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Polysiloxane modified polyamide-amine as well as preparation method and application thereof

A polysiloxane and polyamide technology, which is applied in the field of polysiloxane-modified polyamide-amine and its preparation, can solve the problems of rare retanning agents, and achieve enhanced physical and mechanical properties and target product yield. High yield, dye uptake and improved dry and wet rubbing fastness

Active Publication Date: 2015-09-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many types of retanning agents at present, there are not many retanning agents based on multiple functions

Method used

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  • Polysiloxane modified polyamide-amine as well as preparation method and application thereof
  • Polysiloxane modified polyamide-amine as well as preparation method and application thereof
  • Polysiloxane modified polyamide-amine as well as preparation method and application thereof

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preparation example Construction

[0024] A kind of preparation method of polyamide-amine modified by polysiloxane of the present invention, comprises the following steps:

[0025] Step 1: Add terminal hydrogen-containing polysiloxane and allyl glycidyl ether with a molar ratio of 1: (0.8 to 1.0) into the reaction vessel, and add catalyst chloroplatinic acid and solvent, mix evenly, heat up and reflux, remove Reaction solvent, after the reaction, remove the solvent toluene at 70-90°C, then dissolve the solution in methanol, let it stand for stratification, take the supernatant, pour out the lower layer of oily liquid, and then distill out the methanol under reduced pressure at 40-60°C , to obtain a crude extract, and then repeat the above purification operation 2 to 3 times to obtain a white transparent oily liquid, that is, a single-end epoxy polysiloxane. The mass of chloroplatinic acid added is 0.15-0.35% of the total mass of reactants, the reaction temperature is 90-110°C, and the reaction time is 4-6h.

...

Embodiment 1

[0029] A preparation method of polyamide-amine modified by polysiloxane, comprising the following steps:

[0030] Step 1: Add terminal hydrogen-containing polysiloxane and allyl glycidyl ether with a molar ratio of 1:0.8, solvent toluene, and catalyst chloroplatinic acid with a total mass of reactants of 0.15% to the reaction vessel, and mix well Raise the temperature to reflux, reflux at 90°C for 4 hours, remove the reaction solvent toluene at 70-90°C after the reaction is completed, then dissolve the solution in methanol, let stand to separate layers, take the supernatant, pour out the lower oily liquid, and then 40 The methanol was distilled off under reduced pressure at ~60°C to obtain a crude extract, and the above purification operation was repeated 2 to 3 times to obtain a white transparent oily liquid, that is, a single-end epoxy polysiloxane.

[0031] Step 2: Add the first-generation polyamidoamine and single-ended epoxy polysiloxane into the reactor at a molar ratio ...

Embodiment 2

[0034] A preparation method of polyamide-amine modified by polysiloxane, comprising the following steps:

[0035] Step 1: Add terminal hydrogen-containing polysiloxane and allyl glycidyl ether with a molar ratio of 1:0.9, solvent toluene, and catalyst chloroplatinic acid with a total mass of reactants of 0.15% to the reaction vessel, and mix well Raise the temperature to reflux, reflux at 90°C for 5 hours, remove the reaction solvent toluene at 70-90°C after the reaction is completed, then dissolve the solution in methanol, stand to separate layers, take the supernatant, pour out the lower oily liquid, and then 40 The methanol was distilled off under reduced pressure at ~60°C to obtain a crude extract, and the above purification operation was repeated 2 to 3 times to obtain a white transparent oily liquid, that is, a single-end epoxy polysiloxane.

[0036] Step 2: Add the first-generation polyamidoamine and single-ended epoxy polysiloxane into the reactor at a molar ratio of 1...

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Abstract

The invention discloses polysiloxane modified polyamide-amine as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, adding allyl glycidyl ether, end-hydrogen-containing polysiloxane and chloroplatinic acid into a reactor for reflux reaction, thereby obtaining single-ended epoxy polysiloxane; and further adding single-ended epoxy polysiloxane and first generation polyamidoamine into a reactor, and stirring to react and purify, thereby obtaining polysiloxane grafted polyamide-amine (PAMAM-Si) of an arborization-linear structure. The preparation method disclosed by the invention is simple and relatively high in yield. The prepared polysiloxane grafted polyamide-amine contains multi-ended amino and can be solidly bonded with leather and dye; due to the grafted polysiloxane long chain, the leather can be good in waterproof softness; due to the arborization-linear structure, a certain filling effect can be achieved, and a product obtained when the polysiloxane modified polyamide-amine is used in leather retanning procedures can meet multiple functions of leather retanning.

Description

technical field [0001] The invention belongs to the field of chemical products, and in particular relates to a polysiloxane-modified polyamide-amine and a preparation method and application thereof. Background technique [0002] Based on the characteristics of large end group functionality, high reactivity and branched structure of dendritic polymers, introducing them into the leather processing and production process can endow leather with many excellent properties. The long chain of siloxane has excellent softness, waterproof and water vapor permeability, and various silicone oils are often seen in various processes of leather processing. Amino-terminated polyamide-amines have smaller molecular weight, higher amino content, and more active reactions. Therefore, new functional polymers can be prepared through graft modification. [0003] Retanning is a key process in wet processing after tanning, which can improve the visual quality and leather properties of leather. Alth...

Claims

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Application Information

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IPC IPC(8): C08G77/388C14C3/22
Inventor 王学川孙思薇王海军张婷
Owner SHAANXI UNIV OF SCI & TECH
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