Acrylic Emulsions

Butadiene-styrene, butadiene-acrylomtrile, acrylate emulsion... 

Acrylates are primarily used to prepare emulsion and solution polymers. The emulsion polymerization process provides high yields of polymers in a form suitable for a variety of appHcations. Acrylate polymer emulsions were first used as coatings for leather in the eady 1930s and have found wide utiHty as coatings, finishes, and binders for leather, textiles, and paper. Acrylate emulsions are used in the preparation of both interior and exterior paints, door poHshes, and adhesives. Solution polymers of acrylates, frequentiy with minor concentrations of other monomers, are employed in the preparation of industrial coatings. Polymers of acryHc acid can be used as superabsorbents in disposable diapers, as well as in formulation of superior, reduced-phosphate-level detergents. 

Most of the surface sizes used in North America are modified styrene maleic anhydride (SMA) copolymers. Commercially available materials include Scripset (Monsanto/Hercules Inc.), Cypres (Cytec), Sursize (Akzo Nobel), MSA (Morton), NovaCote (Georgia Pacific), and HTl (Hopton Technologies). Styrene acrylate emulsions that are commonly used include Jetsize and Unibond (Akzo Nobel), Basoplast (BASF), and Cypres (Cytec). Other materials used as surface sizes include acrylonitrile acrylate copolymer (Basoplast, BASF), stearylated melamine resin (Sequapel, Sequa), polyurethane (Graphsize, Vining Chemicals), and diisobutylene maleic anhydride copolymers (Baysynthol, Bayer). 

Hycar, D-24 butadiene—styrene, butadiene—acrylonitrile, acrylate emulsion good fair ... 

J.J. Boon, and T. Learner, Analytical Mass Spectrometry of Artists Acrylic Emulsion Paints by Direct Temperature Resolved Mass Spectrometry and Laser Desorption Ionisation Mass Spectrometry, J. Anal. Appl. Pyrol., 64, 327 344 (2002). 

Acrylic emulsions, or better referred to as waterborne dispersion acrylic paints, were introduced in the 1950s and soon became the most used artists media because of their... 

Figure 12.10 Pyrogram of acrylic emulsion paints containing different organic pigments (a) PR5 (b) PR112 (c) PR4 (d) PY3 (e) PR 251 (f) PY74. Peak assignments 1, EA 2, MMA 3, nBA 4, 4 chloro 2 nitro benzenamine 5, 2 chloro benzenamine 6, 1 chloro 2 isocya nato benzene 7, 2 methoxy 4 nitro benzenamine 8, 2 methoxy benzenamine 9, 1 isocya nato 2 methoxy benzene 10, 1 chloro 4 nitro benzenamine 11,1 chloro 2 nitro benzene 12, 2 naphthalenol 13, 3 amino 4 methoxy N,N diethyl benzenesulfonamide 14, 4 meth oxy N,N diethyl benzenesulfonamide 15, 5 chloro 2,4 demethoxy benzenamine 16, 2,4,5 trichloro benzenamine 17, 1,3,4 trichloro benzene 18, 2 methyl benzenamine 19,...

D. Scalarone and O. Chiantore, Separation techniques forthe analysis of artists acrylic emulsion paints, J. Sep. Sci., 27, 263 274 (2004). 

Sarac, A. Yildirim, H., 2003, Effect of Initiators and Ethoxylation Degree of Non-Ionic Emulsifiers on Vinyl Acetate and Butyl Acrylate Emulsion Copolymerization in the Loop Reactor. J. Appl. Polym. Sci., 90(2), 537-543. 

O. Elizalde, J.R. Leiza and J.M. Asua, On-hne monitoring of all-acrylic emulsion polymerization reactors by Raman spectroscopy, Macromol. Symp., 206, 135-148 (2004). 

Acrylic emulsions tend to flow nicely leveling out rather than giving a three-dimensional effect sometimes offered in various oils. In the absence of a pigment, acrylic emulsions give a milky white appearance. As the water evaporates, the binder particles coalesce forming a tight film. When dried, the film is clear and becomes water insoluble. 

Kim N, Sudol ED, Friedel P, El-Aasser MS (2003) Poly (vinyl alcohol) stabilization of acrylic emulsion polymers using the miniemulsion approach. Macromolecules 36 5573-5579... 

C. additional superfine particles in the cement paste. These are materials consisting of acrylic emulsions and aqueous clay dispersions. 

Acrylonitrile (Figure 9) shows two periods of almost constant but different absolute reaction rates, followed by a period of first-order reaction rate at a high conversion. This monomer is somewhat similar to vinylidene chloride since it also does not swell in its own polymer. On the other hand acrylonitrile has a water solubility roughly three orders of magnitude higher than vinylidene chloride or styrene and even higher than methyl acrylate (see Table I). We therefore have to assume particle formation in the aqueous phase, as was done for methyl acrylate emulsions. 

Nonionic surfactant. HLB 12.9 Anti foam Acrylic emulsion... 

Water-Based Inks. Approximately 50% of all flexographic inks use water as their primary solvent and diluent. They contain vehicles based on either acrylic emulsions, or hydrosols or an alkali-soluble rosin ester having a high acid number such as partially esterified fiimurated rosin and shellac. Carboxylated acrylic polymers, usually containing some styrene, have largely replaced natural resins because they provide better abrasion and water resistance. Ammonia or other volatile amines are used to solubilize these carboxylated resins and form resin salts. The volatile alkali evaporates from the ink film, rendering the printed matter water resistant. 

Acrylic emulsion - Acrylic monomers and hydrophobes polymerized via miniemulsion (miniEP) polymerization (Gooch 2002) in an aqueous medium. 

Acrylic emulsion - The emulsion consisted of suspended crosslinked (gel) particles that are not water-soluble and form a film upon evaporation of the aqueous phase. However, the water did not evaporate quickly enough to form a continuous film on agar because agar is 95% water, and it continuously provided moisture that prevented film formation. The result was a porous barrier, but a continuous film was later obtained by dissolving dried emulsion solids in ethanol. 

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