Polyurethane material, high-elasticity antibacterial polyurethane powder puff and preparation method thereof

Abstract

The invention provides a polyurethane material, a high-elasticity antibacterial polyurethane powder puff and a preparation method thereof. The polyurethane material is prepared from the following rawmaterials in parts by weight: 100 parts of a polyether polyol mixture, 3 to 6 parts of a wollastonite powder, 1 to 2 parts of an anti-mildew additive, 60 to 80 parts of an isocyanate mixture, 30 to 40parts of a hardening agent, 35 to 45 parts of a foaming agent, 40 to 50 parts of fillers, 5 to 8 parts of an antibacterial agent, 1 to 4 parts of a refreshing and slipping agent, and 2.5 to 6 parts of a catalytic cross-linking agent. The polyurethane powder puff provided by the invention is researched and developed specifically at the aim of providing good adaptability and compatibility for humanbody skin; compared with the conventional latex and the existing powder puff which is prepared by adopting industrial polyurethane, the polyurethane powder puff has the unique advantages of better skin affinity, no slag drop, odourlessness, bacterial resistance, high elasticity, better oil control capacity, more convenience in cleaning, exquisite hand feeling, environment friendliness and the like, and has a broad popularization and application prospect.

Description

technical field [0001] The invention belongs to the technical field of cosmetics, and in particular relates to a powder puff for cosmetics, in particular to a polyurethane material for a powder puff and a preparation method thereof, in particular to a polyurethane powder puff with high elasticity and antibacterial properties and a preparation method thereof. Background technique [0002] There are many kinds of traditional powder puff products. In terms of use, there are powder puffs for washing face, cosmetic powder puffs, etc. In terms of shape, there are sheet powder puffs (various thicknesses), block powder puffs (various shapes, rhombus, triangle, etc.) of) and so on. The materials of traditional puffs are mainly natural latex and chemically synthesized latex. This kind of latex-based puff has the following defects in actual use: [0003] (1) Natural latex powder puffs are prone to aging, have a short service life, and are severely shed during use, and have average wat...

AI Technical Summary

Problems solved by technology

[0003] (1) Natural latex powder puffs are easy to age, have a short service life, and are severely shed during use, and have average water absorption. At the same time, they will smell of latex, and latex is an allergen, which can easily cause skin allergies

[0004] (2) Chemically synthesized latex powder puffs are more toxic during the production process and emit more toxic gases, so the finished powder puffs produced will more or less contain a certain amount of toxic gases, potentially endangering human health; and dandruff during use It is better than natural latex powder puff, but the problem of chipping can not be solved

There are also some polyurethane-based powder puffs in the prior art, such as the existing patents with patent application numbers CN201310404967.1 and CN201710621139.1. The powder puffs are prepared based on polyurethane polymerization, and the raw materials generally include polyether polyols, isocyanates, and hardeners. , foaming agent, catalyst, etc., but the performance of polyurethane puffs in the prior art is very limited compared with the performance of traditional latex puffs. For example, in the selection of polyether polyols and isocyanates, only common raw materials are used. Polyether polyols and isocyanates are combined to improve the performance of polyurethane prepolymers. The hardening agents are basically common polyols. This polyol hardening agent is a mature hardening aid in the chemical industry. There is no outstanding technical effect in the preparation of polyurethane puffs. The foaming agent distilled water is equipped with commonly used silicone surfactants. Similarly, this commonly used silicone surfactant does not play a unique role in the preparation of polyurethane puffs. , the most critical thing is the choice of catalyst. In the prior art, ether catalysts are mostly used, with general catalytic activity and low toxicity. Therefore, the raw materials for the preparation of polyurethane powder puffs in the prior art are essentially the raw materials for the preparation of industrial polyurethane. That is to say, the polyurethane powder puff in the prior art is essentially only the molding application of polyurethane working raw materials in the powder puff mold. There is no special research on human skin in the prior art, which can be friendly to human skin and can be clearly distinguished at the same time. Polyurethane puff preparation technology based on traditional latex

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