Technology for preparing melamine resin essence microcapsule

A fragrance microcapsule and melamine resin technology, which is applied in the field of textile finishing, can solve the problems of low fragrance wrapping rate, short fragrance retention time, bad hand feeling, etc., and achieve the effect of simplifying the finishing process and good effect

Inactive Publication Date: 2018-05-08
贺州宝兴新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional microcapsule technology usually uses physical methods to prepare various open-cell flavor microcapsules, and then uses adhesives and crosslinking agents to mechanically adhere the microcapsules to fabric fibers, and the fragrance retention time is not long; at the same time Due to the existence of the adhesive, the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] (3) Preparation of melamine resin prepolymer

[0037] Put 5-10 parts of melamine and 10-20 parts of 37% formaldehyde solution into a four-necked bottle in parts by weight, heat up to 60-80°C under stirring conditions, and add 0.1-1 part of triethanolamine after the melamine is completely dissolved, Adjust the pH to 7-10, and react for 10-30 minutes to obtain a transparent and viscous melamine resin prepolymer;

[0038] (4) Preparation of self-adhesive double-wall essence microcapsules

[0039] By weight, 10-30 parts of essence, 2-5 parts of methyl methacrylate, 2-5 parts of acrylonitrile, 1-3 parts of butyl acrylate, 1-3 parts of isooctyl acrylate, 0.2-0.5 parts of methyl Acrylic acid, 0.2-0.5 parts of hydroxyethyl acrylate, 0.1-0.3 parts of diacetone acrylamide, 0.1-0.3 parts of adipic acid dihydrazide, and 0.02-0.05 parts of azobisisobutyronitrile are placed in a beaker at a temperature of 30 Stir and mix at -50°C to form a homogeneous oil solution;

[0040]Mix the...

Embodiment 1

[0044] (1) Preparation of styrene-maleic anhydride copolymer powder

[0045] A, maleic anhydride and benzoyl peroxide are added to dissolve in the toluene of 90ml;

[0046] B. Dissolve styrene in 70ml-90ml toluene, heat to 80°C while stirring;

[0047] C. Mix dodecyl mercaptan with 30ml-50ml toluene, heat to 80°C while stirring;

[0048] D. When the solution obtained in step A is heated to ℃, while adding the solution obtained in step B dropwise, add the solution obtained in step C dropwise. After the dropwise addition, heat to 90 ℃ and keep it warm, and stir for 3 hours to obtain low molecular weight styrene-malay Anhydride polymer dispersion system;

[0049] E, suction filtration, 80 ℃ of vacuum dryings, obtain low molecular weight-maleic anhydride copolymer, and the number-average molecular weight of copolymer is 10000;

[0050] Described reaction system comprises two kinds of monomer maleic anhydride and styrene, initiator, solvent and polymerization inhibitor, the tota...

Embodiment 2

[0061] (1) Preparation of styrene-maleic anhydride copolymer powder

[0062] A, maleic anhydride and lauryl peroxide are added to dissolve in the chlorobenzene of 70ml;

[0063] B. Dissolve styrene in 70mlml chlorobenzene, heat to 65°C while stirring;

[0064] C. Mix propanethiol with 30mlml chlorobenzene, stir while heating to 65°C and keep warm;

[0065] D. When the solution obtained in step A is heated to 65°C, while adding the solution obtained in step B dropwise, add the solution obtained in step C dropwise. After the dropwise addition, heat to 75°C and keep it warm, and stir for 1.8 hours to obtain low molecular weight styrene- Maleic anhydride polymer dispersion system;

[0066] E, suction filtration, 60 ℃ of vacuum dryings, obtain low molecular weight-maleic anhydride copolymer, and the number-average molecular weight of copolymer is 5000;

[0067] Described reaction system comprises two kinds of monomer maleic anhydride and styrene, initiator, solvent and polymeriz...

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Abstract

The invention discloses a technology for preparing a melamine resin essence microcapsule. The technology comprises the steps of firstly, regarding a styrene-maleic anhydride copolymer as an emulsifier, regarding essence as a capsule core, regarding melamine resin and polyacrylate as wall materials, and covering the essence through an in-situ polymerization method and an interface polymerization method respectively to prepare the melamine resin essence microcapsule. The technology has the advantages that a safe and environment-friendly preparing method is adopted to prepare a self-adhesive double-wall essence microcapsule, and the solid content of the self-adhesive double-wall essence microcapsule is 35%-38%, 10%-15% higher than that of other self-adhesive double-wall essence microcapsuleson the market. Through the in-situ polymerization method and the interface polymerization method, dual-layer wall building is conducted, the essence encapsulation rate can reach 91%-95%, and product emulsion has high stability. The self-adhesive double-wall essence microcapsule has the self-adhesive performance while maintaining the peculiar advantages of microcapsules, and the cotton fabric finishing technology is simplified. The finished fabric has a good aroma-retaining effect, the fragrance can be retained for 8 months, and after washing is conducted 12 times, the pleasant fragrance can still be maintained.

Description

technical field [0001] The invention belongs to the technical field of textile finishing, and specifically relates to a process for preparing melamine resin essence microcapsules by using low-methyl etherified melamine resin as a wall material and essence as a core material by an in-situ polymerization method. Background technique [0002] With the development of the economy and the improvement of living standards, people's requirements for textiles have undergone great changes. From the past practical type to the decoration, enjoyment, and health care type, textile perfuming conforms to this trend. Because scented textiles have the functions of antibacterial and insect repellent, covering peculiar smell, and making body and mind comfortable, they are generally liked by people. In ancient my country, there was the habit of sewing sachets on clothes; Europe has sprayed perfume on clothes since the Middle Ages as an elegant style, and later, there was a method of incense; fore...

Claims

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Application Information

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IPC IPC(8): B01J13/16B01J13/18C08F212/08C08F222/08C08G12/32C08F220/14C08F220/46C08F220/18C08F220/06C08F220/20C08F220/58D06M23/12D06M13/00D06M101/06
CPCB01J13/16B01J13/18C08F212/08C08F220/14C08F220/46C08F222/08C08G12/32D06M13/005D06M23/12D06M2101/06C08F220/1804C08F220/1808C08F220/06C08F220/20C08F220/58
Inventor 张万龙
Owner 贺州宝兴新材料股份有限公司
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