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Denture stabilizing sealant and preparation method thereof

A sealant, stable technology, used in dental preparations, pharmaceutical formulations, medical science, etc., can solve the problems of short bond strength time and reduced bond performance

Inactive Publication Date: 2020-11-10
长沙博谱科学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, currently disclosed denture stable sealants contain a lot of polyvinyl methyl ether / maleic anhydride calcium sodium mixed salt (or vinyl methyl ether-maleic acid copolymer), and have excellent properties in terms of bonding strength, Certain results have been achieved in terms of action time, etc., but most of the current denture stable sealants require the use of high molecular weight vinyl methyl ether-maleic acid copolymers (or corresponding salts). Once low molecular weight copolymers are used, the bonding performance will drop significantly
In addition, the action time also needs to be further improved. Although many products claim to be able to act for a long time, the time to actually maintain a high bond strength is relatively short.

Method used

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  • Denture stabilizing sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A denture stabilization sealant prepared as follows:

[0026] Get 20 mass parts of liquid paraffin, 30 mass parts of vaseline, heat in a water bath to melt and mix uniformly, then mix 30 mass parts of polyvinyl methyl ether / maleic anhydride calcium sodium mixed salt (calcium The total sodium substitution rate is 50%), 50 parts by mass of hydroxyethyl cellulose, 15 parts by mass of NCO-terminated polyethylene glycol and isophorone diisocyanate prepolymer, 1 part by mass of silicon dioxide, 0.1 parts by mass The pigment and 0.5 parts by mass of menthol are added to the carrier, and stirred continuously, and cooled to room temperature after stirring evenly.

[0027]Among them, the prepolymer of NCO-terminated polyethylene glycol and isophorone diisocyanate is obtained by vacuum-drying 10 parts by mass of polyethylene glycol (molecular weight 1000) at 100°C for 3 hours to remove water, and cooling to 70°C 50 parts by mass of isophorone diisocyanate and 0.05 parts by mass o...

Embodiment 2

[0029] A denture stabilization sealant prepared as follows:

[0030] Get 20 mass parts of liquid paraffin, 30 mass parts of vaseline, heat in a water bath to melt and mix uniformly, then add 40 mass parts of polyvinyl methyl ether / maleic anhydride calcium sodium mixed salt (calcium The total sodium substitution rate is 50%), 50 parts by mass of hydroxyethyl cellulose, 20 parts by mass of NCO-terminated polyethylene glycol and isophorone diisocyanate prepolymer, 1 part by mass of silicon dioxide, 0.1 parts by mass The pigment and 0.5 parts by mass of menthol are added to the carrier, and stirred continuously, and cooled to room temperature after stirring evenly.

[0031] Wherein, the prepolymer of NCO-terminated polyethylene glycol and isophorone diisocyanate is prepared by the method in Example 1.

Embodiment 3

[0033] A denture stabilization sealant prepared as follows:

[0034] Get 20 mass parts of liquid paraffin, 30 mass parts of vaseline, heat in a water bath to melt and mix uniformly, then mix 30 mass parts of polyvinyl methyl ether / maleic anhydride calcium sodium mixed salt (calcium The total sodium substitution rate is 60%), 40 parts by mass of hydroxyethyl cellulose, 15 parts by mass of NCO-terminated polyethylene glycol and isophorone diisocyanate prepolymer, 1 part by mass of silicon dioxide, 0.1 parts by mass The pigment and 0.5 parts by mass of menthol are added to the carrier, and stirred continuously, and cooled to room temperature after stirring evenly.

[0035] Wherein, the prepolymer of NCO-terminated polyethylene glycol and isophorone diisocyanate is prepared by the method in Example 1.

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Abstract

The invention relates to a denture stabilizing sealant and a preparation method thereof. The sealant includes polyvinyl methyl ether / maleic anhydride calcium-sodium mixed salt with number average molecular weight of 200000-400000, cellulose derivatives containing hydroxyl groups, NCO-terminated polyethylene glycol and prepolymer of isophorone diisocyanate. Through the addition of the NCO-terminated polyethylene glycol and prepolymer of isophorone diisocyanate, cross linking effects can be achieved, so that good bonding strength can be well maintained.

Description

technical field [0001] The invention relates to the field of denture stable sealants, in particular to a vinyl methyl ether-maleic anhydride copolymer (or corresponding salt) that does not need to rely on high molecular weight, and which has excellent properties in terms of bonding strength, action time, etc. Denture securing sealant. Background technique [0002] The population aging in China has become more and more serious, the number of patients with missing teeth is gradually increasing, and the number of patients wearing complete dentures will also increase accordingly. In foreign countries, consumers are more accustomed to using denture stable sealants or adhesives (Denture adhesives, DA) to temporarily assist denture retention and stability. There are relevant specialized manufacturers in foreign countries. DA dosage forms include powder, ointment, cream, spray and pad dosage forms, and there are dozens of product brands, but there are relatively few in China at pre...

Claims

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Application Information

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IPC IPC(8): A61K6/891A61K6/898A61K6/35A61K6/893
CPCA61K6/35A61K6/887A61K6/891A61K6/893A61K6/898
Inventor 陈坚刘玉德
Owner 长沙博谱科学仪器有限公司
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