Polyurethane modified gamma-aminopropyl-triethoxy-silane precursor and its hydrolyte

A technology of aminopropyltriethoxysilane and polyurethane modification, which is applied in textiles, papermaking, fiber treatment, etc. It can solve the problems of high baking temperature and yellowing of fabrics, and achieve lower baking temperature and better washability. and anti-felting performance improvement, excellent washing anti-felting effect

Inactive Publication Date: 2007-01-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a polyurethane-modified γ-aminopropyltriethoxysilane precursor and its hydrolyzate to solve the defects of high baking temperature and yellowing of fabrics in the prior art

Method used

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  • Polyurethane modified gamma-aminopropyl-triethoxy-silane precursor and its hydrolyte
  • Polyurethane modified gamma-aminopropyl-triethoxy-silane precursor and its hydrolyte
  • Polyurethane modified gamma-aminopropyl-triethoxy-silane precursor and its hydrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of PPT (molecular weight 3500) reacts with IPDI to generate prepolymer.

[0040] At room temperature, 66.9 grams of PPT was added to a four-necked bottle, the temperature was raised to 120°C, nitrogen was passed under a pressure of 600mmHg, and the PPT was evacuated for 1.5 hours to purify the PPT; PPT : n IPDI =1: 3-4) the calculated IPDI quality is 13.38 grams, dropwise joins in the four-necked bottle, and passes N 2 protection, the temperature was raised to 100° C., 0.02 g of DBTDL was added, the reaction was continued for 1 hour, and the reaction temperature was lowered to room temperature to obtain a prepolymer.

Embodiment 2

[0042] Preparation of Polyurethane Modified γ-Aminopropyltriethoxysilane Precursor.

[0043] At normal temperature, the ethanol of 20.7 grams is joined in the prepolymer of embodiment 1, according to measuring the content (di-n-butylamine-hydrochloric acid titration method) of free isocyanate group in the prepolymer, according to n NCO : n γ-氨丙基三乙氧基硅烷 =1:1-2, after calculating the required mass of γ-aminopropyltriethoxysilane to be 10.28 grams, add it dropwise into the reaction system, after the dropwise addition, raise the temperature to 80°C, and react for 120 minutes, The reactant becomes clear, and the temperature is lowered to room temperature to obtain a polyurethane-modified γ-aminopropyltriethoxysilane precursor.

Embodiment 3

[0045] Preparation of Polyurethane Modified γ-Aminopropyltriethoxysilane Hydrolyzate

[0046] Add 78.9 grams of the polyurethane-modified γ-aminopropyltriethoxysilane precursor of Example 2 into a three-necked bottle, slowly add a blended solution of 252.48 grams of ethanol and 63.12 grams of water under constant stirring at room temperature, and then add acetic acid Adjust the pH to 5-6, vigorously stir for 5 hours, and then stand still for 10 hours to obtain a transparent and stable polyurethane-modified γ-aminopropyltriethoxysilane hydrolyzate.

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Abstract

A polyurethane-modified gamma-aminopropyl-triethoxy-silane precursor and its hydrolysate are disclosed. The process is carried out by reacting aminopropyl-triethoxy-silane with polyurethane-performed polymer to obtain polyurethane-modified gamma-aminopropyl-triethoxy-silane precursor, and reacting it with alcohol and water to obtain hydrolysate. It has excellent wash-resisting and anti-shrink performances and can be used for textile material, wool textile and finishing agent

Description

technical field [0001] The invention belongs to the field of chemical textiles, and in particular relates to a polyurethane modified γ-aminopropyltriethoxysilane precursor and its hydrolyzate, as well as their preparation method and application. Background technique [0002] With the attention and improvement of the world's textile environmental protection regulations, it has become an important direction in the field of textile research in the world to use green technology to solve the felting problem of wool fabrics as soon as possible, so as to make them machine-washable and anti-felting. [0003] There are mainly two methods commonly used in the current industrialized anti-felting process: one is the traditional chlorination wool anti-shrinkage processing technology, and the chlorinated anti-shrinkage agent used in production is composed of chlorine gas (Cl 2 ), sodium hypochlorite (NaClO) and dichloroisocyanurate (DDCA), etc., and used together with resins such as polya...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G77/452D06M15/643
Inventor 阎克路胡毅
Owner DONGHUA UNIV
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