7 results about "Reactive dye" patented technology

The invention relates to a preparation method for the composite flocculant of printing and dyeing wastewater mainly treating reactive dyes, comprising the following steps: (1) reactive clay mine, flocculant and fixing agent Y are weighted according to the mass ratio of 10-50:10:0-2 and then thrown and added into the printing and dyeing wastewater; and (2) the throwing and adding sequence is firstly adding the clay mine and then the flocculant, wherein, the flocculant is thrown and added in a form of powder or liquid shape, finally, the liquid-shaped fixing agent Y with the concentration of 2g/L is added, with the rapid stirring 250r/min for 1min of the time, the slow stirring 80-100r/min for 13-8min of the time and 8min of the standing. The composite flocculant improves the printing and dyeing wastewater decolorization rate and the COD removal efficiency, simultaneously enhances the sedimentation performance and the filtration rate, and also reduces the sediment; especially, the removal rate for the reactive dyes waste liquid COD reaches over 60 percent; and the preparation process is simple, the using effect is good, and the pollution to the environment is reduced when the cost is lowered.

The invention discloses a reactive dye formula for cotton/linen blending and a preparing method thereof. The reactive dye formula for cotton/linen blending is prepared from, by weight, 57-65% of dye, 0.1-1% of peregal, 0.4-0.6% of wet rubbing fastness improver, 1-5% of fixer, 0.1-1% of ricinoleic acid butyl ester sulphate, 0.1-2% of sodium hexametaphosphate, 0.5-1% of tributyl phosphate, 2% of soda ash, 20% of sodium chloride and the balance deionized water. The components are placed in a high-speed mixer or rotary mixer according to the formula for mixing, then wet particles are obtained through extrusion conducted by means of a pelletizer with the caliber of 1 mm, drying is conducted by means of a drier, and then polyhedron particles are obtained through sieving. The reactive dye formula for cotton/linen blending and the preparing method thereof have the advantage that by the adoption of the dye, the wet rubbing fastness and fixation rate of cotton/linen blended fabric are improved effectively.

The invention belongs to the field of thermal insulation coatings, and particularly relates to a paraffin coated SiO2 color phase change microcapsule as well as a preparation method and application thereof. The paraffin coated SiO2 color phase change microcapsule takes a phase change microcapsule of silica coated paraffin as a carrier, and organic reactive dye molecules are fixed on the surface of the carrier; the phase change microcapsule with the paraffin coated with the silicon dioxide is of a core-shell structure, the paraffin serves as a microcapsule core, and the outer surface of the paraffin is coated with the silicon dioxide serving as a shell layer. The excellent ultraviolet absorption capacity of silicon dioxide and reactive dye molecules is utilized, the ultraviolet absorption capacity of a microcapsule sample is remarkably increased, the ultraviolet-proof capacity of the coating can be improved when the microcapsule is added into the interior wall coating, and due to the fact that the heat conductivity of the microcapsule is improved through a silicon dioxide inorganic shell, temperature adjustment of the coating is quicker.

The invention relates to a method for preparing a reactive dye KN-R used for fur. The method comprises condensation, refining, esterification and dilution of bromamine acid and metaposition oil; wherein dilution in the invention is improved and is carried out below 0 DEG C while the pH value is adjusted to 8.0-9.0, so that filtration efficiency and yield are improved.

The invention relates to a deep navy reactive dye fixing agent, comprising the following components by weight: 1.8-2.2 parts of AEL yellow, 26-28 parts of AEL purplish red, 139-141 parts of AEL navy, 3170-3230 parts of anhydrous sodium sulfate, 198-202 parts of sodium carbonate and 59-61 parts of sodium hydroxide. A production process comprises the following steps: mixing the AEL yellow, the AEL purplish red, the AEL navy and 40kg of water under room temperature, adding the anhydrous sodium sulfate, heating the mixture to 40 DEG C, adding the sodium carbonate 15min later, then adding the sodium hydroxide 15min later and carrying out washing and soaping 50min later. The reactive coloring agent produces less pollution, has lower production cost and is economical and practical.

The invention relates to a method for converting a traditional bath ratio reactive dye dyeing prescription into a small bath ratio reactive dye dyeing prescription. The conversion method is as the following: a. keeping a required reactive dye total amount consistent with the reactive dye total amount required in an original traditional bath ratio reactive dye dyeing prescription; b. maintaining the lower limit value of a small bath ratio salt concentration at the salt concentration of the original traditional bath ratio, and maintaining the upper limit value of the small bath ratio salt concentration at a value obtained by multiplying the salt concentration of the original traditional bath ratio by a multiplying factor, which is a ratio of the original bath ratio to the current bath ratio; c. controlling the lower limit value of a small bath ratio soda ash concentration at the soda ash concentration of the original traditional bath ratio, and controlling the upper limit value of the small bath ratio soda ash concentration at a value obtained by multiplying the soda ash concentration of the original traditional bath ratio by a multiplying factor, which is a ratio of the original bath ratio to the current bath ratio; and d. during dyeing solution preparation, first adding a neutral salt into water for dissolving, and then adding the reactive dye into the brine solution for dissolution. The method can make the dyeing depth of a fabric dyed by the small bath ratio reactive dye in accord with the dyeing depth of a fabric dyed by the traditional bath ratio reactive dye, i.e. Delta E DE is less than or equal to 1. And the conversion method is simple and fast.