MONOMETHYL METHACRYLATE

To prepare water-soluble polymers employing CCT, it is necessary to modify the polymerization conditions.312 439 Use of a standard batch reaction leads to hydrolysis of catalyst, changing the catalyst level over the course of the polymerization, yielding a mixture of products and poor control of the reaction. A feed or starved-feed process that adds catalyst over the course of the reaction maintains a constant catalyst level and high conversion. The approach can be applied to a range of monomers such as methacrylic acid, 2-aminoethyl methacrylate hydrochloride, 2-hy-droxyethyl methacrylate, 2-methacryloxyethyl phos-phoryl choline, glycerol monomethyl methacrylate, and 3- O-methacryloyl-1,2 5,6-di- O-isopropylidene-D-glucofuranose. 

Ute and co-workers [26] used preparative SFC followed by thermal analysis to separate isotactic and syndiotactic monomethyl-methacrylate oligomers from 19-mer and 29-mer. 

Solubilization of a graft copolymer comprising a hydrophobic poly(dodecyl-methacrylate) backbone and hydrophilic poly(ethylene glycol) monomethyl ether side chains in water/AOT/cyclohexane w/o microemulsions was rationalized in terms of the backbone dissolved in the continuous apolar phase and the side chains entrapped within the aqueous micellar cores [189],... 

A multi-MIP array has been fabricated photolithographic ally for determination of an albuterol broncholidator (Table 6) [185]. 20-pm diameter acrylic MIP beads have been synthesized by co-polymerization of the benzyl methacrylate functional monomer, MAA functional monomer and HEMA cross-linker in the propylene glycol monomethyl ether acetate porogenic solvent. Thermo-radical polymerization on a Pt electrode was initiated by AIBN. Albuterol was recognized in the... 

MC MDI MEKP MF MMA MPEG MPF NBR NDI NR OPET OPP OSA PA PAEK PAI PAN PB PBAN PBI PBN PBS PBT PC PCD PCT PCTFE PE PEC PEG PEI PEK PEN PES PET PF PFA PI PIBI PMDI PMMA PMP PO PP PPA PPC PPO PPS PPSU Methyl cellulose Methylene diphenylene diisocyanate Methyl ethyl ketone peroxide Melamine formaldehyde Methyl methacrylate Polyethylene glycol monomethyl ether Melamine-phenol-formaldehyde Nitrile butyl rubber Naphthalene diisocyanate Natural rubber Oriented polyethylene terephthalate Oriented polypropylene Olefin-modified styrene-acrylonitrile Polyamide Poly(aryl ether-ketone) Poly(amide-imide) Polyacrylonitrile Polybutylene Poly(butadiene-acrylonitrile) Polybenzimidazole Polybutylene naphthalate Poly(butadiene-styrene) Poly(butylene terephthalate) Polycarbonate Polycarbodiimide Poly(cyclohexylene-dimethylene terephthalate) Polychlorotrifluoroethylene Polyethylene Chlorinated polyethylene Poly(ethylene glycol) Poly(ether-imide) Poly(ether-ketone) Polyethylene naphthalate Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde copolymer Perfluoroalkoxy resin Polyimide Poly(isobutylene), Butyl rubber Polymeric methylene diphenylene diisocyanate Poly(methyl methacrylate) Poly(methylpentene) Polyolefins Polypropylene Polyphthalamide Chlorinated polypropylene Poly(phenylene oxide) Poly(phenylene sulfide) Poly(phenylene sulfone)... 

Usually, the fabrication of a close - packed assembly of amphiphilic molecules at an air - water interface by the Langmuir method requires suitable subphase conditions related to the ionic species and its concentration, pH, temperature and addition of another complementary solutes. In the last case, to explore the feasibility of enhancing the interactions of some amphiphilic polymers with water soluble polymers at the air - water interface, it was studied the system of poly(monomethyl itaconate) (PMMel) as subphase stabilizer of maleic anhydride - alt - stearyl methacrylate(MA-alt-StM) monolayers at the air - water interface. 

Scheme 3.6 Maleic anhydride-alt-stearyl methacrylate (MA-alt-StM), poly(monomethyl ita-conate) (PMMel), poly(stearyl methacrylate) (PStM). (From ref. [68])...

In another method Gramain and Frere 34 reacted Polyoxyethylene monomethyl ether with methacryloyl chloride under various experimental conditions. The reaction was carried out in the presence of a tertiary amine and yielded the expected macromonomers. Care was taken to avoid two possible side reactions, namely addition of HC1 to the double bond, and polymerization of the methacrylic acid derivatives. Applying appropriate reaction conditions, the authors obtained oo-methacryloyl PEO macromonomers quantitatively. 

