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Preparation and application of N-methyl piperazinyl silane coupling agent

A technology based on silane coupling agent and methylpiperazine, which is applied in the field of organosilicon fine chemicals, can solve the problems of high requirements, easy yellowing, and affecting the effect of taking, and achieve good anti-pilling performance and good hydrophilicity , good resilience effect

Active Publication Date: 2014-01-01
上海硅普化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ①Under the action of light and heat, it is easy to turn yellow;
[0005] ②Natural fibers lose their hydrophilicity, which affects the effect of taking;
[0006] ③ Resilience, smoothness and washability cannot meet the needs
[0007] The amino polyether block silicone oil currently on the market can avoid most of the defects and deficiencies of the above-mentioned aminoethylaminopropyl polysiloxane, but the resilience, washability, and fluffy feeling cannot meet the multi-level functions of special fabrics. high demands

Method used

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  • Preparation and application of N-methyl piperazinyl silane coupling agent
  • Preparation and application of N-methyl piperazinyl silane coupling agent
  • Preparation and application of N-methyl piperazinyl silane coupling agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the preparation of N-methylpiperazinyl silane coupling agent

[0034] The specific route for the preparation of the N-methylpiperazinyl polysiloxane involved in this embodiment is as follows:

[0035] (1) Use N-methylpiperazine and chloropropylmethyldimethoxysilane as main raw materials to prepare N-methylpiperazinylpropylmethyldimethoxysilane, namely N-methylpiperazine base silane coupling agent; by-product is N-methylpiperazine hydrochloride, and the reaction equation is as follows:

[0036]

[0037] Wherein, the dosages of N-methylpiperazine and chloropropylmethyldimethoxysilane are shown in Table 1.

[0038] The N-methylpiperazinylsilane coupling agent prepared in this example is used to prepare fabric softening and finishing agents, polymer modifiers, release agents, coating additives, brighteners or cosmetic additives.

Embodiment 2～10

[0039] Embodiment 2~10, the preparation of N-methylpiperazinyl silane coupling agent

[0040] Embodiment 2~10 are the same as embodiment 1, wherein,

[0041] In the preparation of N-methylpiperazinylpropylmethyldimethoxysilane, the weight ratios of N-methylpiperazine and chloropropylmethyldimethoxysilane are shown in Table 1 respectively.

[0042] The prepared N-methylpiperazinyl silane coupling agent is used to prepare fabric softening and finishing agents, polymer modifiers, release agents, paint additives, brighteners or cosmetic additives.

[0043] Table 1

[0044]

[0045] In conjunction with temperature, reaction time, reaction pressure test, the reaction yield corresponding to each embodiment is shown in table 1, as can be seen, comprehensively considering yield and production efficiency, N-methylpiperazinyl propyl methyl dimethyl of the present invention The optimal process selection for the preparation of oxysilane is: the weight ratio of N-methylpiperazine to ...

Embodiment 11

[0046] Embodiment 11, the application of N-methylpiperazinyl silane coupling agent

[0047] The N-methylpiperazinylsilane coupling agent prepared in Example 8 is used to prepare the fabric softening agent as an example, and the specific steps are:

[0048] A, bulk polymerization of N-methylpiperazinylpropylmethyldimethoxysilane and octamethylcyclotetrasilane (also can be DMC, choose octamethylcyclotetrasilane in this embodiment) Obtain N-methyl piperazinyl amino polysiloxane, its equation is as follows:

[0049]

[0050] Since N-methylpiperazinylpropylmethyldimethoxysilane is used to prepare N-methylpiperazinylpolysiloxane, when the latter is applied to textile finishing, the molecular weight is less than 5000, and the softness of the treated fabric Not enough, more than 80000, difficult to emulsify. Therefore, the molecular weight of N-methylpiperazinyl polysiloxane is selected between 5000 and 80000, so m is limited to between 60 and 1000; at the same time, the prepar...

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Abstract

The invention discloses preparation and application of an N-methyl piperazinyl silane coupling agent. The structural formula of the N-methyl piperazinyl silane coupling agent is shown as the formula (I). According to the invention, tetramethylammonium hydroxide is used as a catalyst; mass polymerization is conducted between the N-methyl piperazinyl silane coupling agent and octamethyl cyclotetrasiloxane to obtain N-methyl piperazinyl polysilicone; the N-methyl piperazinyl polysilicone is further emulsified by an emulsifier to obtain N-methyl piperazinyl polysilicone emulsion which can be used for preparing a fabric softening and finishing agent. Fabrics and products made of the fabrics which are treated with the N-methyl piperazinyl polysilicone have different properties and handle styles when being compared with those treated with aminoethyl aminopropyl polysilicone; wherein the N-methyl piperazinyl polysilicone is synthesized by using the N-methyl piperazinyl silane coupling agent with a novel structure as a raw material. The N-methyl piperazinyl silane coupling agent can meet the requirements of high grading and diversification of the market, and is an indispensable raw material for added-value increment and high functionalization of fibers.

Description

technical field [0001] The invention belongs to the field of organosilicon fine chemicals, and specifically relates to the preparation and application of an N-methylpiperazinylsilane coupling agent. Background technique [0002] At present, there are basically two types of textile softeners on the market, one is aminoethylaminopropyl polysiloxane, and the other is amino polyether block silicone oil, both of which are used for textile finishing, such as cotton, hemp, silk, The most important softener for woolen textiles and other natural fibers and synthetic fibers such as polyester, nylon and polyacrylonitrile, which has the functions of softness, smoothness and fluffiness. [0003] Among them, aminoethylaminopropylpolysiloxane is currently the most consumed textile auxiliaries and is known as the king of softeners. The treated fabric is soft, smooth, fluffy, anti-wrinkle, etc. It is composed of N-2-aminoethyl-3-aminopropylmethyldimethoxysilane coupling agent (ie KBM-602) a...

Claims

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Application Information

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IPC IPC(8): C07F7/18C08G77/26D06M15/643
Inventor 陈敬然陈潇濛王建伟
Owner 上海硅普化学品有限公司
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