Method for preparing waterproof adhesive for corrugated paper production

A technology for adhesives and corrugated paper, applied in the direction of adhesives, starch-derived adhesives, adhesive types, etc., can solve the problems of slow drying speed and low water resistance of adhesives, and achieve improved water resistance, good quick-drying characteristics, Reduce the effect of destruction

Inactive Publication Date: 2011-02-23
ZHEJIANG GREAT SHENGDA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesives described in this invention are not very water resistant and dry relatively slowly in use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the synthesis of starch-isopropenyl acetate cross-linked graft copolymer, take starch as raw material, after being mixed with the starch emulsion that mass percent concentration is 40%, take acetic acid as catalyst, take ammonium persulfate as initiator , under the condition of pH=3, slowly add 85% isopropenyl acetate monomer of starch quality dropwise to carry out graft copolymerization reaction, graft copolymerization reaction temperature is 60 ℃, graft copolymerization reaction time is 6 hours, in After the graft copolymerization reaction for 2 hours, N, N'-methylene bisacrylamide with a mass concentration of 0.2% of the starch and a mass concentration of 1% was added as a crosslinking agent to carry out the crosslinking reaction, and the addition and reaction were all carried out under stirring. The reaction product is starch-isopropenyl acetate cross-linked graft copolymer.

[0016] Using the synthesized starch-isopropenyl acetate cross-linked graft c...

Embodiment 2

[0019] The synthesis of starch-isopropenyl acetate cross-linked graft copolymer, with starch as raw material, after being mixed with the starch emulsion that mass percent concentration is 45%, with acetic acid as catalyst, with ammonium persulfate as initiator, at pH= Under the condition of 4, slowly add 90% isopropenyl acetate monomer of starch quality dropwise to carry out graft copolymerization reaction, graft copolymerization reaction temperature is 70 ℃, graft copolymerization reaction time is 5 hours, in graft copolymerization reaction After 2 hours, add N, N'-methylenebisacrylamide with a starch mass of 0.3% and a mass concentration of 1.5% as a crosslinking agent for crosslinking reaction. The addition and reaction are all carried out under stirring, and the reaction product is starch - Isopropenyl acetate cross-linked graft copolymer.

[0020] Using the synthesized starch-isopropenyl acetate cross-linked graft copolymer as the main raw material, add caustic soda with ...

Embodiment 3

[0023] The synthesis of starch-isopropenyl acetate cross-linked graft copolymer, with starch as raw material, after being mixed with the starch emulsion that mass percent concentration is 50%, with acetic acid as catalyst, with ammonium persulfate as initiator, at pH= Under the condition of 5, slowly add 95% isopropenyl acetate monomer of starch quality dropwise to carry out graft copolymerization reaction, graft copolymerization reaction temperature is 80 ℃, graft copolymerization reaction time is 4 hours, in graft copolymerization reaction After 2 hours, add N, N'-methylenebisacrylamide with a mass concentration of 0.5% of starch and a mass concentration of 2% as a crosslinking agent for crosslinking reaction. The addition and reaction are all carried out under stirring, and the reaction product is starch - Isopropenyl acetate cross-linked graft copolymer.

[0024] Using the synthesized starch-isopropenyl acetate cross-linked graft copolymer as the main raw material, add cau...

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Abstract

The invention relates to a method for preparing waterproof adhesive for corrugated paper production, and belongs to the technical field of paper coating adhesive. A starch-isopropenyl acetate cross linked graft copolymer is synthesized, and then the waterproof adhesive for the corrugated paper production is prepared. The method for preparing the waterproof adhesive for the corrugated paper production can effectively reduce the damage of water molecules to the adhesive so that the waterproof property of the adhesive is greatly improved; and because the hydrophilic property of the modified adhesive declines, the adhesive has good quick drying property and is favorable to be used on high-speed corrugated lines.

Description

technical field [0001] The invention relates to a preparation method of a water-resistant adhesive used in the production of corrugated cartons, and belongs to the technical field of paper coating adhesives. Background technique [0002] In the prior art, the surfaces of different products can be joined by adhesives. On an industrial scale, typical surfaces joined together by adhesives include paper surfaces and cardboard surfaces. In this regard, starch-based adhesive mixtures are widely used due to their simplicity of preparation, their technical features and their economically acceptable manufacturing costs. However, in actual use, there are disadvantages of poor water resistance, and the produced corrugated cardboard tends to become damp and soft, resulting in a decrease in the bond strength and edge pressure strength of the cardboard. [0003] Chinese invention patent CN200310105824.7 discloses a preparation method of quick-drying cornstarch adhesive. The method uses a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/04C08J3/24C09J9/00C08F285/00C08F251/00B31F5/04
Inventor 张治国胡开堂方能斌滕大良黄煜琪
Owner ZHEJIANG GREAT SHENGDA PACKING CO LTD
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