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Preparing method of surface sizing agent for corrugated paper, product and application of surface sizing agent

A technology for surface sizing agent and corrugated paper, applied in paper, papermaking, paper coating and other directions, can solve the problems of high cost, large amount of sizing agent, failure to significantly improve the ring compressive strength of corrugated paper, etc. The effect of accelerating the aging speed and reducing the Cobb value

Active Publication Date: 2017-02-01
SHANGHAI DONGSHENG NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although most of the existing surface sizing agents on the market can improve the ring crush strength of corrugated paper to a certain extent, they often have the problem of large amount of sizing agent and high cost.
[0008] In the prior art, such as a sizing agent disclosed in Chinese patent CN102660899A, although the curing speed is fast and does not return to moisture, it fails to significantly improve the ring crush strength of corrugated paper

Method used

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  • Preparing method of surface sizing agent for corrugated paper, product and application of surface sizing agent
  • Preparing method of surface sizing agent for corrugated paper, product and application of surface sizing agent

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preparation example Construction

[0042] In a first aspect, a method for preparing a surface sizing agent for corrugated paper is provided, comprising the following steps:

[0043] Mix the surface sizing agent base material for corrugated paper and cationic additives evenly to obtain the surface sizing agent for corrugated paper; wherein, the usage amount of the surface sizing agent base material for corrugated paper is 100 parts by weight, and the cationic The usage amount of additive is 5~50 parts by weight;

[0044] Wherein, the preparation method of the corrugated paper surface sizing agent base material comprises the following steps:

[0045] Add cationic monomer, siloxane, (meth)acrylate monomer, (methyl)styrene, initiator, acetic acid and water into the reaction vessel to carry out free radical polymerization reaction to generate the corrugated paper surface sizing agent base;

[0046] Wherein, the preparation method of described cationic additive comprises the steps:

[0047] The alkyl ketene dimer is...

Embodiment 1

[0068] (1) Preparation of surface sizing agent base material for corrugated paper:

[0069] A) Add 100g of styrene, 20g of n-butyl acrylate, 20g of N,N-dimethylaminoethyl acrylate, and 0.3g of dibenzoyl peroxide into a container and mix well to obtain a mixed monomer for later use ;

[0070] B) Warm up 161.47g of deionized water to 80°C and set aside;

[0071] C) In a four-neck flask equipped with a condenser, dropping device, stirrer, and thermometer, first add 10% of the mixed monomer obtained in step A), raise the temperature to 80°C, stir for 10 minutes and then add step A dropwise ) for the remaining mixed monomer obtained, dropwise for 5 hours, after the dropwise addition, continue to keep warm at 80°C for 1 hour, then add 10g of acetic acid, stir and react at 80°C for 1 hour, then add the hot water in step B), and cool down After reaching 95°C, add 4g of γ-methacryloxypropyltrimethoxysilane and continue stirring for 1 hour, then cool to 35°C, pH=1.15. Filter through ...

Embodiment 2

[0079] (1) Preparation of surface sizing agent base material for corrugated paper:

[0080] A) Add 100g of methyl styrene, 100g of isooctyl acrylate, 100g of methacrylamidopropyl dimethylamine, and 5g of tert-butyl peroxybenzoate into the container and mix well to obtain a mixed monomer for later use ;

[0081] B) Warm up 1783g of deionized water to 100°C and set aside;

[0082] C) In a four-neck flask equipped with a condenser, dropping device, stirrer, and thermometer, first add 20% of the mixed monomer obtained in step A), raise the temperature to 140°C, stir for 10 minutes and then add step A dropwise ) for the remaining mixed monomer obtained, dropwise for 1 hour, after the dropwise addition, continue to keep warm at 140°C for 0.5 hour, then add 2g of acetic acid, stir and react at 140°C for 20 minutes, then add the hot water in step B), and cool down To 95°C, add 10g of vinyltriethoxysilane and continue stirring for 30 minutes, then cool to 25°C, pH=5.89. Filter throu...

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Abstract

The invention provides a preparing method of a surface sizing agent for a corrugated paper, a product and an application of the surface sizing agent. The surface sizing agent for the corrugated paper is prepared by uniformly mixing a base stock of the surface sizing agent for the corrugated paper with a cationic additive. The preparing method for the base stock of the surface sizing agent for the corrugated paper comprises the steps of adding cationic monomer, siloxane, (metyl)acrylic monomer, (metyl)styrene, an initiator, acetic acid, and water into a reaction vessel, carrying out free radical polymerization reaction to obtain the base stock of the surface sizing agent for the corrugated paper. The preparing method for the cationic additive comprises the steps of adding alkylketene dimmer into an aqueous solution of cationic emulsifier, fully stirring the solution and carrying out emulsification and dispersion to obtain the cationic additive. The surface sizing agent for the corrugated paper obtained through the method can not only cure quickly, sharply improve ring crush compression resistance of the corrugated paper and sharply reduce a COBB value, but also has a very strong anti-dampness performance.

Description

technical field [0001] The invention belongs to the field of papermaking chemicals production, and in particular relates to a preparation method of a surface sizing agent for corrugated paper, a product prepared by the preparation method, and an application of the product. Background technique [0002] Corrugated paper is a plate made of liner paper and corrugated corrugated paper formed by processing corrugated sticks. It is generally divided into two types: single corrugated board and double corrugated board. According to the size of the corrugated board, it is divided into: A, B, C , E, F five types. The invention and application of corrugated paper has a history of more than 100 years. It has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, and convenient storage and transportation. More than 80% of corrugated paper can be recycled. It can be used as packaging for food or digital products, which is relatively env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/58D21H19/46D21H19/22D21H19/74D21H17/35D21H17/37D21H17/17D21H21/16C08F212/08C08F220/18C08F220/34C08F230/08C08F220/60C08F212/12C08F220/14
CPCC08F212/08C08F212/12C08F220/18C08F220/1808C08F220/60D21H17/17D21H17/35D21H17/37D21H19/22D21H19/46D21H19/58D21H19/74D21H21/16C08F230/08C08F220/1804C08F220/34
Inventor 施晓旦尹东华
Owner SHANGHAI DONGSHENG NEW MATERIALS
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