Unlock instant, AI-driven research and patent intelligence for your innovation.

A polyamide adhesive for card making

A polyamide and adhesive technology, which is applied in the direction of non-polymer adhesive additives, adhesives, adhesive additives, etc., can solve the problems of decreased adhesive force, poor aging performance of cards, and mutual detachment of card layers. , to achieve the effect of improving adhesion, wide applicability and enhancing cohesion

Inactive Publication Date: 2016-03-30
安同川
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since these films are polymer plastics such as PVC, solvent-based inks are used for printing patterns, so the adhesive with water as the dispersion medium does not have high adhesion on such materials or patterns, and its natural hydrophilicity In addition, it will absorb moisture during use and reduce the adhesive force of the adhesive, causing the layers of the card to separate from each other in a short time
Therefore, the aging performance of such cards is poor and the service life is short

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A polyamide adhesive for card making
  • A polyamide adhesive for card making

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of card making polyamide adhesive, its preparation method is:

[0032] (1) Preparation of modified polyamide: under a nitrogen atmosphere, 143 g of glutaric acid, 4.2 g of 2-chloro-1,5-glutaric acid, polytetrahydrofuran diol ( Molecular weight 1000) 48g, pentaerythritol 12.1g, 3-chloro-1,2-propanediol 3.6g, control the pressure in the reactor 11×10 5 Pa, the temperature is 195°C, and after 1.5 hours of reaction, the unreacted small molecule dibasic acid is distilled off under reduced pressure, and then 18g of ethylenediamine is added to control the pressure to be 11×10 5 Pa, the temperature is 195°C, after reacting for 1.5 hours, drop to normal pressure and add 200g butanone and 400g isopropanol to obtain a modified polyamide solution.

[0033] (2) Preparation of enhancer: 100 g of isopropanol was added to a container with a stirring and condenser, then 6 g of hydrophobic silica particles were added, and stirred at room temperature for 1.2 hours.

[0034] (3) A...

Embodiment 2

[0036] A kind of card making polyamide adhesive, its preparation method is:

[0037] (1) Preparation of modified polyamide: under a nitrogen atmosphere, add 101 g of adipic acid, 3.2 g of 3-chloro-1,6-hexanedioic acid, polytetrahydrofuran diol ( Molecular weight 1000) 39g, trimethylolpropane 10.3g, 3-chloro-1,2-propanediol 2.1g, control the pressure in the reactor 11×10 5 Pa, the temperature is 195°C, after 1.5 hours of reaction, the unreacted small molecule dibasic acid is distilled off under reduced pressure, and then 11g of ethylenediamine is added to control the pressure to be 11×10 5 Pa, the temperature is 195°C, after reacting for 1.5 hours, drop to normal pressure and add 300g butanone and 290g isopropanol to obtain a modified polyamide solution.

[0038] (2) Preparation of enhancer: 80 g of methyl ethyl ketone was added into a container with stirring and condenser, then 43 g of hydrophobic silicon dioxide particles were added, and stirred at room temperature for 1.2 h...

Embodiment 3

[0041] A kind of card making polyamide adhesive, its preparation method is:

[0042] (1) Preparation of modified polyamide: under nitrogen environment, add pimelic acid 167g, 2-chloro-1,5-glutaric acid 5.8g, polyester diol ( Molecular weight 1000) 62g, pentaerythritol 14.1g, 3-chloro-1,2-butanediol 4.3g, control the pressure in the reactor 11×10 5 Pa, the temperature is 195°C, and after 1.5 hours of reaction, the unreacted small molecule dibasic acid is distilled off under reduced pressure, and then 18g decanediamine is added to control the pressure to be 11×10 5 Pa, the temperature is 195°C, after reacting for 1.5 hours, drop to normal pressure and add 300g butanone and 400g isopropanol to obtain a modified polyamide solution.

[0043] (2) Preparation of enhancer: Add 110 g of isopropanol into a container with a stirring and condenser, then add 8.5 g of hydrophobic silica particles, and stir at room temperature for 1.2 hours.

[0044] (3) After uniformly mixing the modified...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a polyamide adhesive for card fabrication. The polyamide adhesive is prepared by mixing a modified polyamide solution and an enhancer, wherein the modified polyamide solution comprises the following raw materials in parts by weight: 101-167 parts of small-molecule diacid, 3.2-5.8 parts of halogen-containing diacid, 39-62 parts of micro-molecular dihydric alcohol, 10.3-14.1 parts of polyhydric alcohols, 2.1-4.3 parts of dihydric alcohol containing halogen,11-23.5 parts of diamine and 590-700 parts of solvents. According to the polyamide adhesive for card fabrication, the binding power among all layers of cards and the binding power between the card and ink patterns of cards can be effectively enhanced; the binding power can reach 11.6N / cm when the adhesive is used in fabrication of a PVC (polyvinyl chloride) card; the binding power can reach 12.7N / cm when the adhesive is used in fabrication of a PET (polyethylene terephthalate) card, the binding power can reach 12.5N / cm when the adhesive is used in fabrication of a PET card, both the initial stripping strength and aging time can be prolonged, and the binding power for different inks can also be improved by 40-50%.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, in particular to a polyamide adhesive for card making. Background technique [0002] With the continuous increase of social informatization, the application of ID cards has spread across many fields such as finance, communication, and transportation. According to statistics from the International Card Manufacturers Association (ICMA), the global card issuance volume is growing rapidly at an average annual rate of more than 15%. Since all kinds of cards on the market are made of polymer materials such as PVC and PET that use petroleum as raw materials, the rapid growth of the card market has caused certain pressure on the country's energy supply. With the increasingly tense energy supply and the popular awareness of environmental protection, adhesives with higher adhesion and aging performance, which can prolong the service life of cards, have become the focus of card manufacturers at h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J177/12C09J11/06C08G69/44
Inventor 吕拴力冯琦李华黄彦旭
Owner 安同川