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Butyl methacrylate and methyl methacrylate copolymer-based denture base material and preparation method and use thereof

A technology of methyl methacrylate and butyl methacrylate, applied in the field of prosthodontics, can solve problems such as unsatisfactory effects, and achieve the effects of improved residual monomer content, good application prospects, and improved solubility values

Inactive Publication Date: 2011-05-25
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 methacrylate and methyl methacrylate copolymer-based denture base material and preparation method and use thereof
  • Butyl methacrylate and methyl methacrylate copolymer-based denture base material and preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) After mixing 1wt% of BMA and 99wt% of MMA monomer, add it into a three-necked flask (the total amount of monomer is 60mL), and add 1.8g of hydroxyethyl cellulose (HEC) and 0.074g of 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-BMA) in n-butanol at 50-80°C, cool to -20°C, and precipitate the PMMA homopolymer, Filtrate, wash, add methanol dropwise to the filtrate under stirring until the methanol / total alcohol ratio is...

Embodiment 2

[0027] (1) After mixing the BMA of 1.5wt% and the MMA monomer of 98.5wt%, add in the there-necked flask (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-dried to constant weight to obtain the corresponding copolymerized crude product, and then the copolymerized crude product P(MMA-co-BMA) was dissolved in n-butanol at 50-80°C, cooled to -20°C to precipitate the PMMA homopolymer, Filter, wash, and add methanol dropwise to the filtrate under stirring until the methanol / total a...

Embodiment 3

[0031] (1) After mixing 3wt% of BMA 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 dodecylsulfate 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-BMA) in n-butanol at 50-80°C, cool to -20°C, and precipitate the PMMA homopolymer, Filtrate, wash, add methanol dropwise to the filtrate under s...

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Abstract

The invention discloses butyl methacrylate and methyl methacrylate copolymer-based denture base material, and a preparation method thereof and use thereof. In the invention, butyl methacrylate serving as a second monomer is used to toughen methyl methacrylate serving as a first monomer, the two monomers undergo copolymerization through a suspension polymerization, the butyl methacrylate monomer and the methyl methacrylate monomer form an oil phase, the butyl methacrylate monomer accounts for 1 to 10 percent of the weight of the oil phase, and the methyl methacrylate monomer accounts for 90 to 99 percent of the weight of the oil phase, the product of the polymerization is uniformly mixed with thermosetting polymer-based denture liquid, and the mixture is heated for solidification. The poly (methyl methacrylate co butyl methacrylate) [P(MMA-co-BMA)] is used in the field of denture base materials. Compared with pure PMMA material, the P(MMA-co-BMA) is considerably improved in bending strength and impact strength and slightly improved in tensile strength. Therefore, the P(MMA-co-BMA) successfully solves the problems that the PMMA denture base material encounters in terms of mechanical strength, particularly impact strength.

Description

technical field [0001] The invention belongs to the field of prosthodontics, more specifically, relates to a denture base material of copolymerized toughened polymethyl methacrylate (PMMA), especially with PMMA as the matrix and butyl methacrylate (BMA) The copolymerization toughened denture base material which is the second monomer and 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 dental caries is more than...

Claims

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Application Information

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IPC IPC(8): A61K6/083C08F220/14C08F220/18C08F2/18
Inventor 郑俊萍王雷胡玉美苏强
Owner TIANJIN UNIV
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