Nonwoven materials binding resin, particularly for bituminous membranes bases making, preparation method thereof and non-woven material produced using said resin
SUBSTANCE: invention relates to construction and used for roofing, at floors covering, heat insulation and sound insulation, namely, to non-woven materials binding resin, particularly for bituminous membranes bases making. Non-woven materials binding resin consists of starch based aqueous solution, cross-linking agent of natural origin, selected from group of polycarboxylic acids of natural origin, and catalyst selected from group of phosphorus-containing acid alkali metals salts.
EFFECT: invention allows to create binding resin, completely consisting of natural and ecologically acceptable origin materials.
21 cl, 8 dwg, 8 tbl
SUBSTANCE: present invention relates to formaldehyde-free coating compositions. The coatings are used to endow fibrous panels and acoustic panels, such as ceiling tiles, with sag resistance. The composition includes a polyacid copolymer having at least two carboxyl groups, anhydride groups or salts thereof, a compound having a hydroxyl group, a phosphorus-containing catalyst and calcium aluminosilicate powder.
EFFECT: sag resistance, rigidity and strength of the formaldehyde-free coating.
8 cl, 1 dwg, 5 tbl, 4 ex
SUBSTANCE: invention relates to binding compositions for insulation articles based on mineral wool. Disclosed is a binding composition based on mineral felt or glass fibre, which includes at least one saccharide, at least one organic polycarboxylic acid containing 2-4 carboxylic functional groups and having molecular weight less than or equal to 1000, and at least one polyorganosiloxane containing at least one functional group capable of reacting with at least one of the components of the binding composition. The invention also discloses a sound- and/or heat-insulation article and coating made of mineral fibre, glued using the disclosed composition and a method of producing a sound- and/or heat-insulation article.
EFFECT: disclosed binding composition does not contain formaldehyde and endows insulation articles with low water absorption.
25 cl, 2 tbl, 8 ex
SUBSTANCE: invention relates to a fire-resistant thermo- and/or sound-insulating product. The fire-resistant thermo- and/or sound-insulating product is based on mineral wool, in particular an asbestos fibre or glasswool and an organic binding agent. The product contains a salt of metal and polycarboxylic acid as a fire retardant.
EFFECT: technical result of the invention consists in a uniform distribution of the fire retardant in the product.
19 cl, 8 ex, 1 tbl
SUBSTANCE: invention relates to thermoreactive polymers. Described is composite, which includes: formaldehyde-free binding substance, which includes polyvinyl alcohol and one or more linking agents for hydroxyl polymer, selected from sodium trimethaphosphate, sodium trimethaphosphate/sodium tripolyphosphate and phosphorus oxychloride, polyamide/epichlorohydrin linking agents, cyclic amide condensates, and their combinations, in which polyvinyl alcohol and one or more linking agents for hydroxyl polymer are free of aldehydes; and substrate of mineral wool, processed with water solution of binding substance. Method of obtaining claimed composite is described.
EFFECT: reducing of toxicity.
12 cl, 2 tbl, 2 ex
SUBSTANCE: invention relates to a water-soluble resin composition, a method of producing such a resin composition, use of the resin composition as binding material for non-woven fibre material, particularly insulation materials, and a method of producing such insulation material. The water-soluble resin composition contains a resin which is a product of reaction of aldehyde, preferably selected from a group including formaldehyde and (lower alkyl (C1-C4)) mono- or di-aldehydes or formaldehyde precursors, which can form formaldehyde directly in the resin composition, and a hydroxyl-aromatic compound selected from a group including substituted and unsubstituted mono- or polycyclic phenols, preferably from phenol, said composition further containing: an amino compound containing 2-6 amino groups, which is selected from a group comprising urea, dicyandiamide and melamine, and where the amino compound can also be a mixture of two or more different amino compounds; and a sugar alcohol. The resin has initial molar ratio of aldehyde to the hydroxyl-aromatic compound from 2.3 to 5.5; the ratio of the resin to the amino compound plus the sugar alcohol ranges from 45:55 to 70:30 pts.wt; the ratio of the amino compound to the resin lies between 20:80 and 50:50 pts.wt; and the ratio of the sugar alcohol to the resin plus the amino compound lies between 5:95 and 30:70 pts.wt. The sugar alcohol has a boiling point higher than the setting point of the resin.
