Method for producing polyurothane antibiotic aromatic micro-capsule

Abstract

The present invention relates to a preparation method of polyurethane anti-bacterial aromatic microcapsule. Its raw material includes oil phase and water phase, in which the oil phase is formed from polyisocyanate, essence, inorganic anti-bacterial agent and cyclohexane, and the water phase is composed of sodium hydroxide, sodium alginate and deionized water. Its preparation method includes the following several steps: adding polyethylene glycol and acetone into oil phase, mixing them and drop-adding the obtained mixture into water phase for 1.5-2hr, stirring speed is 400-600 rpm at 40-60deg.C, after the drop-addition is completed, heating to 50-70deg.C, making reaction for 1-1.5hr, filtering the obtained product so as to obtain the invented product white emulsion. The grain size of said microcapsule prepared by using the invented method is 20-4 micrometers.

Description

technical field

[0001] The invention relates to an aromatic microcapsule for textiles, in particular to the preparation of a polyurethane antibacterial aromatic microcapsule. Background technique

[0002] Fragrance 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, its slow-release property is not high, and the perfume wrapped in it has a short fragrance retention time, and most of these materials a...