Methylmethacrylate-methacrylic acid copolymers

Complete Triad Assignment of Methylmethacrylate-Methacrylic Acid Copolymers... 

Method 3.4 Determination of Compositional Analysis of Methylmethacrylate - Methacrylic Acid Copolymers. Fourier Transform C-NMR Spectroscopy [40]... 

METHOD 96 - DETERMINATION OF COMPOSITIONAL ANALYSIS OF METHYLMETHACRYLATE- METHACRYLIC ACID COPOLYMERS. FOURIER TRANSFORM 13c NMR SPECTROSCOPY."... 

This Fourier transform 13C NMR method determines the compositional analysis of methylmethacrylate-methacrylic acid copolymers. 

Klesper, E., Gronski, W., Johnsen, A. Complete Triad Assignment of Methylmethacryl-ate-Methacrylic Acid Copolymers. 4, 47-69 (1971). 

Carboxy-terminated nitrile rubber Elastomeric copolymer from ethylene and ethyl acrylate Ethylene-glycidyl methacrylate copolymer Copolymer from ethylene and methacrylic acid Copolymer from ethylene and methylmethacrylate... 

An example of the approach using MS of intact copolymer [54] is shown in Fig. 10.9 for a copolymer of methylmethacrylate/methacrylic acid (MMA/MAA) obtained by ESI-FTMS when electrosprayed with a 0.5% NH4CI, tetrahydrofuran-methanol solution. 

Formulations for acryHc copolymers involve monomers such as acryHc acid [79-10-7], methacrylic acid [79-14 ], or esters of these acids. Formation of a copolymer from a methylmethacrylate ester (3), where DVB serves as the cross-linker, gives the stmctures ... 

In an earlier paper we have reported on the photophysical behavior of alternating 2-vlnylnaphthalene - methacrylic acid or methylmethacrylate copolymers (P(2VN-alt-MA) or P(2VN-alt-MMA)). In agreement with earlier reports, the alternating copolymers... 

Several types of copolymers of methacrylic acid with various quaternary ammonium monomers, terpolymers of these copolymers with methylmethacrylate, were tested for water clarification and decolorization [186]. The polymer is an adjunct to a magnetic iron oxide employed as the primary coagulant, which is recycled after alkaline treatment. Copolymers containing phenolic or amino acid moieties as well as quaternary ammonium sites proved to be the most effective in enhancing water treatment performance with concomitant facile regeneration behaviour. 

Nielen et al. recorded the MALDI mass spectrum of a copolymer containing units of methacrylic acid (A) and methylmethacrylate (B). They observed peaks of the type B (pure MMA homosequences) and peaks of the type AB i (with various types of end-groups). Peaks with two or more A units are absent, and this is consistent with the fact that the copolymer is known to possess only 16 mole % of A. 

The monomers used for preparation of acrylic polymers vary in nature and can generally be classified as hard (such as methylmethacrylate, styrene and vinyl acetate) or soft (such as ethyl acrylate, butyl acrylate, 2-ethyl hexyl acrylate). Reactive monomers may also have hydroxyl groups (such as hydroxy ethyl acrylate). Acidic monomers such as methacrylic acid are also reactive and may be included in small amounts in order that the acid groups may enhance pigment dispersion. The practical coating systems are usually copolymers of hard and soft monomers. The polymer hardness is characterized by its glass transition temperature, Tg. The Tg (K) of the copolymer can be estimated from the Tg of the individual Tg (K) of the homopolymers with weight fractions and Wj,... 

Figure 3.20 Pyrograms of polymethylmethacrylates and some acid copolymers after propylation. Polymethylmethacrylate containing the following amoimts of copolymerised acid A 10% methacrylic B 1% methacrylic acid C 10% acrylic acid D 1 % acrylic acid E no acid elution times methylmethacrylate 9 min, propyl acrylate 15 min, propylmethacrylate 28 min. Reprinted with permission from J.L. Sharp and G. Paterson, Analyst, 1986, 105, 1250, 517. 1986, RSC) [41]...

Moist SCL Low moisture content less than 40% Poly(hydroxyethylmethacrylate) Middle moisture content 40-60% Copolymer of hydroxyethylmethacrylate, A -vinylpyrrolidone, methacrylic acid, and methylmethacrylate Copolymer of methylmethacrylate and glycerol methacrylate High moisture content more than 60% Copolymer of A -vinylpyrrolidone, dimethylacrylamide, and methylmethacrylate... 

Hill and co-workers [160] utilised ozonolysis in their investigation of a bntadiene-methyl methacrylate copolymer. The principal products were succinic acid, snccindialdehyde and dicarboxylic acids containing several methylmethacrylate residnes. The percentage of butadiene (9.2%) recovered as snccinic acid and snccindialdehyde provided a measure of the 1,4-butadiene-l,4-butadiene linkages in the copolymers, and the percentage of methylmethacrylate units (51%) recovered as trimethyl 2-methyl-butane-l,2,4-tricarboxylate (4) n = l, provided a measure of the methylmethacrylate units in the middle of bntadiene-methacrylate-butadiene triads. 

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