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Multipolymer organosilicon finishing agent and its preparation method

A multi-copolymerization, silicone technology, used in fiber processing, textiles and papermaking, plant fibers, etc.

Inactive Publication Date: 2014-04-16
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Amino silicone oil, a traditional softening agent, can improve the hand feel of fabrics, but it will reduce the antifouling and easy decontamination ability of fabrics treated with organic fluorine compounds

Method used

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  • Multipolymer organosilicon finishing agent and its preparation method
  • Multipolymer organosilicon finishing agent and its preparation method
  • Multipolymer organosilicon finishing agent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Add 33.4g (0.01069mol) of terminated dihydroxypolydimethylsiloxane (the brand name is WS-62M, molecular weight is 3125g / mol), 90.7g (0.2267mol) polyethylene glycol (molecular weight is 400g) to the dry there-necked flask / mol), 2.5g (0.01864mol) DMPA (dissolved in 7.5g N-methylpyrrolidone), pass N 2 Under air protection, the temperature of the water bath was raised to 65°C and stirred evenly, then 10.7g (0.0637mol) HDI was added dropwise thereto, and then the temperature was raised to 70°C, dibutyltin dilaurate catalyst was added dropwise, and the reaction was carried out at constant temperature for 2 hours. Then cool down to 50°C, add 1.9g of triethylamine to the reaction system, neutralize for 30min, raise the temperature to 90°C, add N-β-(aminoethyl)-γ-aminopropylmethyl dimethoxy 27.1 g (0.1315 mol) of base silane (brand name: DL-602) and catalyst KOH were reacted at constant temperature for 5 hours. The temperature was lowered to 65°C, and an appropriate amount of ...

Embodiment 2

[0060] Add 20.1g (0.00643mol) end-dihydroxy polydimethylsiloxane (brand name is WS-62M, molecular weight is 3125g / mol), 112.0g (0.28mol) polyethylene glycol (molecular weight is 400g) to the dry there-necked flask / mol), 3.0g (0.02236mol) DMPA (dissolved in 9.0g N-methylpyrrolidone), pass N 2 Under air protection, the water bath was heated to 75°C and stirred evenly, then 17.3g (0.1029mol) HDI was added dropwise thereto, and then the temperature was lowered to 70°C, dibutyltin dilaurate catalyst was added dropwise, and the reaction was carried out at constant temperature for 2 hours. Then cool down to 50°C, add 2.3g of triethylamine to the reaction system, neutralize for 30min, raise the temperature to 90°C, add N-β-(aminoethyl)-γ-aminopropylmethyl dimethoxy 34.4 g (0.167 mol) of base silane (brand name: DL-602) and catalyst KOH were reacted at constant temperature for 5 hours. The temperature was lowered to 65°C, and an appropriate amount of acetic acid was added dropwise to...

Embodiment 3

[0062] Add 14.8g (0.004736mol) end-dihydroxy polydimethylsiloxane (brand name is WS-62M, molecular weight is 3125g / mol), 129.2g (0.323mol) polyethylene glycol (molecular weight is 400g) to dry there-necked flask / mol), 2.9g (0.02164mol) DMPA (dissolved in 9.0g N-methylpyrrolidone), through N 2 Under gas protection, the water bath was heated to 65°C and stirred evenly, then 19.6g (0.1166mol) HDI was added dropwise thereto, and then the temperature was raised to 70°C, dibutyltin dilaurate catalyst was added dropwise, and the reaction was carried out at constant temperature for 2 hours. Then cool down to 50°C, add 2.2g of triethylamine to the reaction system, neutralize for 30min, raise the temperature to 90°C, add N-β-(aminoethyl)-γ-aminopropylmethyl dimethoxy 26.5 g (0.1286 mol) of base silane (brand name is DL-602) and catalyst KOH, constant temperature reaction for 6 hours. The temperature was lowered to 65°C, and an appropriate amount of acetic acid was added dropwise to th...

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Abstract

The invention relates to a multipolymer organosilicon finishing agent and its preparation method. The organosilicon finishing agent has a structure as defined in the specification, wherein n=400-1000; m=500-5000; R is selected from alkyl group, phenyl group, cyclohexyl group or its alkyl-substituted derivative group; and R1, R2, R3 and R4 are selected from C1-C4 alkyl groups. The preparation method comprises the following steps of: performing a reaction among diisocyanate, polyether glycol, hydroxyl silicone oil and a hydrophilic chain extender to obtain polyether block organosilicon polyurethane bearing -OH end group, carrying out chain extension on the obtained polyether block organosilicon polyurethane bearing -OH end group through a silane coupling agent, adding acid for neutralization, and carrying out water dispersion. The multipolymer organosilicon finishing agent can be used together with fluorine finishing agents, not influencing antifouling and easy decontamination effects of fabrics processed by an organic fluorine finishing agent. Simultaneously, softness and smooth feeling of the finished fabrics can be raised.

Description

technical field [0001] The invention relates to a fabric finishing agent, in particular to a water-soluble multi-component copolymerized silicone finishing agent and a preparation method thereof. Background technique [0002] Silicone finishing agent is a kind of modified siloxane or polysiloxane based on polyether modified silicone oil. Among them, polyether modified silicone oil is widely used in leather, textile, paper and personal care because of its excellent surface properties. products and many other aspects have broad application prospects. Polyether modified silicone oil is composed of polyether segment and polysiloxane segment with very different properties connected by chemical bonds. The hydrophilic polyether segment endows it with water solubility and hydrophobic polydimethylsiloxane The oxane segment gives it low surface tension. Therefore, as a polymer surfactant, the performance of polyether modified silicone oil in many aspects is unmatched by general orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/647C08G18/67C08G18/61C08G18/48C08G18/32C08G18/38D06M101/06
Inventor 鲍利红李青史晨曦
Owner BEIJING INST OF CLOTHING TECH
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