EFFECT: obtaining a resin composition having well preserved water-solubility and without ammonia, reduced phenol and formaldehyde emissions during hardening and preservation of mechanical properties of the hardened resin, particularly wet strength.
16 cl, 2 tbl, 6 ex
FIELD: textile industry.
SUBSTANCE: disclosed is a water-base resin binder for use in inorganic fibre material, where the resin binder is obtained by reacting at least the following components in any order: (a) protein-like material which is a protein hydrolysate which is considerably soluble in water at 20°C and has viscosity of less than 50 mPa∙s for 25 wt % aqueous solution, (b) an aromatic hydroxyl compound and (c) aldehyde, and where the water-base resin binder has viscosity of less than 100 mPa∙s when measured in concentration of 50 wt % at 20°C.
EFFECT: during solidification, the obtained resin has lower release of phenols and the release of formaldehyde and ammonia is considerably lower compared to traditional resins.
15 cl, 8 ex, 13 tbl
SUBSTANCE: invention refers to the composition of water binding medium for products made of mineral fiber with increased aging resistance. Composition contains water-soluble component produced by interaction of at least one alkanolamyn with at least one carbonic acid anhydride and urea in amount 1-25% w/w calculated as hard components of composition. The ratio of components is such that the ratio of equivalents of aminogroups plus hydroxyl-groups (NH+OH) excluding urea to equivalents of carboxyl groups (COOH) in the component is in the range of about 0.6-1.5. Ratio of total amount of equivalents of aminogroups plus hydroxyl-groups (NH+OH) including urea to the equivalents of carboxyl groups (COOH) in the binding medium is between the limits x(min) and y(max) represented as
The ready water-soluble component is not mandatory treated with the alkali. The composition is used for production of glued item by bringing mineral fibers or product of mineral fibers in contact with composition of water binding medium and its subsequent hardening at temperature 225-300°C.
EFFECT: production of compositions for binding of mineral fibers with excellent hardening and durability characteristics, good water solubility and dilution resistance.
13 cl, 3 tbl, 1 dwg, 6 ex
SUBSTANCE: invention refers to the composition of water binding medium for products made of mineral fiber with increased aging resistance. Composition contains water-soluble component. The component is produced by interaction of glycerin and at least one alkanolamyn with at least one carbonic acid anhydride. The ratio of components is such that the ratio of equivalents of aminogroups plus hydroxyl-groups (NH+OH) to equivalents of carboxyl groups (COOH) in the component is in the range of about 0.4-2.0. The amount of glycerin used is such that the ratio of equivalents of glycerin OH groups to total amount of equivalents of aminogroups plus hydroxyl-groups (NH+OH) is 0.1-0.9. The ready water-soluble component is not mandatory treated with the alkali. The composition is used for production of glued item by bringing mineral fibers or product of mineral fibers in contact with composition of water binding medium and its subsequent hardening at temperature 225-300°C.
EFFECT: production of mineral fibers with excellent hardening and durability characteristics, good water solubility and dilution resistance.
14 cl, 1 tbl, 8 ex
FIELD: textile; paper.
SUBSTANCE: method to manufacture paper-resin film includes preparation of an impregnation solution by dissolving the impregnation phenol-formaldehyde resin with water to the required concentration and viscosity, addition of a soaking additive, a separating-antiadhesive additive, anti-blocking additive to prevent sticking of films. The impregnation composition contains carbonate or ammonia bicarbonate, or their mixtures - ammonium bicarbonates, in amount of 0.5-4% to mass of phenol resin.
EFFECT: improved physical and mechanical characteristics of coating based on a paper and resin film, reduced time of drying of impregnated paper base and duration of facing of veneer and other board materials.
SUBSTANCE: non-formaldehyde-containing curable aqueous composition contains polyvinyl alcohol combined with starch or modified starch or sugar, a multi-functional cross-linking agent and, optionally, a catalyst. The cross-linking agent is non-polymeric polyaldehyde, non-polymeric polyacid, salt thereof or anhydride. Nonwoven articles are obtained by bringing the composition into contact with fibrous components. Further, the mixture is cured to obtain a hard thermoset polymer.
