Methacrylic ethylene

It is of much interest to compare polymer monoliths with monolithic silica columns for practical purposes of column selection. Methacrylate-based polymer monoliths have been evaluated extensively in comparison with silica monoliths (Moravcova et al., 2004). The methacrylate-based capillary columns were prepared from butyl methacrylate, ethylene dimethacrylate, in a porogenic mixture of water, 1-propanol, and 1,4-butanediol, and compared with commercial silica particulate and monolithic columns (Chromolith Performance). 

CA s policy for naming acetylenic, acrylic, methacrylic, ethylenic, and vinyl polymers is to use the source-based method, and source-based representation is used to depict the polymers graphically thus, a synonym for polyethylene is polyethylene and not poly(1,2-ethanediyl) a synonym for polypropylene is polypropylene, and poly(vinyl alcohol) is named ethenol homopolymer although ethenol does not exist. Thus, these polymers are named and represented structurally by the source-based method, not the structure-based method. 

The first case is the copolymerization of monomer A with diene BB where all the double bonds (i.e., the A double bond and both B double bonds) have the same reactivity. Methyl methacrylate-ethylene glycol dimethacrylate (EGDM), vinyl acetate-divinyl adipate (DVA), and styrene-p- or m-divinylbenzene (DVB) are examples of this type of copolymerization system [Landin and Macosko, 1988 Li et al., 1989 Storey, 1965 Ulbrich et al., 1977]. Since r = Yi, Fi = f and the extent of reaction p of A double bonds equals that of B double bonds. There are p[A] reacted A double bonds, p[B] reacted B double bonds, and p2[BB] reacted BB monomer units. [A] and [B] are the concentrations of A and B double bonds,... 

Glycidyl Methacrylate Glycidyl Methacrylate Ethylene Glycol... 

Fig. 15. Effect of the diluent volume fraction on the temperature of the T and T d dispersions of poly(2-hydroxyethyl methacrylate) Ethylene glycol (—, O) formamide (-.-, 3) water (—, ) propanol (..., >). The curves have been calculated according to Eq. (13), for the system PHEMA-water drawn through experimental points...

Optically active phosphine monoester 69 was prepared as a stable transition state analogue of the hydrolysis of 70, and used as a template (Scheme 13.17) [52], When heated in the presence of amidine 72, methyl methacrylate, ethylene glycol dimethacrylate and AIBN, polymerization took place and offered the polymer 73, in which the template 69 is attached to the binding sites by a combination of hydrogen bonds and electrostatic interactions. After washing in the presence of MeOH and aqueous NaOH, the template was removed from the cavity, thus leading to a catalytically active MIP. 

Consistent with our previous findings using systems consisting of butyl methacrylate, ethylene dimethacrylate, and 2-acrylamido-2-methyl-l-propanesulfonic acid [54,64,72], the column efficiency of quinidine-functionalized monolithic capillaries again clearly depends on the pore size. Fig. 6.30 illustrates that this holds for chiral monoliths prepared by either thermal or UV initiation [60], As previously found for the reversed phase separations of alkylbenzenes, the effect of pore size on the separation of enantiomers is also rather complex and subtleties of these effects remain to be explored in more detail. 

Butyl methacrylate-ethylene dimethacrylate copolymer containing 0.3 wt.% 2-acryl-amido-2-methy 1-1 -propane-sulfonic acid... 

Abbreviations y x AFM AIBN BuMA Ca DCP DMA DMS DSC EGDMA EMA EPDM FT-IR HDPE HTV IPN LDPE LLDPE MA MAA MDI MMA PA PAC PB PBT PBuMA PDMS PDMS-NH2 interfacial tension viscosity ratio atomic force microscopy 2,2 -azobis(isobutyronitrile) butyl methacrylate capillary number dicumyl peroxide dynamic mechanical analysis dynamic mechanical spectroscopy differential scanning calorimetry ethylene glycol dimethacrylate ethyl methacrylate ethylene-propylene-diene rubber Fourier transform-infra-red high density polyethylene high temperature vulcanization interpenetrating polymer network low density polyethylene linear low density polyethylene maleic anhydride methacrylic acid 4,4 -diphenylmethanediisocyanate methyl methacrylate poly( amide) poly( acrylate) poly(butadiene) poly(butylene terephtalate) poly(butyl methacrylate) poly(dimethylsiloxane) amino-terminated poly(dimethylsiloxane)... 

II (Lower-index inert component) Cyclohexyl methacrylate Ethylene glycol dimethacrylate Dimethyl suberate Benzoin methyl ether 1.0 ml 0.12 ml 0.25 ml 0.06 g Monomer Crosslinking monomer Inert Initiator 1.505 -1.5 1.4326... 

