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Phosphoric acid etching agent and preparation method thereof

A phosphoric acid etchant and phosphoric acid technology, used in pharmaceutical formulations, dental preparations, press mold cups, etc., can solve problems such as caking and poor shape, and achieve the effects of extending storage period, improving surface properties and reducing surface tension

Pending Publication Date: 2020-07-31
四川涑爽医疗用品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, commercially available phosphoric acid etching agents have problems such as agglomeration and poor shaping.

Method used

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  • Phosphoric acid etching agent and preparation method thereof
  • Phosphoric acid etching agent and preparation method thereof
  • Phosphoric acid etching agent and preparation method thereof

Examples

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specific Embodiment approach 1

[0041] A phosphoric acid etchant, said phosphoric acid etchant is mainly made of phosphoric acid, fumed silica, glycerin, sodium lauryl ether sulfate, polyethylene glycol, methylene blue, purified water, said phosphoric acid The parts by weight of phosphoric acid in the etchant are 350 parts by weight, the parts by weight of fumed silica are 100 parts, the parts by weight of glycerin are 100 parts, the parts by weight of sodium lauryl ether sulfate are 10 parts, polyethylene glycol The parts by weight of alcohol are 20 parts by weight, the parts by weight of methylene blue are 0.01 parts by weight, and the parts by weight of purified water are 250 parts by weight.

[0042]A phosphoric acid etching agent described in this embodiment, the average primary particle size of fumed silica in the phosphoric acid etching agent is 7-40nm, the aggregate particle size is 200-300nm, and the specific surface area is 200m 2 / g, SiO 2 Content ≥ 99.0%.

[0043] A phosphoric acid etching agen...

specific Embodiment approach 2

[0056] A phosphoric acid etchant, said phosphoric acid etchant is mainly made of phosphoric acid, fumed silica, glycerin, sodium lauryl ether sulfate, polyethylene glycol, methylene blue, purified water, said phosphoric acid The parts by weight of phosphoric acid in the etching agent are 380 parts by weight, the parts by weight of fumed silica are 250 parts by weight, the parts by weight of glycerin are 250 parts, the parts by weight of sodium lauryl ether sulfate are 50 parts, polyethylene glycol The parts by weight of alcohol are 50 parts by weight, the parts by weight of methylene blue are 1 part by weight, and the parts by weight of purified water are 400 parts by weight.

[0057] A phosphoric acid etching agent described in this embodiment, the average primary particle size of fumed silica in the phosphoric acid etching agent is 7-40nm, the aggregate particle size is 200-300nm, and the specific surface area is 200m 2 / g, SiO 2 Content ≥ 99.0%.

[0058] A phosphoric acid...

specific Embodiment approach 3

[0070] A phosphoric acid etchant, said phosphoric acid etchant is mainly made of phosphoric acid, fumed silicon dioxide, glycerin, sodium lauryl ether sulfate, polyethylene glycol, methylene blue, purified water, and its parts by weight are respectively 350-380 parts of phosphoric acid, 100-250 parts of fumed silica, 100-250 parts of glycerin, 10-50 parts of sodium lauryl ether sulfate, 20-50 parts of polyethylene glycol, 0.01-1 Parts of methylene blue, 250-400 parts of purified water.

[0071] A phosphoric acid etchant described in this embodiment is used for intraoral restoration or orthodontic treatment. The corrosion of the etchant is used to treat the surface of restorations such as tooth bodies, metals, and ceramics to remove contamination layers, roughness, etc. surface and improve its surface properties. Polyethylene glycol is a good solubilizer, stable and not easy to deteriorate. It can adjust the consistency of the paste and prolong the storage period of the paste;...

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Abstract

The invention discloses a phosphoric acid etching agent and a preparation method thereof, and belongs to the technical field of oral cavity bonding. The cleaning agent is prepared from phosphoric acid, fumed silica, glycerin, sodium lauryl ether sulfate, polyethylene glycol, methylene blue and purified water. The cleaning agent is prepared from the following components in parts by weight: 350 to 380 parts of phosphoric acid, 100 to 250 parts of fumed silica, 100 to 250 parts of glycerol, 10 to 50 parts of sodium lauryl ether sulfate, 20 to 50 parts of polyethylene glycol, 0.01 to 1 part of methylene blue and 250 to 400 parts of purified water. The phosphate acid etching agent is non-flowing colloid and can be placed at a pre-coating position, the viscosity of the phosphate acid etching agent can be reduced by stirring the phosphate acid etching agent when the phosphate acid etching agent is used so as to facilitate uniform coating, and the colloid can be stirred after being used so asto reduce the thickness, facilitate flushing, avoid residues and achieve proper viscosity of materials in clinical use. The blue color is shown, so that the enamel surface is easy to identify, and theoperation is easier.

Description

technical field [0001] The invention belongs to the technical field of oral cavity bonding; in particular, it relates to a phosphoric acid etchant and a preparation method thereof. Background technique [0002] Teeth are mainly composed of four parts: enamel, dentin, pulp and cementum. Enamel is mainly composed of about 97% mass fraction of inorganic minerals (mainly hydroxyapatite), 2% water and 1% trace organic matter. Structurally, enamel is composed of enamel columns and columnar stroma. In the oral cavity, the surface of enamel is usually non-polar and has low surface energy, which is not conducive to adhesion. Dentin is mainly composed of about 70% mass fraction of inorganic minerals (mainly hydroxyapatite), 18% protein, 10% water and 1.5% trace organic matter. Structurally, dentin is composed of tubules and odontoblast processes in tubules, peritubercular and intertubular dentin. During tooth preparation, due to the high-speed cutting and extrusion of the bur, a 1...

Claims

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Application Information

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IPC IPC(8): A61K6/891A61K6/838A61K6/76A61K6/65A61K6/60A61K6/15
Inventor 关晴光耿丽鑫邹萍范玉奇邢跃志
Owner 四川涑爽医疗用品有限公司
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