Methyl acrylamide

A number of thermosetting acrylic resins for use as surface coatings have appeared during recent years. These are generally complex copolymers and terpolymers such as a styrene-ethyl acrylate-alkoxy methyl acrylamide... 

Copolymers of NIPAAM with acrylamide (AAM), N-methyl acrylamide (NMAAM) and N-ethyl acrylamide (NEAAM) exhibited LCSTs elevated in proportion to their comonomer content. As expected acrylamide was the most effective at elevating the LCST of the copolymer formed. However, NEAAM was more effective than NMAAM. 

AAM, acrylamide NMAAM, N-methyl acrylamide NEAAM, N-ethyl acrylamide NNBAAM, N-n-butyl acrylamide NTBAAM, N-t-butyl acrylamide NIPAAM, N-isopropyl acrylamide LCST, lower critical solution temperature TEMED, Tetramethylethylenediamine PBS, phosphate-buffered saline AIBN, 2,2 azobis(isobutyronitrile). 

Bis-[2-cyan-propyl]-ethyl-phosphanoxid " 15,7 g (0,18 mol) 2-Methyl-acrylamid werden portionsweise unter Riihren in einer Argonatmosphare so zu 30,1 g (0,18 mol) Chlor(2-cyan-propyl)-ethyl-phosphan gegeben, daB die Temp, zwischen 40 bis 60° bleibt. Es bildet sich eine kristalline, hygroskopische Masse (Imminium-Salz Schmp. 139-141°), die beim Erhitzen auf 130—140° Chlorwasserstoff abspaltet anschlieBend wird destilliert Ausbeute 27,6 g (71%) Sdp. 205-20675 10 2 Torr (6,5 10 3 kPa). 

HEA = Af-(Hydroxymethyl)methacrylamide TS = Af-[Tris(hydroxymethyl)methyl]acrylamide AA = Acrylic acid DMA = A,A-Dimethylacrylamide... 

XIV/1, 291, 1089 2-Methyl-acrylamid XIV/1, 1029 2-Methyl-acrylnitril XIV/1, 977, 990 2-Methyl-acrylsaure XIV/1, 1019 2-Methyl-acrylsaure-decylester XIV/1, 1046... 

Poly(a-methyl acrylamide) 85.11 Poly(hexamethylene isophthalamide) 246.31... 

Finally, we note that not all aqueous polymer solutions exhibit the foregoing behaviour. Thus, for example, poly(acrylic acid) and poly(acry-lamide) at low pH display positive values for the enthalpy and entropy of dilution parameters (Silberberg et ai, 1957). Day and Robb (1981) have confirmed calorimetrically that the heat of dilution of poly(acrylamide) in water is endothermic, althou, in contrast, they found that the substituted polyacrylamides poly(N-methyl acrylamide) and poly(N,N-dimethyl acrylamide) displayed negative heats of dilution. It was proposed that the endothermic character of the poly(acrylamide) solutions was a consequence of the energy required to separate the associated amide dipoles. 

Other related co-monomers were also studied. These included 7V-(hydroxy-methyl)acrylamide (HMA), methacrylamide, and iV,A/-dimethylacrylamide. The copolymerization of styrene with HMA led to less water-soluble polymer in the serum than in the case of copolymers of acrylamide and styrene. This may be attributable to differences in the hydrophilic-hydrophobic properties of acrylamide and HMA. Some monodisperse latices were prepared from styrene-HMA-water systems by procedures similar to Procedure 12-2. At a ratio of HMA to styrene of 0.2 to 1.0 the reported particle diameter was 0.3 /im with good size uniformity. It was projected that even better uniformity would be obtained when the ratio of HMA to styrene is 0.09 to 1.0. Either potassium persulfate or Af,A -azobisisopropylamidine hydrochloride has been used as initiators with similar results. Latices were generally purified by repetitive centrifiigation-decantation-redispersion cycles. 

Acryloylamido-2-methylpropanesulfonic acid monomer. See 2-Acrylamido-2-methylpropanesulfonic acid N-(Acryloylamino-methyl) acrylamide. See Methylene bisacrylamide... 

Methylenebiphenyl. See Fluorene Methylene bisacrylamide CAS 110-26-9 EINECS/ELINCS 203-750-9 Synonyms N-(Acryloylamino-methyl) acrylamide MBA N,N -Methylenebis (acrylamide) N,N -Methylenediacrylamide N,N -Methylidenebisacrylamide Empirical C7H10N2O2 Formula (CH2 CHCONH)2CH2 Properties Colorless to wh. cryst. powd. m.w. 154.17 dens. 1.235 (30 C) m.p. 185 C (with decomp.)... 

Poly A -[(2,2-dimethyl-1,3 -dioxolane)methyl] -acrylamide water 2008ZOU... 

Q-P(BMAE)19 was obtained according to the followii route, based on catalytic hydrogenation of poly(N-sec-butyl-N-methyl acrylamide) and partial methylation of the resulting polytertiary amine using ICH3 in benzene. 

When the alkene is 1,1-disubstituted, the linear aldehyde is obtained (Figure 14) [28]. The behavior of amide derivatives, however, depends on the amino group substitution. Thus, hydroformylation of the 2-methyl-acrylamide 42 (R=H) gives aldehyde 46 and by subsequent cyclization with the formation of unsaturated lactams 47, [39, 40] (Figure 14). Alternatively when R=Et, lactone 45 is formed by consecutive hydroformylation, reduction and cyclization (see section 6.6 for other consecutive processes). 

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