Methyl methacrylate ethylene

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,... 

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. 

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... 

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... 

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... 

Any relatively involatile monomer with the vinyl (CH2 = CH-) or vinylidene (CH2 = C<) grouping present is theoretically suitable. In practice, many are not sufficiently reactive. Of the remainder, styrene is very reactive and cheap. It is usually the chief (or only) monomer, but may have a comonomer such as vinyl toluene, methyl methacrylate, ethylene glycol dimethacrylate, triallyl cyanurate or diallyl phthalate. 

Poly(methyl methacrylate) Ethylene 90.7 5.52 57.3 [112] High pressure calcrimetry... 

A series of papers on the thermal degradation of the alkali-metal salts of poly(methacrylic acid) and of their copolymers with methyl methacrylate has appeared. The principal decomposition products have been identified and the variation in their yield with polymer composition determined. Similar experiments have been made on the barium salt of poly(methacrylic acid). Copolymer studies have included methyl methacrylate-styrene, " methyl methacrylate-flE-methylstyrene, " methyl methacrylate-ethylene," methyl... 

Similar data are available with styrene/divinylbenzene and methyl-methacrylate/ethylene glycol dimethacrylate copolymers (the second molecule providing cross-links). 

Pyrolysis of methyl methacrylate-ethylene dimethacrylate copolymer gives only one major peak (methyl methacrylate) using a hot filament detector. The composition of methyl methacrylate-ethylene dimethacrylate copolymer can be determined by pyrolysing a weighed sample and using the ratio of sample weight to area of the methyl methacrylate peak for obtaining a standard analysis curve. Under favourable conditions and with careful control of the pyrolysis column and detector, variable constituents can be determined within 0.5%. 

An internal-reflection prism cell has been used for reaction-kinetics measurement of styrene-unsaturated polyester resins at elevated curing temperatures and pressures [133]. Other researchers have estimated the cross-linking efficiency in methyl methacrylate-ethylene glycol dimethacrylate copolymer networks by laser Raman spectroscopy [134], while recently... 

---