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Waste paper deinking agent and preparation method thereof

A waste paper deinking and penetrating agent technology, which is applied in the processing of waste paper, chemical paint/ink remover, paper making, etc., can solve the problems of unfavorable pulp grade, unfavorable bleaching treatment, lifting, etc., and achieve less economic benefit and Effects of social and environmental benefits, improvement of effective efficiency, and simplification of technological process

Inactive Publication Date: 2015-11-25
福建希源纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing various deinking agents have different product performance due to different waste paper raw materials or their own production technology level, and the removal efficiency of ink is generally low, or some deinking agents are in production. Too much talcum powder and other inorganic fillers are added in the process, resulting in too high ash content of waste paper pulp after deinking treatment, which is not conducive to further bleaching treatment, or is not conducive to the improvement of pulp grade
At the same time, due to the continuous improvement of the quality of printing inks, many existing waste paper deinking agents can no longer meet the requirements of the existing waste paper deinking technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A waste paper deinking agent, comprising the following raw material components in parts by weight: 20 parts by weight of isophorone diisocyanate, 10 parts by weight of polyethylene glycol, 20 parts by weight of fatty alcohol polyoxyethylene ether penetrating agent, alginic acid 5 parts by weight of sodium, 12 parts by weight of attapulgite, and 50 parts by weight of water.

[0015] Its preparation method includes the following processing steps: (1) Dry the three-necked flask, stirrer, and feeding tube at 120°C for 2 hours, take it out and place it in a desiccator to cool; Add 20 parts by weight of isophorone diisocyanate, heat to 50°C, then add 20 parts by weight of fatty alcohol polyoxyethylene ether penetrating agent dropwise to the macro constant pressure dropping funnel in the instrument, keep it warm for 1.5h under stirring, and then Then add 10 parts by weight of polyethylene glycol dropwise, and after reacting for 2 hours, add 50 parts by weight of water, 5 parts...

Embodiment 2

[0017] A waste paper deinking agent, comprising the following raw material components in parts by weight: 25 parts by weight of isophorone diisocyanate, 13 parts by weight of polyethylene glycol, 25 parts by weight of fatty alcohol polyoxyethylene ether penetrating agent, alginic acid 6 parts by weight of sodium, 15 parts by weight of attapulgite, and 55 parts by weight of water.

[0018] A preparation method of waste paper deinking agent, including the following processing steps: (1) drying a three-necked flask, a stirrer, and a feeding tube at 120°C for 2 hours, taking them out and cooling them in a desiccator; 1. Add 25 parts by weight of isophorone diisocyanate to the top flask of the thermometer, heat to 53°C, then add 25 parts by weight of fatty alcohol polyoxyethylene ether penetrant to the macro constant pressure dropping funnel in the instrument, and stir Keep warm for 2.0 hours, then add 13 parts by weight of polyethylene glycol dropwise, and react for 2.5 hours, the...

Embodiment 3

[0020] A waste paper deinking agent, comprising the following raw materials in parts by weight: 28 parts by weight of isophorone diisocyanate, 13 parts by weight of polyethylene glycol, 27 parts by weight of fatty alcohol polyoxyethylene ether penetrating agent, 7 parts by weight of sodium alginate Parts by weight, attapulgite 16 parts by weight, water 58 parts by weight.

[0021] Its preparation method includes the following processing steps: (1) Dry the three-necked flask, stirrer, and feeding tube at 120°C for 2 hours, take it out and place it in a desiccator to cool; Add 28 parts by weight of isophorone diisocyanate, heat to 55°C, then add 27 parts by weight of fatty alcohol polyoxyethylene ether penetrating agent dropwise to the macro constant pressure dropping funnel in the instrument, and keep it warm for 2.0h under stirring, Then add 13 parts by weight of polyethylene glycol dropwise, and after reacting for 2.5 hours, add 58 parts by weight of water, 7 parts by weight ...

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PUM

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Abstract

The invention relates to a deinking agent, and provides a waste paper deinking agent which is good in deinking effect, environmentally friendly, nontoxic and free of strong acid and strong base. The waste paper deinking agent comprises, by weight, 20-30 parts of isophorone diisocyanate, 10-15 parts of polyethylene glycol, 20-30 parts of penetrating agents, 5-8 parts of sodium alga acid, 12-18 parts of attapulgite and 50-60 parts of water. The invention further provides a preparation method of the waste paper deinking agent. The preparation method comprises the steps that 1, an instrument is disinfected; 2, the disinfected instrument is taken out, the 20-30 parts by weight of isophorone diisocyanate is added in the instrument, temperature is increased to be 50-55 DEG C, then the penetrating agent is dropwise added in the instrument through a micro constant-pressure dropping funnel, heat is preserved for 1.5-2.0 h with stirring, then the polyethylene glycol is dropwise added, a reaction is performed for 2-2.5 h, the water, the sodium alga acid and the attapulgite are added, even stirring is performed, and therefore the waste paper deinking agent can be obtained.

Description

technical field [0001] The invention relates to a deinking agent, in particular to a waste paper deinking agent and a preparation method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection and the shrinking of social resources, the recycling of waste paper has received unprecedented attention, and various waste paper recycling technologies have emerged in an endless stream. Among them, the use of waste paper to produce high-quality living and production paper has always been the development direction of waste paper utilization technology. In the process of producing high-quality paper pulp from waste paper, necessary or sufficient deinking treatment of waste paper is a key link in the pulping process of waste paper. Since all kinds of waste paper are more or less processed by printing, especially waste papers such as waste newspapers, waste books and magazines that have been printed with ink, the ink is not easy to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04D21C5/02C08G18/75C08G18/48
CPCY02W30/64
Inventor 陈建和
Owner 福建希源纸业有限公司
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