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A technology of polyurethane resin and anti-wrinkle finishing agent, which is applied in the direction of plant fibers, etc., which can solve the problems that unblocking cannot be completed and affects the anti-wrinkle performance of thermally deblocked polyurethane resin, etc., and achieve high washing fastness, improved elasticity, and improved strength.
Active Publication Date: 2017-03-15
LIAONING FIXED STAR FINE CHEM
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[0004] Thermally decomposed polyurethane resin anti-wrinkle finishing agent is a closed polyurethane resin, that is, the isocyanate group is blocked by blocking agents such as sodiumbisulfite, ketoxime, caprolactam, and phenol. Its main weakness is that it cannot be completely unblocked. , in addition, there are residues of sealing agent, which will affect the anti-wrinkle performance of thermally decomposed polyurethane resin
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
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[0034] Add the above materials into a reaction kettle equipped with a thermometer, condenser, and agitator, heat to 85±3°C, react for 4.0 hours, add 6 parts of hydroxyethyl methacrylate, react at 85±3°C for 3.5 hours, and cool down To 30±3°C, add 10 parts of aminopropyltrimethoxysilane, react for 0.6 hours, discharge the material into a dispersing emulsification tank equipped with 9.05 parts of triethylamine and 548 parts of deionized water, stir quickly, disperse and emulsify, filter to obtain the product .
[0039] Dicyclohexylmethane diisocyanate (H 12 MDI) 118 parts
[0040] Dioxane 20 parts
[0041] Dibutyltin acetate 0.07 parts
[0042] Add the above materials into a reaction kettle equipped with a thermometer, condenser and agitator, heat to 78±3°C, react for 4.4 hours, add 9 parts of hydroxyethyl acrylate, react at 78±3°C for 4.8 hours, cool down to 30 ±3°C, add 14 parts of aminopropyltrimethoxysilane, react for 0.7 hours, discharge the material into a dispersion emulsification tank equipped with 9.15 parts of triethylamine and 670 parts of deionized water, stir quickly, disperse and emulsify, filter to obtain the product.
[0052] Add the above materials into a reaction kettle equipped with a thermometer, condenser and agitator, heat to 80±3°C, react for 3.6 hours, add 6 parts of hydroxyethyl acrylate, react at 80±3°C for 4.5 hours, cool down to 30 ±3°C, add 11 parts of aminopropyltrimethoxysilane, react for 0.8 hours, discharge the material into a dispersion emulsification tank equipped with 10.0 parts of triethylamine and 444 parts of deionized water, stir, disperse and emulsify quickly, and filter to obtain the product.
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
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Abstract
The invention relates to a preparing method for a water-based reactive polyurethane resin crease-resistant finishing agent. The preparing method is characterized by including the steps that 50-300 parts of dihydroxy-terminated polymers, 1-10 parts of trihydric alcohol compounds, 6-20 parts of dimethylolpropionic acid or dimethylolbutanoic acid, 50-150 parts of diisocyanate compounds, 10-30 parts of solvent and 0.05-0.5 part of catalyst are added into a reaction kettle and react for 3.5-4.5 h at the temperature of 70 DEG C-90 DEG C, then 2-20 parts of hydroxyethyl methylacrylate or hydroxyethyl acrylate are added and react for 3-5 h at the temperature of 70 DEG C-90 DEG C, the temperature is reduced to 20 DEG C-40 DEG C, 3-20 parts of aminopropyl trimethoxy silane are added and react for 0.5-1 h, and the reaction product is discharged into a dispersion and emulsification kettle containing 3-16 parts of triethylamine and 400-1000 parts of deionized water, fast stirred, emulsified and filtered to obtain the finishing agent. The finishing agent is particularly suitable for crease-resistant finishing of cotton fabric, polyester-cotton fabric and natural fiber fabric such as silk fabric, hemp fabric and wool fabric.
Description
technical field [0001] The invention relates to a water-based reactive polyurethane resin anti-wrinkle finishing agent and a preparation method thereof, which is an anionic polyurethane resin, and the terminal group contains a reactive group silicon hydroxyl group (-SiOH) and vinyl group (-CH=CH 2 ), under the condition of heating, it can be combined with the hydroxyl group (—OH), carboxyl group (─COOH), amino group (─NH) of cotton fiber and other natural fibers 2 ) and other active groups react to form a cross-linked network structure, which can significantly improve the wrinkle resistance of cotton fabrics. It is especially suitable for wrinkle-resistant finishing of cotton fabrics, polyester-cotton fabrics, and natural fiber fabrics such as silk, hemp, and wool. Background technique [0002] At present, most of the aldehyde-free wrinkle-free finishing agents are polycarboxylic acid compounds. For example, "Preparation of Formaldehyde-free Finishing Agent BTCA" published...
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
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