Unlock instant, AI-driven research and patent intelligence for your innovation.

Three-protection anti-microbial finishing agent and preparation method thereof

An antibacterial finishing agent and chain extender technology, applied in the field of fine chemicals, can solve the problems of single finishing agent performance, large performance differences, and poor water and oil repellency.

Active Publication Date: 2013-08-14
HEILONGJIANG TAINA TECH DEV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been patent reports using fluorine-containing acrylates with short fluorocarbon chains to prepare water and oil repellent finishing agents, such as the water and oil repellent compositions reported in patents CN1934149A, CN1942541A, etc., but the fluorine-containing copolymer mentioned in these patents The water and oil repellency of the agent is not very good, and the performance difference with the traditional long-chain perfluoroalkyl acrylate is relatively large. The performance of this kind of finishing agent is also relatively simple, and it can only provide simple Three-proof performance, but many textiles hope to endow other properties, such as softness, durability and antibacterial performance, while performing three-proof finishing

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-protection anti-microbial finishing agent and preparation method thereof
  • Three-protection anti-microbial finishing agent and preparation method thereof
  • Three-protection anti-microbial finishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The chloropropyl polysiloxane (formula (3)) terminated by dihydroxypropyl group is obtained by quaternization reaction with dodecyldimethyl tertiary amine.

[0055]

[0056] In formula (3), m:n=2:1.

[0057] The quaternization reaction is carried out in dimethylformamide, the reaction temperature is 110°C, the reaction time is 12 hours, and the molar ratio of the reactants is 1:1. After the reaction, the solvent is distilled off under reduced pressure to obtain the quaternized bis Hydroxypropyl polysiloxane, the structural formula is as formula (4).

[0058]

[0059] In the formula (4), m:n=2:1, and the weight average molecular weight is 1000.

Embodiment 2

[0061] Dihydroxypropyl-terminated chloropropyl polysiloxane (formula (3)) is obtained by quaternization reaction with dodecyldimethyl tertiary amine, where m:n=3:2. The quaternization reaction is carried out in dimethylformamide, the reaction temperature is 100°C, the reaction time is 15 hours, and the molar ratio of the reactants is 1:1. After the reaction is over, the solvent is distilled off under reduced pressure to obtain the quaternized bis Hydroxypropyl polysiloxane has a structural formula such as formula (4), where m:n=3:2, and a weight average molecular weight of 2000.

Embodiment 3

[0063] Dihydroxypropyl-terminated chloropropyl polysiloxane (formula (3)) is obtained by quaternization reaction with dodecyldimethyl tertiary amine, where m:n=1:1. The quaternization reaction is carried out in dimethylformamide, the reaction temperature is 110°C, the reaction time is 18 hours, and the molar ratio of the reactants is 1:1. After the reaction is completed, the solvent is distilled off under reduced pressure to obtain the quaternized bis Hydroxypropyl polysiloxane has a structural formula such as formula (4), where m:n=1:1, and a weight average molecular weight of 3000.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a three-protection anti-microbial finishing agent and a preparation method thereof, belonging to the field of fine chemicals. The preparation method comprises the following steps of: mixing polyisocyanate, quaternized bihydroxypropyl polysiloxane, a chain extender, a diluent and a polymerization catalyst for reacting to prepare a quaternized organosilicon modified polyurethane prepolymer; reacting the quaternized organosilicon modified polyurethane prepolymer and perfluoroalkyl alcohol with fluorinated chain length being 4-6 to obtain a quaternized organosilicon modified short-fluorinated-chain polyurethane prepolymer; and carrying out aftertreatment on the quaternized organosilicon modified short-fluorinated-chain polyurethane prepolymer to obtain the three-protection anti-microbial finishing agent. The three-protection anti-microbial finishing agent prepared by using the preparation method is applied to various textiles and leather products, is environment-friendly and can endow the various textiles and the leather products with excellent water, dirt, oil and bacterial resistances.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a three-proof antibacterial finishing agent and a preparation method thereof. Background technique [0002] Polyurethane is a polymer polymerized from polyisocyanate and polyol. It has excellent film-forming properties, weather resistance and adhesion. Polyurethane can be easily modified by introducing polyols with special structures. Polyurethane water-dispersed emulsion, as a kind of green polymer functional material with excellent performance, is widely used in the fields of textile, leather, paint, papermaking and so on. However, due to the large number of hydrophilic groups, the traditional water-based polyurethane has poor waterproof and oil-proof performance, which limits its application range. [0003] In order to obtain waterborne polyurethane with low surface energy, some low surface energy segments can be introduced into polyurethane to enhance its water and oil repellen...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/65C08G18/61C08G18/38C08G18/12D06M15/564
Inventor 孙德庆
Owner HEILONGJIANG TAINA TECH DEV