Methyl methacrylate-methacrylic acid styrene

Some of the earliest work on the chemical inclusion of organotin into polymers was by Russian scientists in the late 1950s and early 1960s. Kochkin et al. in 1959 synthesized niethylstannic methacrylate and made homopolymers and copolymers of it through reaction with acrylonibUe, methyl methacrylate, methacrylic acid, styrene, divinylbenzene, pentaerythritol ester, methacrylic acid, and cyclopendiene. The organotin ester was made from reaction of dialkyl or diaryl stannic oxide with the respective acids, 13. ... 

Polymerization and Spinning Solvent. Dimethyl sulfoxide is used as a solvent for the polymerization of acrylonitrile and other vinyl monomers, eg, methyl methacrylate and styrene (82,83). The low incidence of transfer from the growing chain to DMSO leads to high molecular weights. Copolymerization reactions of acrylonitrile with other vinyl monomers are also mn in DMSO. Monomer mixtures of acrylonitrile, styrene, vinyUdene chloride, methallylsulfonic acid, styrenesulfonic acid, etc, are polymerized in DMSO—water (84). In some cases, the fibers are spun from the reaction solutions into DMSO—water baths. 

According to their recent reports [11], 5 provides livingness of polymerization for styrene (ST) and methyl methacrylic acid (MA). Irrespective of the type of monomer, the initiator efficiency / was over 0.9, and the polydis-persity index, Mw/Mn (Mw weight-average molecular weight, Mn number-average molecular weight), was close to unity (approximately 1.2). The polymerization rate was very low (on the order of an hour), i.e., a very slow... 

Fig. 23. Polymerization of monomers in masticating polystyrene and polymethyl methacrylate. Curves 1-6 1 ml methacrylic acid, styrene, methyl methacrylate, ethyl acrylate, acrylonitrile, and vinyl acetate, respectively, in 3 g polystyrene. Curves 7-12 2 ml methacrylic acid, methyl methacrylate, acrylonitrile, ethyl acrylate, styrene, and vinyl acetate, respectively, in 3g polymethyl methacrylate. The limiting viscosity numbers for points along Curves 2 and 3...

It was found that when grafting methyl methacrylate or styrene to rubber, the branches of polymethyl methacrylate or polystyrene are much smaller than was expected, while almost 50 per cent more vinyl polymer was bound than predicted (8, 27, 129, 130, 160, 161). The length of the side branches was determined after oxidation of the rubber, usually by ozonolysis (28, 71, 131) or by perbenzoic acid oxidation followed by periodate treatment (168). 

Methods have been developed for the analysis of hydrocarbon polymers (e.g. styrene, butadiene and isoprene) by MALDI-TOF-MS, through the attachment of Ag(acac) to matrices of tran5-3-indoleacrylic acid or l,4-bis(2-(5-phenyloxazolyl))benzene . SUver-cationized molecular ions were produced for polymers of styrene, butadiene and isoprene up to mass 125,000 Da. For lower-mass styrene polymers, the resolved oligomer molecular ions provide information concerning the end group. This technique permits the analysis of many commercially important materials such as acrylonitrile-butadiene-styrene (ABS), styrene-acrylonitrile, styrene-methyl methacrylate and styrene-isoprene copolymers. The use of the salts of transition metals other than Ag, Cu or Pd as the cationizing agents fails to cationize polystyrenes in MALDI. The ability of MALDI to reduce metals to the oxidation state 4-1 is critically important to polystyrene cationization, as without this reduction MALDI tends to fail to form polystyrene-metal cations. Cu(acac)2 was used for the verification of the above . 

Copolymers of acryloyl chloride with methyl methacrylate and styrene have been synthesized, compositional control has been achieved, and the acid chloride side groups have been successfully esterified with methyl-p-CD. One caveat to this method is the difficultly controlling the attachment of just one methyl-p-CD on the reactive side-group, since there are still many hydroxyl groups present on the methyl-P-CD. This then causes methyl-P-CD to act as a crosslinker reacting with several acid chlorides on the copolymer, thereby preventing the methyl-p-CD-incorporated material to be further processed via solution or thermal means. 

Branched acrylic polymers based upon the copolymerization of acrylates and related monomers with methacrylate macromonomers are particularly useful in waterborne coatings. A macromonomer based upon isobutyl methacrylate, 2-ethylhexyl methacrylate, and 2-hydroxyethyl methacrylate was copolymerized with butyl acrylate, 2-hydroxyethyl acrylate, meth-acrylic acid, methyl methacrylate, and styrene.518 After neutralization with dimethylethanolamine or inorganic bases, the polymer could be cross-linked with melamine resin on a metal surface. These systems may be used for either pigmented layers or clear coats. 

Copolymer compositions were determined by a high resolution nuclear magnetic resonance spectrometer (180 HMz). Copolymers of methyl methacrylate and styrene were dissolved in deuterated chloroform for the analysis. Deuterated pyridine was the solvent for the methyl methacrylate - methacrylic acid copolymers. Elemental analysis was also used in copolymer composition analysis to complement the NMR data. 

A series of close-to-spherical styrene/DVB resins of varying particle size and pore diameter were employed as supports for non-covalent adsorptive attachment of CALB by hydrophobic interaction. The effect of matrix particle and pore size on CALB i) adsorption isotherms, ii) fraction of active sites, iii) distribution within supports, and iv) catalytic activity for s-CL ring-opening polymerizations and adipic acid/l,8-octanediol polycondensations is reported. Important differences in the above for CALB immobilized on methyl methacrylate and styrene/DVB resins were found. The lessons learned herein provide a basis to others that seek to design optimal immobilized enzyme catalysts for low molar mass and polymerization reactions. 

