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A comb-shaped polyurethane flame-retardant water-repellent finishing agent and its preparation method and application

A technology of water-repellent finishing and polyurethane, which is applied in the direction of flame-retardant fibers, fiber treatment, and liquid-repellent fibers, etc., can solve the problems of poor water resistance, poor flame-retardant and water-repellent synergistic effects, etc., and achieve good flame-retardant effects, Excellent flame retardant and water repellent properties, cheap and easy-to-obtain raw materials

Active Publication Date: 2019-12-13
BEIJING CTA TEX CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantage of poor water resistance of the existing water-based polyurethane, the present invention introduces comb-shaped long-chain alkane into the main chain of the polyurethane molecule to achieve water repellency; at the same time introduces halogen at the end of the molecular chain to achieve flame retardant effect and solves the problem The problem of poor synergistic effect of water on the fabric, and no fluorine element is introduced into the polyurethane molecular chain, has the characteristics of safety and environmental protection

Method used

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  • A comb-shaped polyurethane flame-retardant water-repellent finishing agent and its preparation method and application
  • A comb-shaped polyurethane flame-retardant water-repellent finishing agent and its preparation method and application
  • A comb-shaped polyurethane flame-retardant water-repellent finishing agent and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Comb Polyurethane Flame Retardant Water Repellent Finishing Agent Formula

[0062]

[0063] 1. Preparation

[0064] The raw materials in the above formula are prepared according to the preparation method of the present invention to prepare a comb-shaped polyurethane flame-retardant and water-repellent finishing agent.

[0065] The specific preparation method is as follows: 1 part of dibutyltin dilaurate catalyst is diluted and dissolved with two parts of butanone, and after stirring evenly, a catalyst solution is obtained; under the protection of inert gas nitrogen, 18 mol of toluene diisocyanate and 6 mol of trimethylolpropane and 2ml of catalyst solution at 60°C for 1.5h to obtain -NCO group-terminated prepolymer I, then add 6mol of stearyl alcohol, react at 70°C for 1h for branching reaction, and obtain two -NCO groups Grouped prepolymer II; mix 82mol of toluene diisocyanate, prepolymer II, and 36mol of polyether diol 1000 (dehydrated at 120°C for 2h before use),...

Embodiment 2

[0072] Comb Polyurethane Flame Retardant Water Repellent Finishing Agent Formula

[0073]

[0074] 1. Preparation

[0075] The raw materials in the above formula are prepared according to the preparation method of the present invention to prepare a comb-shaped polyurethane flame-retardant and water-repellent finishing agent. The specific preparation method is as follows: 1 part of dibutyltin dilaurate catalyst is diluted and dissolved with two parts of butanone, and after stirring evenly, a catalyst solution is obtained; under the protection of inert gas nitrogen, 18 mol of isophorone diisocyanate and 6 mol of trihydroxy Methylpropane and 2ml of catalyst solution were reacted at 60°C for 1.5h to obtain -NCO group-terminated prepolymer I, and then 6mol of stearyl alcohol was added and reacted at 70°C for 1h for branching reaction to obtain two -NCO group prepolymer II; mix 82mol of isophorone diisocyanate, prepolymer II, and 36mol of polyether diol 1000 (dehydrated at 120°C...

Embodiment 3

[0083] Comb Polyurethane Flame Retardant Water Repellent Finishing Agent Formula

[0084]

[0085] 1. Preparation

[0086] The raw materials in the above formula are prepared according to the preparation method of the present invention to prepare a comb-shaped polyurethane flame-retardant and water-repellent finishing agent. The specific preparation method is as follows: 1 part of dibutyltin dilaurate catalyst is diluted and dissolved with two parts of butanone, and after stirring evenly, a catalyst solution is obtained; under the protection of inert gas nitrogen, 18 mol of toluene diisocyanate and 6 mol of trimethylolpropane and 2ml of catalyst solution at 60°C for 1.5h to obtain -NCO group-terminated prepolymer I, then add 6mol of stearyl alcohol, react at 70°C for 1h for branching reaction, and obtain two -NCO groups group of prepolymer II; mix 82mol of isophorone diisocyanate, prepolymer II, and 36mol of polyether diol 1000 (dehydrated at 120°C for 2h before use), and ...

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Abstract

The invention discloses a pectinate polyurethane inflaming-retarding and water-repelling finishing agent as well as a preparation method and application thereof. The structural formula of the pectinate polyurethane inflaming-retarding and water-repelling finishing agent is as shown in the following formula I, wherein a is any integer of 10 to 20; b is any integer of 5 to 15; c is any integer of 10to 20; d is any integer of 1 to 5; R1 is a residue of halogen-containing alcohol; R2 is a residue of long-chain fatty alcohol, C12 to C22 fatty alcohol; A1 is a residue of diisocyanate, A2 is a residue of small molecular polylol; A3 is a residue of soft-segment polylol; A4 is a residue of polylol containing a hydrophilic group or chain segment. The pectinate polyurethane inflaming-retarding and water-repelling finishing agent provided by the invention is used for enabling a textile to have inflaming-retarding and water-repelling functions at the same time; moreover, the inflaming-retarding and water-repelling functions do not influence each other; the price of the raw materials is low, the raw materials are easy to obtain and the pectinate polyurethane inflaming-retarding and water-repelling finishing agent has the advantage of simple preparation processing technique, is safe and environmentally friendly and is a green and high-efficiency inflaming-retarding and water-repelling finishing agent.

Description

technical field [0001] The invention belongs to the technical field of textile chemical industry, and in particular relates to a comb-shaped polyurethane flame-retardant and water-repellent finishing agent and its preparation method and application. Background technique [0002] Polyester-cotton textiles are widely used in daily wear, home textiles, and industrial protection because of their excellent wearability. However, textiles are flammable and easy to absorb water, which affects their use in some special industries (firefighting clothing, forestry protective clothing, etc.). The application of flame-retardant and water-repellent textiles is becoming more and more popular. Fluorine-containing finishing agents are usually used for water-repellent finishing of fabrics. Such water-repellent finishing agents have been banned by the European Union and the United States because they contain harmful substances such as perfluorooctane sulfonic acid (PFOS). Water-based polyuret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/568D06M15/653C08G18/76C08G18/75C08G18/72C08G18/66C08G18/61C08G18/48C08G18/38C08G18/34C08G18/32C08G18/28C08G18/10D06M101/32D06M101/06D06M101/34
CPCC08G18/10C08G18/3206C08G18/4825C08G18/724C08G18/755C08G18/7614D06M15/568D06M15/653D06M2101/06D06M2101/32D06M2101/34D06M2200/12D06M2200/30C08G18/2825C08G18/48C08G18/3275C08G18/3802C08G18/61C08G18/348
Inventor 程博陈松高殿权李翔
Owner BEIJING CTA TEX CHEM
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