A reaction kettle was charged with propylene glycol monomethyl ether acetate (5.1 g) and propylene glycol monomethyl ether (3.4 g) and then heated to 80°C. This mixture was next treated dropwise with the Step 1 product (2.7 g), 3-hydroxyadamantane methacrylate (4.7 g), 2-methyl-2-adamantyl methacrylate (7.0 g), y-butyrolactone methacrylate (6.8 g), and the free radical initiator V-601. Thereafter the reaction proceeded for 2 hours at 80°C and was then cooled and poured into a 720 ml mixture of hexane containing 80 ml of EtOAc. The precipitate was collected, and 18 g of product were isolated having a Mw of 10,700 daltons with a polydispersity of 1.81. 

Moad et al. functionalized a monomethylated PEG with a dithioester to prepare a RAFT macroinitiator (Mn=750, Mw/Mn=1.04). The formation of a block copolymer with either St (Mn=7800, Mw/Mn=1.07) or with benzyl methacrylate (Mn= 10,800, Mw/Mn=1.10) resulted in well-defined copolymers with no remaining PEG macroinitiator [53]. 

ISOBUTYL METHACRYLATE (97-86-9) Forms explosive mixture with air (flash point 112°F/44°C). Unless inhibited [25 ppm hydroquinone monomethyl ether, 10 ppm p-methoxy phenol (MEHQ) are recommended], forms unstable peroxides elevated temperatures may cause polymerization. Incompatible with strong acids, aliphatic amines, alkanolamines, catalysts, nitrates, strong oxidizers. 

METHACRYLIC ACID or 2-METHACRYLIC ACID or a-METHACRYLIC ACID (79-41-4) Combustible liquid (flash point 152°F/67°C oc). A reducing agent. Violent reaction with oxidizers, strong acids, alkalis. Unless inhibited (100 ppm of the monomethyl ether of hydroquinone is recommended), can polymerize violently. Polymerization can be caused by elevated temperatures, peroxides, sunlight, or hydrochloric acid. Incompatible with ammonia, amines, isocyanates, alkylene oxides, epichlorohydrin. Attacks metals, natural rubber, neoprene, nitrile, and some plastics including PVC and polyvinyl alcohol. The uninhibited monomer vapor may block vents and confined spaces by forming a solid polymer material. 

Materials. VEC was prepared by the catalyzed addition of CO2 to 3,4-epoxy-l-butene using conditions typical of that used industrially [77], then purified by vacuum distillation. Other raw materials were used as received without any additional purification. Mixed xylenes, vinyl acetate (VA), butyl acrylate (BA), butyl methacrylate (BMA), methyl methacrylate (MMA), styrene (St), and t-butyl hydroperoxide were obtained from Aldrich Chemical Company. Lupersol 575 (t-amyl peroxy (2-ethylhexanoate)) was supplied by Elf Atochem. Vazo 67 (2,2 -azobis(2-methylbutyronitrile)) was obtained from DuPont Chemical Company. Vinyl pivalate (NE05), vinyl 2-ethylhexanoate (V2EH), Tergitol NP-40 (non-ionic surfactant) and QP-300 (hydroxy ethyl cellulose) were obtained from Union Carbide Coq)oration. Aerosol OT-75 (surfactant) was obtained from Cytec. Sodium formaldehyde sulfoxylate was obtained from Henkel Corporation. Ethyl 3-ethoxy propionate (EEP), propylene glycol monomethyl ether (PM) and PM acetate (PM Ac) are Eastman Chemical Company products. 

Methacrylic acid polymerizes readily. The reaction is exothermic. The rate of reaction accelerates on heating, which may resnlt in violent rupture of closed containers. The polymerization may be inhibited with a trace quantity of hydroquinone and hydroquinone monomethyl ether (Aldrich 2006). The acid may be stored safely below its melting point. 

As mentioned earlier, an objective way of defining sensitivity is to plot the thinning of unexposed film when a film exposed to dose D is develop completely. The "sensitivity" can be defined as the dose at which thiiming is 10%. This treatment ignores the differences in contrast which may result With that caveat in mind, curves for PMMA and a copolymer of methyl methacrylate with monomethyl itaconate... 

Also aiming at biomedical applications are nanoscaled hydrogels, prepared in inverse miniemulsion. In crosslinked poly(oligo(ethylene glycol) monomethyl ether methacrylate) (POEOMA) nanogels hydrophilic dyes as the polymeric dye (rhodamine isothiocyanate (RITC) dextran) [41], rhodamine in combination with the drug doxorubicin [42] or gold nanoparticles with bovine serum albumin [43] could be encapsulated. 

Poly [methacrylie acid-co-butyl methacrylate-co-poly(ethylene glycol) monomethyl ether methacrylate] water 2005JON... 

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