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Glycidyl methacrylate (GMA) is an ester of methacrylic acid and glycidol. Containing both an epoxide and an acrylate groups, the molecule is bifunctional . It is a common monomer used in the production of epoxy resins.
Bis-GMA (bisphenol A-glycidyl methacrylate) is a resin commonly used in dental composite, dental sealants. [1] [2] and dental cement. It is the diester derived from methacrylic acid and the bisphenol A diglycidyl ether. Bearing two polymerizable groups, it is prone to form a crosslinked polymer that is used in dental restorations. [3]
Glycidyl methacrylate This page was last edited on 22 March 2024, at 05:51 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ...
Addition of further Bisphenol A and a catalyst and heat can produce Bisphenol A glycidyl ether epoxy resins of higher molecular weight that are solid. [8] Structure of bisphenol-A diglycidyl ether epoxy resin: n denotes the number of polymerized subunits and is typically in the range from 0 to 25
When used with methyl methacrylate, it leads to gel point at relatively low concentrations because of the nearly equivalent reactivities of all the double bonds involved. It is used as a monomer to prepare hydroxyapatite/poly methyl methacrylate composites. EGDMA can be used in free radical copolymer crosslinking reactions.
Polymethyl methacrylate is the clear break-resistant sheeting sold as acrylic glass (or simply acrylic sheet) or under the trade name Plexiglas, Perspex, etc. Polyacrylates are used in cosmetic products as rheology modifiers and film formers, and these are typically polymers of acrylic acid fluids.
Glycidol is used as a chemical intermediate in the synthesis of other glycidyl ethers, esters, and amines. [9] Glycidol can be O-benzylated in the presence of strong base. [10] More typically, such glycidol ethers are produced by reaction of epichlorohydrin with alkoxides. [11]
However, protic solvents with reactive free hydroxy groups are undesirable in battery systems. The epoxy alcohol glycidol is formed in the decarboxylation of glycerol-1,2-carbonate at temperatures > 175 °C, reduced pressure and in the presence of acidic [28] or basic [29] (e.g. potassium oxide) catalysts in yields of 75 to 85%