Low temperature high elastic type waterproof antifouling water-based polyurethane finishing agent preparing method and product

A polyurethane and finishing agent technology, applied in the direction of anti-staining/anti-fouling fibers, textiles and papermaking, fibers repelling liquids, etc. Insufficient alkali resistance, unsatisfactory alkali resistance, etc., to achieve effective ionic strength, good waterproof and oil-proof effect, and narrow distribution effect

Active Publication Date: 2014-01-08
河北多维康助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method uses trimethylolpropane as a chain extender to introduce crosslinks into polyurethane polymers, which will inevitably lead to difficult control of the reaction process due to the rapid increase and high viscosity of the system.
In addition, the hydroxyl polysiloxane used in the formulation is also difficult to react with the isocyanate group to form an effective chemical bond with the polyurethane polymer, so the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The raw material of this preparation method comprises:

[0062] 1. Polymerized monomer

[0063] Polyether triol: 0.25mol (500.0g) of ethylene oxide / propylene oxide block copolymerized triol with a molecular weight of 2000

[0064] Polyether diol: 1.00 mol (2000.0 g) of polytetrahydrofuran diol with a molecular weight of 2000

[0065] Diisocyanate: isophorone diisocyanate 10.00mol (2220.0g)

[0066] Chain extender: non-ionic chain extender 1,4-butanediol 4.8mol (432.6g), anionic chain extender dimethylol propionic acid 2.5mol (335.3g)

[0067] 2. Modified monomer

[0068] Hydrocarbyl-terminated polysiloxane linear body: 0.45mol (900.0g) of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000

[0069] Fluorocarbon alcohol: perfluoroalkyl chain length is C 4 ~C 12 1.00mol (500.0g) of a mixture of perfluoroalkyl ethyl alcohols with an average molecular weight of 500

[0070] 3. Adjuvant

[0071] Polymerization catalyst: stannous octoate 1.65g

...

Embodiment 2

[0101] The raw material of this preparation method comprises:

[0102] 1. Polymerized monomer

[0103] Polyether triol: 0.30mol (750.0g) of polyglycerol with a molecular weight of 2500

[0104] Polyether diol: 1.10mol (2200.0g) of ethylene oxide / propylene oxide block copolymerized diol with a molecular weight of 2000

[0105] Diisocyanate: toluene diisocyanate 10.00mol (1741.6g)

[0106] Chain extender: non-ionic chain extender neopentyl glycol 4.5mol (468.7g), anionic chain extender dimethylol propionic acid 2.5mol (335.3g)

[0107] 2. Modified monomer

[0108] Hydrocarbyl-terminated polysiloxane linear body: 0.50 mol (850.0 g) of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 1700

[0109] Fluorocarbon alcohol: perfluoroalkyl chain length is C 8 Perfluorooctyl ethyl alcohol 1.10mol (510.4g)

[0110] 3. Adjuvant

[0111] Polymerization catalyst: dibutyltin dilaurate 1.92g

[0112] Reaction terminator: ethanol 148.4g

[0113] Neutralizer: Triethyl...

Embodiment 3

[0141] The raw material of this preparation method comprises:

[0142] 1. Polymerized monomer

[0143] Polyether triol: 0.25mol (750.0g) of polyglycerol with a molecular weight of 3000

[0144] Polyether diol: 0.60 mol (1200.0 g) of polyoxyethylene-terminated polypropylene glycol with a molecular weight of 2000, and 0.40 mol (800.0 g) of polytetrahydrofuran diol with a molecular weight of 2000

[0145] Diisocyanate: toluene diisocyanate 10.00mol (1741.6g)

[0146] Chain extender: non-ionic chain extender neopentyl glycol 5.1mol (531.2g), anionic chain extender dimethylol butyric acid 2.3mol (340.8g)

[0147] 2. Modified monomer

[0148] Hydrocarbyl-terminated polysiloxane linear body: 0.40mol (880.0g) of α,ω-diaminopropyl-terminated polydimethylsiloxane with a molecular weight of 2200

[0149] Fluorocarbon alcohol: perfluoroalkyl chain length is C 4 ~C 12 1.15mol (517.5g) of a mixture of perfluoroalkyl ethyl alcohols with an average molecular weight of 450

[0150] 3. A...

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Abstract

The invention relates to a low temperature high elastic type waterproof antifouling water-based polyurethane finishing agent preparing method and product. The method comprises the steps of preparing raw materials, and dewatering polyether triol and polyether diol; enabling the polyether triol and the polyether diol to be in performed reaction with end hydroxyl polysiloxane linear bodies and diisocyanate under catalysis of polymerization catalyst so as to obtain performed polymers; conducting chain extension on the performed polymers and chain extenders with the existence of diluents to obtain intermediates; conducting end capping on the intermediates and fluorine alkyl alcohol, and then adding reaction termination agents to end reaction; adding neutralizing agents, diluents, and water and emulsifying so as to obtain the low temperature high elastic type waterproof antifouling water-based polyurethane finishing agent emulsion product which is a main chain end hydroxyl polysiloxane modified ionic water-based polyurethane polymer material containing perfluorinated alkyl end groups, is used for processing of various textile coating and artificial leather dry coating, and can endow products with good waterproof antifouling performance, low-temperature high elastic characteristic and bending resistant performance.

Description

technical field [0001] The invention relates to a functional polyurethane finishing agent emulsion used for the coating of various textiles and the dry finishing process of artificial leather, in particular to a preparation method of a low-temperature high-elastic water-repellent and sewage-proof polyurethane finishing agent and its product. Background technique [0002] At present, polyurethane polymer materials are often used in the coating of various textiles and the dry finishing process of artificial leather. In order to solve the problems of traditional single-functional solvent-based polyurethane coating agents such as high pollution, low-temperature fatigue and poor functionality, the low-temperature soft, high-elastic and functional water-based paint modified by various functional monomers and block organosilane chains Polyurethane finishes are becoming mainstream products in the field of finishing. Functional waterborne polyurethane coating agents are generally pr...

Claims

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Application Information

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IPC IPC(8): C08G18/83C08G18/66C08G18/48C08G18/61C08G18/12D06M15/576
CPCC08G18/0823C08G18/12C08G18/4009C08G18/4812C08G18/4837C08G18/4841C08G18/4854C08G18/61D06M15/653D06M2200/01D06M2200/12C08G18/3206C08G18/348C08G18/2885
Inventor 权衡雷开臣章靖李新平姜会钰黎谦倪丽杰朱慧慧吴丹韩静
Owner 河北多维康助剂有限公司
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