Sodium bicarbonate contained oral care composition as well as preparation method and application thereof

Abstract

The invention provides a sodium bicarbonate contained oral care composition as well as a preparation method and application thereof. The oral care composition contains sodium bicarbonate, zeolite andhydroxypropyl methyl cellulose, wherein the weight ratio of the sodium bicarbonate to the zeolite is 1 to (1-3), and the weight ratio of the sodium bicarbonate to the hydroxypropyl methyl cellulose is1 to (0.02-0.2). The oral care composition provided by the invention can be applied to preparation of an oral care product, and the dosage of the oral care composition is 5-35 percent of the total weight of the oral care product. For the oral care composition provided by the invention, the sodium bicarbonate is wrapped in a zeolite cavity through a special preparation process, so that the contentof free sodium bicarbonate in the composition as a product is effectively lowered, so that a formula keeps good stability when a sufficient amount of sodium bicarbonate is contained, and the composition is difficult in decomposition and air expansion; and in addition, by adding the hydroxypropyl methyl cellulose, the sodium bicarbonate is long in time of remaining in an oral cavity and extends between teeth for friction contact to achieve the effects of deeply cleaning the oral cavity, whitening and strengthening the teeth and nursing gingiva.

Description

technical field [0001] The present invention relates to a kind of oral care product, especially a kind of oral care composition containing baking soda and its preparation method and application. Background technique [0002] Teeth whitening has become an important part of human oral health, and consumers have more and more demands for the efficacy of oral care products. Due to its physical whitening effect, oral care products added with baking soda have become popular in recent years , especially baking soda toothpaste. Because baking soda is slightly soluble in water, a part of baking soda soluble in water can remove soft dirt and grease on the tooth surface, while the insoluble part of baking soda can act as an abrasive to help remove tooth surface of stains. However, in order to achieve a significant whitening effect, the amount of baking soda added should be above saturation, but when the amount is too large, because the NaHCO3 content is relatively high, and its aqueo...

AI Technical Summary

Problems solved by technology

However, in order to achieve a significant whitening effect, the amount of baking soda added should be above the saturation level. However, when the amount is too large, because the NaHCO3 content is relatively high, and its aqueous solution is easy to decompose, the salt content of the system will increase and the alkalinity will be high. The degree of disaggregation of sodium carboxymethyl cellulose makes the formulation binder ineffective, making the formulation unstable; on the other hand, NaHCO3 has a very active HCO3-ion, and when NaHCO3 is dissolved in an aqueous solution, the HCO3-ion will react with H2O , slowly release CO2 gas, causing the paste of the toothpaste to swell, and adding a large amount of baking soda will also affect the taste and produce a bitter feeling

[0003] Baking soda toothpaste currently on the market does not contain enough baking soda, the residual time in the mouth is short, and the whitening effect is not significant, but the toothpaste with high content is prone to insufficient stability of the paste and bitter taste.

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