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Preparation method of long-lasting-fragrant waterborne polyurethane coating

A water-based polyurethane and polyurethane coating technology, which is applied in the field of polymer materials and nanomaterials, can solve the problems of poor compatibility between fragrance molecules and polyurethane resin, poor fragrance persistence, etc., and achieve long-lasting fragrance, good compatibility, The effect of ensuring stability

Inactive Publication Date: 2019-03-29
盐城舒云新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the poor compatibility of essence molecules, polyurethane resin and other components of the formula in traditional scented polyurethane coatings, and the poor persistence of scent emission. The present invention aims to provide a long-lasting scent Preparation method of water-based polyurethane coating

Method used

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  • Preparation method of long-lasting-fragrant waterborne polyurethane coating
  • Preparation method of long-lasting-fragrant waterborne polyurethane coating

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The preparation of the polymer nanoparticle solution of embodiment 1 load essence

[0021] (1) Using styrene photosensitive monomer 7-(4-vinylbenzyloxy)-4-methylcoumarin (VM), styrene (St), maleic anhydride (MA) as comonomers, The photosensitive polymer P(St / VM-co-MA) was prepared by free radical polymerization, which was specifically reported in the document "Photosensitive Copolymer P(St / VM-CO-MA) Self-assembled Colloidal Particles and Its Properties" synthetic method.

[0022] (2) Weigh 1.5g of the prepared photosensitive polymer P(St / VM-co-MA), 0.5g of essence molecules, dissolve in 30ml of DMF, stir vigorously, and slowly add water dropwise at the same time, when blue opalescence appears , this solution was slowly added dropwise to 120ml of water, and vigorously stirred to obtain a solution of nanoparticles loaded with essence.

Embodiment 2

[0023] Photocrosslinking of Example 2 Loaded Essence-Based Nanoparticle Solution

[0024] Take the nanoparticle solution in the above step (2) and expose it to an ultraviolet lamp for 1 min to prepare a photocrosslinked nanoparticle solution loaded with essence.

Embodiment 3

[0026] The exposure time in Example 2 was adjusted to 5 min, and other conditions remained unchanged.

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Abstract

The invention discloses a preparation method of a long-lasting-fragrant waterborne polyurethane coating. In particular, firstly, a photosensitive polymer P(St / VM-co-MA) is synthesized; then by means of self-assembly technology in reported references, essence molecules are coated with the P(St / VM-co-MA) nano-particles, then a VM element crosslinking reaction is induced and stimulated under ultraviolet light; then the mixture is added to waterborne polyurethane resin, and other additives are added to prepare a polyurethane mixture; finally, coating the surface of a base material with the polyurethane mixture, and after curing, the polyurethane coating is formed. Through photo-controlled crosslinking, the essence molecules are restrained in the nano-particles tightly enough, so that the essence molecules are guaranteed to be not released in one time; the product has long-lasting fragrance.

Description

technical field [0001] The invention belongs to the field of polymer materials and nanometer materials, and in particular relates to a preparation method of a long-lasting fragrance water-based polyurethane coating. Background technique [0002] At present, due to the excellent mechanical properties of polyurethane coatings, high solid content and other properties, as well as the characteristics of solvent-free and environmental protection of water-based coatings, the application range of water-based polyurethane coatings has been expanded to various fields. The main application directions are wood coatings and automobile repairs. Coatings, anti-corrosion coatings, floor paints, electronic coatings, etc. [0003] Adding fragrance to the paint can impart functional fragrance, but due to the poor compatibility of the fragrance molecule with the polyurethane resin and other components of the formula, the dispersion uniformity of the fragrance in the paint formulation is not goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62C08F212/08C08F222/06C08F212/14
CPCC08F212/08C08F212/14C08F222/06C09D7/62C09D175/04C08K9/10C08K5/00
Inventor 葛瑞娟
Owner 盐城舒云新材料有限公司
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