Preparation method of aromatic polyurea microcapsule

A technology of microcapsules and polyurea, which is applied in the fields of fiber treatment, textiles and papermaking, etc., can solve the problems of low slow release, irregular porosity, and short fragrance retention time of fragrances, etc., and achieve high fragrance slow release and easy Processing effect

Inactive Publication Date: 2009-04-29
江阴市诺科生物新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its unstable capsule wall and irregular porosity, its sustained release is not high, and the perfume wrapped in it has a short fragrance retention time, and most of these materials are prepared by oily systems, and sometimes some monomers are free.
Does not meet environmental requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Preparation

[0019] Oil phase: IPDI 5.55g, chamomile essence 24g, cyclohexane 25ml

[0020] Water phase: NaOH (15%) 2ml, deionized water 200ml, sodium alginate 0.3g

[0021] Diethylenetriamine: 3.0g

[0022] 2. Preparation process

[0023] a. According to the above ratio, dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring,

[0024] b. Mix the oil phase, diethylenetriamine and 40ml of deionized water, and add it dropwise to the water phase at 40°C with a stirring speed of 500 rpm, and drop it in 2 hours.

[0025] c, be heated up to 50 ℃, continue to react for 1.5 hours,

[0026] d, carry out suction filtration to crude product, wash,

[0027] e. Drying below 80°C, the product is micron-sized powder.

Embodiment 2

[0029] 1. Preparation

[0030] Oil phase: HDI6.02g, jasmine essence 24g, cyclohexane 25ml

[0031] Water phase: NaOH (15%) 2ml, deionized water 200ml, sodium alginate 0.3g

[0032] Diethylenetriamine: 3.0g

[0033] 2. Preparation method

[0034] a. According to the above ratio, dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring,

[0035] b. Mix the oil phase, diethylenetriamine and 50ml of deionized water, and add it dropwise to the water phase at 50°C with a stirring speed of 600 rpm, and drop it in 1.5 hours.

[0036] c, heat up to 60°C, continue to react for 1 hour,

[0037] d, carry out suction filtration to crude product, wash,

[0038] e. Drying below 80°C, the product is micron-sized powder.

Embodiment 3

[0040] 1. Preparation

[0041] Oil phase: TDI5.50g, mint essence 25g, cyclohexane 25ml

[0042] Water phase: NaOH (15%) 2ml, deionized water 200ml, sodium alginate 0.3g

[0043] Diethylenetriamine: 3.0g

[0044] 2. Preparation method

[0045] a. According to the above ratio, dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring,

[0046] b. Mix the oil phase, diethylenetriamine and 60ml of deionized water, and add it dropwise to the water phase at 60°C with a stirring speed of 600 rpm, and drop it in 1.5 hours.

[0047] c, heat up to 70°C, continue to react for 1 hour,

[0048] d, carry out suction filtration to crude product, wash,

[0049] e. Drying below 80°C, the product is micron-sized powder.

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PUM

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Abstract

The present invention relates to preparation process of aromatic polyurea microcapsule for textile. The aromatic polyurea microcapsule is prepared with oil phase material including polyisocyanate, essence and cyclohexane; and water phase material including sodium hydroxide, sodium alginate and deionized water. The preparation process includes adding divinyl triamine and deionized water into oil phase through mixing, dropping into the water phase material through stirring at 400-600 rpm within 1.5-2 hr at 40-60 deg.c; heating to 50-70 deg.c to react for 1-1.5 hr; suction filtering the reaction product, washing, stoving at temperature lower than 80 deg.c to obtain micron level powder as the product. The aromatic polyurea microcapsule has grain size of 4-20 micron, slowly released fragrance and environment friendship.

Description

technical field [0001] The invention relates to an aromatic microcapsule for textiles, in particular to a preparation method of an aromatic polyurea microcapsule. Background technique [0002] Aromatic microcapsules are composed of spices and encapsulated capsules, with a particle size of 20-40um. Fragrance microcapsules are widely used in the textile industry. The main functions are: to reduce the contact between fragrances and the outside world, thereby preventing the fragrance from volatilizing too quickly, reducing the loss of fragrance, having a certain slow-release effect, and prolonging the fragrance retention time. In the past, the capsule materials of aromatic microcapsules were mostly made of melamine-formaldehyde resin, gelatin and other materials. Due to the problems of unstable capsule wall and irregular porosity, the sustained-release performance is not high, and the perfume wrapped with it has a short fragrance retention time, and most of these materials are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/02D06M15/564D06M23/12
Inventor 华明扬
Owner 江阴市诺科生物新材料科技有限公司
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