superimposed thereon, a plaster containing a styrene-isoprene-styrene block copolymer and having a glass transition temperature (Tg) of −45° to −35° C. and tan δ (lag angle) value, determined at dynamic viscoelasticity measurement (frequency 6.2832 rad/s) at 45° C., of 0.25 or less.
Abstract:
The mechanical properties of a polymer protective coating formed from an aqueous dispersion of a polymer having a low glass transition temperature are significantly improved by including in the dispersion solvent softened polymer nanoparticles made from a polymer having a high glass transition temperature.
Abstract:
The present invention relates to coating compositions containing a polymeric or copolymeric levelling agent, which has been prepared by nitroxyl-mediated polymerisation. Further aspects are a process for the preparation of smooth surface coatings and the use of said polymer or copolymer as levelling agent in coating compositions. Yet another aspect are specific ethylenically unsaturated monomer compositions from which copolymers can be obtained by atom transfer radical polymerisation or nitroxyl mediated polymerisation, which copolymers are useful as levelling agents in coating compositions. Still another aspect is the use of poly-tert.-butyl acrylate or poly-tert.butylmethacrylate as a levelling agent in powder coating compositions.