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

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 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 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.