Abstract: The present invention provides thermosetting aqueous binder compositions comprising one or more reducing sugar, one or more diprimary diamine or poly(primary amine), and from 7 to 45 wt. %, based on total solids, of one or more polysaccharide having a dextrose equivalent (DE) value of from 5 to 30. The compositions provide treated articles, such as fiberglass mat. The binders provide articles having a dramatically reduced binder weight loss upon cure and a reduction in cure energy needed to achieve early dry strength.

Abstract: The present invention provides stable aqueous thermosetting binder compositions having a total solids content of 15 wt. % or higher, preferably, 20 wt. % or higher, and having extended shelf life comprising one or more reducing sugar, one or more primary amine compound, and one or more stabilizer acid or salt having a pKa of 8.5 or less. The total amount of stabilizer used may range from 5 to 200 mole %, based on the total moles of primary amine present in the binder. The stabilizer may be an organic stabilizer chosen from a monocarboxylic acid, a dicarboxylic acid, a fatty acid, an acid functional fatty acid ester, an acid functional fatty acid ether, or an inorganic stabilizer chosen from a mineral acid, a mineral acid amine or ammonia salt, and a Lewis acid, and mixtures thereof. The compositions can be used to provide binders for substrate materials including, for example, glass fiber.

Abstract: The present invention provides thermosetting aqueous binder compositions comprising one or more reducing sugar, one or more diprimary diamine or poly(primary amine), and from 7 to 45 wt. %, based on total solids, of one or more polysaccharide having a dextrose equivalent (DE) value of from 5 to 30. The compositions provide treated articles, such as fiberglass mat. The binders provide articles having a dramatically reduced binder weight loss upon cure and a reduction in cure energy needed to achieve early dry strength.

Abstract: The present invention provides stable aqueous thermosetting binder compositions having a total solids content of 15 wt. % or higher, preferably, 20 wt. % or higher, and having extended shelf life comprising one or more reducing sugar, one or more primary amine compound, and one or more stabilizer acid or salt having a pKa of 8.5 or less. The total amount of stabilizer used may range from 5 to 200 mole %, based on the total moles of primary amine present in the binder. The stabilizer may be an organic stabilizer chosen from a monocarboxylic acid, a dicarboxylic acid, a fatty acid, an acid functional fatty acid ester, an acid functional fatty acid ether, or an inorganic stabilizer chosen from a mineral acid, a mineral acid amine or ammonia salt, and a Lewis acid, and mixtures thereof. The compositions can be used to provide binders for substrate materials including, for example, glass fiber.

Abstract: A composition that includes a polycarboxy oligomer or co-oligomer and a polyol.

Abstract: A seal arrangement, for example a brush seal 8? in a gas turbine engine, includes thermal matching means for matching the rates of response of a supporting ring 14?, 16? of the seal, and of a rotatable component 4 with which the seal cooperates, to thermal changes in the environment of the seal induced by changes in operating conditions. The thermal matching means may comprise a slugging mass 24 and/or thermal insulation 28. Alternatively, or in addition, the region 24 of the housing at which the seal 8? is mounted may be made from a relatively low thermal expansion material. These measures reduce the rate of expansion and contraction of the seal 8? as the temperature in the engine varies so as to match more closely the rate of expansion and contraction of a rotatable component with which the seal cooperates.

Abstract: An aqueous ink binder including 30-60%, by weight based on the dry weight of the binder composition, of a first polymer including, as polymerized units, 15-75%, by weight based on the weight of the first polymer, ethylenically unsaturated carboxylic acid monomer having a pKa from 2.0 to 4.6, the first polymer having a calculated Hansch parameter from 1.3 to 2.1, and 70-40%, by weight based on the dry weight of the binder composition, of a second polymer, the second polymer being an aqueous emulsion polymer is provided. Also provides are a clear or pigmented ink composition and a method for providing an ink which has press resolublility and, as a dry film, water resistance.

Abstract: A process for forming certain aqueous polymeric dispersions including a first emulsion polymer having an average particle diameter of 150 to 3000 nanometers and a second emulsion polymer having an average particle diameter of 40 to 600 nanometers where at least the first emulsion polymer particles, when dry, contain at least one void is provided. Also provided are the aqueous polymeric dispersions made by the process and paper or paperboard coatings and paints including the aqueous polymeric dispersions.

Abstract: The present invention comprises a rotor blade and method of manufacture thereof. The rotor blade of the present invention incorporates a number of novel features in order to increase its reliability and strength while reducing its weight. In certain embodiments, the rotor blade of the present invention incorporates a flexural strap in place of traditional pitch bearings. In certain embodiments, the rotor blade of the present invention is manufactured using a unique fiber placement layup technique to reduce failure modes and maximize the fatigue strength of the part.

Abstract: An aqueous ink binder including 30-60%, by weight based on the dry weight of the binder composition, of a first polymer including, as polymerized units, 15-75%, by weight based on the weight of the first polymer, ethylenically unsaturated carboxylic acid monomer having a pKa from 2.0 to 4.6, the first polymer having a calculated Hansch parameter from 1.3 to 2.1, and 70-40%, by weight based on the dry weight of the binder composition, of a second polymer, the second polymer being an aqueous emulsion polymer is provided. Also provides are a clear or pigmented ink composition and a method for providing an ink which has press resolublility and, as a dry film, water resistance.

Abstract: The present invention comprises a rotor blade and method of manufacture thereof. The rotor blade of the present invention incorporates a number of novel features in order to increase its reliability and strength while reducing its weight. In certain embodiments, the rotor blade of the present invention incorporates a flexural strap in place of traditional pitch bearings. In certain embodiments, the rotor blade of the present invention is manufactured using a unique fiber placement layup technique to reduce failure modes and maximize the fatigue strength of the part.

Abstract: A process for forming certain aqueous polymeric dispersions including a first emulsion polymer having an average particle diameter of 150 to 3000 nanometers and a second emulsion polymer having an average particle diameter of 40 to 600 nanometers where at least the first emulsion polymer particles, when dry, contain at least one void is provided. Also provided are the aqueous polymeric dispersions made by the process and paper or paperboard coatings and paints including the aqueous polymeric dispersions.

Abstract: A waterborne pigmented paper or paperboard coating composition containing as pigment 50% to 100%, by weight based on pigment weight, calcium carbonate and from 1% to 25%, as dry weight based on pigment weight, of an aqueous polymeric dispersion including

Abstract: A hollow sphere organic pigment in which a core containing a void is encapsulated by a first shell polymer having a glass transition temperature greater than 50.degree. C., the first shell having polymerized thereon a second shell polymer having a glass transition temperature of -15.degree. C. to -50.degree. C. is provided. Also provided is a paper or paperboard coating composition containing the hollow sphere organic pigment, a method for improving the strength and opacity of a paper or paperboard coating by using the coating composition dried, a coated paper or paperboard bearing the dried coating composition, and a method for improving the strength and opacity of paper or paperboard by incorporating a particular hollow sphere organic pigment into the formed wet sheet.