摘要:
A curable binder composition consisting essentially of one or more ammonium salt of an inorganic acid and at least one carbohydrate, and the use thereof as a thermosetting binder. Also described are composite materials comprising the curable binder composition, and methods of application.
摘要:
The present invention provides water repellant curable compositions comprising (i) one or more polyacid comprising at least two carboxylic acid groups, anhydride groups, or salts thereof, (ii) one or more polyol comprising at least two hydroxyl groups, (iii) one or more reactive waterproofing agent chosen from a C5 to C30 alk(en)yl 2-hydroxyethyl (alk(en))amide, C5 to C30 alk(en)yl bis(2-hydroxyethyl)amide, C11 to C30 alk(en)yl 2-hydroxyethyl (alk(en))amine, C11 to C30 alk(en)yl bis(2-hydroxy-ethyl)amine, C11 to C30 alk(en)yl tris(2-hydroxyethyl)amine, C5 to C30 alk(en)yl monoglyceride, C5 to C30 alk(en)yl monocarboxylate of a trihydric polyol, and mixtures thereof, and, (iv), optionally, one or more phosphorous-containing accelerator, wherein the ratio of the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof to the total number of equivalents of said hydroxyl groups is from 1/0.01 to 1/3. The compositions provide concentrates dilutable with water to make thermosetting aqueous binder compositions for use in methods to treat or contact substrates chosen from a non-woven, woven and a composite, e.g. glass fiber substrates, followed by drying and curing.
摘要:
A method for preparing acid-containing polymers by reacting them in the presence of end-capped polyols or amines in the presence of phosphorous-containing compounds.
摘要:
Treated fiber substrates and methods of making and using the same are disclosed. The disclosed treated fiber substrates provide persistent, durable, broad spectrum, antimicrobial activity. The treated fiber substrates may be used in a variety of materials to impart antimicrobial activity thereto.
摘要:
The present invention provides low-cost formaldehyde-free curable aqueous compositions comprising 100 weight parts of one or more than one binder chosen from (i) mixtures of one or more than one polycarboxylic acid or polymeric polyacid and one or more than one polyol compound comprising at least two hydroxyl or epoxy groups, (ii) copolymers or copolymeric polyacids bearing carboxylic acid groups or anhydride groups and hydroxyl groups, and (iii) mixtures thereof, and 10 to 40 weight parts of one or more than one extender having an average particle size ranging from 0.5 μm or more and as high as 45 μm or less, preferably chosen from microcrystalline silica, diatomaceous silica, kaolin, bentonite, and anhydrous aluminosilicate clay delaminated. In the inventive binder compositions, the ratio of the wet over dry tensile strength of said composition is about 0.5 or greater. The present invention further provides products coated or impregnated with the binder, such as heat-resistant fiberglass nonwovens used for insulation. The aqueous binder may further comprise one or more phosphorous-containing accelerator.
摘要:
The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form: (I) 50-80% by weight of one or more weak acids; (II) 2-50% by weight of one or more strong acids; (III) 0-30% by weight of one or more monoethylenically unsaturated C4-C8 dicarboxylic acids; and (IV) 0-30% by weight of one or more monomethylenically unsaturated monomers polymerizable with (I), (II) and (III); wherein the total of monomers (I), (II), (III), and (IV) equals 100% by weight of copolymer. The invention is particularly suited to the inhibition of tripolyphosphate and pyrophosphate scales which occur as a result of using low phosphate (STPP) containing detergent formulations.
摘要:
Polycarboxylate additives suitable for use in automatic dishwasher detergent compositions are prepared by polymerizing three or more monomers including monoethylenically unsaturated C.sub.3 to C.sub.6 monocarboxylic acids such as acrylic acid, monoethylenically unsaturated C.sub.4 to C.sub.6 dicarboxylic acids such as maleic acid, and monoethylenically unsaturated esters of acrylic or methacrylic acid. Automatic dishwasher detergents prepared from these additives produce low filming and spotting on washed glassware.
摘要:
A gas turbine engine of the type generating a hot gas stream and a fan stream includes a mixer having upstream and downstream portions which define first and second chutes for efficiently mixing the streams prior to discharge through an engine nozzle. Means are provided to selectively communicate the downstream chutes with alternate ones of the upstream chutes to cool the downstream mixer portion and reduce the infrared radiation emissions from the nozzle.