Ethoxylated dimethacrylate

Films of 7 3 mixtures of 1-naphthyl acrylate and ethoxylated bisphenol-A dimethacrylate had better planarizing properties than any of the resins that were examined and may be useful as layers for etchback processing. For use as bottom layers in multilayer-resist structures it will be necessary to bake the films after uv hardening to increase the Tg, and if the exposure wavelength is above 300 nm, an appropriate dye must be added to eliminate substrate reflections that degrade resolution. 

The step 1 product, bisphenol A diglycidyl dimethacrylate, ethoxylated bisphenol A dimethacrylate, triethlyene glycol dimethacrylate, bisphenol A diglycidyl dimethacrylate, and diphenyl iodonium hexafluorophosphate were mixed with diphenyl iodonium hexafluorophosphate and then heated to 85 °C for 5 minutes and mixed in a DAC 150 FV speed mixer for 1 minute at 3000 rpm. Silane-treated, nano-sized silica and zirconia particle filler were then added and the mixture reheated to 185°C for 5 minutes. It was then remixed in a DAC 150 FV speed mixer an additional 1 minute at 3000 rpm and the dental composition isolated. 

Bisglycidylacrylate, ethoxylated bisphenol A dimethacrylate, diurethane dimethacrylate, triethyleneglycol dimethacrylate, tricycle[5.2.1.02,6]decanedimethanol diacrylate, camphorquinone, ethyl 4-(/V,/V-dimcthylamino)benzoate, diphenyl iodonium hexafluorophosphate, 2,6-di-t-butyl-4-methylphenol, benzotriazole... 

Bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane. Ethoxylated bisphenol A dimethacrylate. cDiurethane dimethacrylate. 

Chem. Descrip. Ethoxylated bisphenol A dimethacrylate (CAS 24448-20-2) with MEHQ (500-700 ppm)... 

Dental resin formulations were prepared by the combination of SOCM with an ethoxylated bisphenol A dimethacrylate (EBPAD, Diacryl 101, Akzo Chemie America) in a 26.6 73.4 wt ratio which corresponds to a 41.5 58.5 mol ratio. Resin samples were activated by the addition of various photo-initiators and were polymerized as unfilled films between Mylar sheets. The cured samples were stored for 24 h at 37 C and then removed from the Mylar. The degree of conversion of the combined methacrylate groups of SOCM and EBP AD as well as the conversion of the spiro vinyl group of SOCM were determined by comparison of the IR spectra of the uncured resin with those of the polymerized films. The methacrylate double bond absorption at 1637 cm and the spiro vinyl absorption at 880 cm were monitored with the aromatic band at 1585 cm utilized as an internal standard reference 14),... 

The monomers that yielded homo- or copolymers were formulated into composites. Three comonomers, PBD, PBMD and p-dimethoxybenzene (DMOB), were combined individually with EBPADM, an ethoxylated bisphenol A dimethacrylate (Diacryl 101, Nouiy Chemicals), in various ratios to form the resin components of the composites. The initiator system used was 0.4 wt% camphorquinone (CQ) and 0.8 wt% ethyl 4-A, A -dimethylaminobenzoate (4-EDMAB). 

The base methacrylate monomers utilized were a polyethyleneglycol dimethacrylate (PEGMA - produced by Loctite), an ethoxylated bisphenol—A dimethacrylate (EBIPMA - produced by AKZO), a urethane methacrylated capped poly(butadiene acrylonitrile) polyol, and hydroxy-propyl methacrylate (HPMA - Rohm and Haas). The following maleimide capped monomer/prepolymers were examined N-phenyl maleimide (NPM), meta-phenylene dimaleimide (m-PDM), and a reaction product of methylenedi-aniline and excess methylenedianiline bismaleimide (P-MDA-2MDABM), sold by Rhodia Corp. under the tradename of Keramide... 

An analogous analysis of the kinetics of the photopolymerization of (ethoxylated Bisphenol A)dimethacrylate [78,98] gave constant (independent on temperature) values for the m and n exponents equal to 0.8 and 2, respectively. The rate constant k increased with the reaction temperature from 30 to 80 C, with a low activation energy of 2.2 kcaPmof. ... 

Ethoxylated bisphenol A dimethacrylate Figure 5.14 Additives for ceramic inks. 

Synonyms BIS-MA 2-methyl-2-propenoic acid (i-methylethylidene)di-4,i-phenylene ester Bisphenol A dimethacrylate 4,4 -isopropylidenediphenol dimethacrylate Bisphenol a dimethacrylate, ethoxylated Uses in dental restorative composite and adhesive materials A... 

Figure 9.25 S-N curve for MMA/ethoxylated bisphenol A dimethacrylate co-polymer...

Anaerobics are usually formulated with di- or trifunctional methacrylate monomers that can be polymerised rapidly to form a tightly crosslinked thermoset polymer. Typical examples are triethylene glycol dimethacrylate, and ethoxylated bisphenol A dimethacrylate. Other monomers are used to modify the properties. Examples are hydroxyethyl or hydroxypropyl methacrylate and acrylic or methacrylic acid these help to adjust viscosity, cure speeds and adhesive strength as seen in Equations 2.3-2.S ... 

Members of this group include 1,4-butanediol dimethacrylate, BDMA, N=2 1,6-hexanediol dimethacrylate, HDMA, N=3 and 1,10-deca-methylenediol dimethacrylate, DMDMA, N=5. The following individual diluting monomers were also evaluated, neopentyl glycol dimethacrylate, NPGDMA and trimethylolpropane trimethacrylate, TMPTMA. Two high molecular weight monomers based on the bisphenol A structure were evaluated, Bis-GMA and a related dimethacrylate prepared from ethoxylated bisphenol A (EBPADMA). 

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