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Hardenable two-part acrylic composition

An acrylic, composite technology, used in tissue regeneration, surgical adhesives, surgery, etc., can solve problems such as unreliability, poor repeatability, and high cost

Active Publication Date: 2015-09-16
MITSUBISHI CHEM UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the batch-to-batch reproducibility of such processes is poor, sometimes requiring additional processing of the resulting product, such as by sieving or blending, to obtain the desired particle size distribution
[0021] This makes the industrial manufacture of PMMA with a large proportion of particles < 20 microns in diameter a costly and sometimes tedious and unreliable endeavor

Method used

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  • Hardenable two-part acrylic composition
  • Hardenable two-part acrylic composition
  • Hardenable two-part acrylic composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] emulsion polymerization

[0094] Add 1.0 L of deionized water to a five-liter round-bottomed glass flask equipped with a nitrogen inlet, condenser, and electrically operated stainless steel paddle stirrer. At the same time with the help of an electric heating pack for 392min -1 With stirring, the water was heated to 82°C. A stream of nitrogen was passed through the vapor space of the flask above the liquid surface.

[0095] Prepared from 500 grams of methyl methacrylate (containing 5 ppm Topanol A inhibitor) and 5.0 grams of 75% active sodium dioctyl sulfosuccinate emulsifier (trade name: Aerosol TM OT) monomer mixture. These components are mixed before use.

[0096] Polymer seeding (stage 1 ) was prepared by adding 50 grams of the monomer mixture to the flask followed by 10 mL of a 2 wt % solution of potassium persulfate in deionized water at a water temperature of 82°C. After a slight temperature rise, the reaction proceeded for thirty minutes until the temper...

Embodiment 2

[0111] As Example 1, but using 14.0 grams of 70% active dibenzoyl peroxide and reducing mixer speed to 300min -1 .

Embodiment 3

[0113] As in Example 2, but about 1.0 grams of 1-dodecanethiol was added to the initial monomer mixture before starting the polymerization to cause a reduction in the molecular weight of the polymer.

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Abstract

The invention relates to a hardenable two part acrylic composition, a polymer component of the two part hardenable composition and a method of producing a polymer component of the two part composition. The hardenable two part acrylic composition comprises an acrylic polymer composition first part and an acrylic monomer composition second part. The acrylic polymer composition first part comprises a first type of acrylic polymer particles characterized in that each first type of acrylic polymer particle is formed of a network of coalesced emulsion polymerized acrylic microparticles or is microporous. The acrylic polymer composition may comprise emulsion polymerised acrylic polymer particles of particle size between 10 and 2000nm. The invention also extends to the use of acrylic polymer particles formed of a network of coalesced emulsion polymerized acrylic microparticles as a dough time reduction agent in a hardenable two part acrylic composition.

Description

technical field [0001] The present invention relates to polymer compositions, and in particular, but not exclusively, to hardenable two-part acrylic compositions, polymer components of the two-part hardenable compositions, and methods of producing the polymer components of the two-part compositions. technical background [0002] Hardenable compositions formed by mixing together acrylic polymers and monomers are useful in many applications. Particular utility is found in dental, medical, adhesives and construction applications where such materials have been used for over 40 years. [0003] Dental applications include their use in denture bases, denture bases, denture liners, denture repairs, custom trays, veneers for crowns and bridges, dentures, veneers and restorations for real teeth and use in tooth restoration fillers. [0004] Medical applications include their use as bone cements. Bone cements generally find application in the filling of bone cavities, and in particu...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F265/04C08L33/00A61L24/06
CPCC08F265/04A61L24/0036C08L51/003C08F265/06A61L24/0094A61L24/06A61L2430/02C08L2666/02C08L33/00
Inventor 迈克尔·斯蒂芬·奇肖姆大卫·麦克唐纳赛拉萨希布·阿比德-阿里
Owner MITSUBISHI CHEM UK LTD