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Solvent-free one-component adhesive for paper-plastic compounding and preparation method thereof

A paper-plastic composite, solvent-free technology, applied in adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve problems such as low viscosity, negative paper, glue penetration, etc., and achieve excellent coating performance Effect

Active Publication Date: 2017-06-16
BEIJING JINGDU DACHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the Chinese invention patent with the authorized notification number CN103289632B discloses a kind of one-component solvent-free polyurethane adhesive. %, polyester polyol 20-30%, polyether polyol 20-30%, although this prior art does not need volatilization of solvent, has reached the effect of energy saving and emission reduction and bonding strength is big, but because its viscosity is not high and easy There is a problem of glue penetrating into the paper, and it is easy to appear the phenomenon of negative paper

Method used

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  • Solvent-free one-component adhesive for paper-plastic compounding and preparation method thereof
  • Solvent-free one-component adhesive for paper-plastic compounding and preparation method thereof
  • Solvent-free one-component adhesive for paper-plastic compounding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A solvent-free one-component adhesive for paper-plastic composite, comprising the following components:

[0038] Pure MDI 40kg;

[0039] Liquefied MDI 10kg;

[0040] Polyoxypropylene glycol 5kg;

[0041] Polyethylene adipate 45kg;

[0042] Phosphoric acid 0.005kg.

[0043] Wherein, the molecular weight of polyoxypropylene glycol is 400-2000, and the molecular weight of polyethylene adipate is 500-2000.

[0044] The preparation method of the solvent-free one-component adhesive for paper-plastic composite is as follows:

[0045] Step 1: Add pure MDI, liquefied MDI, polyoxypropylene glycol and phosphoric acid into the reaction kettle for reaction, the reaction time is 60 minutes, and the reaction temperature is 76-80°C;

[0046] Step 2: After the reaction in step 1 is completed, polyethylene adipate is added to the reaction kettle in step 1 for reaction, the reaction time is 30 minutes, and the reaction temperature is 76-80°C;

[0047] Step 3: After the reaction in s...

Embodiment 2

[0049] A solvent-free one-component adhesive for paper-plastic composite, comprising the following components:

[0050] Isophorone diisocyanate 25kg;

[0051] Toluene diisocyanate 15kg;

[0052] Polyoxypropylene glycol 3kg;

[0053] Polyneopentyl glycol adipate 57kg;

[0054] Phosphoric acid 0.005kg.

[0055] Wherein, the molecular weight of polyoxypropylene glycol is 400-2000, and the molecular weight of polyneopentyl adipate is 500-2000.

[0056] The preparation method of the solvent-free one-component adhesive for paper-plastic composite is as follows:

[0057]Step 1: adding isophorone diisocyanate, toluene diisocyanate, polyoxypropylene glycol and phosphoric acid into the reaction kettle for reaction, the reaction time is 60 minutes, and the reaction temperature is 76-80°C;

[0058] Step 2: After the reaction in step 1 is completed, polyneopentyl glycol adipate is added to the reaction kettle in step 1 for reaction, the reaction time is 60 minutes, and the reaction te...

Embodiment 3

[0061] A solvent-free one-component adhesive for paper-plastic composite, comprising the following components:

[0062] Isophorone diisocyanate 25kg;

[0063] 1,6 hexamethylene diisocyanate 15kg;

[0064] Polyoxypropylene glycol 5kg;

[0065] Polyethylene adipate 55kg;

[0066] Benzoyl chloride 0.01kg.

[0067] Wherein, the molecular weight of polyoxypropylene diol is 400-2000, and the molecular weight of polyhexamethylene adipate is 500-2000.

[0068] The preparation method of the solvent-free one-component adhesive for paper-plastic composite is as follows:

[0069] Step 1: Add isophorone diisocyanate, 1,6 hexamethylene diisocyanate, polyoxypropylene diol and benzoyl chloride into the reaction kettle for reaction, the reaction time is 60 minutes, and the reaction temperature is 76-80°C;

[0070] Step 2: After the reaction in step 1 is completed, polyhexamethylene adipate is added to the reaction kettle in step 1 for reaction, the reaction time is 60 minutes, and the rea...

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Abstract

The invention discloses a solvent-free one-component adhesive for paper-plastic compounding. The solvent-free one-component adhesive comprises the following components by weight percent: 35%-50% of isocyanate, 2%-10% of polyether polyol, 0.001%-0.01% of a stabilizer, and 40-60% of polyester polyol. The preparation method of the solvent-free one-component adhesive for paper-plastic compounding includes: firstly adding isocyanate, polyether polyol and the stabilizer into a reaction kettle to carry out reaction at certain temperature for a period of time, then adding polyester polyol, carrying out reaction at certain temperature for a period of time, and finally conducting vacuum defoamation, thus obtaining the solvent-free one-component adhesive. The solvent-free one-component adhesive provided by the invention has high bonding strength, and at the same time the problem of glue penetration into paper is not easily generated.

Description

technical field [0001] The invention relates to the field of adhesives, more specifically, it relates to a solvent-free one-component adhesive for paper-plastic composite and a preparation method thereof. Background technique [0002] The composite method of paper-plastic composite film is mostly carried out by dry composite or extrusion composite method at this stage. For example, the Chinese invention patent with application number 93111229.X discloses a manufacturing method of a paper-plastic composite material seed bag. The first layer is a transparent plastic film, the second layer is composite base paper, the third layer is aluminum foil, and the inner layer is polyethylene, which is laminated by heating and pressing through a dry laminating machine or an extrusion laminating machine. The glue used for compounding mostly uses water-based acrylic adhesives. Although water-based acrylic adhesives are also environmentally friendly adhesives, they need to completely evapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06C08G18/48C08G18/42C08G18/10
CPCC08G18/10C08G18/4825C09J175/06C09J175/08C08G18/42
Inventor 吕嘉冬逄志玲于小刚郝慧娜
Owner BEIJING JINGDU DACHENG CHEM