Allylamines polymerization

Polymeric resins such as poly(acrylamide-acrylic acid) [24,25] [cationic resin, pAM-AA], poly(acrylic acid-diallylethylamine-HCl) [20] [amphoteric resin, pAA-DAEA-HCl], and poly(acrylamide-acrylic acid-di-allylamine-HCl [26] [amphoteric resin. pAM-AA-DAA-HCl] and poly(acrylamide-acrylic acid-diallylethylam-ine-HCl) [26] [amphoteric resin, pAM-AA-DAEA-HCl] were also used in water treatment. 

One contributing factor, which seems to have been largely ignored, is that the ring closed radical (in many cases a primary alkyl radical) is likely to be much more reactive towards double bonds than the allyl radical propagating species. This species will also have a different propensity for degradative chain transfer (a particular problem with allylamines and related monomers - see 6.2.6.4) and other processes which complicate polymerizations of the monoencs. 

Listeria monocytogenes cells partitioned between organic/ aqueous medium Poly(allylamine) used in presence of diacid chloride Polymeric microcapsules (bacteria-mediated lithography) NS Aheme et al., 1996 Whitcombe et al., 1997... 

Pulsed Plasma Polymerization. Allyl alcohol, allylamine and acrylic acid were polymerized in pulsed plasma to retain a maximum in functionalities in the resulting plasma polymer. The retention of functional groups during the plasma process, introduced by functional-group carrying monomers and followed by deposition to polymer layers, was primarily measured by XPS including the chemical derivatization of these groups as described in Experimental. These layers were also checked for side-products by respective IR spectra. The results are summarized in Table 1. 

One difference between allylamine and a mixture of allylamine with H3P04 is that, at 77 K, the former is crystalline while that latter is vitreous. To check if the different polymerization is due to the different phase state, a mixture of allylamine with glycerin was also irradiated at 77 K and defrosted. Although a 2 5 v/v mixture of allylamine and glycerin vitrifies in the same temperature region as the allylamine-H3P04 mixture, it was found that polymerization does not take place in the allylamine-glycerin mixture. 

Polymerization in third phase Commercially, the preparation of beads by polymerizing a suspension of a 2-phase emulsion in a third phase appears to be more viable The third phase should ideally be one in which both acrylic esters and allylamine hydrochlorides are insoluble. However, because of the opposite solubility properties of these two monomers, one of them is invariably soluble in a given third phase. It is believed that if one phase is dispersed in the continuous phase, then that should shield the first phase from the third. However, when the two-phase system is added to a third phase, the two-phase emulsion immediately breaks up. In most cases, the two-phase emulsions also disintegrate on heating and so adding the two-phase emulsion to a heated third phase usually proves disastrous. 

Scope and limitation of allylamine substrates were studied extensively by employing Rh-BINAP complexes 17 as the catalyst (THF, 60 °C). The structure of the substrates influenced the reaction drastically. The first limitation is P-substi-tuted allylamines, thus N,i -dimethyl-2-methyl-2-butenylamine was not isomer-ized, presumably due to the thermodynamic stability of the substrate. The second is the a-substitution, namely N,AT-dimethyl-l-methyl-2-propenylamine gave polymeric products. This fact is in accordance with the thermal instability of enamines derived from small acyclic methyl ketones. However, the cyclic allylamine, 3-diethylaminocyclohex-l-ene 50 was isomerized selectively to the corresponding enamine 51,Eq. (11). 

Kempe and Barany [45] developed the CLEAR family, which is based on the copolymerization of branched PEG-containing cross-linkers such as trimethylol-propane ethoxylate triacrylate, which contain various ethylene oxide units, with amino-functionalized monomers such as allylamine or 2-aminoethylmethacrylate. These amino groups constitute the starting points for the solid-phase synthesis. The loadings of these solid supports are affected by the amount of functionalized monomer used for polymerization. Typical loadings are in the range... 

Hence, it did not act as a linker between substrate and polymer. Through a sulfonate (OTs) or benzyl ether linkage the enantiopure imine monomers 47 and 48 were polymerized with styrene under radical conditions. The polymer bound imines 49 and 50 were treated with allyl bromide. Cleavage of the auxiliary followed by detachment from the sulfonate linked solid support, released the desired allylamine 51a in 95% yield with 99% ee. Cleavage of the benzyl ether linkage afforded product 51b in 93-96% yield and 99-100% de. 

These BLMs were reported to be stable for periods of 36 h. Stainless steel wire coated with a film prepared from the electrochemical polymerization of allylamine, 2-allylphenol, and 2-butoxyethanol was used recently as an... 

ALLYLAMINE (107-11-9) Forms explosive mixture with air (flash point —4°F/—20°C). Polymerization may be caused by oxidizers, peroxides, elevated temperatures. A medium-strong base. Reacts, possibly violently, with acids, strong oxidizers, hypochlorites. 

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