Methacrylic acrylate latexes, styrene-ethyl

Another typical IPN pair was poly(ethyl methacrylate) for polymer I, and poly(n-butyl acrylate) for polymer II. However, all acrylic monomers, styrene, and other latex-forming monomers may be employed. If polymer II... 

The monomers, styrene, and methyl methacrylate (Aldrich) and ethyl methacrylate and n-butyl acrylate (Fluka) were purified prior to use. The crosslinking agent used in the synthesis of these semi-1-IPNs was tetraethyleneglycol dimethacrylate (Fluka). The emulsion polymerisation (90 C) was initiated with ammonium persulphate/sodium metabisulphite (both from BDH) and the resulting latex, which was prepared by a seed and feed procedure, was stabilised with sodium dioctyl sulfosuccinate (OT75 from Cyanamid). 

Copolymers containing allyl methacrylate have found application as an additive to other resin to enhance the properties of the system. For example, in one patent disclosure, an aqueous emulsion polymer was formed in water using 0.03 gm of sodium carbonate, 50 gm of methyl methacrylate, 2.0 gm of ethyl acrylate, and 0.1 gm of allyl methacrylate, and 0.40 gm of the sodium salt of an allyl Ci3-alkyl ester of sulfosuccinic acid. The polymerization was initiated with sodium persulfate and heated at 83°C for 1 hr. To this latex, 40 gm of butyl acrylate, 10 gm of styrene, 1.0 gm of allyl methacrylate, and another 0.40 gm of the above surfactant were added while polymerization continued. In a third... 

Muller and coworkers prepared disc-like polymer Janus particles from assembled films of the triblock copolymer SBM and, after hydrolysis of the ester groups into methacrylic acid units, used these as Pickering stabilizer in the soap-free emulsion polymerization of styrene and butyl acrylate [111]. Armes and coworkers described the synthesis of PMMA/siUca nanocomposite particles in aqueous alcoholic media using silica nanoparticles as stabilizer [112], extending this method to operate in water with a glycerol-modified silica sol [113, 114]. Sacanna showed that methacryloxypropyltrimethoxysilane [115] in the presence of nanosized silica led to spontaneous emulsification in water, which upon a two-step polymerization procedure afforded armored particles with an outer shell of PMMA [116]. Bon and coworkers demonstrated the preparation of armored hybrid polymer latex particles via emulsion polymerization of methyl methacrylate and ethyl methacrylate stabilized by unmodified silica nanoparticles (Ludox TM O) [117]. Performance of an additional conventional seeded emulsion polymerization step provided a straightforward route to more complex multilayered nanocomposite polymer colloids (see Fig. 14). 

Acrylonitrile/butadiene/styrene copolymer Ethyl acrylate binder, nonwoven fabrics AcrylatesA/A copolymer 2-Hydroxyethyl methacrylate Natural rubber latex Polyvinyl acetate... 

Nanosized PS latexes in the range of 1.0-3.0 pm were prepared [61] by dispersion polymerization of styrene in isopropanol water media using poly(acrylic acid) (PAA) as a steric stabilizer and 2,2-azobis isobutyronitrile (AIBN) as initiator. Styrene/acrylate monomers, acrylic acid, 2-hydroxy-ethyl methacrylate (HEMA), and dimethylaminoethyl methacrylate were copolymerized onto one of the previously synthesized latex particles to obtain the different surface functionalities. 

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