Quaternary amino cation modified polysiloxane softening agent and preparation method thereof

A polysiloxane and cationic technology, applied in the field of softeners, can solve the problems of single softness, elasticity, low bulkiness, high yellowing, etc., and achieve the effect of excellent low hydrophobicity and improved wearability

Active Publication Date: 2009-10-28
上海氟聚化学产品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current fabric finishing agents only have a single softness, low elasticity, bulkiness and other properties, and high yellowing

Method used

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  • Quaternary amino cation modified polysiloxane softening agent and preparation method thereof
  • Quaternary amino cation modified polysiloxane softening agent and preparation method thereof
  • Quaternary amino cation modified polysiloxane softening agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A quaternary ammonium cationic modified polysiloxane softener, characterized in that the softener has the following structural formula:

[0044] A 1 BA 2

[0045]

[0046] R 4 =-CH 2 -CH 2 -CH 2 -NH 2 ;

[0047] R 3 =-CH 3 ;

[0048] The preparation method of above-mentioned quaternary ammonium cationic modified polysiloxane softening agent comprises the following steps:

[0049] (1) Mix hydroxyl silicone oils of different molecular weights and aminopropylmethyldimethoxysilane at a molar ratio of 1:2, and react at 25°C for 24 hours to obtain a siloxane intermediate, which is a hydroxylamino-sealed end, its degree of polymerization is 60;

[0050] (2) The siloxane intermediate obtained in step (1) was reacted with 2,3-epoxypropyltrimethylammonium chloride in a molar ratio of 1:2 in an isopropanol solvent for 2 hours, and the whole reaction Carried out under the protection of nitrogen, and finally vacuumized to remove part of the solvent to obtain a transp...

Embodiment 2

[0053] A quaternary ammonium cationic modified polysiloxane softener, characterized in that the softener has the following structural formula:

[0054] A 1 BA 2

[0055]

[0056] R 4 =-CH 2 -CH 2 -CH 2 -NH-CH 2 -CH 2 -NH 2

[0057] R 5 =-CH 2 -CH 3

[0058] The preparation method of above-mentioned quaternary ammonium cationic modified polysiloxane softening agent comprises the following steps:

[0059] (1) Mix hydroxyl silicone oils of different molecular weights and N-(β-aminoethyl)-γ-aminopropylmethyldiethoxysilane at a molar ratio of 1:2, and react at 105°C for 4 hours to obtain silicon oxide An alkane intermediate, the siloxane is hydroxyl-terminated, and its degree of polymerization is 100;

[0060] (2) The siloxane intermediate obtained in the step (1) is reacted with 2,3-epoxypropyltrimethylammonium chloride in a diethylene glycol monobutyl ether solvent in a molar ratio of 1:4 for 10 Hours, the whole reaction was carried out under the protection of ni...

Embodiment 3

[0063] A quaternary ammonium cationic modified polysiloxane softener, characterized in that the softener has the following structural formula:

[0064] A 1 BA 2

[0065]

[0066]

[0067] R 4 =-CH 2 -CH 2 -CH 2 -NH 2 ;

[0068] R 5 =-CH 3

[0069] The preparation method of above-mentioned quaternary ammonium cationic modified polysiloxane softening agent comprises the following steps:

[0070] (1) Mix hydroxyl silicone oils of different molecular weights and aminopropylmethyldimethoxysilane at a molar ratio of 1:1, and react at 50°C for 12 hours to obtain a siloxane intermediate. end, its degree of polymerization is 10;

[0071] (2) The siloxane intermediate obtained in step (1) was reacted with 2,3-epoxypropyltrimethylammonium chloride in a molar ratio of 1:2 in an isopropanol solvent for 5 hours. Carried out under the protection of nitrogen, and finally vacuumized to remove part of the solvent to obtain a transparent modified polysiloxane product with a vi...

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Abstract

The invention relates to a quaternary amino cation modified polysiloxane softening agent and a preparation method thereof. The structural formula of the softening agent is A1BA2. The preparation method comprises the following steps: (1) mixing hydroxy silicone oil and silane coupling agent according to a molar ratio of 1:1-1:4, and carrying out reaction on the mixture for 4 to 24 hours at the temperature of between 25 and 105 DEG C to obtain an amino terminated siloxane intermediate; (2) carrying out reaction on the amino terminated siloxane intermediate and epoxy quaternary ammonium salt for 2 to 10 hours in a solvent under the protection of nitrogen during the whole reaction, and finally vacuumizing the mixture and removing partial solvent to obtain a sticky transparent modified polysiloxane product; and (3) diluting the modified polysiloxane product by water and organic acid to obtain transparent emulsion, and adding an emulsifying agent which is 5 to 10 percent of weight of the emulsion into the emulsion to obtain a product. Compared with the prior art, the softening agent has the advantages of good softness, fluffy feeling, hydrophilicity, extremely low yellowing property, and the like.

Description

technical field [0001] The invention relates to a softener, in particular to a quaternary ammonium cationic modified polysiloxane softener and a preparation method thereof. Background technique [0002] Fabric finishing agent is one of the most important auxiliaries in the textile industry. According to incomplete statistics, in 2000, my country's annual demand for silicone fabric finishing agents was 90,000 tons. By 2005, the national annual demand for silicone fabric finishing agents had reached 140,000 tons, with an annual growth rate of more than 10%. Especially as the export of textiles increases, fabrics become increasingly high-grade, and products develop from a single variety to diversification, silicone fabric finishing agents are accelerating the development from low-grade to high-end. The current fabric finishing agents only have a single softness, low elasticity, bulkiness and other properties, and high yellowing. Contents of the invention [0003] The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643C08G77/388
Inventor 曹华斌胡逊
Owner 上海氟聚化学产品股份有限公司
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