Dimethyl methacrylamide

Overall, samples 1-6 show that the reaction of dimethylamine with PMMA is facile, results in few side-products (MAA or amide) up to about 70 mole % conversion, and requires about 1 1 dimethylamine MMA stoichiometery. As conversion approaches the Flory limit (ca. 86 mole %), more acid (MAA) is seen, and finally at high excess amine levels and pressures, a significant amount of N,N -dimethyl methacrylamide is seen (sample 6). Other experiments at DMA/MMA ratios of 0.25-0.83 and DMA pressures of up to 4240 KPa did not produce any significant differences in anhydride or amide levels. The FTIR spectra are shown in Figure 1. Note that the anhydride has a coupled carbonyl stretch (asym=1802 cm 1, sym=1759 cm 1). This agrees well with previous literature (1800, 1760 cm 1)8 and (1800, 1758 cm 1).9... 

In this work we present a theoretical discussion regarding this interaction parameter for 10 polymer-polymer-solvent systems, 4 copolymer-solvent systems along with their corresponding polymer pairs. Our polymer blends are real mixtures of 5 homopolymers consist of poly(N,N-dimethyl methacrylamide) (PDMAA), poly(2-dimethyl aminoethyl methacrylate) (PDMAEMA), poly(acrylic acid) (PAA), a typical membrane of commercial soft-contact lens i.e. poly(2-hydroxyethyl methacrylate) (PHEMA), and poly(N-vinyl-2-pyrrolidone) (PVP) all with water solvent. Copolymers studied are poly(acrylonitrile-co-butadiene) in acetonitrile, poly(styrene co acrylonitrile) in 1,2 dichloroethane, poly (acrylonitrile-co butadiene) in hexane and poly (acrylonitrile-co butadiene) in pentane. 

Recently, Si et al. [59,60] have investigated the synthesis of polymerizable amines, such as N-(3-dimethyl-aminopropyl) acrylamide(DMAPAA) and N-(3-dimeth-ylaminopropyl) methacrylamide (DMAPMA), and their copolymerization reaction. DMAPAA or DMAPMA in conjunction with ammonium persulfate was used as a redox initiator for vinyl polymerization. Copolymers having amino pendant groups, such as copolymer of... 

Figure 5-4. 2-Bromo-2-bromomethylglutaronitrile, 2,2-dibromo-3-nitrilo-propionamide, 1,2-dimethyl-5-nitro-1 H-imidazole, 4,4-dimethyl-2-oxazo-lidinone, dimethylaminopropyl acrylamide, dimethylaminopropyl methacrylamide, or dimethylaminopropyl acrylamide, 5,5-dimethylhydantoin, dimethylurea.

Figure 17-24. Monomers in a copolymer for viscosifying diesel N,N-dimethyl-acrylamide and N,N-dimethylaminopropyl methacrylamide.

Hcxafluoro-Ar,/V-dimethylisobutanamide (15) and A,A -diethyl-2//-hexafluoroisobutan-amide (17) on reaction with the triethylamine-boron trifluoride complex give /V.A -dimethyl-perfluoro(methacrylamide) (16) and TV.N-diethylpertluoro ethacrylamide) (18), respectively.92... 

Dispersancy Solution copolymers are comparatively easy to produce in dispersant form as copolymerization with an appropriate polar monomer is relatively straightforward. If the polar monomer is also a methacrylate, reactivity ratios are essentially the same and no special procedures are required to produce random copolymers. Commercial examples have included dimethyl (or diethyl)aminoethyl methacrylate [11], hydroxyethyl methacrylate [12] and dimethylamino-ethyl methacrylamide [13]. 2-Methyl-5-vinyl pyridine [14] has also been used commercially, reactivity ratios are such that it copolymerizes slightly faster than alkyl methacrylates. Although composition drift is not severe, it should be added in a programmed fashion if a uniform distribution is desired. V-vinyl pyrrolidinone, in contrast, copolymerizes very sluggishly with methacrylates and is best incorporated via a graft reaction [15], sometimes also grafted in combination with V-vinyl imidazole [16]. Since solution chemistry is used to produce dispersant polymethacrylates, like preparation of the base polymer, only relatively simple process modifications are necessary to produce dispersants commercially. 

