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A UV-curable coating adhesive for textile fabrics based on multifunctional polyurethane acrylate and its preparation method and application

A polyurethane acrylate, textile fabric technology, applied in textiles and papermaking, etc., can solve the problems of low water pressure resistance, rough hand feel, high recycling cost, and achieve the effect of improving curing speed, excellent mechanical properties, and energy saving

Active Publication Date: 2022-05-20
JIANGSU LITIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the different media used in use, traditional coating adhesives are divided into two types: solvent-based and water-based. Solvent-based adhesives have the advantages of high water pressure resistance, good film-forming properties, fast drying, and low solid content. Strong resistance, rough hand feeling, high toxicity, easy to catch fire, need solvent recovery device, and high recovery cost
Compared with the solvent type, the water-based type is non-toxic, non-flammable, safe, low in cost, and does not need to be recycled. It can produce thick-coated products, which is beneficial to the production of colored coating products. The coating has good hydrophilicity; its disadvantage is low water pressure resistance, Slow drying, difficult to adhere to filament fabrics

Method used

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  • A UV-curable coating adhesive for textile fabrics based on multifunctional polyurethane acrylate and its preparation method and application
  • A UV-curable coating adhesive for textile fabrics based on multifunctional polyurethane acrylate and its preparation method and application
  • A UV-curable coating adhesive for textile fabrics based on multifunctional polyurethane acrylate and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In a 1000mL four-necked flask, 500 grams of polycaprolactone diol (Perstorp CAPA2100, molecular weight 1000), 141 grams (1mol) of isocyanate ethyl acrylate, 0.1 gram of catalyst dibutyltin dilaurate, and polymerization inhibitor p-hydroxybenzene Take 0.7 g of methyl ether, slowly heat up to 80°C-85°C for 0.5-4 hours, heat-retain, stir and react for 3-5 hours, then discharge the material to obtain a bifunctional polycaprolactone urethane acrylate with the structure shown in formula (I).

[0030]

[0031] R is: That is, the diol starter in polycaprolactone diol is neopentyl glycol; a+b=(1000-104) / 114=7.8596.

Embodiment 2

[0033] Drop into 1920 grams of anhydrous citric acid (C 6 h 8 o 7, molecular weight 192), 40 gram sodium formate, be warming up to 155 ℃, begin to drop ethylene oxide (C 2 h 4 O, molecular weight 44) 2200 grams of reaction, temperature control 155 ° C ~ 165 ° C, pressure 0.20 ~ 0.40 MPa, dropwise for 3 ~ 4 hours, after the drop is completed, 155 ° C ~ 165 ° C for 2 ~ 3 hours, and then cooled to 80 ° C The following, the crude product is obtained in discharging; after the crude product was added with 40 grams of activated clay and stirred for 30 minutes, it obtained clear and transparent tetrahydroxycitric acid polyether ester (C 16 h 28 o 12 , molecular weight 412) 4037.6 grams, structure as shown in formula (II).

[0034]

[0035] Wherein: n=2, a+b+c+d=5.

[0036] Put 206 grams of polyether tetrahydroxycitrate, 445 grams (2mol) of IPDI, and 0.2 grams of dibutyltin dilaurate into a 3000 mL four-neck flask, heat up to 60°C to 65°C, stir and keep warm for 2 to 3 hours,...

Embodiment 3

[0044] In the 3000L reactor, drop into 600 kilograms of toluene, 350 kilograms of normal hexane, ethoxylated glycerin (C 9 h 20 o 6 , molecular weight 224) 618 kilograms, 655 kilograms of acrylic acid, 8 kilograms of p-hydroxyanisole, 9 kilograms of sodium hypophosphite, 55 kilograms of methanesulfonic acid; Stirring is started, and compressed air is continuously fed into the kettle through the distributor at the bottom of the kettle, and the temperature is raised to Start reflux dehydration at 85-90°C, esterification reaction for 9-10 hours, kettle temperature 90-105°C, when reflux dehydration until no water comes out, detect acid value 25-30mgKOH / g, after the reaction is over, cool to 40°C; add 25 kg of caustic soda and 60 kg of water, stirred for 30 minutes; 6 kg of magnesium polysilicate was added, stirred and adsorbed for 30 minutes; then the water and solvent were distilled under reduced pressure at 50-95 ° C under a vacuum degree of -0.098 MPa, and the recovered water Af...

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Abstract

The invention discloses an ultraviolet light-curable coating adhesive for textile fabrics based on multifunctional polyurethane acrylate, which comprises ultraviolet light-curable resin, active diluent, photoinitiator, functional auxiliary agent and matting auxiliary agent; ultraviolet light-curable resin For 12-functionality urethane acrylate and 2-functionality urethane acrylate, the reactive diluent is a combination of ethoxylated glycerol triacrylate and PEG(400)DA. 12-functionality urethane acrylate provides high-speed curing performance, and provides good hardness and wear resistance after film formation, making the fabric wide, flat, and stylish. 2-functionality urethane acrylate provides good flexibility and adhesion after film formation. Concentrate, the reactive diluent has high activity and good flexibility, and with the photoinitiator, the curing speed of the coating adhesive is significantly improved, which is suitable for high-speed automatic production; it meets the requirements for the use of conventional textile fabric coating adhesives, and the cured product has good performance: coating The layer glue has good adhesion, excellent mechanical properties, low cost and no pollution.

Description

technical field [0001] The invention belongs to the field of textile coating adhesives, and relates to an ultraviolet curing (UV) coating adhesive for textile fabrics and its preparation method and application, in particular to a UV curing coating for textile fabrics based on multifunctional polyurethane acrylate The layer adhesive and its preparation method and application, especially relate to a UV-curable coating adhesive for textile fabrics based on 12-functionality urethane acrylate and 2-functionality urethane acrylate, as well as its preparation method and application. Background technique [0002] Coating glue, also known as textile coating finishing agent, is a polymer compound evenly coated on the surface of textile fabrics. It forms one or more layers of films on the surface of fabrics through adhesion, which can not only improve the appearance of fabrics and Style, but also can increase the function of the fabric. [0003] According to the different media used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14C08G18/67C08G18/48C08G18/42C08G18/81
CPCD06N3/144D06N3/0059C08G18/672C08G18/4833C08G18/4277C08G18/81C08G18/48
Inventor 付鹏志张丽丽胡剑飞
Owner JIANGSU LITIAN TECH
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