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A kind of washing-resistant and water-repellent synergist and preparation method and application thereof

A technology of washing resistance and synergist, applied in the direction of repelling fiber, plant fiber, fiber treatment, etc. to liquid, can solve the problem of reducing flame retardant performance, increase the degree of cross-linking, active reaction characteristics, and increase washing resistance. effect of effect

Active Publication Date: 2020-12-22
BEIJING CTA TEX CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Both patent 201410262266.3 and patent 201410556478.2 disclose a washing-resistant flame-retardant finishing agent. Although these washing-resistant finishing agents can maintain the flame-retardant performance of the washed fabric, the flame-retardant performance is still partially reduced compared with that before washing.

Method used

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  • A kind of washing-resistant and water-repellent synergist and preparation method and application thereof
  • A kind of washing-resistant and water-repellent synergist and preparation method and application thereof
  • A kind of washing-resistant and water-repellent synergist and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The formula of washing-resistant and water-repellent synergist is as follows:

[0048]

[0049] 1. Preparation

[0050] Each raw material in the above formula is prepared according to the preparation method of the present invention to obtain a washing-resistant water-repellent synergist.

[0051] The specific preparation method is:

[0052] Under the protection of inert gas nitrogen, 21mol toluene diisocyanate and 21mol diethanolamine were reacted in an ice-water bath at -5°C for 0.5h, and then heated to 50°C for another 6h to obtain an -NCO group at one end and -OH at both ends. Group branched prepolymer I, add 1mol methyl ethyl ketone oxime to prepolymer I, react at 70°C for 1 hour to obtain prepolymer II; mix 10mol isophorone diisocyanate and 1mol N-methyldiethanolamine evenly, React at 70°C for 2 hours, then add 9 mol of methyl ethyl ketone oxime, react at 60°C for 2 hours, cool down to 40°C to obtain prepolymer III with -NCO group at one end; mix prepolymer II...

Embodiment 2

[0060] The formula of washing-resistant and water-repellent synergist is as follows:

[0061]

[0062] 1. Preparation

[0063] Each raw material in the above formula is prepared according to the preparation method of the present invention to obtain a washing-resistant water-repellent synergist.

[0064] The specific preparation method is:

[0065] Under the protection of inert gas nitrogen, react 21mol hexamethylene diisocyanate and 21mol diethanolamine in -5°C ice-water bath for 0.5h, then raise the temperature to 50°C and react for 6h to obtain -NCO group at one end, and It is a branched prepolymer I with -OH group, add 1mol methyl ethyl ketone oxime to the prepolymer I, react at 70°C for 1h, and obtain the prepolymer II; mix 10mol isophorone diisocyanate, 1mol N-methyldiethanolamine Mix well, react at 70°C for 2 hours, then add 9mol methyl ethyl ketone oxime, react at 60°C for 2 hours, cool down to 40°C, and obtain prepolymer III with -NCO group at one end; mix prepoly...

Embodiment 3

[0074] The formula of washing-resistant and water-repellent synergist is as follows:

[0075]

[0076] 1. Preparation

[0077] Each raw material in the above formula is prepared according to the preparation method of the present invention to obtain a washing-resistant water-repellent synergist.

[0078] The specific preparation method is:

[0079] Under the protection of inert gas nitrogen, react 21mol hexamethylene diisocyanate and 21mol diethanolamine in -5°C ice-water bath for 0.5h, then raise the temperature to 50°C and react for 6h to obtain -NCO group at one end, and It is a branched prepolymer I with -OH group, add 1mol methyl ethyl ketone oxime to the prepolymer I, and react at 70°C for 1h to obtain the prepolymer II; mix 10mol isophorone diisocyanate, 1mol dimethylolpropane Mix the acid evenly, react at 70°C for 2 hours, then add 9 mol of methyl ethyl ketone oxime, react at 60°C for 2 hours, cool down to 40°C, and obtain prepolymer III with -NCO group at one end;...

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Abstract

The invention discloses a washing-endurance and water-repelling synergist as well as a preparation method and application thereof. A structural general formula of the washing-endurance and water-repelling synergist is shown as a formula I: the formula I is shown in the description; in the formula I, R1 is a residue of methyl ethyl ketoxime; R2 is a residue of diisocyanate and does not contain a -NCO group; R3 is a residue of polyol containing a hydrophilic group; a is an arbitrary integer in a range of 5 to 20 and b is an arbitrary integer in a range of 1 to 5. The preparation method of the washing-endurance and water-repelling synergist comprises the following steps: enabling the diisocyanate and diethanolamine to react; then raising the temperature and reacting to prepare a branched pre-polymer I; then adding the methyl ethyl ketoxime to obtain a pre-polymer II; mixing the diisocyanate, the polyol containing the hydrophilic group and the methyl ethyl ketoxime and reacting to obtain apre-polymer III with the -NCO group at one end; adding the pre-polymer III to react according to the content of residual -OH in the pre-polymer II; then regulating the pH (Potential of Hydrogen) value of a reaction system and emulsifying in sequence to obtain the washing-endurance and water-repelling synergist. A preparation process of the washing-endurance and water-repelling synergist is simpleand convenient, has no pollution to the environment and is safe and environmentally friendly; a textile can have a washing-endurance water-repelling function.

Description

technical field [0001] The invention relates to a washing-resistant water-repellent synergist as well as a preparation method and application thereof, belonging to the technical field of textile chemicals. Background technique [0002] With the development of science and technology and the deepening of research, scientific researchers have endowed textiles with more and more functions. Textiles used in daily life need to be finished to achieve their diversity, but many functions of textiles are very different before and after washing. For example, in the water repellency of textiles, the water repellency after washing can be at most 2 to 3 grades worse than the water repellency before washing. [0003] Both patent 201410262266.3 and patent 201410556478.2 disclose a washing-resistant flame-retardant finishing agent. Although these washing-resistant finishing agents can maintain the flame-retardant performance of the washed fabric, the flame-retardant performance is still par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/32C08G18/28D06M15/564D06M101/06D06M101/32
CPCC08G18/286C08G18/3275C08G18/724C08G18/755C08G18/7614D06M15/564D06M2101/06D06M2101/32D06M2200/12
Inventor 程博邓燕李翔高殿权
Owner BEIJING CTA TEX CHEM
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