Acrylamide copolymer---emulsion

TexipoL [ tt Bader] Acrylamide copolymer emulsion Aickraer for adhesives, pigment printing, carpet backing compositions. 

Gallot et al. [60] used hpopeptides to produce stable water-in-oil macroemulsions with a droplet diameter greater than 1 pm. In the presence of a cosurfactant, these emulsions could be transformed into miniemulsions containing droplets of 100-400 nm in diameter (cetyl alcohol) or microemulsions with droplets of lO-lOOnm (C4 amine or alcohol). lipopeptide-alkyl(meth)acrylamide copolymers and acrylamidohposarcosine-alkylacryl-amide copolymers were further used as emulsifiers of cosmetic oils [61]. 

DADMAC/Acrylamide Copolymer (75/25 Wt %)-Emulsion Polymerization. The following were added to the reaction vessel 64.4 parts benzene, 15 parts DADMAC, 5 parts acrylamide, 13.5 parts deionized H20, and 2 parts sodium octyl phenoxyethoxy-2-ethanol sulfate. The vessel was purged for 1 hr with N2 at 50° 1°C after which 5 ppm Fe+2 and 2 X 10"3 mol f-butylperoxypivalate/mol monomer were added. The temperature was held at 50° 1°C for 20 hr. The product, isolated via acetone precipitation, was found to be a DADMAC/acrylamide copolymer (60/40 wt %). 

The effect of branching on the performance of 75% DADMAC/25% acrylamide copolymers in dewatering 100% waste-activated sludge was also investigated. A series of copolymers was prepared by an inverse emulsion method adding up to 0.5 mol % TAMAC (based on DADMAC... 

Vinac 828M binder, iotions Propylene glycol alginate binder, iow-emission waii paints Lipaton AE 3723 Styrene/n-butylacrylate/ acrylic acid/acrylamide copolymer binder, iow-VOC coatings Silicone Resin Emulsion BS 43A Silres MP42E... 

Cinsii 2000] Cinsii MW] Cinsii VRS] Cinsii WLS. See Silicone emulsion Cinsperse 3040L. See Polyacrylamide Cinsperse AL. See Acrylamides copolymer Cl oxidation base 10A. See p-Phenylenediamine dihydrochloride... 

Acrylamides copolymer film-former, printing inks Rubber, chlorinated film-former, protective coatings Ethyl hydroxyethyl cellulose film-former, protective skin care Diisostearyl trimethylolpropane siloxy silicate film-former, protective skin creams/lotions Myristoyl hydrolyzed collagen film-former, protective cosmetics Hydrolyzed almond protein film-former, protective skin care C20-40 alcohols film-former, pump hair sprays Acrylates/octylacrylamide copolymer film-former, PVA emulsions 3-Methoxybutanol... 

Oleyl hydroxyethyl imidazoline PEG-5M PEG-7M PEG-14M Polyacrylamide flocculant, anionic water treatment Acrylamide/sodium acrylate copolymer flocculant, aq. systems Poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride] flocculant, aq./fatty food-contact paper/paperboard Polyquaternium-6 flocculant, boiler treatment Sodium nitrite flocculant, bonding agents Acrylamides copolymer flocculant, borine-contg. solutions t-Butyl hydroperoxide flocculant, car wax emulsions Oleyl hydroxyethyl imidazoline flocculant, carpet backings Acrylamides copolymer flocculant, cement Polyacrylamide flocculant, ceramic treatment PEG-5M PEG-9M PEG-23M PEG-45M... 

PEG-2 laurate SE PEG-300 oleate PEG-300 stearate Propylene glycol myristate opacifier, depilatories Beeswax, synthetic opacifier, dermatologicals Stearamide DEA opacifier, detergents Sodium styrene/acrylates copolymer Styrene/acrylamide copolymer opacifier, dry cleaning PEG-2 stearate opacifier, dusting powders Zinc carbonate opacifier, emulsion shampoo Glycol distearate opacifier, enamels Stannic oxide opacifier, eye make up Titanium dioxide opacifier, fabrics... 

Acrylic acid/acrylamide copolymer thickener, o/w emulsions Acrylamide/ammonium acrylate copolymer Acrylic resin thickener, oil recovery Xanthan gum... 

