Method for preparing melamine resin essence microcapsule finishing agent

A technology of essence microcapsules and melamine resin, which is applied in the direction of microcapsule preparation, microsphere preparation, fiber treatment, etc. It can solve the problems of short fragrance retention time, low fragrance wrapping rate, and low affinity of fabric fibers, etc., and achieves good results. The effect of simplifying the finishing process

Inactive Publication Date: 2018-06-01
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

[0029] (3) Preparation of melamine resin prepolymer

[0030] 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;

[0031] (4) Preparation of self-adhesive double-wall essence microcapsules

[0032] 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;

[0033] Mix th...

Embodiment 1

[0037] (1) Preparation of styrene-maleic anhydride copolymer powder

[0038] Add the monomer maleic anhydride, styrene and initiator into the solvent to fully dissolve, then heat the above reaction mixture to 100°C for 1.5h to obtain a metastable dispersion system of the copolymer. After the reaction is completed, centrifuge and Filter and finally dry to obtain styrene-maleic anhydride copolymer powder;

[0039] Wherein, described initiator is organic peroxide; Described solvent is organic acid alkyl ester; The consumption relation of styrene and maleic anhydride, by molar ratio is 9.7:0.3, monomer styrene and The sum of the mass concentrations of maleic anhydride is 15%; the quality of initiator in the reaction system is 0.5% of the monomer gross mass;

[0040] (2) Preparation of styrene-maleic anhydride copolymer solution

[0041] Add 1 part of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into a four-necked bottle in parts by weight, heat up to 6...

Embodiment 2

[0050] (1) Preparation of styrene-maleic anhydride copolymer powder

[0051] Add the monomer maleic anhydride, styrene and initiator into the solvent to fully dissolve, then heat the above reaction mixture to 130°C for 24 hours to obtain a metastable dispersion system of the copolymer. After the reaction is completed, centrifuge and filter , finally dry to obtain styrene-maleic anhydride copolymer powder;

[0052] Wherein, described initiator is organic peroxide; Described solvent is organic acid alkyl ester; The consumption relation of styrene and maleic anhydride, by molar ratio is 5:5, monomer styrene and The sum of the mass concentrations of maleic anhydride is 55%; the quality of initiator in the reaction system is 5% of the monomer gross mass;

[0053] (2) Preparation of styrene-maleic anhydride copolymer solution

[0054] Add 3 parts of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into the four-necked bottle in parts by weight, heat up to ...

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Abstract

The invention discloses a method for preparing a melamine resin essence microcapsule finishing agent. The method comprises the following steps: a styrene-maleic anhydride copolymer is used as an emulsifier, essence is used as a capsule core, melamine resin and polyacrylate are used as wall materials, the essence is encapsulated with an in-situ polymerization method and an interfacial polymerization method respectively, and melamine resin essence microcapsules are prepared. Self-adhesive double-wall essence microcapsules are prepared with a safe and environment-friendly preparation method, andthe solid content of the microcapsules is 35%-38%, which is 10%-15% higher than the solid content of other essence microcapsules on the market. Double-layer wall building is performed with the in-situpolymerization method and the interfacial polymerization method, the essence encapsulation ratio can reach 91%-95%, and the product emulsion has good stability. The self-adhesive double-wall essencemicrocapsules have the self-adhesive property while maintaining the unique advantages of the microcapsules, and the finishing process of cotton fabric is simplified. The finished cotton fabric has good fragrance retention effect, fragrance can be retained for 8 months after standing, and the pleasant fragrance can still be maintained after water washing is performed 12 times.

Description

technical field [0001] The invention belongs to the technical field of textile finishing, and specifically relates to a method for preparing a melamine resin essence microcapsule finishing agent prepared by an in-situ polymerization method using low-methyl etherified melamine resin as a wall material and essence as a core material . 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...

Claims

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Application Information

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IPC IPC(8): B01J13/18B01J13/16D06M23/12D06M13/00D06M15/233D06M15/423D06M15/263D06M15/31D06M101/06
CPCB01J13/18B01J13/16D06M13/005D06M15/233D06M15/263D06M15/31D06M15/423D06M23/12D06M2101/06
Inventor 张万龙
Owner 贺州宝兴新材料股份有限公司
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