Monomer salts

Equimolar amounts of 2-acrylamido-2-methyl-l-propanesufonic acid and freshly distilled tris[2-(2-methoxyethoxy)-ethyl]amine were mixed under an inert atmosphere and stirred for 8 hours at ambient temperature or until 2-acrylamido-2-methyl-l-propanesulfonic crystals dissolved. The monomer salt consisted of a slightly yellow viscous clear liquid. The salt monomer was used in the next step without further purification. 

The effect of the structure of the sulfonium salt has been investigated through the use of various sulfides. As shown in Scheme 39, monomer salts 32 and 33... 

The presence of potentially toxic residue (e.g. monomer, salts) in the final product... 

It is obvious from Figures 4 and 5 that for mentioned monomer salts AG and MAG the non-linear increase of relative viscosity (r rei) is naturally observed with the rise of monomer concentration in initial reaction solution. (As it was already mentioned the solution remained transparent.) Thus, there is definite correlation in the character of polymerization initial rate change and values of r rei.. 

The obtained data (namely the non-linearity of change of Vp on [M]) may be explained by the fact that due to comparatively high values of r rei of initial solutions of monomer salts (at [M] > 1 mole l1) the constant of chains bimolecular termination rate kt even at conditions of very small conversions is turned to be sensitive to the viscosity of initial reaction solutions and consequently to monomer concentration. Mentioned change of values of relative viscosity with the rise of initial monomer concentration should lead to symbatic reduction of constant kt and thus to mentioned non-linear increase of polymerization initial rate. The suggested explanation may be checked experimentally. If we assume that in the studied system the constant kt is naturally depended on monomer solution viscosity then in accordance with North s conceptions [4, 5] we should take that k0 rf1. Then polymerization rate may be calculated by equation 1... 

Polymer composites were either cast from polymer-salt solutions (from ethyl acetate or acrylate for bismuth halides and methanol for barium bromide), or were made by polymerizing a monomer-salt solution with benzoyl peroxide or azobisisobutyronitrile at 70°C (in a number of cases 2 wt% tetraethyleneglycol diijiethacrylate was added as cross - linker). BiBr ... 

And again, from the figure, it is evident that the polymerization leads to asymmetric polymer chain formation from the amino salt of Bu-l-acid. Further, in order to confirm the demonstration, a series of polymers obtained from monomer salts of a-phenyl ethyl amine having various optical rotations was prepared. As a result (see Figure 5) the optical rotation proved to be proportional to that of the a-phenyl ethyl amine employed in the... 

Certain polyamides and polyesters can be prepared by solid-state polycondensation step polymerization, usually by heating the appropriate monomer or monomer salt. For example, nylon 11 can be prepared by heating crystals of 11-aminoundecanoic acid (melting point =188 C) at 160°C under vacuum. Polyaddition step polymerization of conjugated dialkene monomers can be induced in the solid state by exposure of the monomer to ultra-violet radiation. For example, irradiation of crystalline 2,5-distyrylpyrazine yields quantitatively a highly crystalline linear cyclobutane polymer... 

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