摘要:
An anti-icing fluid suitable for ground treatment of aircraft, being a glycol-based solution containing a gel-forming carrageenan, in an amount of less than 5 wt %. The carrageenan is present in the glycol-based solution in an amount sufficient to thicken the fluid to promote its adherence to aircraft surfaces when applied to a stationary aircraft. Use of this thickened deicing fluid does not adversely affect airfoil lift characteristics during takeoff, because the fluid exhibits shear thinning and readily flows off the aircraft surfaces when exposed to wind shear during the aircraft's takeoff run.
摘要:
Improved vinyl halide polymer compositions containing smoke retarding amounts of copper oxalate and an amine molybdate form less smoke and have decreased flame spread on burning in the ASTM E-84 test when the compositions also contain about 5 to 15 weight parts of a Group IIA alkaline earth metal carbonate, titanium dioxide and alumunim hydrate. Improved rigid vinyl halide polymer compositions, substantially free of liquid ester type plasticizers, also containing styrene copolymer process modifiers, copolymers of ethylene and vinyl acetate and graft copolymers of methacrylates, butadiene, and styrenes (MBS) polymers, are disclosed.
摘要:
This invention is directed to a method for reducing the strength of adhesion of solid particulate materials to metal surfaces as occurs under water freezing conditions by coating the metal surface with a mixture comprising a hydrocarbon liquid which has a solidification or pour point not greater than 0°F and a saturated or unsaturated fatty acid having from about 10 to about 18 carbon atoms.
摘要:
Vinyl halide polymer compositions containing smoke retarding amounts of copper oxalate and an amine molybdate that form a carbonaceous char on burning do not exhibit char afterglow when such compositions also contain less than 20 weight parts of a Group IIA alkaline earth metal carbonate. Improved rigid vinyl halide polymer compositions, substantially free of liquid ester type plasticizers, also containing styrene copolymer process modifiers, copolymers of ethylene and vinyl acetate and graft copolymers of methacrylates, butadiene, and styrenes (MBS) polymers, are disclosed.
摘要:
Compositions which are stable in the absence of oxygen are formed by mixing the following substantially in the absence of oxygen: (A) 100 parts by weight of at least one mercapto-functional organosilicon-organic copolymer or mixtures of at least two different types of components selected from the following three types: the above copolymers, mercapto- functional organic compounds free of silicon atoms and mercapto-functional organosilicon compounds wherein all three types contain an average of at leasttwo mercapto groups per molecule; (B) 0-200 parts byweight of at least one filler; (C) a catalytic amount, preferably from 0.1 to 6 parts by weight, of an iron carbonyl catalyst selected from the group consisting of Fe(CO) 5 , Fe 2 (CO) 9 , Fe 3 (CO) 12 , dicyclopentadienyldiiron tetracarbonyl, butadieneiron tricarbonyl and cyclohexadieneiron tricarbonyl; and (D) 0.1-6 parts by weight of an acid, such as 2-ethylhexanoic acid, which meets a particular set of criteria. The compositions polymerize or cure to form higher molecular weight products at room temperature upon exposure to oxygen. These compositions are especially useful as coatings such as for paper or as electrical insulation because they possess a rapid rate of surface cure. Elastomeric sealant compositions can be prepared which rapidly become tack-free at the surface and are less prone to surface contamination by foreign matter such as dust during cure.