III (Higher-index inert component) Butyl methacrylate Ethylene glycol dimethacrylate 1-Phenylnaphtha1ene Benzoin methyl ether 0.5 ml 0.5 ml 0.5 ml 0.07 g Monomer Crosslinking monomer Inert Initiator 1.47 1.5 1.666... 

The first production of polymer N202-chelates starts from a macroporous glycidyl methacrylate-ethylene dimethycrylate copolymer Nucleophilic addition of ethylen-diamine led to polymer amine, which is converted with salicylaldehyde to the Schiff base ligand (57) and then with Cu and Co to chelates (52) (Eq.20). 

Ethylene dimethacrylate-methyl methacrylate Ethylene dimethacrylate 1,3-Butylene dimethacrylate Acrylonitrile a-Chloroacrylonitrile Vinyl acetate Styrene Vinyltoluene Divinylbenzene A -Vinyl-2-pyrrolidone 4-Vinylpyridine Diallyl phosphite Triallyl phosphate Butenediol... 

Modification of bone brings about some decrease in its water sorption behavior. The decrease in sorption at 50% relative humidity was less pronounced than that found for collagen or rat skin. However, when high yields of polymer were formed on the substrate such as in the reaction of bone with cyanoethyl acrylate, hydroxyethyl and glycidyl methacrylate, ethylene, dimethacrylate, or divinylbenzene, water sorption at 50% relative humidity was reduced to 3.0-4.5 g H20/g bone. 

Hydroxyethyl methacrylate Hydroxyethoxyethyl methacrylate Hydroxydiethoxyethyl methacrylate Methoxyethyl methacrylate Methoxyethoxyethyl methacrylate Methoxydiethoxyethyl methacrylate Ethylene glycol dimethacrylate A-Vinyl-l-pyrrohdone A-Isopropyl AAm Vinyl acetate Acrylic acid... 

The results presented proved our assumption that the use of Shultz s equations, should be in some circumstances dissuaded. Even Shultz himself suggested in [47] that in some circumstances (as in the crosslinking of methyl methacrylate - ethylene dimethacrylate system) negative, physically unreal X values were obtained. In this case, a special factor (e.g. - l) has to be used... 

LDPE/PA6 Diethylsuccinate, glycidal methacrylate, ethylene-acrylic acid copolymer, polyethylene-g-maleic acid... 

Macroporous glycidyl methacrylate-ethylene glycol dimethacrylate (GMA-EGDM) copolymer beads were synthesised and characterised for pore volume and surface area. These reactive copolymers were derivatised with 2-picolyl amine and coordinated with chromium and vanadium ions. The peroxocomplexes of these supported metal complexes were generated by the addition of hydrogen peroxide / tertiary butyl hydroperoxide(tert. -BHP) and shown to catalyse a variety of oxidation reactions. 

Choice of Support. The most commonly used organic support is polystyrene (cross-linked with DVB) in its microp-orous (1-2% cross-linking) form, although it has also been used in its macroporous and popcorn form (Ford et al, 1982 Shan et al.,1989). Various other polymeric catalysts have been used like polyvinylpyridine resins, commercial ion-exchange resins (Arrad and Sasson, 1989), modified dextran anion exchangers (Kise et al, 1981), and macroporous glycidyl methacrylate-ethylene dimethacrylate resins (Hradil and Svec,... 

Hradil, J.,F. Svec, and J. M. J. Frechet, Mechanism of Phase-Transfer Catalysis Using Glycidyl Methacrylate-Ethylene Dimethacrylate Copolymers Modified with Tributylammonium Groups in Nucleophilic Displacement Reactions, Polymer, 28, 7595(1987). 

In a practical sense the hydrocarbon monomers that work best in anionic systems are styrene, a-methylstyrene, p-(tert-butyl)styrene, butadiene, isoprene, 2,3-dimethyIbutadiene, piperylene, stilbene, and 1,1-diphenylethylene. The latter two monomers give rise to alternating copolymers with other dienes but do not homopolymerize. Among the polar monomers (C) that can be polymerized are such monomers as 2-vinyIpyridine, pivalolactone, methacrylonitrile, methyl-methacrylate, ethylene oxide (not with Li-counterion), ethylene sulfide, and propylene sulfide. However, polymerization of many of these polar monomers suffers from side reactions and complicating termination or transfer reactions not present in the... 

Polyethylene glycol methacrylate gel is formed during copolymerization of methacrylate ethylene glycol and dimethacrylate ethylene glycol. The gels obtained are similar to the polyacrylamide ones but have better mechanical properties and transparency, and are more hydrophobic. 

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