EFFECT: composition ensures excellent strength and water resistance of the cured nonwoven article.
22 cl, 4 tbl, 15 ex
SUBSTANCE: invention relates to a foamed article made from thermoplastic polyesters. Polyester foam for making the foamed article contains thermoplastic elastomers and has characteristic viscosity greater than 1.2 dl/g. The foamed article is made using an agent which contains thermoplastic elastomers and dianhydrides of tetracarboxylic acids. The foamed article is made from polyester having a premix of thermoplastic elastomers and dianhydrides of tetracarboxylic acids which is mixed and foamed to form a foamed article. The foamed article contains thermoplastic elastomers or thermoplastic elastomers based on copolyesters in amount of 0.5-15 wt % with respect to weight of the foamed article.
EFFECT: foamed article has high homogeneity, low open porosity and high breaking elongation under shearing stress.
12 cl, 2 tbl, 7 ex
SUBSTANCE: method of producing nanocomposites involves coating nanoparticles with mean particle size from 1 nm to 100 nm with dicarboxylic acid; mixing nanoparticles coated with dicarboxylic acid with a cross-linking agent to obtain a starting mixture; mixing the starting mixture with polyester to form a polyester-based nanocomposite.
EFFECT: low crystallisation temperature and high glass-transition temperature of the nanocomposite compared to polyester.
14 cl, 7 dwg, 2 ex
FIELD: machine building.
SUBSTANCE: invention is directed to removal of bubbles from moulded item without intense overheat at moulding. Polymer material is made of composition containing solid particles of poly-ethylene or copolymer of ethylene and liquid or solid processing additive at amount from 0.05 to 1 % of total weight of polymer material. As a processing additive there is used chemical composition having temperature of melting 30-40°C below temperature of polymer material melting or boiling temperature 30-40°C higher, than maximal temperature of polymer material moulding. The additive contains at least one polyol and a reacting component. The reacting component is chosen from a group including at least one monobasic or multi-basic carbonic acid and/or at least one anhydride of said acid, or boron oxide, of boric acid.
EFFECT: improved process of hot moulding of polyethylene powders or on base of copolymer of ethylene.
12 cl, 12 dwg, 11 ex
SUBSTANCE: modifier is a mechanical mixture of molecular complexes of hexamethylene tetramine and fumaric acid and hexamethylene tetramine and maleic acid, in which the proton donor used is fumaric acid and maleic acid, taken in weight ratio hexamethylene tetramine: proton donor equal to 1:0.86.
EFFECT: proposed engineering solution enables to widen the raw material base of the rubber industry, increase the strength of the bond between rubber and textile and metallic reinforcing materials, and improve physical and mechanical properties of vulcanising agents.
3 ex, 6 tbl
SUBSTANCE: invention relates to a polyester polymer composition, preparation method thereof, as well as an article moulded from said composition, such as a film, a sheet and a thin-wall hollow container. The polymer composition contains 2-30 wt % polyamide resin (A) 69.5-97.99 wt % polyester resin (B) and 0.01-0.5 wt % polycarboxylic acid (C). The method of preparing the polymer composition involves preparation of a preliminary composition through mixture in molten state of components (A), (B) and (C) or components (A) and (C) with subsequent mixture of the preliminary composition and the polyester resin (B) in molten state. The moulded article is made by moulding the polymer composition.
EFFECT: composition is weakly-coloured and has excellent gas-barrier properties, transparency and mechanical properties of the finished product.
13 cl, 14 tbl, 34 ex
SUBSTANCE: invention can be used to purify natural water and waste water from oil refineries. The polyacrylamide-based flocculant includes polyacrylamide used in the form of an aqueous solution with molecular weight of 30 million, with hydrolysis degree of 70% and operating pH 5-11, wherein the polymer has swollen in water at room temperature for 1 day, a modifying agent - propylene glycol and water, with the following ratio of components, wt %: polyacrylamide 0.5-0.7; propylene glycol 0.15-0.3; water - the balance. To prepare the flocculant, propylene glycol is added to an aqueous polyacrylamide solution with said characteristics at room temperature while stirring in the disclosed ratio of components and then used to flocculate contaminated water.
EFFECT: flocculant provides faster and improved clarification of waste water owing to improved flocculating power of the composition of the reagent.