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N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and preparation method and application thereof

A technology of dimethyldodecyl and quaternary ammonium modification, which is applied in the fields of biochemical fiber treatment, textile and papermaking, and improved hand-feeling fibers, etc. Stability and other issues, to achieve the effect of good whiteness and water absorption, regular structure, and improved softness

Inactive Publication Date: 2017-04-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, for the side chain type quaternary ammonium silicone oil, when the amino silicone oil is synthesized by the bulk polymerization method and then prepared by quaternization reaction, the distribution of the quaternary ammonium groups of the side chain is often uneven, which easily leads to the loss of the emulsion. Stable, and this silicone oil still has a high viscosity even when the degree of quaternization is very low, it is not easy to store and emulsify

Method used

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  • N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and preparation method and application thereof
  • N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and preparation method and application thereof
  • N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0055] Octamethylcyclotetrasiloxane (D 4 ), hydrogen-containing double-heads, and catalyst acid clay solids were added into a three-necked flask equipped with a magnetic stirrer, a thermometer, and a condenser at a mass ratio of 100:24.54:2.5, and stirred and heated to 65°C for 24 hours under a nitrogen atmosphere. After the end, the viscosity of the system increased, the catalyst was removed by filtration, and the low boilers were distilled off under reduced pressure at 100°C to obtain a colorless and transparent product, which was a terminal hydrogen-containing silicone oil with a molar mass of about 680 g / mol, marked as PHMS1.

[0056] Put terminal hydrogen-containing silicone oil PHMS1 and allyl polyoxyethylene polyoxypropylene glycidyl ether (molar mass 700g / mol, marked as APE, industrial product, presented by Zhejiang Queping Textile Chemical Co., Ltd.) at a molar ratio of 1:2 Add it into the flask, under nitrogen atmosphere, add 50ppm of chloroplatinic acid (calculated ...

Embodiment 2

[0059] Octamethylcyclotetrasiloxane (D 4 ), hydrogen-containing double-heads, and catalyst acid clay solids were added into a three-necked flask equipped with a magnetic stirrer, a thermometer, and a condenser at a mass ratio of 100:3.56:2.1, and stirred and heated to 65°C for 24 hours under nitrogen atmosphere. After the end, the viscosity of the system increased, the catalyst was removed by filtration, and the low boilers were distilled off under reduced pressure at 100°C to obtain a colorless and transparent product, which was a terminal hydrogen-containing silicone oil with a molar mass of about 3900 g / mol, marked as PHMS2.

[0060] Add terminal hydrogen-containing silicone oil PHMS2 and allyl polyoxyethylene polyoxypropylene glycidyl ether into the flask at a molar ratio of 1:2, add 50ppm of chloroplatinic acid catalyst under nitrogen atmosphere, stir and heat up to 80°C, After reacting for 8 hours, a colorless to light yellow transparent product was obtained, namely epox...

Embodiment 3

[0063] Octamethylcyclotetrasiloxane (D 4 ), hydrogen-containing double-capped heads, and catalyst concentrated sulfuric acid were added into a three-necked flask equipped with a magnetic stirrer, a thermometer, and a condenser at a mass ratio of 100:1.4:2, and stirred and heated to 65°C for 24 hours under a nitrogen atmosphere. After the end, the viscosity of the system becomes larger, add sodium bicarbonate to neutralize the concentrated sulfuric acid, stir for a period of time, then filter to remove the solid, and finally remove the low boilers by distillation under reduced pressure at 100°C to obtain a colorless and transparent product with a molar mass of 9700g / The hydrogen-containing silicone oil at the end of about mol is marked as PHMS3.

[0064] Add terminal hydrogen-containing silicone oil PHMS3 and allyl polyoxyethylene polyoxypropylene glycidyl ether into the flask at a molar ratio of 1:2, add 50 ppm of chloroplatinic acid catalyst under nitrogen atmosphere, stir a...

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Abstract

The invention relates to N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and a preparation method and application thereof. The preparation method comprises the steps of reacting octamethyl cyclotetrasiloxane and tetramethyl dihydro disiloxane according to the proportion in the presence of an acid catalyst so as to prepare double-terminal hydrogenous silicon oil; carrying out hydrosilylation reaction on the silicon oil and glycidyl allyl ether or allyl polyoxyethylene polyoxypropylene glycidyl ether to obtain epoxy-terminated silicone oil; and finally, carrying out aminolysis ring-opening reaction on the epoxy-terminated silicone oil and N, N-dodecyl tertiary amine to obtain the terminal quaternization modified silicone oil. The silicone oil is used as a textile finishing agent for treating cotton fabrics, so that the cotton fabrics are endowed with an antibacterial property, meanwhile, the softness of the cotton fabrics can be also improved, and the hydrophilia is better at the same time.

Description

technical field [0001] The invention relates to a modified block silicone oil, in particular to an N,N-dimethyldodecyl terminal quaternized modified silicone oil and a preparation method and application thereof. Background technique [0002] At present, there have been many studies on quaternized modified silicone oil. In addition to the polydimethylsiloxane segment that provides flexibility, the molecular chain of this silicone oil also has an appropriate amount of cationic quaternary ammonium groups, which can endow The fabric has certain antibacterial properties, moisture absorption and antistatic properties, etc. Its antibacterial mechanism is to adsorb on the surface of microbial cells through quaternary amine groups, denature enzyme proteins and nucleic acids, destroy its enzyme system, and damage cell membranes. Compared with commercially available silicone antibacterial agents, such as (trimethoxysilylpropyl) octadecyldimethylammonium chloride, etc., quaternized mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46D06M15/647D06M101/06
CPCC08G77/46D06M15/647D06M16/00D06M2101/06D06M2200/50
Inventor 范宏金宇芬胡激江浦群
Owner ZHEJIANG UNIV
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