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Resin composition for medical use, manufacturing method thereof, and medical kit

A technology of resin composition and manufacturing method, which is applied in the manufacture of medical resin composition and dental resin composition, can solve the problems of low elastic modulus and insufficient toughness of lining materials, and achieve high elastic modulus and easy manufacture , excellent toughness effect

Active Publication Date: 2012-12-05
田仲 持郎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this denture base lining material has a low modulus of elasticity and insufficient toughness

Method used

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  • Resin composition for medical use, manufacturing method thereof, and medical kit
  • Resin composition for medical use, manufacturing method thereof, and medical kit
  • Resin composition for medical use, manufacturing method thereof, and medical kit

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The method for preparing the resin composition of the present invention is not particularly limited, but it is preferably prepared by mixing the powder of the polymer (A) and the liquid of the monomer (B). At this time, the polymerization initiator (C) may be previously contained in at least one of the powder formulation or the liquid formulation, or may be added when preparing the resin composition. When the powder and the liquid are mixed, the powder swells through the liquid, and then becomes a cake after passing through the starch syrup. When the resin composition is used as a material for denture bases, etc., the resin composition can be shaped even if it is in the form of starch syrup when working on the model. Formed into the female mold to form the desired shape. Therefore, in the work of shaping the resin composition, the resin composition is preferably maintained in a cake-like state. After shaping the resin composition, a cured molded article can be obtaine...

Embodiment 1

[0091] Mix the powder of polymethyl methacrylate produced by suspension polymerization (“Hi-Pearl D-100M” manufactured by Negami Industry Co., Ltd.: weight-average molecular weight 500,000, average particle size about 50-80 μm, containing benzoyl peroxide 0.5 ~1.0% by weight) 4 g and 2 ml of a solution of diethylene glycol dimethacrylate (hereinafter, sometimes abbreviated as 2G) and left still. After about 24 hours, fill the mixture in a cake state into a Teflon (registered trademark) mold of 2 mm × 2 mm × 25 mm, which can be formed as a test piece, and clamp it, and place it in a constant temperature chamber ("ST-101B1" manufactured by ESPEC Corporation) Internally heated at 65°C for 60 minutes, and then heated at 100°C for 90 minutes to carry out polymerization. After cooling naturally, the test piece taken out of the Teflon (registered trademark) mold was left in the air for a day, and then a three-point bending test was performed with a universal testing machine (Instron ...

Embodiment 2 and 3

[0093] In Example 1, instead of 2G, triethylene glycol dimethacrylate (hereinafter, sometimes abbreviated as 3G) or tetraethylene glycol dimethacrylate (hereinafter, sometimes abbreviated as 4G) was used as the liquid preparation , except that, in the same manner as in Example 1, the liquid and powder were mixed and left to stand. As a liquid, in the case of using 3G, after about 48 hours, in the case of using 4G, after about 96 hours, use a cake-like mixture, and prepare test pieces in the same manner as in Example 1, and use a universal The testing machine performs a three-point bending test of the test piece. For each test, the results of four kinds of bending characteristics measurements are shown in Table 1 and Figure 1~4 middle.

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Abstract

A powder agent of a polymer (A) containing 70% or more methyl methacrylate units, and a liquid agent of a monomer (B) containing at least 70% or more of the compound (b1) represented by formula (1) [wherein R represents a methyl group or a hydrogen atom and n is an integer between 2 and 4] are mixed and thickened in the presence of a polymerization initiator (C) to produce a resin composition for medical use, in particular a dental resin composition. Said resin composition is optimally supplied in the manufacture of denture bases, mouthpieces or bone cement. Molded products produced using such a resin composition have excellent mechanical properties including toughness. Furthermore, such a resin composition can be prepared with ease.

Description

technical field [0001] The invention relates to a medical resin composition, especially a dental resin composition, which comprises a polymer containing methyl methacrylate units, a monomer containing polyethylene glycol di(meth)acrylate, and a polymerization initiator agent. Moreover, it is related with the manufacturing method of such a medical resin composition. Furthermore, the present invention relates to a denture base or dental pad composed of a dental resin composition, a bone cement composed of a medical resin composition, and a medical kit containing the medical resin composition. Background technique [0002] In the medical field, resin compositions are often used due to ease of handling and ease of imparting aesthetics. For example, in the field of dentistry, thermoplastic resins, thermosetting resins, etc. are used for mucosal adjustment materials, functional impression materials, lining materials, denture bone cement etc. However, in general, molded article...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/00A61C7/08A61L27/00
CPCA61L24/06A61L2430/02C08L33/12
Inventor 田仲持郎
Owner 田仲 持郎
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