30results about How to "Increase hydrogen bond" patented technology

The invention relates to an ultra-fine denier polyester fiber and a preparation method thereof, and an ultra-fine denier polyester fiber. The ultra-fine denier polyester fiber mainly consists of polyester melt spinning through spinneret holes, oiling agent and high-speed It is prepared by winding; the oil agent of the oiling agent includes at least fluorine-containing polyether, and the mass of the fluorine-containing polyether is greater than or equal to 45% of the mass of the oil agent; the fluorine-containing polyether is ethylene oxide, [(1,1,2,2-tetrafluoroethoxy)methyl]random copolymer of ethylene oxide and propylene oxide, its structural formula is: the preparation method of the present invention is to measure polyester, extrude Extraction, cooling, oiling, drawing, heat setting and high-speed winding to produce ultra-fine denier polyester fibers. The ultra-fine denier polyester fiber of the present invention has excellent characteristics such as soft hand, high flexibility, soft luster, high water and oil absorption, high density, high specific surface area, high thermal insulation performance, etc., and with the development of weaving, printing and dyeing technology, its More potential features are also being discovered day by day.

The present invention relates to a compound containing polynitrophenyladamantanamine and its synthesis method. Said invention also provides its molecular formula and the concrete steps of its synthesis method.

The invention relates to an oil agent and a preparation method thereof. The oil agent at least includes fluorine-containing polyether, and the quality of the fluorine-containing polyether is greater than or equal to 45% of the quality of the oil agent; the fluorine-containing polyether is ethylene oxide, [(1 , 1,2,2-tetrafluoroethoxy) methyl] random copolymer of oxirane and propylene oxide, its structural formula is: preparation method of the present invention: starter and strong base are blended, Then heat up to 105~125°C, then add ethylene oxide, [(1,1,2,2-tetrafluoroethoxy)methyl]oxirane and propylene oxide which are mixed uniformly, under protective atmosphere Polymerization reaction to obtain fluorine-containing polyether; then, mix fluorine-containing polyether, phosphate potassium salt and sodium alkylsulfonate uniformly at room temperature, and then add the mixture to mineral oil to obtain oil agent. The invention increases the hydrogen bond in the system, the increase of the hydrogen bond is beneficial to the improvement of the cloud point, and the quality of the oil agent can be maintained while increasing the concentration of the oil agent.

A kind of nitrogen-rich fused ring compound and its derivatives of the present invention, preparation method thereof, the preparation method of nitrogen-rich condensed ring compound comprises step 1, hydrochloric acid, 1-(2H-tetrazol-5-yl ) Mix the mixed system of guanidine and BrCN uniformly; step 2, react the mixed system at room temperature for 6-48 hours, separate the products in the reaction solution, wash and dry in sequence, and obtain the nitrogen-rich condensed ring compound. Dissolve the nitrogen-rich fused ring compound in fuming nitric acid at -5-5°C for 10-60 minutes, then react at 10-25°C for 30-90 minutes, drop the reaction liquid on ice to precipitate nitrogen-rich fused-ring ammonium nitrate compound. After the compound is dissolved, an organic base and a metal base are added respectively, and the mixed system is reacted at -5-5°C for 5-15 minutes, and finally reacted at room temperature for 5-30 minutes. Organic and inorganic salts of ammonium compounds.

The present invention relates to bright warm-keeping lightness type fibers and a preparation method thereof, wherein mainly a polyester is subjected to special-shaped spinning hole melt spinning, oil agent feeding and winding so as to prepare the bright warm-keeping lightness type fibers, wherein the oil agent at least comprises a fluorine-containing polyether, the mass of the fluorine-containing polyether is more than or equal to 45% of the mass of the oil agent, the fluorine-containing polyether is a random copolymer of ethylene oxide, [(1,1,2,2-tetrafluoroethoxy)methyl]ethylene oxide and propylene oxide, and the structure formula is defined in the specification. The preparation method comprises: metering a polyester, extruding, cooling, oiling, stretching, carrying out thermal shaping, and winding so as to prepare the bright warm-keeping lightness type fibers. According to the bright warm-keeping lightness type fibers of the present invention, the fiber cross section shape is changed by the spinning while the fibers have the hollowness, the air permeability and the thermal insulation property are increased, and with the special cross section shape of the fibers, the bright surface light refraction effect is provided so as to make the fabric bright and gorgeous; and the fibers further have characteristics of lightness, light weight, and soft touch feeling.

The invention discloses a melt-solid phase polycondensation preparation new type biodegradation material containing hydrogen bond poly lactic acid-L-lactic acid and amino acid copolymer method. It includes the following steps that the first is melt polycondensation; the raw material L-lactic acid is decompression dehydration, added into amino acid, catalyst to do condensation and polymerization. The second is solid phase polymerization; pre-polymer is crashed, and to do solid phase polymerization at the condition of molecular sieve existence. Because of the whole technique does not use solvent, the lactic acid and amino acid with higher molecular weight can be made with low cost.

The invention relates to a method for improving the indigo dyeing wet rubbing color fastness of cellulosic fibers. The objective of the invention is to overcome the problem of low wet rubbing color fastness of cowboy wear in the prior art. The method comprises the following steps: 1, rapid concentrated-alkali treatment of cellulosic fibers; 2, rapid formylation of the surfaces of cellulosic fibers; and 3, rapid graft modification of the formylated cellulosic fibers with an aqueous solution of taurine. According to the invention, the sulfonic acid group-modified cellulosic fibers have wet rubbing color fastness of grade 4, meeting the requirement that the grade wet rubbing color fastness should be no less than 3 as prescribed in national standards in China. The method of the invention is applied to the field of cellulosic fiber dyeing.

The invention relates to a coarse-denier porous polyester fiber and a preparation method thereof. The coarse-denier porous polyester fiber is mainly prepared by melt-spinning, oiling, stretching and winding of polyester through a number of spinneret holes; The oil agent of the oiling agent includes at least fluorine-containing polyether, and the quality of the fluorine-containing polyether ≥ 45% of the quality of the oil agent; the fluorine-containing polyether is ethylene oxide, [(1,1, 2,2-tetrafluoroethoxy) methyl] random copolymer of oxirane and propylene oxide, its structural formula is: the preparation method of the present invention is that polyester is measured, extruded, cooled, oiled And high-speed winding, made coarse denier porous polyester fiber. The coarse denier porous polyester fiber of the present invention endows the polyester fiber with a soft and elegant silk light feeling, not only has excellent optical properties, but due to the large number of fibers, the arrangement between the fibers cannot be tight, and the gaps increase accordingly, thereby The fabric feels thicker, with better fluffiness and air permeability.

The invention discloses a snow-melting agent. The snow-melting agent comprises following components by weight: 30-60% of low-molecular organic polyol, 0.8-1.2% of triethanolamine, 0.1-1% of a metal ion chelate or salts thereof, 0.2-0.4% of sodium metasilicate, 0.1-1% of benzotriazole, 0.2-0.5% of sodium dihydrogen phosphate, and 30-70% of water. The snow-melting agent adopts a formula combining an organic phase and an inorganic phase, and comprises a mixture of two or three compounds selected from glycol, propylene glycol and ethanol, and a composite corrosion inhibitor including the water, the triethanolamine, the metal ion chelate or the salts thereof, the sodium metasilicate, the benzotriazole and the sodium dihydrogen phosphate. The freezing point of the snow-melting agent is below -40 DEG C, and the snow-melting agent has significant ice and snow melting effects.