Polymer 2-acrylamide-2-methyl propane-sulfonate

Tumoko and coworkers [485] showed that polymers based on acrylamide, methyl propane sulfonic acid and butyl methacrylate in conjunction with poly(2 methacryloyloxyethyl phosphorylcholine-co-butyl methacrylate) are capable of suppressing platelet adherence. Similar results [486] were found on poly(gamma benzyl 1 glutamate-co-leucine) neutralized with sodium. 

Homopolymers and copolymers from amido-sulfonic acid or salt containing monomers can be prepared by reactive extrusion, preferably in a twin screw extruder [1660]. The process produces a solid polymer. Copolymers of acrylamide, N-vinyl-2-pyrrolidone, and sodium-2-acrylamido-2-methyl-propane sulfonate have been proposed to be active as fluid loss agents. Another component of the formulations is the sodium salt of naphthalene formaldehyde sulfonate [207]. The fluid loss additive is mixed with hydraulic cements in suitable amounts. 

T. Nonaka, H. Ogawa and H. Egawa, Uphill and selective transport of alkali and alkali earth metal ions through 2,3-epithiopropyl methacrylate-2-acrylamide-2-methyl propane sulfonic acid copolymer membranes, J. Appl. Polym. Sci., 1990, 41, 2868-2884. 

Acrylamide monomer is a white crystal, available commercially as a 50 wt % aqueous solution. Acrylamide monomer can be polymerized to a very-high-molecular-weight (lO -lO g/mole) homopolymer, copolymer, or terpolymer. Polyacrylamide (PAM) is a nonionic polymer. The anionic polyacrylamide species can be obtained from the hydrolysis of the amide (—CONH ) functional group of the homopolymer, or from the copolymerization of acrylamide with an anionic monomer, such as acrylic acid (AA) or 2-acrylamino 2-methyl propane sulfonic acid (AMPS). Acrylamide can be copolymerized with a cationic monomer, such as dimethyl diallylammonium chloride (DMDAAC) or acryloyloxyethyl trimethyl ammonium chloride (AETAC), to form the cationic acrylamide polymer. Acrylamide can simultaneously react with anionic and cationic monomers to form a polyampholyte. The acrylamide homopolymer, copolymers, and terpolymers are synthesized (1-20) by free radicals via solution or emulsion or other polymerization methods. F. A. Adamsky and E. J. Beckman (21) reported the inverse emulsion polymerization of acrylamide in supercritical carbon dioxide. The product classes of acrylamide polymers include liquid, dry, and emulsion. 

The wear properties of four kinds of DN gels, which were composed of synthetic or natural polymers, were evaluated [47]. The first gel was a PAMPS/PAAm DN gel, which consists of poly(2-acrylamide-2-methyl-propane snlfonic acid) and polyacrylamide. The second gel was a PAMPS/PDMAAm DN gel, which consists of poly(2-acrylamide-2-methyl-propane sulfonic acid) and poly(NJ4 -dimethyl acrylamide). 

In theory, it is possible to synthesize ultrahigh molecular weight polymers to reduce the amount of crosslinking agents and the extractable level. There is a report on the excellent absorption of water of ultrahigh molecular weight poly(2-acrylamide-2-methyl-l-propane sulfonic acid) (poly-AMPS) that supports this statement [14]. However, there has been no other report on this subject. 

When the water structure in the hydrated polymers was examined using the differential scaiming calorimetric technique, it was found that a large amount of free water existed in the MPC polymers [poly(MPC-co-BMA) and poly(MPC-co-n-dodecyl methacrylate (DMA) with 30 unit mol% of MPC] compared with that in poly(HEMA), poly(aciylamide-co-BMA) (PAM), poly(sodium 2-methyl-2-acrylamide propane sulfonate-co-BMA) (PAMB), and poly(N-vinyl pyrrolidone-co-BMA) (PVB) °. 

Propanesulfonic acid-3-hydroxy-y-sultone. See 1,3-Propane sultone 1-Propanesulfonic acid, 3-mercapto-, monosodium salt. See Sodium mercaptopropane sulfonate 1-Propanesulfonic acid, 2-methyl-2-[(1-oxo-2-orpoenyl) amino]-, monosodium salt, polymer with N,N-dimethyl-N-2-propenyl-2-propen-1-aminium chloride and 2-proepnamide. See Poly (acrylamide-[2-acrylamide-2-methylpropylsulfonate]-dimethyldiallyl ammonium chloride) sodium salt 1-Propanesulfonic acid, 3-(2-propynyloxy)-, sodium salt. See Sodium 3-(2-propynyloxy)-1-propanesulfonate... 

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