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Cationoid polyurethane and modified silicon oil composite water dispersion, preparation and applications

A cationic, polyurethane technology, applied in textiles, papermaking, fiber treatment, etc., can solve problems such as difficulty in obtaining nano-scale aqueous dispersions

Inactive Publication Date: 2008-11-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain a stable nano-scale aqueous dispersion for polyether diols with higher relative molecular weights.

Method used

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  • Cationoid polyurethane and modified silicon oil composite water dispersion, preparation and applications
  • Cationoid polyurethane and modified silicon oil composite water dispersion, preparation and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In a four-neck flask equipped with a condenser and a stirring device, add 30 g (10 mmol) of dehydrated polyether N230 and 10.7 g (48 mmol) of IPDI, and react in a water bath at 60° C. for 10 h. Add 6.54g (30mmol) CE-3 chain extender, continue to react at 60°C for 4h, add 1.0g of isopropanol to block, and react for 3h. Cool down to 40°C, add 15.0g of acetone solvent and 15.0g of polyether modified silicone oil ETS. Add 4.0g (67mmol) acetic acid for neutralization for 15min. 200 g of water was added dropwise with stirring to complete the emulsification. The solvent is removed under vacuum to obtain a composite aqueous dispersion of cationic polyurethane and modified silicone oil, with a dispersed particle diameter of 40 nm and a solid content of about 25%.

Embodiment 2

[0050] In a four-neck flask equipped with a condenser and a stirring device, add 30 g (10 mmol) of dehydrated polyether N230 and 5.3 g (24 mmol) of IPDI, and react in a water bath at 80° C. for 4.5 h. Add 2.18g (10mmol) CE-3 chain extender, continue to react at 80°C for 2h, add 1.0g of isopropanol to block, and react for 2h. Cool down to 40°C, add 10.0g of acetone solvent and 6.0g of polyether epoxy modified silicone oil ETES. Add 1.2g (20mmol) acetic acid for neutralization for 15min. 130 g of water was added dropwise with stirring to complete the emulsification. The solvent is removed under vacuum to obtain a composite aqueous dispersion of cationic polyurethane and modified silicone oil, with a dispersed particle diameter of 50 nm and a solid content of about 25%.

[0051] Other similar formulations are listed in Table 1. Reaction steps and condition are with example 2.

[0052] Table 1 Preparation of polyurethane / polymer amino silicone oil composite aqueous dispersion ...

Embodiment 9

[0055] Add 40g (10mmol) of dehydrated polyether N240 and 10.7g (48mmol) of IPDI into a four-neck flask equipped with a condenser and a stirring device, and react for 4.5h in a water bath at 80°C. Add 5.7g (30mmol) CE-2 chain extender, continue to react at 80°C for 2h, add 1.0g of isopropanol to block, and react for 2h. Cool down to 40°C, add 15.0g tetrahydrofuran solvent and 25.0g polyether modified silicone oil ETS. Add 3.60g (60mmol) acetic acid for neutralization for 15min. 200 g of water was added dropwise with stirring to complete the emulsification. The solvent is removed under vacuum to obtain a composite aqueous dispersion of cationic polyurethane and modified silicone oil, with a dispersed particle diameter of 60 nm and a solid content of about 30%.

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Abstract

The invention relates to a cationic polyurethane and modified silicone oil composite nano aqueous dispersion and a preparation method and an application thereof. The dispersion particles of the dispersion are compounded with cationic polyurethane and modified silicone oil, the diameters of the dispersion particles are less than 100nm. The mass composition of the modified silicone oil in the dispersion particles is 10 to 50 percent. High molecular weight polyether glycol and cationic diol chain extender react with isophorone diisocyanate(IPDI) to form ionic polyurethane after end capping and neutralization. The ionic polyurethane and the modified silicone oil are compounded and added with water to conduct self-emulsification at the room temperature to form the polyurethane and modified silicone oil composite nano aqueous dispersion. The nano aqueous dispersion can be used as a multifunction finishing material cotton cloth and can effectively improve the crease resistant, draping property and strength conservation rate and improve the hand feeling of fabrics and hydrophilcity and hydrophobicity of the surfaces of the fabrics.

Description

technical field [0001] The present invention relates to polymer composite water dispersion liquid and its preparation, especially a kind of cationic polyurethane and modified silicone oil composite nano water dispersion liquid and its preparation and application, this kind of composite water dispersion liquid can be used for multifunctional finishing of fabrics, to improve Anti-wrinkle, soft and strong retention of fabrics, and improve the hydrophilic and hydrophobic and antistatic properties of the surface. technical background [0002] Water-dispersible polyurethane and water-dispersible silicone oil are important fabric finishing auxiliaries, which can give fabrics good softness and certain anti-wrinkle properties, and change the hydrophilic, lipophilic and water-permeable properties of the fabric surface. Polyurethane (PU) is a segmented block polymer formed by polymerizing polyisocyanate (mainly diisocyanate) and polyol. Due to the combination of the strong polarity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/08C08L83/12C08J3/03C08G18/66C08G18/83D06M15/643D06M15/647D06M15/568
Inventor 郭睿威孙巍孙多先
Owner TIANJIN UNIV
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