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Teeth whitening strip and preparation method thereof

A tooth whitening strip and whitening agent technology, applied in the field of oral care, can solve the problems of poor water resistance of the tooth strip gel layer, poor product stability over time, and collapse of the gel skeleton structure, achieving good product stability and preparation The method is simple and easy, and the production cost is low

Pending Publication Date: 2020-01-24
广州玮弘祺生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional whitening strips have the following two problems: 1. Hydrogen peroxide will oxidize the adhesive in the product formula, resulting in the collapse of the gel skeleton structure and poor stability of the product over time; 2. The gel layer of the toothpaste is resistant to The water property is poor, resulting in a short reaction time of hydrogen peroxide on the teeth, and the whitening effect is not obvious, which cannot meet the needs of users

Method used

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  • Teeth whitening strip and preparation method thereof
  • Teeth whitening strip and preparation method thereof

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preparation example Construction

[0027] Wherein, the preparation method of embodiment 1 whitening tooth strip, each raw material comprises the following steps according to the weight percentage in Table 1:

[0028] (1) Mix polyether thermoplastic polyurethane elastomer, PEG-40 hydrogenated castor oil and glycerin evenly, heat to 130°C until completely dissolved to obtain Agent A, cool to 70°C, and set aside;

[0029] (2) Dissolve polyvinylpyrrolidone in absolute ethanol to obtain agent B, add agent B to agent A, stir evenly, wait until the temperature is lowered to 25°C, then add hydrogen peroxide and mix evenly to obtain a mixed viscous colloid;

[0030] (3) Coating the mixed viscous colloid on the peeling backing layer, covering it with a plastic film layer, and then preparing the tooth whitening strip by slitting, creasing, collecting waste, and cutting.

Embodiment 2

[0031] The preparation method of embodiment 2 whitening tooth strips, each raw material comprises the following steps according to the weight percentage in table 1:

[0032] (1) Mix polyether-type thermoplastic polyurethane elastomer, PEG-40 hydrogenated castor oil, polysorbate-20, glycerin, propylene glycol and butylene glycol, and heat to 140°C until completely dissolved to obtain Agent A, which is cooled to 75℃, standby;

[0033] (2) Dissolve polyvinylpyrrolidone in absolute ethanol to obtain agent B, add agent B to agent A, stir evenly, wait until the temperature is lowered to 28°C, then add hydrogen peroxide and mix evenly to obtain a mixed viscous colloid;

[0034] (3) Coating the mixed viscous colloid on the peeling backing layer, covering it with a plastic film layer, and then preparing the tooth whitening strip by slitting, creasing, collecting waste, and cutting.

Embodiment 3

[0035] The preparation method of embodiment 3 whitening tooth strips, each raw material comprises the following steps according to the weight percentage in table 1:

[0036] (1) Mix polyether-type thermoplastic polyurethane elastomer, PEG-60 hydrogenated castor oil, cocoeth-7, glycerin and polyethylene glycol, and heat to 150°C until completely dissolved to obtain Agent A, which is cooled to 80℃, standby;

[0037] (2) Dissolve polyvinylpyrrolidone, carrageenan and sodium carboxymethylcellulose in absolute ethanol to obtain agent B, add agent B to agent A, stir evenly, wait until the temperature is lowered to 30°C, and then add hydrogen peroxide Mix evenly to obtain a mixed viscous colloid;

[0038] (3) Coating the mixed viscous colloid on the peeling backing layer, covering it with a plastic film layer, and then preparing the tooth whitening strip by slitting, creasing, collecting waste, and cutting.

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Abstract

The invention discloses a teeth whitening strip, which is composed of the following raw materials (by weight): 5-15% of a gelatinizing agent, 1-10% of gel, 5-20% of a humectant, 1-10% of a solubilizer, 1-20% of a whitener, and the balance anhydrous ethanol. The gelatinizing agent is one of a thermoplastic polyurethane elastomer, a styrene-ethylene-butene-styrene block copolymer, a styrene-isoprene-styrene block copolymer, ethylene propylene diene monomer, thermoplastic polyolefin, thermoplastic vulcanized rubber, silicone rubber, polyamide and thermoplastic acrylic acid. The gelatinizing agentis a polyether type thermoplastic polyurethane elastomer. The invention also discloses a preparation method of the teeth whitening strip. The prepared teeth whitening strip has good stability and strong water resistance, can ensure that the whitener in the teeth whitening strip can act on teeth for a longer time, and has a more obvious whitening effect.

Description

technical field [0001] The invention relates to the technical field of oral care, in particular to a tooth whitening strip and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, many people pay more and more attention to dental beauty. There are various tooth beauty products, including tooth whitening pens, tooth whitening trays, tooth whitening kits, and whitening strips. The construction of tooth whitening strips usually includes: a plastic film layer, a gel layer and a release backing layer. The gel layer contains tooth whitening substances, which are closely connected with the plastic film layer. When using it, tear off the backing layer, stick the side with the gel layer to the surface of the teeth, and adjust the teeth with light pressure with your fingers. Stick it so that it fits the surface of the teeth completely. After use, take the strip off the teeth and discard it. Tooth whitening strips are favored ...

Claims

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Application Information

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IPC IPC(8): A61K8/87A61K8/02A61K8/22A61Q11/00
CPCA61K8/87A61K8/0204A61K8/22A61Q11/00
Inventor 林宇祺赵洁
Owner 广州玮弘祺生物科技有限公司
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