Asymmetric hydrocarboxylation of methyl methacrylate with carbon monoxide/methanol under rather mild conditions in the presence of a chiral palladium catalyst palladium(II) chloride/Diop or DIPHOL gives up to 99% yield of dimethyl methylsuccinatc with up to 49% ee12 29. Hydrocarboxylation of methacrylonitrile is not achieved under similar conditions, but methacrylamide (using Diop) gives 61 % yield of methylsuccinimide with 37% ee29. 

Kelly and Lang °" found cyclization of an a-haloketone with amides to be a useful strategy for preparing model oxazoles for the synthesis of dimethyl-sulfomycinate. Refluxing 2-(bromoacetyl)pyridine with methacrylamide or 4-methoxybenzamide gave 2-(2-propenyl)-4-(2-pyridyl)oxazole 201 and 2-(4-methoxyphenyl)-4-(2-pyridyl)oxazole 202 (Scheme 1.55). 

Methacrylamide monomers were chosen due to their hydrolytic stability, structural similarity to amino acids found in naturally occurring AMP, incorporation of hydrophobic and hydrophilic moieties, and pKa values. APMA was chosen due to its similarity to lysine. While ionic bonding facilitates initial polymer-cell interactions, it is the hydrophobic substituents that act to disrupt the lipid membrane of bacteria. DMAPMA and DEAPMA were chosen due to their hydrophobic dimethyl and diethyl amino groups, respectively. Copolymers were formed by copolymerising APMA with DMAPMA and APMA with DEAPMA at varying ratios. 

Therefore, RAFT polymerization is also a powerful technique to functionalize both MWCNTs and SWCNTs. Conventional monomers, such as NIPAAm, A-(2-hydroxypropyl)methacrylamide (HPMAm), DMAEMA, acrylic acid, 3-[A-(3-methacrylamidopropyl)- A, A-dimethyl] ammoniopropane sulfonate (MDMAS), styrene,maleic anhydride and A -vinylcarbazole (macroCTA-6) were used in RAFT polymerization in the presence of a macroCTA or a CNT-based RAFT agent. However, it is noteworthy that a monomer always needs a specific CTA to achieve better control over the polymerization. In other words, a CTA cannot work well for all monomers. This should be considered in the molecular design to functionalize CNTs by the RAFT technique. 

Methacrylic acid amide. See Methacrylamide Methacrylic acid amidopropyl-dimethyl-ammoniumpropyl sulfobetaine CAS 5205-95-8 Empirical C12H24N2O4S Uses Functional monomer for hydrogels, antistatics, adhesives, emulsions, paints, and inks... 

Polydimethylaminopropyl methacrylamide methylchloride quaternium. See Polymethacrylamidopropyl trimonium chloride Poly (dimethyl diallyl ammonium chloride). See Polyquaternium-6... 

Poly(methacrylamide) could subsequently be dehydrated to poly(methacrylonitrile) using a large excess of oxalyl chloride and dimethyl formamide in methylene chloride at 0°C, warming to room temperature overnight as indicated in Scheme I. To date, this reaction has only been followed by infrared spectroscopy on the atactic material. Appearance of a peak at 2238 cm" is indicative of formation of nitrile groups in this polymer. 

We have examined the interactions of seven uncharged polymers — poly(N-vinylpyrrolidone) (PVP), poly(acrylamide), poly(N,N-dimethyl-acrylamide), poly[N-(2-hydroxypropyl)methacrylamide] (PHPMA), poly-(vinyl alcohol), poly(ethylene oxide), and dextran — with multilamellar suspensions of DPPC or DPPG, under conditions similar to those used in the work described above. In none of these experiments have we observed significant changes in the phase transition behavior of the... 

Acryl monomers Ethyl acrylate Butyl acrylate 2-Ethylhexyl acrylate Methyl methacrylate Butyl methacrylate Diethyl amino ethyl methacrylate Dimethyl amino ethyl methacrylate Acrylonitrile Acrylamide Methacrylamide Vinyl monomers Ethylene Styrene Vinyl chloride Vinyl acetate Vinyl propionate Vinyl 2-ethylhexanoate Vinyl neononanoate Vinyl neodecanoate Vinyl sulfate Diene monomers Butadiene Chloroprene Isoprene... 

Methyl methacrylate (MMA), acrylamide (AM), iV,iV-dimethyl acrylamide (DMAM), N-isopropylacrylamide (NIPAM), methacrylamide (MAM), iS/-methyl methacrylamide (NMMAM), N-isopropyl methacrylamide (NIPMAM). 

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