The extent of conversion during an acrylamide polymerization is most easily followed by determining the disappearance of the monomer. High performance liquid chromatography (hplc) is often found best for this purpose. An hplc method in which poly(acrylamide) inverse emulsions can be used directly has been developed (238). In the case of copolymers, hplc protocols that allow the simultaneous determination of all the unreacted monomers can be used to evaluate compositional drift as a function of conversion. 

This was shown to good effect in an experiment [22] carried out to prepare a series of cationic acrylamide copolymers (60/40 weight ratio) as inverse emulsion polymers using identical polymerisation conditions, in which only the concentration of cross-linking monomer was varied. Subsequent determination of intrinsic viscosity values for this set of polymers showed the results in Table 3.1. 

In 1970, anidex fibers were introduced as an elastomeric fiber by Rohm and Haas with the trade name Anim. Anidex fibers are defined as fibers containing polymers that are at least 50%of one or more polymerized acrylate esters. Anidex fibers are formed through emulsion copolymerization of acrylate esters with reactive crosslinkable comonomers such as N-methyl ol-acrylamide. The resulting copolymer emulsion is mixed with a filler and wet spun to form a fiber which is heated to crosslink the polymer chains and provide the necessary elastomeric properties. The morphology and elastomeric action of the fiber resemble spandex and rabber, but anidex generally has a lower elongation at break than these fibers. It has a round... 

MAIs may also be formed free radically when all azo sites are identical and have, therefore, the same reactivity. In this case the reaction with monomer A will be interrupted prior to the complete decomposition of all azo groups. So, Dicke and Heitz [49] partially decomposed poly(azoester)s in the presence of acrylamide. The reaction time was adjusted to a 37% decomposition of the azo groups. Surface active MAIs (M, > 10 ) consisting of hydrophobic poly(azoester) and hydrophilic poly(acrylamide) blocks were obtained (see Scheme 22) These were used for emulsion polymerization of vinyl acetate—in the polymerization they act simultaneously as emulsifiers (surface activity) and initiators (azo groups). Thus, a ternary block copolymer was synthesized fairly elegantly. 

Similarly, a cationic copolymer that exhibits efficacy in breaking oil-in-water and water-in-oil emulsions under a wide variety of conditions has been described. The cationic copolymer is a copolymer of acryloxyethyltrimethyl ammonium chloride and acrylamide [789, 790]. The preferred copolymer contains 40 to 80 mole-% acryloxyethyltrimethyl ammonium chloride. The copoljmtier is effective in a matrix that includes high percentages of oil at high temperatures. 

Homopolymers of DADMAC and copolymers of acrylamide and DADMAC are applied in the coagulation of fibers recycled from coated broke, a term used to describe a paper which cannot be sold for different reasons [ 176]. It is claimed that polymer solutions and water-in-oil emulsions containing DADMAC offer both superior performance and cost effectiveness compared to the traditional polymer additives used for this purpose [190,194]. 

Hernandez-Barajas J, Hunkeler DJ (1997) Inverse-emulsion copolymerization of acrylamide and quaternary ammonium cationic monomers with block copolymeric surfactants copolymer composition control using batch and semi-batch techniques. Polymer 38(2) 449—458... 

Glukhikh V, Graillat C, Pichot C (1987) Inverse emulsion polymerization of acrylamide. II. Synthesis and characterization of copolymers with methacrylic acid. J Polym Sci Polym Chem Ed 25(4) 1127-1161... 

The microstructure of acrylamide-sodium acrylate copolymers was determined by NMR (36). The monomer sequence distribution was found to conform to Bernouillian statistics and the reactivity ratios of both monomers were close to unity. These results which differ from those obtained for copolymers prepared in solution or emulsion (37) confirmed a polymerization process by nucleation and interparticular collisions. 

After the paper making process is complete, latexes that are useful as binders for the application of clays or CaCC>3 to paper for printing paper may be prepared using the dimer of AMS. In a typical formulation, styrene, butadiene, Me methacrylate, and acrylonitrile were emulsion polymerized in the presence of AMS dimer to obtain a copolymer latex.473 Surprisingly, the AMS dimer was used in combination with tert-dodecylmercaptan, so there may have been some residual odor. Unsaturated carboxylic acids, such as acrylic acid, or sulfonic acids, such as 2-ethylsulfonyl acrylate, or unsaturated amides, such as acrylamide, are also useful, providing the polarity necessary in these applications.474... 

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