Novel high-efficiency paper enhancer

A paper reinforcing agent and high-efficiency technology, which is applied in the preparation of new high-efficiency paper reinforcing agent, in the field of papermaking with high-efficiency reinforcing agent, can solve the problems of poor secondary fiber strength, increased papermaking cost, and poor paper machine white water system, etc. To achieve the effect of improving adsorption and improving paper strength

Inactive Publication Date: 2019-03-22
苏州派凯姆新能源科技有限公司
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  • Abstract
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Problems solved by technology

[0002] Due to the regulation of the national environmental protection policy, the import of foreign waste paper is greatly restricted, and the proportion of domestic waste used as raw materials for papermaking has increased significantly. Because the national waste has not been properly sorted and classified during the recycling process, the strength of the secondary fiber has changed. In this way, the relevant indicators of paper quality provided by the fiber's own strength have dropped significantly, especially the bursting strength, folding strength, etc., in order to meet the special requirements of some paper, it is necessary to increase the amount of functional papermaking chemicals , which not only increases the cost of papermaking, but also brings a great economic burden to papermaking enterprises, and the addition of a large number of functional chemicals will also cause the white water system of the paper machine to deteriorate, further affecting papermaking

Method used

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  • Novel high-efficiency paper enhancer

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specific Embodiment example 1

[0025]In a 1L three-neck flask equipped with a stirrer, a thermometer, a reflux condenser, a constant pressure dropping funnel, and a nitrogen gas introduction tube, add 147 g of deionized water, and dissolve 200 g of acrylamide (30% aqueous solution) with 3 g of sulfuric acid (50% concentration). ), 28.5g (60% aqueous solution) methacryloxyethyltrimethylbenzyl ammonium chloride, 6.85g itaconic acid, 1.64g N-methylolacrylamide, 0.07g sodium hypophosphite, 3g polyvinylamine Adjust the pH of the mixed monomer (I) to 3, start stirring, feed nitrogen, and start to heat up. When the temperature reaches 80°C, add 0.7g ammonium persulfate. When the temperature reaches 88-90°C, start cooling and control the temperature Not exceeding 100°C, when the temperature is stable at 88-90°C, after reacting for 15 minutes, add 4g of sulfuric acid (50% content) dropwise to the reaction kettle to adjust PH=3.0, 60g of acrylamide (30% aqueous solution), 7g of deionized water , 16g (60% aqueous solu...

specific Embodiment example 2

[0027] In a 1L three-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a constant pressure dropping funnel, and a nitrogen gas inlet tube, add 159 g of deionized water, and dissolve 200 g of acrylamide (30% aqueous solution) with 3 g of sulfuric acid (50% concentration). ), 28.5g (60% aqueous solution) methacryloxyethyltrimethylbenzyl ammonium chloride, 6.85g itaconic acid, 1.64g N-methylolacrylamide, 0.07g sodium hypophosphite, polyvinylamine 6.0 The pH of the mixed monomer (I) of g is adjusted to 3, and the stirring is started, nitrogen gas is introduced, and the temperature starts to rise. When the temperature reaches 80°C, add 0.7g of ammonium persulfate, and when the temperature reaches 88-90°C, start cooling and control The temperature does not exceed 100°C. When the temperature is stabilized at 88-90°C, after 15 minutes of reaction, add 4g of sulfuric acid (50% content) dropwise to the reactor to adjust 68g of acrylamide (30% aqueous solution) and ...

specific Embodiment example 3

[0029] In a 1L three-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a constant pressure dropping funnel, and a nitrogen inlet tube, add 153 g of deionized water, and dissolve 254 g of acrylamide (30% aqueous solution) with 3 g of sulfuric acid (50% concentration). ), 9.5g (60% aqueous solution) methacryloyloxyethyltrimethylbenzyl ammonium chloride, 2.6g itaconic acid, 1.1g N-methylolacrylamide, 0.005g sodium hypophosphite, polyvinylamine 12.0 The pH of the mixed monomer (I) of g is adjusted to 3, and the stirring is started, nitrogen gas is introduced, and the temperature starts to rise. When the temperature reaches 80°C, add 0.7g of ammonium persulfate, and when the temperature reaches 88-90°C, start cooling and control The temperature does not exceed 100°C. When the temperature is stable at 88-90°C, after 15 minutes of reaction, add 4g of sulfuric acid (50% content) dropwise to the reaction kettle to adjust pH=3.0, 60g of acrylamide (30% aqueous solu...

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Abstract

With the introduction of new national environmental protection regulations, foreign waste paper import is greatly restricted, and the proportion of using national waste as papermaking raw materials isgreatly increased; the national waste is not well classified in the recycling process, so that the strength of secondary fibers is bad, and the indexes of improving the quality of the paper by the strength of the fibers are greatly reduced, especially the breaking strength and the folding strength; in order to meet special requirements of certain paper, the adding amount of functional papermakingchemicals is increased, so that the cost is increased, and the paper machine white water systems are deteriorated. In order to solve the problem, the invention discloses a novel high-efficiency paperenhancer which is composed of (meth)acrylamide, a cationic monomer, an anionic monomer and a polymer with a special structure; and the enhancer is capable of greatly improving the breaking strength and folding strength of paper under low dosage conditions.

Description

technical field [0001] The invention relates to the field of papermaking chemicals, in particular to the preparation of a novel high-efficiency paper strengthening agent and a papermaking method using the high-efficiency strengthening agent. Background technique [0002] Due to the regulation of the national environmental protection policy, the import of foreign waste paper has been greatly restricted, and the proportion of domestic waste used as raw materials for papermaking has increased significantly. Because the national waste has not been properly sorted and classified during the recycling process, the strength of the secondary fiber has changed. In this way, the relevant indicators of paper quality provided by the fiber's own strength have dropped significantly, especially the bursting strength, folding strength, etc., in order to meet the special requirements of some paper, it is necessary to increase the amount of functional papermaking chemicals , which not only inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/10C08F220/56C08F2/38C08F2/00D21H21/18
CPCC08F2/00C08F2/38C08F265/10D21H21/18C08F220/56
Inventor 轩少云张新东
Owner 苏州派凯姆新能源科技有限公司
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