IV. The fourth type includes polymerization in the presence of ionic macromolecular emulsifier. In this case, monomers such as styrene, methyl methacrylate, methacrylic acid, acrylonitrle, etc. were polymerized with the neutralized epoxy-g-(methacrylic acid-styrene) copolymer as emulsifier. The initiator used was a redox system composed of sodium formaldehyde sulfoxylate-tert. butyl hydroperoxide. The base used for neutralization was dimethyl ethanol amine. 

Acrylic resin Acrylonitrilefbutadiene/styrene copolymer Bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite Butadiene/acrylonitrile copolymer EthyleneA/A copolymer Methoxyethyl acrylate Methyl methacrylate butadiene styrene terpolymer Polyethylene elastomer, chlorinated 2-Propenoic acid, 2-methylmethyl ester, polymer with 1,3-butadiene and butyl 2-propenoate impact modifier, PVC rigid EVA/PVC graft polymer impact modifier, recycled polyamides EPDM, maleated impact modifier, thermoplastics Butadiene/acrylonitrile copolymer impact strength modifier PEG-6 trimethylolpropane impact-resistance lights Polyester carbonate resin impact-resistance, lights Polyester carbonate resin impeller... 

Acetal copolymer Methyl methacrylate butadiene styrene terpolymer Polystyrene toys, high-strength Styrene/acrylates copolymer trace element, animal feeds Cobalt carbonate (ous) trace element, soils Cobalt carbonate (ous) trace metal analysis Perchloric acid trace metal removal... 

Three-component polypropylene, 1-99 wt% PP, blends comprised 1. either acidified PP, its mixture with PP, or a mixture of PP with carboxylic acid-modified EPR 2. 99-1 wt% of maleated polymer [e.g., poly(methyl methacrylate-co-styrene-co-MA] and 3. epoxy group-containing copolymer [e.g., 0.1-300 phr of ethylene-methyl methacrylate-glycidyl methacrylate = 65-15-20 or ethylene-vinyl acetate-glycidyl methacrylate = 85-5-10]. The blends were used to mold car bumpers and fenders, with good stiffness and low-temperature impact resistance ... 

Acrylate styrene acrylonitrile Acrylate modified styrene acrylonitrile Acrylic acid ester rubber Acrylonitrile butadiene rubber or nitrile butadiene rubber Acrylonitrile butadiene styrene Acrylonitrile styrene/chlorinated polyethylene Acrylonitrile methyl methacrylate Acrylonitrile styrene/EPR rubber or, acrylonitrile ethylene propylene styrene Alpha methyl styrene Atactic polypropylene Butadiene rubber or, cis-1,4-polybutadiene rubber or, polybutadiene rubber Butadiene styrene block copolymer Butyl rubber Bulk molding compound Casein formaldehyde Cellulose acetate Cellulose acetate butyrate Cellulose acetate propionate Cellulose nitrate Chlorinated polyethylene Chlorinated polyvinyl chloride Chloro-polyethylene or, chlorinated polyethylene. 

Acrylic acid-methyl methacrylate copolymer esterified to an unknown degree to methyl acrylate Acrylic acid-styrene copolymer esterified to an unknown degree to methyl acrylate Ethylene-methacrylic acid copolymer neutralized to an unknown degree to sodium methacrylate Isophthalic acid-ethylene glycol copolymer post-treated to form the diallyl ester 2-Propenoic acid, 2-methyl-, methyl ester, polymer with 2-propenoic acid, methyl ester 2-Propenoic acid, poljrmer with ethenylbenzene, methyl ester 2-Propenoic acid, 2-methyl-, polymer with ethene, sodium salt 1,3-Benzenedicarboxylic acid, polymer with 1,2-ethanediol, di-2-propenyl ester... 

Experimental Reagents and Instrumentation. Tetrachloroauric acid (HAUCI4,) tetraoctylammonium bromide (N[CgHj7]4Br,) dodecanethiol, sodium borohydride, and sodium metal were used as received from Sigma Chemical Co. Water and toluene were deoxygenated by reflux and distillation under an inert atmosphere. The monomers phenylmethyldichlorosilane (Gelest,) methyl methacrylate, and styrene (Aldrich) were purified by fractional distillation under vacuum. The initiator, azobisisobutylnitrile (AIBN,) was recrystallized from methanol before use. 

The interpolymers from natural rubber plus monomer vary widely methyl methacrylate and styrene give a soluble product whereas chloroprene, acrylonitrile and methacrylic acid produce a gel containing the polymerized monomer. Extensive investigations were carried out on maleic anhydride [15, 99-101] for the reinforcement of rubber and because of the peculiar reaction. Table 5.15 is a summary of the most important results obtained using natural and synthetic rubbers with different monomers. 

One practical disadvantage of these systems lies in the fact that relatively high concentrations of Lewis acids are needed to achieve alternation. Thus methyl methacrylate and styrene alternate perfectly with azodiisobutyronitrile initiation at 50°C when the molar ratio of ZnCh to methyl methacrylate is 0.4. Alternation is less exact, however, when this ratio is 0.25. Alkyl boron halides like ethyl boron dichloride are effective at lower concentrations and act also as initiators if oxygen is present. 

Poly(methyl methacrylate co styrene) n Poly (2-propenoic acid, 2-cyano-, methyl ester-co-ethenyl benzene). 

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