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Preparation method of waterborne polyurethane antistatic finishing agent

An antistatic finishing agent, water-based polyurethane technology, applied in the field of fabric finishing agents, can solve the problems of low rubbing fastness, easy discoloration of dyed fabrics, insufficient washing fastness, etc., and achieves durable antistatic performance, good cross-linking, The effect of good compatibility

Inactive Publication Date: 2013-05-15
CHANGSHU ZHAOSHI HUADA DYEING & FINISHING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cationic surfactants are effective antistatic agents for synthetic fibers, but such antistatic agents used in industry have the disadvantages of insufficient washing fastness, easy discoloration of dyed fabrics, and low rubbing fastness.
Most of the current polymer antistatic finishing agents are solvent-based finishing agents, which have the disadvantages of high finishing and processing costs and easy environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method of water-based polyurethane antistatic finishing agent, comprising the following process steps:

[0016] 1) Take 100 parts by weight of water, 0.9 parts by weight of antistatic agent, 0.04 parts by weight of stabilizer, and 0.75 parts by weight of antioxidant to prepare a composite additive aqueous solution;

[0017] 2) Add organic solvents N-methylpyrrolidone, isophorone diisocyanate, hexamethylene diisocyanate and a catalytic amount of dibutyltin dilaurate into a reaction kettle filled with inert gas, heat to 75°C to dissolve, and obtain a Liquid; The mass ratio of described isophorone diisocyanate, hexamethylene diisocyanate is 3:1;

[0018] 3) Dissolve the measured polyether polyol and dimethylol propionic acid in N-methylpyrrolidone to obtain liquid b;

[0019] 4) Add liquid b dropwise to liquid a, and react at 90°C for 4 hours under temperature control to obtain a prepolymerized product;

[0020] 5) Capping the obtained prepolymerized produc...

Embodiment 2

[0024] A preparation method of water-based polyurethane antistatic finishing agent, comprising the following process steps:

[0025] 1) Take 100 parts by weight of water, 0.8 parts by weight of an antistatic agent, 0.03 parts by weight of a stabilizer, and 0.07 parts by weight of an antioxidant to prepare an aqueous solution of a composite additive;

[0026] 2) Add organic solvents N-methylpyrrolidone, isophorone diisocyanate, hexamethylene diisocyanate and a catalytic amount of dibutyltin dilaurate into a reaction kettle filled with inert gas, heat to 75°C to dissolve, and obtain a Liquid; The mass ratio of described isophorone diisocyanate, hexamethylene diisocyanate is 1.5:1;

[0027] 3) Dissolve the measured polyether polyol and dimethylol propionic acid in N-methylpyrrolidone to obtain liquid b;

[0028] 4) Add liquid b dropwise to liquid a, and react at 85°C for 2 hours under temperature control to obtain a prepolymerized product;

[0029] 5) Capping the obtained prepo...

Embodiment 3

[0033] A preparation method of water-based polyurethane antistatic finishing agent, comprising the following process steps:

[0034] 1) Take 100 parts by weight of water, 1.1 parts by weight of an antistatic agent, 0.05 parts by weight of a stabilizer, and 0.85 parts by weight of an antioxidant to prepare an aqueous solution of a composite additive;

[0035] 2) Add organic solvents N-methylpyrrolidone, isophorone diisocyanate, hexamethylene diisocyanate and a catalytic amount of dibutyltin dilaurate into a reaction kettle filled with inert gas, heat to 75°C to dissolve, and obtain a Liquid; The mass ratio of described isophorone diisocyanate, hexamethylene diisocyanate is 5.5:1;

[0036] 3) Dissolve the measured polyether polyol and dimethylol propionic acid in N-methylpyrrolidone to obtain liquid b;

[0037] 4) Add liquid b dropwise to liquid a, and react at 110°C for 6 hours under temperature control to obtain a prepolymerized product;

[0038] 5) Capping the obtained prep...

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PUM

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Abstract

The invention discloses a preparation method of a waterborne polyurethane antistatic finishing agent. The preparation method comprises the following steps of: (1) preparing a compound additive water solution; (2) adding an organic solvent N-methyl pyrrolidone, isophorone diisocyanate, hexamethylene diisocyanate and dibutyltin dilaurate into a reaction kettle and heating to dissolve to obtain a solution a; (3) dissolving weighed polyether polyol and dimethylolpropionic acid into the N-methyl pyrrolidone to obtain a solution b; (4) adding the solution b into the solution a, and carrying out temperature-controlled reaction to obtain a prepolymer; (5) carrying out end capping reaction by using a saturated sodium hydrogen sulfite solution; (6) adding a triethylamine neutralizer; and (7) adding the compound additive water solution to the reaction kettle to be compounded to obtain the waterborne polyurethane antistatic finishing agent. The waterborne polyurethane antistatic finishing agent has the advantages of favorable crosslinking property, durable antistatic property, good water resistance and abrasion resistance, yellowing resistance, safety, non-toxicity, favorable compatibility and the like and is suitable for antistatic finish of fabrics, such as dacron, chinlon and acrylon.

Description

technical field [0001] The invention relates to the field of fabric finishing agents, in particular to a preparation method of a water-based polyurethane antistatic finishing agent. Background technique [0002] Most chemical fiber fabrics will generate negative charges after friction, so they need to be finished with antistatic agents. Antistatic agent is an important class of fabric finishing auxiliaries. Cationic surfactants are effective antistatic agents for synthetic fibers, but these antistatic agents used in industry have the disadvantages of insufficient washing fastness, easy discoloration of dyed fabrics, and low rubbing fastness. Most of the current polymer antistatic finishing agents are solvent-based finishing agents, which have the disadvantages of high finishing and processing costs and easy to cause environmental pollution. Contents of the invention [0003] The object of the present invention is to provide a preparation method of water-based polyurethan...

Claims

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Application Information

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IPC IPC(8): D06M15/568C08G18/83C08G18/76C08G18/73C08G18/66C08G18/48
Inventor 王恒叶
Owner CHANGSHU ZHAOSHI HUADA DYEING & FINISHING
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