Polyether block piperazine silicone oil as well as preparation method and application thereof in cotton woven finishing

A technology of piperazine silicone oil and polyether block is applied in the field of preparation of new polyether block piperazine silicone oil, which can solve the problems of reduced wearing comfort, easy yellowing of fabrics, strong hydrophobicity, etc., and achieves improved hydrophilicity. , Improve the stability of emulsion, improve the effect of emulsifying ability

Active Publication Date: 2015-06-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are major defects in the fabrics treated with such traditional amino silicone oils: the fabric is easy to yellow, and the hydrophobicity is too strong, which leads to reduced wearing comfort, etc.
Therefore, the added solvent and excess reaction raw materials increase the energy consumption of the reaction process

Method used

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  • Polyether block piperazine silicone oil as well as preparation method and application thereof in cotton woven finishing
  • Polyether block piperazine silicone oil as well as preparation method and application thereof in cotton woven finishing
  • Polyether block piperazine silicone oil as well as preparation method and application thereof in cotton woven finishing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Octamethylcyclotetrasiloxane (D 4 ), piperazine double-capped heads, and catalyst tetramethylammonium hydroxide solid were added into a three-necked flask equipped with a magnetic stirrer, a thermometer, and a condenser at a mass ratio of 100:6.6:0.02, and stirred under a nitrogen atmosphere to raise the temperature to 90°C React for 10 hours, then raise the temperature to 150°C and keep it for 1 hour to decompose the tetramethylammonium hydroxide catalyst, and finally distill under reduced pressure at 150°C to remove the low boiling point, and the obtained colorless, transparent and viscous product is bismuth with a molar mass of about 5000g / mol Piperazine-terminated polysiloxane, labeled PTSO1 (see image 3 ).

[0040] Add double-ended piperazine polysiloxane PTSO1 and double-ended epoxy polyether (molar mass 600g / mol, marked as EPEG, industrial product, purchased from Wuxi Huilong Electronic Materials Co., Ltd.) into the flask in an equimolar mass ratio , add 40wt....

Embodiment 2

[0042] Octamethylcyclotetrasiloxane (D 4 ), piperazine double-capped heads and catalyst KOH were added into a three-necked flask equipped with a magnetic stirrer, a thermometer and a condenser at a mass ratio of 100:3.3:0.02, stirred and heated to 90°C for 10 hours under a nitrogen atmosphere, and finally heated at 150°C Distill under reduced pressure to remove the low boiling point, and the obtained colorless and transparent viscous product is a double-ended piperazine polysiloxane with a molar mass of about 10,000 g / mol, marked as PTSO2.

[0043] Add double-ended piperazine polysiloxane PTSO2 and double-ended epoxy polyether (molar mass 600g / mol, marked as EPEG) into the flask in an equimolar mass ratio, and add 40wt.% isopropanol in the total amount of reactants to make Solvent, heat up to 80°C, and react for 6-7 hours to obtain polyether block piperazine silicone oil (PTSO2-PEG). The solvent isopropanol can be used as a dilution stabilizer for silicone oil and as a small m...

Embodiment 3

[0045] Octamethylcyclotetrasiloxane (D 4), piperazine double-capped heads, and catalyst NaOH were added to a three-necked flask equipped with a magnetic stirrer, a thermometer, and a condenser at a mass ratio of 100:1.65:0.02, stirred and heated to 90°C for 10 hours under a nitrogen atmosphere, and finally heated at 150°C Distill under reduced pressure to remove the low boiling point, and the obtained colorless and transparent viscous product is a double-ended piperazine polysiloxane with a molar mass of about 20,000 g / mol, marked as PTSO3.

[0046] Add double-ended piperazine polysiloxane PTSO3 and double-ended epoxy polyether (molar mass 600g / mol, marked as EPEG) into the flask in an equimolar mass ratio, and add 40wt.% isopropanol in the total amount of reactants to make Solvent, heat up to 80°C, and react for 6-7 hours to obtain polyether block piperazine silicone oil (PTSO3-PEG). The solvent isopropanol can be used as a dilution stabilizer for silicone oil and as a small ...

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Abstract

The invention discloses a synthesis of polyether block piperazine silicone oil and an application thereof in cotton woven finishing. The preparation method comprises the following steps: reacting the octamethylcyclotetrasiloxane (D4) and the dipiperazine double end sockets in proportion in the presence of an alkali catalyst to obtain the double-end piperazine silicone oil, reacting the silicon oil with the double-end epoxy terminated polyether to obtain the polyether block piperazine silicone oil. The silicon oil is emulsified for finishing the cotton woven, so that the processed fabric not only has good softness, but also has hydrophilcity, hygroscopicity and yellow resistance. A simple synthetic method is designed by the invention, the piperazine and the polyether groups are introduced into the silicon oil main chain so that the defects of no yellow resistance and bad hydrophilcity of the traditional amino silicon oil processed fabrics can be overcome.

Description

technical field [0001] The invention relates to a silicone fabric softening and finishing agent, in particular to a preparation method of a novel polyether block piperazine silicone oil and its application in cotton fabric finishing. Background technique [0002] Silicone fabric softening agent is a kind of textile auxiliaries widely used. Compared with C-O bonds and C-C bonds in polymer materials with carbon chain structures, Si-O bonds and Si-C bonds have longer bond lengths and larger bond angles. Therefore, the main chain of polyorganosiloxane The free energy of rotation is very low, the main chain is very soft, and the surface tension is low. After it is used for fabric finishing, the soft silicone adheres to the surface of the fabric to form a relatively smooth film. Therefore, the friction coefficient of the fabric surface can be reduced, which is reflected in the improvement of fabric softness, elasticity, anti-wrinkle and other properties. [0003] Among them, ami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08G81/00D06M15/647D06M101/06
Inventor 范宏金宇芬浦群李伯耿
Owner ZHEJIANG UNIV
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