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Adhesive for compounding bank card and preparation method thereof

A technology for adhesives and bank cards, applied in adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve the problems of low card production efficiency, achieve excellent adhesive performance and aging resistance, The effect of low production cost and improved production efficiency

Active Publication Date: 2013-04-03
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an adhesive for bank card compounding and its preparation method, which can be quickly compounded at a temperature lower than the softening point of the card making material when it is used for bank card compounding, thereby solving the problem that is currently used for bank card compounding. The adhesive needs to be laminated at high temperature to be bonded, resulting in the problem of low card production efficiency

Method used

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Examples

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preparation example Construction

[0021] The preparation steps of polyester polyol are specifically:

[0022] The weight ratio of each component is: 11-22 terephthalic acid, 6-12 sebacic acid, 6-11 1,2-propanediol, 2-6 ethylene glycol, stannous octoate or tetra-n-butyl titanate 0.003~0.008, triphenyl phosphite 0.006~0.016;

[0023] One-time esterification: add any one of stannous octoate or tetra-n-butyl titanate, terephthalic acid, sebacic acid, 1,2-propanediol, ethylene glycol and triphenyl phosphite to the polyester synthesis kettle , heat up to 210-230°C, react for 2-3 hours, and complete the first esterification. The acid value of the product after the first esterification is ≤15mgKOH / g;

[0024] Polycondensation reaction: After the primary esterification is completed, vacuumize the inside of the polyester synthesis tank, and pre-pump at -0.02MPa, -0.04MPa, -0.06MPa, -0.08MPa for 1 hour respectively, and control the temperature of the kettle at 245-255 ℃, then carry out long-term vacuuming operation, th...

Embodiment 1

[0045] This embodiment provides a low-temperature rapid composite adhesive for bank cards, which is prepared according to the following steps:

[0046]Preparation of the main ingredient: 100 parts by mass of terephthalic acid, 55 parts by mass of sebacic acid, 58 parts by mass of 1,2-propanediol, 16 parts by mass of ethylene glycol, tetra-n-butyl titanate, and 0.03 parts by mass and 0.06 parts by mass of triphenyl phosphite; stir well and heat up to 210-230°C, react for 3 hours, 31 parts by mass of water slip out, and the acid value measured after the primary esterification is 12 mgKOH / g; After the chemical reaction is completed, vacuumize the inside of the polyester kettle, and pre-pump at -0.02MPa, -0.04MPa, -0.06MPa, and -0.08MPa for 1 hour respectively, and control the temperature of the kettle at 245-255°C; Vacuuming operation, the vacuum degree reaches -0.1MPa, the long pumping time is 9 hours, and the distilled alcohol is 10 parts by mass; the hydroxyl value of the fina...

Embodiment 2

[0051] This embodiment provides a low-temperature rapid composite adhesive for bank cards, which is prepared according to the following steps:

[0052] Preparation of the main ingredient: 100 parts by mass of terephthalic acid, 27 parts by mass of sebacic acid, 27 parts by mass of 1,2-propanediol, 25 parts by mass of ethylene glycol, tetra-n-butyl titanate, and 0.04 parts by mass and 0.08 parts by mass of triphenyl phosphite; stir well and heat up to 210-230°C, react for 3 hours, 27 parts by mass of water slip out, and the acid value measured after the primary esterification is 15 mgKOH / g; After the chemical reaction is completed, vacuumize the inside of the polyester kettle, and pre-pump at -0.02MPa, -0.04MPa, -0.06MPa, and -0.08MPa for 1 hour respectively, and control the temperature of the kettle at 245-255°C; Vacuum operation, the vacuum degree reaches -0.1MPa, the longest pumping time is 8 hours, and the distilled alcohol is 3 parts by mass. The hydroxyl value of the fin...

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Abstract

The invention discloses an adhesive for compounding a bank card and a preparation method thereof. The adhesive is composed of a main agent and a curing agent, wherein the main agent is ethyl acetate solution containing polyester polyol and prepared from terephthalic acid, sebacic acid, 1,2-propylene glycol, glycol and ethyl acetate; the curing agent is ethyl acetate solution containing isocyanate prepolymer and synthesized from isocyanate, low molecular polyol and ethyl acetate; and the main agent and the curing agent can be directly used for rapidly compounding the identification card materials such as a bank card through a common dry compounding machine after being mixed according to certain ratio. The appearance and the peel strength of the bank card prepared from the cured product can achieve the requirement of the ISO / IEC7810:2003 international standard; and the compounding speed can be up to 30-40m / min, and the card manufacturing efficiency is improved to a great extent.

Description

technical field [0001] The invention relates to a chemical adhesive, in particular to an adhesive capable of low-temperature rapid compounding and applied to bank card making and a preparation method thereof. Background technique [0002] In recent years, with the continuous improvement of social informatization, the application of ID cards has spread across many fields such as finance, communication, and transportation. At present, the card making materials used by domestic and foreign card making enterprises are mainly PVC, PET-G, PET, ABS and so on. Among them, PVC is still the main production raw material in the card making industry because of its cheap price and mature technical equipment. General cards such as bank cards are PET / PVC / PVC / PET four-layer composite structure. Since the PVC used is a thermoplastic sheet with a Vicat softening point of 70-80°C, in order to ensure PVC in the compounding process No deformation occurs, and the traditional composite process is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C08G18/66C08G18/42C08G18/10C08G63/183C08G63/78
Inventor 隋学斌赫长生沈峰
Owner NANTONG GAOMENG NEW MATERIAL
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