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Preparation method of composite paper wet strength agent

A technology of wet strength agent and paper, which is applied in the direction of paper, strengthening agent addition, papermaking, etc., can solve the problems of high paper strength, high organic chlorine content, low solid content of wet strength agent, etc., and achieve high paper strength and wet strength effect Good, simple preparation steps

Active Publication Date: 2017-01-04
肇庆万隆纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation steps of the present invention are simple, the obtained wet strength agent has good wet strength effect, and the strength of the paper after use is high, and the modified bacterial liquid prepared by using the waste mushroom culture medium and the amino acid solution is used for microbial modification, and the residual organic chlorine can be effectively removed, Solved the problem of low solid content of wet strength agent and high organic chlorine content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] First, in parts by weight, 46 parts of adipic acid, 35 parts of mass fraction of 25% ethylene glycol solution, 32 parts of diethylenetriamine, 6 parts of carbonyldiimidazole, 1.3 parts of palladium carbon catalyst and 4 parts of 3-phosphoric acid Glyceric acid, first put oxalic acid, mass fraction into 25% ethylene glycol solution and carbonyldiimidazole in a four-necked flask with agitator, thermometer, reflux device and dropping funnel, then move the four-necked flask to In the oil bath, set the temperature at 90°C, and preheat at 130r / min for 30 minutes; then after the above preheating, mix the above diethylenetriamine, palladium carbon catalyst and 3-phosphoglyceric acid evenly, use drop Add the mixture dropwise to the four-necked flask with a liquid funnel at a rate of 2 drops / s. After the dropwise addition is completed, raise the temperature to 125°C, stir and react at 180r / min for 3h, and then naturally cool to room temperature. For the reaction in the four-necked...

example 2

[0018]First, in parts by weight, 50 parts of adipic acid, 37 parts of mass fraction of 25% ethylene glycol solution, 33 parts of diethylenetriamine, 7 parts of carbonyldiimidazole, 1.5 parts of palladium carbon catalyst and 5 parts of 3-phosphoric acid Glyceric acid, first put oxalic acid, mass fraction into 25% ethylene glycol solution and carbonyldiimidazole in a four-necked flask with agitator, thermometer, reflux device and dropping funnel, then move the four-necked flask to In the oil bath, set the temperature at 100°C, and preheat at 130r / min for 35 minutes; then after the above preheating, mix the above diethylenetriamine, palladium carbon catalyst and 3-phosphoglyceric acid evenly, use drop Add the mixture dropwise to the four-necked flask with a liquid funnel at a rate of 2 drops / s. After the dropwise addition is completed, raise the temperature to 128°C, stir and react at 180r / min for 5h, and then naturally cool to room temperature. For the reaction in the four-necked...

example 3

[0021] First in parts by weight, get 53 parts of adipic acid, 38 parts of mass fraction of 25% ethylene glycol solution, 34 parts of diethylenetriamine, 9 parts of carbonyldiimidazole, 1.6 parts of palladium carbon catalyst and 7 parts of 3-phosphoric acid Glyceric acid, first put oxalic acid, mass fraction into 25% ethylene glycol solution and carbonyldiimidazole in a four-necked flask with agitator, thermometer, reflux device and dropping funnel, then move the four-necked flask to In the oil bath, set the temperature at 110°C, and preheat at 130r / min for 40 minutes; then after the above preheating, mix the above-mentioned diethylenetriamine, palladium carbon catalyst and 3-phosphoglyceric acid evenly, and use dropwise Add the mixture dropwise to the four-necked flask with a liquid funnel at a rate of 2 drops / s. After the dropwise addition is completed, raise the temperature to 130°C, stir and react at 180r / min for 6h, and then naturally cool to room temperature. For the react...

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Abstract

The invention discloses a preparation method of a composite paper wet strength agent and belongs to the technical field of preparation of the composite paper wet strength agent. According to the preparation method of the composite paper wet strength agent, oxalic acid is activated by carbonyldimidazole, 3-phosphoglyceric acid serves as a modifying agent, catalytic reaction is conducted by a palladium carbon catalyst, pre-modified polyamide mixed liquid is prepared, microorganisms are extracted from a waste mushroom culture medium, epoxy chloropropane is added, free chloridions generated in the reaction process are consumed, and catalytic reaction is conducted by enzyme generated by the microorganisms, so that the composite paper wet strength agent is prepared. The preparation method of the composite paper wet strength agent has the beneficial effects that the preparation steps are simple, the obtained wet strength agent has a good wet strength effect and paper has high strength after the wet strength agent is used; and the microorganisms are modified by a modified bacterial solution prepared by utilizing the waste mushroom culture medium and an amino acid solution, so residual organochlorine can be effectively removed, the organochlorine content of the obtained wet strength agent is less than 0.09% and the solid content of the wet strength agent is more than 50.6%.

Description

technical field [0001] The invention relates to a preparation method of a composite paper wet strength agent, and belongs to the technical field of paper wet strength agent preparation. Background technique [0002] With the development of modern science and technology, the range of uses of paper is becoming wider and wider. Usually, the fiber of untreated paper loses most of its strength when it is soaked by water. If some wet strengthening agent is added to the paper, the paper still has the mechanical strength that can meet the requirements of use after being wetted by water. Wet strength agents are mainly used in the paper industry. The amount of different paper types is quite different, such as (toilet paper, fruit bag paper, cardboard, wettable water surface paper, etc.). At present, the wet strength agents used in the paper industry are mainly polyamide polyamine epichlorohydrin (PAE) resin, melamine formaldehyde (MF) resin, urea formaldehyde (UF) resin and other t...

Claims

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Application Information

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IPC IPC(8): D21H21/20D21H17/55
CPCD21H17/55D21H21/20
Inventor 雷春生邹宇帆邹玉
Owner 肇庆万隆纸业有限公司
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