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Ester soluble dual-component polyamine ester boiling-resistant plastic-aluminum composite binder and method of manufacture

A manufacturing method and technology of aluminum-plastic compounding, applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve problems such as poor high temperature resistance and inability to meet requirements

Inactive Publication Date: 2008-03-05
吉林省包装工程研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And currently existing adhesives such as: Shanghai Shenhua Technology Co., Ltd. applied for a patent called non-toxic polyurethane adhesive and its preparation, the application number is: 87104917.1, the biggest problem of this adhesive is that it has poor high temperature resistance and cannot be cooked at high temperature It maintains high-strength adhesiveness under certain conditions, so it is not suitable for high-temperature retort bags
Although Jintan Adhesive Factory has applied for a patent called polyurethane high-temperature retort bag dry composite adhesive and its manufacturing method, the application number is 99114097.4, but the problem with this adhesive is that the high-temperature retort bag made of this adhesive can be heated at 121°C. Cooking in salt water for 30 minutes does not meet the requirements of the national standard GB1004 for high-temperature cooking food packaging bags, that is, fill saturated salt water in the high-temperature cooking food packaging bags and cook at 121°C for 40 minutes

Method used

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  • Ester soluble dual-component polyamine ester boiling-resistant plastic-aluminum composite binder and method of manufacture
  • Ester soluble dual-component polyamine ester boiling-resistant plastic-aluminum composite binder and method of manufacture
  • Ester soluble dual-component polyamine ester boiling-resistant plastic-aluminum composite binder and method of manufacture

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Experimental program
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Effect test

example 1

[0029] (1) Main ingredient production

[0030] Calculated according to the weight percentage of the main agent: take

[0031] Ethylene glycol 12% is 48.6Kg

[0032] Dimethyl terephthalate 11% is 46.8Kg

[0033] Neopentyl Glycol 13% is 52.3Kg

[0034] 10% isophthalic acid is 41.6Kg

[0035] Sebacic acid 12.5% ​​is 50.6Kg

[0036] Ethyl acetate 41.5% is 164Kg

[0037] Its operation steps are:

[0038] 1. Mixing: Mix 48.6Kg of ethylene glycol and dimethyl terephthalate and heat it to 200°C±10°C for 2 hours under the action of a catalyst to produce 7Kg of methanol and ethylene terephthalate. The reaction formula is:

[0039]

[0040] Cool down to 120°C, then add 52.3Kg of neopentyl glycol, 41.6Kg of isophthalic acid, and 50.6Kg of sebacic acid and heat to 220°C±10°C for 8 hours under the action of a catalyst. Its general reaction formula is:

[0041] HOCOR 3 COOH+HOR 2 OH→HOCOR 3 COOR 2 OH+H 2 o

[0042] 2. Polycondensation: Continue to heat the previous process ...

example 2

[0056] Main agent production:

[0057] Calculated according to the weight percentage of the main agent, take

[0058] Ethylene glycol 13% 39Kg

[0059] Dimethyl terephthalate 10% 30Kg

[0060] Neopentyl Glycol 13% 39Kg

[0061] Isophthalic acid 9% 27Kg

[0062] Sebacic acid 14% 42Kg

[0063] Ethyl acetate 41% 121Kg

[0064] Its operation steps are:

[0065] mix:

[0066]1. Mix 39Kg ethylene glycol and 30Kg dimethyl terephthalate and heat it to 200°C for 2 hours under the action of a catalyst to produce 5.6Kg methanol and ethylene terephthalate. The reaction formula is:

[0067]

[0068] Cool down to 120°C, then add 39Kg of neopentyl glycol, 27Kg of isophthalic acid, and 42Kg of sebacic acid and heat to 220°C for 8 hours under the action of a catalyst. Its general reaction formula is:

[0069] HOCOR 3 COOH+HOR 2 OH→HOCOR 3 COOR 2 OH+H 2 o

[0070] 2. Polycondensation: Continue to heat the previous process to 245°C, and at the same time reduce the pressure to 1...

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Abstract

The present invention is one kind of liposoluble double component adhesive and its preparation process, and belongs to the field of fine chemical technology. The adhesive includes one main component comprising glycol, dimethyl terephthalate, neopentyl glycol, isophthalic acid, sebacic acid and ethyl acetate; and one curing agent component comprising trihydroxy methyl propane, toluene diisocyanate and ethyl acetate. The main component is prepared through mixing and reacting glycol and dimethyl terephthalate to produce glycol terephthalate, further reacting with neopentyl glycol, etc to produce polyester polyol pre-polymer, consensation to produce polyester polyol and adding ethyl acetate for dissolving and diluting. The adhesive may be applied for adhering steaming resistant aluminum plastic articles.

Description

Technical field: [0001] The invention belongs to fine chemical industry and relates to an adhesive, in particular to an ester-soluble two-component polyurethane retort-resistant aluminum-plastic composite adhesive and a manufacturing method thereof. Background technique: [0002] Two-component polyurethane adhesives are made by mixing components A and B in a certain proportion, and are the most important category of polyurethane adhesives. At present, manufacturers in the world that use dry compounding to produce composite films for food flexible packaging use polyurethane adhesives. Composite film flexible packaging has the characteristics of convenient portability, sanitation, easy storage, good barrier properties, long shelf life, easy opening, and easy quantification. The use of high-temperature retort bags can greatly extend the shelf life of food, and various flexible packaging has higher and higher requirements for adhesives for lamination. Aluminum-plastic retort-r...

Claims

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Application Information

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IPC IPC(8): C09J175/04C08J5/12
Inventor 刘喜生谢涛董云哲李明森李嘉彬杨玉新贾文光周作申
Owner 吉林省包装工程研究中心
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