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Polyether/aminopolysiloxane block copolymer and use thereof

An aminopolysiloxane, block copolymer technology, applied in the direction of plant fibers, fiber types, textiles and papermaking, etc., can solve the problem of high shear sensitivity, affecting soft and fluffy feeling, and amino-modified silicone softeners cannot. Problems such as direct use

Active Publication Date: 2012-07-18
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Amino-modified silicone fabric softeners are currently the most commonly used modified silicone fabric softeners on the market, but ordinary amino-modified silicone softeners cannot be used directly, and special emulsification processes and technologies are required, and in dyeing and finishing It is easy to yellow during processing, causing discoloration; and it is sensitive to high pH, ​​high electrolyte, high temperature, and high shear force, and has poor compatibility; ordinary amino-modified silicone softeners have water repellency and are not Good for moisture absorption and sweat-absorbing finishing requirements, when the amount is large, the hand feels greasy; the stability of the emulsion is also poor, and the treated fabric is not easy to repair. At the same time, due to the large amount of emulsifier used, it is not conducive to environmental protection, and it also affects the performance of the treated fabric.
[0003] CN 101307567A discloses an anion-modified amino silicone oil fabric softener and a preparation method thereof. Although the water repellency, yellowing and durability of the previous amino silicone oil have been improved during post-treatment of the fabric, due to its amino functional group in the silicone chain On the side chain of the main chain, due to the defects in the molecular structure, the soft and fluffy feeling is affected to a certain extent

Method used

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  • Polyether/aminopolysiloxane block copolymer and use thereof
  • Polyether/aminopolysiloxane block copolymer and use thereof
  • Polyether/aminopolysiloxane block copolymer and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of ASPC-1:

[0028] (1) Add 20.0g of polyethylene glycol-200, 16.0g of sodium hydroxide, 1.93g of tetrabutylammonium bromide and 28.5g of dichloromethane into a three-necked flask. 37.0 g of epichlorohydrin was added dropwise, and the reaction was stopped at 55° C. for 6 hours after the dropwise addition was completed. After the reaction is completed, the generated inorganic salts are removed by filtration, the dichloromethane layer is washed three times with water, and then dried with anhydrous sodium sulfate, dichloromethane and excess epichlorohydrin are evaporated under reduced pressure to obtain an epoxy-terminated polyether intermediate;

[0029] IR (tablet method): 2869.86 (s, υCH 2 -O), 1457.30 (w, δ-CH 2 -), 1109.32 (s, υ-CH 2 -O-CH 2 -), 855.17 (w, δ-CH 2 OCH 2 -).

[0030] (2) Add 15.6g of the epoxy-terminated polyether intermediate prepared in step (1) and 30g of isopropanol into a three-necked flask, heat to 50°C under nitrogen protection...

Embodiment 2

[0033] Preparation of ASPC-2:

[0034] (1) Add 20.0g of polyethylene glycol-200, 12.0g of sodium hydroxide, 1.93g of tetrabutylammonium bromide and 14.3g of chloroform into a three-necked flask, and add them dropwise in an ice-water bath at 0-5°C 27.8g of epichlorohydrin, the reaction was stopped at 65°C for 6 hours after the dropwise addition was completed. After the reaction is completed, the generated inorganic salts are removed by filtration, the chloroform layer is washed three times with water, and then dried with anhydrous sodium sulfate, and the chloroform and excess epichlorohydrin are evaporated under reduced pressure to obtain an epoxy-terminated polyether intermediate;

[0035] IR (tablet method): 2868.70 (s, υCH 2 -O), 1458.55 (w, δ-CH 2 -), 1109.72 (s, υ-CH 2 -O-CH 2 -), 856.38 (w, δ-CH 2 OCH 2 -).

[0036] (2) Add 31.2g of the epoxy-terminated polyether intermediate prepared in step (1) and 10g of isopropanol into a three-necked flask, heat to 50°C under ...

Embodiment 3

[0039] Preparation of ASPC-3:

[0040] (1) Add 40.0g of polyethylene glycol-400, 12.0g of sodium hydroxide, 2.34g of boron trifluoride etherate and 34.0g of tetrahydrofuran into a three-necked flask. 27.8 g of epichlorohydrin was added dropwise, and the reaction was stopped at 70° C. for 6 hours after the dropwise addition was completed. After the reaction is complete, remove the generated inorganic salt by filtration, wash the tetrahydrofuran layer with water three times, and then dry it with anhydrous sodium sulfate, distill off tetrahydrofuran and excess epichlorohydrin under reduced pressure to obtain an epoxy-terminated polyether intermediate;

[0041] IR (tablet method): 2869.24 (s, υCH 2 -O), 1457.97 (w, δ-CH 2 -), 1110.21 (s, υ-CH 2 -O-CH 2 -), 855.98 (w, δ-CH 2 OCH 2 -).

[0042] (2) Add 25.6g of the epoxy-terminated polyether intermediate prepared in step (1) and 30g of isopropanol into a three-necked flask, heat to 50°C under nitrogen protection, and add 103....

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Abstract

The invention relates to a polyether / aminopolysiloxane block copolymer and use thereof. The polyether / aminopolysiloxane block copolymer is prepared mainly by reacting a compound shown in a formula I with a compound shown in a formula II at 50 to 90 DEG C, and has the viscosity of 2,000 mPa.S to 7,500 mPa.S at 25 DEG C. The block copolymer can be used as a textile softening finishing agent. In theformulae I and II, R1 is H, C1 to C6 are linear or branched chain alkyls or hydroxyls, a is an integer from 0 to 20, m is 4 to 13, and n is 12 to 25.

Description

technical field [0001] The invention relates to a polysiloxane copolymer and its application, in particular to a polyether / aminopolysiloxane block copolymer and its application. Background technique [0002] Amino-modified silicone fabric softener is currently the most widely used modified silicone fabric softener in the market, but ordinary amino-modified silicone softener cannot be used directly, and requires special emulsification process and technology. It is easy to yellow during processing, causing discoloration; and it is sensitive to high pH, ​​high electrolyte, high temperature, and high shear force, and has poor compatibility; ordinary amino-modified silicone softeners have water repellency and are not It is good for moisture absorption and sweat-absorbing finishing requirements. When the amount is large, the hand feels greasy; the stability of the emulsion is also poor, and the treated fabric is not easy to repair. At the same time, due to the large amount of emul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/38C08G77/26C08G81/00D06M15/647D06M101/32D06M101/34D06M101/06
Inventor 王利民屈蓓李洁田禾耿晓晨王峰陈立荣王桂峰
Owner EAST CHINA UNIV OF SCI & TECH
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