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Butyl acrylate-methyl methacrylate copolymer based denture base material as well as preparation method and application thereof

A technology of methyl methacrylate and butyl acrylate, applied in the field of prosthodontics, can solve problems such as unsatisfactory effects, and achieve the effects of improved residual monomer content, low cost and short operation period

Inactive Publication Date: 2012-05-23
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, in the field of modification of PMMA matrix materials, the method of adding SiO2, TiO2 and other nanoparticles to the PMMA matrix for compounding and using montmorillonite for intercalation compounding can significantly enhance certain properties of the matrix. In particular, the strength of the material has been significantly improved, but the effect in improving its toughness and impact strength is not very satisfactory

Method used

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  • Butyl acrylate-methyl methacrylate copolymer based denture base material as well as preparation method and application thereof
  • Butyl acrylate-methyl methacrylate copolymer based denture base material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) After mixing 1wt% of BA and 99wt% of MMA monomer, add it to a three-necked flask (the total amount of monomer is 60mL), and add 1.8g hydroxyethyl cellulose (HEC) and 0.074g Sodium dodecylbenzenesulfonate (SDBS), pour it into a three-necked flask after preliminary stirring, and continue stirring at a low speed. Pass N 2 After 40 minutes of protection, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.4 g of initiator BPO was added to initiate polymerization. After reacting for 9 hours, the reaction system was cooled and filtered, and the filtered product was washed repeatedly. Vacuum drying to constant weight to obtain the corresponding copolymerized crude product, then dissolve the copolymerized crude product P(MMA-co-BA) in n-butanol at 50-80°C, cool to -20°C, and precipitate the PMMA homopolymer, Filter, wash, and add methanol dropwise to the filtrate under stirring until the methanol / total alcohol ratio is 0.5-2, ...

Embodiment 2

[0027] (1) Add 1.5wt% BA and 98.5wt% MMA monomer into the there-necked flask after mixing (monomer total amount is 50mL), add 1.8g hydroxyethyl cellulose (HEC) and 0.074g sodium dodecylbenzene sulfonate (SDBS), pour it into a three-necked flask after initial stirring, and continue stirring at a low speed. After argon protection for 40 minutes, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.4 g of initiator azobisisobutyronitrile was added to initiate polymerization. After reacting for 5 hours, the reaction system was cooled and filtered, and the filtered product was washed repeatedly. Vacuum drying to constant weight to obtain the corresponding copolymerized crude product, then dissolve the copolymerized crude product P(MMA-co-BA) in n-butanol at 50-80°C, cool to -20°C, and precipitate the PMMA homopolymer, Filter, wash, and add methanol dropwise to the filtrate under stirring until the methanol / total alcohol ratio is 0.5-2, ...

Embodiment 3

[0031] (1) After mixing 3wt% of BA and 97wt% of MMA monomer, add it to a three-necked flask (the total amount of monomer is 50mL), and add 1.8g of calcium hydroxyphosphate and 0.074g of dodecylsulfuric acid to 200ml of deionized water at the same time Sodium, pour it into the three-necked bottle after preliminary stirring, and continue stirring at a low speed. After protecting with helium for 40 minutes, the temperature was raised to 90° C., and the inert atmosphere was maintained continuously, and 0.4 g of initiator azobisisoheptanonitrile was added to initiate polymerization. After reacting for 3 hours, the reaction system was cooled and filtered, and the filtered product was washed repeatedly. Vacuum drying to constant weight to obtain the corresponding copolymerized crude product, then dissolve the copolymerized crude product P(MMA-co-BA) in n-butanol at 50-80°C, cool to -20°C, and precipitate the PMMA homopolymer, Filter, wash, and add methanol dropwise to the filtrate u...

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Abstract

The invention discloses a butyl acrylate-methyl methacrylate copolymer based denture base material as well as a preparation method and application thereof. Methyl methacrylate as a first monomer is toughened by using butyl acrylate as a second monomer, the two monomers are copolymerized by using a suspension polymerization manner, the two monomers of the butyl acrylate and the methyl methacrylateform an oil phase, the consumption of the butyl acrylate monomer accounts for 1-10 wt percent of the mass of the oil phase, the consumption of the methyl methacrylate monomer accounts for 90-99 wt percent of the mass of the oil phase, and a copolymerized product and thermally-coagulative dental base acrylic resin liquid are uniformly mixed and heated and cured. The P(MMA-co-BA) in the invention is applied to the field of denture base materials; compared with the pure PMMA (polymethyl methacrylate) material, the bending strength and the impact strength are greatly improved, and the tensile strength is slightly increased, and the problem of the PMMA denture base material in the aspect of the mechanical strength, especially impact strength, is successfully solved.

Description

technical field [0001] The invention belongs to the field of prosthodontics, and more specifically relates to a denture base material of copolymerized and toughened polymethyl methacrylate (PMMA), especially with PMMA as the matrix and butyl acrylate (BA) as the second The invention discloses a copolymerized and toughened denture base material of two monomers, its preparation method and application. Background technique [0002] With the progress of society and the improvement of living standards, people have increasingly strong requirements for aesthetic restoration and higher requirements for oral materials. At the same time, the persistence of teeth has changed the spectrum of oral diseases. According to relevant data, the incidence rate of dental caries in my country's population is 37%, with an average of 2.47 dental caries per person. According to a population of 1.2 billion, there are nearly 500 million dental caries patients in the country, and the total number of de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/083C08F220/14C08F220/18C08F2/18C08F2/20
Inventor 郑俊萍王雷胡玉美苏强
Owner TIANJIN UNIV
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