Methacrylate guanidine

Korhonen, A., K. Hemminki, and H. Vainio. 1983. Embryotoxic effects of acrolein, methacrylates, guanidines and resorcinol on three day chicken embryos. Acta Pharmacol. Toxicol. 52 95-99. 

Keywords acrylate- and methacrylate guanidines radical polymerization poly (meth) acrylate guanidines, conformational behavior, micro-heterogeneity... 

For revealing of influence of conformational state of macro-radicals on kinetics of radical polymerization of acrylate- and methacrylate-guanidines in water mediums with the help of viscosimetry method the values of macroscopic viscosities in solutions modeling reaction mixtures at low conversion degrees were measured and obtained data were compared with kinetic ones. 

Peculiarities of Radical Polymerization Reactions of Acrylate- and Methacrylate Guanidines... 

Acrylate- and methacrylate guanidines (AG and MAG) were prepared with high yield (to 80%) by reaction of acrylic acids and guanidine according to method elaborated by authors of this article and described in work [1], Kinetics of AG and MAG monomers polymerization was studied by dilatometry method in bidistillated water (pH 6.5, 60°C) on low conversion degrees (< 5%) after preliminary degassing of reaction mixtures on vacuum equipment (103 millimeters of mercury). Ammonium persulfate (APS) was used as initiator. The degree of conversion of monomer into polymer was determined on the base of contraction values determined by densimetry method which for GA polymerization reaction in water was 10.8%, and for MAG - 7.0%. Intrinsic viscosities [r ] of polymers were determined IN solution of NaCl in water at 30°C. Relative viscosities r rei of reaction solutions were determined at 30°C. 

The methacrylic backbone structure makes the spherical Toyopearl particles rigid, which in turn allows linear pressure flow curves up to nearly 120 psi (<10 bar), as seen in Fig. 4.45. Toyopearl HW resins are highly resistant to chemical and microbial attack and are stable over a wide pH range (pH 2-12 for operation, and from pH 1 to 13 for routine cleaning and sanitization). Toyopearl HW resins are compatible with solvents such as methanol, ethanol, acetone, isopropanol, -propanol, and chloroform. Toyopearl HW media have been used with harsh denaturants such as guanidine chloride, sodium dodecyl sulfate, and urea with no loss of efficiency or resolution (40). Studies in which Toyopearl HW media were exposed to 50% trifluoroacetic acid at 40°C for 4 weeks revealed no change in the retention of various proteins. Similarly, the repeated exposure of Toyopearl HW-55S to 0.1 N NaOH did not change retention times or efficiencies for marker compounds (41). 

The synthesis of the module is provided in Scheme 10.5 (Kushner et al. 2007). Double alkylation of ethyl acetoacetate followed by guanidine condensation afforded alkenyl-pyrimidone intermediate 24 (Kushner et al. 2007). Isocyanate 25 was coupled to pyrimidone 24 to yield 26. Upon dimerization in DCM, RCM effectively cyclized the two UPy units (Mohr et al. 1997 Week et al. 1999). A one-pot reduction and deprotection through hydrogenation using Pearlman s catalyst gave diol module 27. Finally, capping 27 with 2-isocyanatoethyl methacrylate at both ends provided the UPy sacrificial cross-linker 28, which was thoroughly characterized by H- and C-NMR, Fourier transform IR (FTIR), and mass spectrometry. 

When the less hindered 2,4-tolylene diisocyanate is reacted with a phospholene oxide catalyst linear oligomeric carbodiimides are obtained which have been reacted with a variety of nucleophiles to give poly(ureas), poly(acyl ureas), poly(formamidines) and poly-(guanidines) by addition across the N=C=N group. Also, reaction of the oligomeric carbodiimides with acrylic or methacrylic acid affords linear polymers, which can be further polymerized by free-radical type processes. Also, reaction of the carbodiimide oligomers obtained from 2,4-TDI with adipic acid in DMF produces a polyureid. ... 

CA 80, 110502 (1974) AP, KCIO4, formamidine perchlorate (I) and tetramethylammonium perchlorate (II) were used as oxidizers and poly (Me methacrylate) (III), polystyrene, soot, S and guanidine nitrate were used as fuels. For AP-III mixts, the catalyst effectiveness, Z = u/uq (where Uo is the burning rate of an uncatalyzed mixt) increases with pressure. The Z for AP-III and AP-polystyrene mixts decreased with increasing ambient temp. Rapid increases in u and A occurred at small catalyst content but at m = 1—5%, Z increased only slightly. The catalyst effectiveness decreased as the u/, increased = A/Uf,°- ... 

New acrylate and methacrylate monomer derivatives (meth) acrylate guanidines, methacryloyl guanidine and it s hydrochloride and also a number of model (meth) acrylate compounds (corresponding acids, salts and amides, methacryloyl chloride, methylmethacrylate, guanidine and it s hydrochloride) were investigated by NMR spectroscopy method. Structure of synthesized monomers was determined, and dependence of spectral characteristics on structure of investigated compounds and used solvent was shown. 

O for S substitution [22], This large change in redox potential can alter the reactivity of the MOj core the dimolybdenum tetracarboxylate Mo2(T PB)4 can act as a catalyst for radical addition reactions of polyhaloalkanes to 1-alkenes, whereas amidinate and guanidinate analogs are catalysts for the radical polymerization of methyl methacrylate [23]. 

Methacrylic anhydride Maleic anhydride Maleic salts Maleate esters Acrylamide Acrylonitrile Vinyl pyrrolidone Vinyl acetate Vinyl guanidine Aspartic acid Modified proteins... 

---