Dimethacrylate esters

The process may be used to form linear polymers. Nuyken and Volkel224 225 described a method for tclcchclic production, based on the radical initiated reaction of difunctional transfer agents with dienes (e.g. divinyl benzene (13), dimethacrylate esters). However, currently the most common use of thiol-ene... 

The copolymerization of the main monofunctional monomer with a bifunctional monomer containing a luminescent group, e.g. with a dimethacrylic ester of... 

Acrylic polymers are one of the important structural adhesives (Fig. 11). These polymers can be classified as anaerobic structural acrylics (60), second generation acrylics (60,61), and aerobic acrylics (61,62). Most anaerobic adhesives are based on dimethacrylic esters, e.g., TEGDMA (triethylene glycol dimethacrylate) (Fig. 12). Anaerobic adhesives (63) containing maleimides have been reported to have improved thermal resistance. 

A neat dimethacrylate ester of a low-molecular-weight bisphenol A epoxy resin... 

A dimethacrylate ester of a brominated bisphenol A epoxy resin containing 40 wt% styrene... 

A flame retardant, unaccelerated, non-thixotropic vinyl ester (dimethacrylate ester of a brominated bisphenol-A epoxy) which with the addition of 3% antimony trioxide can achieve a flame spread rating of less than 25 (ASTM E-84). 

A preaccelerated and thixotropic epoxy vinyl ester (dimethacrylate ester of bisphenol-A epoxy) offering outstanding mechanicals, superior toughness and fatigue resistance. 

Synthetic drying oils from D-glucitol and D-mannitol, and drying oil acids have been described 104), Dianhydrohexitols completely esterified with saturated, medium-length fatty acids are useful as plasticizers 105). Analogous esterification products have been obtained from the reaction of hexitols with rosin drying oil acids, phthalic anhydride, and succinic and citric acids. The diacrylate and dimethacrylate esters of the dianhydrohexitols polymerize readily on being heated 106). 

Vlad Cristina Doina, Poinescu Ignat, and Barbu Maria. Behaviour of porous crosslinked poly(ethylene dimethacrylate esters). Eur. Polym. J. 30 no. 8 (1994) 863-868. 

Oligocarbonateacrylate (OCA) synthesis uses, in the main, the method of condensation telomerization. In some patents issued from 1945 to 1947 [20-23] experimental results are presented that prove that carbonic acid forms oligomers containing polymerizable groups of the allylic or acrylic type and one or more carbonate groups. The production of dimethacrylic esters of carbonic acid and of glycol is demonstrated. The process develops in several stages, in the presence of acid catalysts. 

OEA modification with adequate functional groups allows one to obtain some porous materials or ion-exchange resins [171-175], Still more important, however, is the use of OEAs for the production of acrylic supports necessary for gel permeation chromatography. Importantly, by means of OEAs hydrophilic and hydro-phobic gels can be produced by using methacrylic and dimethacrylic esters of glycol and triethyleneglycol [176,177]. 

Anaerobic adhesives are derived from dimethacrylate esters and are often low in viscosities. They react only in the absence of oxygen and when in contact with a metal surface at the same... 

Other substitutes that have been advanced are derivatives of BIS-GMA obtained by selective reaction of the secondary hydroxyl groups, (e,g, esters, urethanes) as shown in Fig, 2C (11,12), Still more hydrophobic variants of BIS-GMA include the dimethacrylate ester of bisphenol A (BIS-MA) and 2,2-bis[p-(2 -methacryloxyethoxy) phenyl] propane (Fig, 2D), These solid monomers, which are relatively easy to purify by recrystallization, should permit the formulation of highly pure monomer systems based on these dimethacrylates (13,14),... 

---