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

Solvent-free polyurethane adhesive for textiles, and preparation method thereof

A solvent-free polyurethane and adhesive technology, applied in the directions of adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of difficult pollutant treatment and discharge, human harm, and high content, and can solve the problem of isocyanate-based Water absorption, good flame retardancy and good reactivity

Inactive Publication Date: 2018-07-20
昆山市冠宝化学有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane adhesives were first industrialized in Germany in the 1940s, mainly including polyisocyanate solvent adhesives, thermoplastic polyurethane solvent adhesives, reactive single- and two-component solvent adhesives, solvent-free, water-dispersed, hot-melt polyurethane adhesives, etc. ; There are many types of synthetic raw materials and additives. Starting from molecular design, a series of adhesives with a wide range of performance can be synthesized and formulated, which can meet the requirements of different substrate bonding and use conditions. In the prior art, the traditional flame retardant Most of the agents are organophosphorus or halogen-containing flame retardants, but the content of free formaldehyde in the finished textiles or the content of halogen elements in the flame retardant is high, which is harmful to the human body, not environmentally friendly, and it is difficult to treat and discharge pollutants

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a solvent-free polyurethane adhesive for textiles, comprising the following steps:

[0021] (1) Under nitrogen protection, mix ammonium hexachloroiridate, nickel nitrate hydrate, cobalt nitrate, ethanol and propionic acid; Then reflux and stir for 50 minutes, then add the ammoniacal liquor that mass concentration is 20%; Reflux reaction 40 minutes; Then spin Evaporate the solvent to obtain a solid; sinter the solid at 500°C for 10 minutes, then calcinate at 650°C for 15 minutes, grind it and pass it through a 2000-mesh sieve, take the sieve and wash it until the aqueous solution after washing does not contain chloride ions and then dry Obtain functional fillers;

[0022] (2) Mixing mass concentration of 10% polyvinyl alcohol (the average molecular weight of polyvinyl alcohol is 4800) aqueous solution, tetraphenyl porphyrin iron, tert-butyl peroxybenzoate, stirred at 80°C for 3 hours, then rotary evaporated to remove water, then add hexamethylene...

Embodiment 2

[0027] A preparation method of a solvent-free polyurethane adhesive for textiles, comprising the following steps:

[0028] (1) Under nitrogen protection, mix ammonium hexachloroiridate, nickel nitrate hydrate, cobalt nitrate, ethanol and propionic acid; Then reflux and stir for 50 minutes, then add the ammoniacal liquor that mass concentration is 20%; Reflux reaction 40 minutes; Then spin Evaporate the solvent to obtain a solid; sinter the solid at 500°C for 10 minutes, then calcinate at 650°C for 15 minutes, grind it and pass it through a 2000-mesh sieve, take the sieve and wash it until the aqueous solution after washing does not contain chloride ions and then dry Obtain functional fillers;

[0029](2) Mixing mass concentration of 10% polyvinyl alcohol (the average molecular weight of polyvinyl alcohol is 4200) aqueous solution, tetraphenyl porphyrin iron, tert-butyl peroxybenzoate, stirring at 80°C for 3 hours, then rotary evaporation to remove water, then add hexamethylen...

Embodiment 3

[0034] A preparation method of a solvent-free polyurethane adhesive for textiles, comprising the following steps:

[0035] (1) Under nitrogen protection, mix ammonium hexachloroiridate, nickel nitrate hydrate, cobalt nitrate, ethanol and propionic acid; Then reflux and stir for 50 minutes, then add the ammoniacal liquor that mass concentration is 20%; Reflux reaction 40 minutes; Then spin Evaporate the solvent to obtain a solid; sinter the solid at 500°C for 10 minutes, then calcinate at 650°C for 15 minutes, grind it and pass it through a 2000-mesh sieve, take the sieve and wash it until the aqueous solution after washing does not contain chloride ions and then dry Obtain functional fillers;

[0036] (2) Mixing mass concentration of 10% polyvinyl alcohol (the average molecular weight of polyvinyl alcohol is 4800) aqueous solution, tetraphenyl porphyrin iron, tert-butyl peroxybenzoate, stirred at 80°C for 3 hours, then rotary evaporated to remove water, then add hexamethylene...

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 discloses a solvent-free polyurethane adhesive for textiles, and a preparation method thereof. The preparation method comprises the following steps: adding a functional filler into a modification system, adding ammonium thiocyanate and maleic anhydride while stirring at 60 DEG C, stirring the obtained system for 35 min, adding a basic system, stirring the obtained system at 110 DEG Cfor 85 min, and naturally the obtained system to obtain the solvent-free polyurethane adhesive for textiles. The obtained product can keep the peel strength within a long period, has no color changewhen exposed to ultraviolet rays for a long time, and has excellent flame retardancy.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a solvent-free polyurethane adhesive for textiles and a preparation method thereof. Background technique [0002] After the burning textiles come into contact with the human body, it will cause skin burns in the slightest and endanger life in severe cases. During the burning of textiles, a large amount of harmful gases released will also endanger human health, including various gases such as carbon monoxide, hydrogen cyanide and aldehydes cause death by suffocation. Polyurethane adhesives were first industrialized in Germany in the 1940s, mainly including polyisocyanate solvent adhesives, thermoplastic polyurethane solvent adhesives, reactive single- and two-component solvent adhesives, solvent-free, water-dispersed, hot-melt polyurethane adhesives, etc. ; There are many types of synthetic raw materials and additives. Starting from molecular design, a series of adhesives wit...

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
IPC IPC(8): C09J4/06C09J11/04C09J11/06C08G18/73C08G18/65C08G18/62C08G18/58C08G18/32
CPCC08G18/3206C08G18/58C08G18/6212C08G18/6517C08G18/73C09J4/06C09J11/04C09J11/06
Inventor 朱桂荣肖华明
Owner 昆山市冠宝化学有限公司