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Polyurethane modified organic silicone water-repellency and antibiotic finishing agent, preparation method and application

A technology of polyurethane modification and antibacterial finishing agent, which is applied in fiber treatment, biochemical fiber treatment, and liquid repellent fibers, etc., can solve problems such as delaying spoilage time, increase self-emulsifying ability, improve water repellency effect, and improve high efficiency. The effect of antibacterial properties

Inactive Publication Date: 2017-08-18
SUZHOU YISITE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both hydroxyethylhexahydro-s-triazine and quaternary ammonium salt have high antibacterial properties, can effectively inhibit the reproduction of microorganisms, and delay the spoilage time caused by bacterial action, but these two substances are currently used to chemically modify organic silicon , and prepared as an auxiliary agent, so that the finished textiles can obtain excellent water repellency and antibacterial properties have not been reported yet

Method used

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  • Polyurethane modified organic silicone water-repellency and antibiotic finishing agent, preparation method and application
  • Polyurethane modified organic silicone water-repellency and antibiotic finishing agent, preparation method and application
  • Polyurethane modified organic silicone water-repellency and antibiotic finishing agent, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 100g of polypropylene glycol 2000, 18g of glyceryl monostearate and 38g of tetrahydrofuran solution containing 0.043g of dibutyltin dilaurate that have been dehydrated and dried into a reaction vessel equipped with a thermometer and a condensation reflux device, and turn on Stir, heat to 55°C under nitrogen atmosphere, slowly add 72g of isophorone diisocyanate dropwise within 2 to 3 hours, raise the temperature to 85°C for 3 hours after the dropwise addition, then cool down to 50°C, add 28g of isophorone diisocyanate dropwise 24g N-methyl-N-benzyl-N,N-dihydroxyethylammonium chloride and 3.7g hydroxyethylhexahydro-s-triazine solution dissolved in tetrahydrofuran, chain extension and crosslinking reaction for 3 hours, to obtain isocyanate group-terminated Polyurethane prepolymer, the -NCO content of the prepolymer measured by the di-n-butylamine method is 0.88%.

[0024] (2) In the reaction vessel, add 180g of double-ended hydroxypropyl polysiloxane 6000 dissolved...

Embodiment 2

[0027] (1) Add 75g of polypropylene glycol 1500, 13.5g of glyceryl monostearate and 27g of tetrahydrofuran solution containing 0.019g of dibutyltin dilaurate after dehydration and drying into a reaction vessel equipped with a thermometer and a condensing reflux device, Start stirring, heat to 60°C under nitrogen atmosphere, slowly add 62g of isophorone diisocyanate dropwise within 2~3 hours, after the dropwise addition, raise the temperature to 85°C and keep it warm for 3 hours, then cool down to 55°C, dropwise 27g of N-methyl-N-benzyl-N,N-dihydroxyethylammonium chloride and 3.7g of hydroxyethylhexahydro-s-triazine solution dissolved in 27g of tetrahydrofuran, chain extension and cross-linking reaction for 3 hours, to obtain isocyanate group-capped The terminal polyurethane prepolymer, the -NCO content of the prepolymer measured by the di-n-butylamine method is 1.09%.

[0028] (2) In the reaction vessel, add 190g of double-ended hydroxypropyl polysiloxane 6000 dissolved in 70g...

Embodiment 3

[0031] (1) Add 100g of polypropylene glycol 2000, 9g of glyceryl monostearate and 42g of tetrahydrofuran solution containing 0.032g of dibutyltin dilaurate that have been dehydrated and dried into a reaction vessel equipped with a thermometer and a condensation reflux device, and turn on Stir, heat to 58°C under nitrogen atmosphere, slowly add 67g of isophorone diisocyanate dropwise within 2~3 hours, raise the temperature to 80°C for 4 hours, then cool down to 55°C, dropwise add 21g of isophorone diisocyanate 30g of N-methyl-N-benzyl-N,N-dihydroxyethylammonium chloride and 3.7g of hydroxyethylhexahydro-s-triazine solution dissolved in tetrahydrofuran, chain extension and cross-linking reaction for 2 hours, to obtain isocyanate group-terminated Polyurethane prepolymer, the -NCO content of the prepolymer measured by the di-n-butylamine method is 0.97%.

[0032] (2) In the reaction vessel, add 173g of double-ended hydroxypropylpolysiloxane 5000 dissolved in 80g of tetrahydrofuran...

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Abstract

The invention discloses a polyurethane modified organic silicone water-repellency and antibiotic finishing agent, a preparation method and an application. The method comprises the following steps: adding isophorone diisocyanate into polypropylene glycol and glycerin monostearate dissolved in tetrahydrofuran and then reacting; adding N-methyl-N-benzyl-N,N-dihydroxyethyl chloride and hexahydro-1,3,5-tris-s-triazine and performing chain extension cross-linking reaction, thereby acquiring isocyanate group closed polyurethane prepolymer; reacting with double-ended hydroxypropyl polysiloxane; and removing solvents and emulsifying, thereby acquiring the polyurethane modified organic silicone water-repellency and antibiotic finishing agent used for finishing cotton and dacron / cotton textile. According to the invention, the process is simple; the introduction of long carbon chains in glycerin monostearate molecules can effectively promote the water-repellency property of the finished textile; and meanwhile, the antibacterial quaternary ammonium salt and triazine group introduced into finishing agent macromolecules can endow the finished textile with a long-lasting antimicrobial property.

Description

technical field [0001] The invention relates to the technical field of synthesis of textile printing and dyeing auxiliaries, in particular to a polyurethane-modified silicone water-repellent and antibacterial finishing agent and a preparation method thereof. Background technique [0002] With the improvement of living standards, people have put forward higher requirements for the various properties of textiles used in daily life. Some multifunctional textiles such as antibacterial, water repellent, soft and antistatic are more and more favored by people. However, at this stage, most of the textile functional finishing agents on the market are single-function products, whether they are water repellent, soft, or antibacterial. The research and development of multifunctional finishing agents will become an important development direction of the textile printing and dyeing auxiliaries industry. [0003] Silicone has a unique chemical structure. As a water-repellent agent, it can...

Claims

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Application Information

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IPC IPC(8): D06M15/568C08G18/66C08G18/48C08G18/32C08G18/12C08G18/75C08G18/61D06M101/06D06M101/32
CPCD06M15/568C08G18/12C08G18/3221C08G18/3819C08G18/3851C08G18/4825C08G18/6674C08G18/755D06M16/00D06M2101/06D06M2101/32D06M2200/12C08G18/61
Inventor 周向东易辉黄斌李福泉
Owner SUZHOU YISITE NEW MATERIAL TECH
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