Methyl methacrylate-co-n-butyl

Rubber-Toughened Acrylic Molding Materials. The materials were prepared by blending the toughening particles with Diakon LG156 (supplied by ICI Acrylics), which is poly[(methyl methacrylate)-co-(n-butyl acrylate)] (92... 

N. Vail, J. Barlow, J. Beaman, H. Marcus and D. Bourell, Development of a poly(methyl methacrylate co N-butyl methacrylate) copolymer binder system, Journal of Applied Polymer Science, 52 [6], 789-812 (1994). 

The 80/20 (wt/wt) methyl methacrylate (MMA) n-butyl acrylate (BA) macromonomer was prepared in the following manner. To a 3000-mL flask 440.1 g MMA, 200.0 g BA, and 150.0 g methyl ethyl ketone (MEK) were added. The mixture was stirred and heated to reflux under a nitrogen blanket. After a 10-min hold, 30.0 g MEK, 0.140 g Vazo-67, and 0.050 g Co(dimethylglyoxime-BF2)2 were added to the flask. After a 5-min hold, 359.9 g MMA, 200.0 g MEK, and 1.90 g Vazo-67 were added over a 3.5-h period. The mixture was held 1 h at reflux after the feed. Subsequently, 150.0 g MEK and 1.00 g Vazo-52 were feed over an hour. The mixture was held for 1 h at reflux. The mixture was then allowed to cool to room temperature. A more detailed procedure and the Co(dimethylglyoxime-BF2)2 synthesis are given in reference 18. 

H5P, an a-methylstyrene derivative, seems to have a low ceiling temperature and consequently did not homopolymerize but underwent copolymerization with styrene, methyl methacrylate, and n-butyl acrylate. Based on the homopolymerization attempts, it appears that 2H5P is present as isolated monomer units in these copolymers. The co-polymerization parameters of 2H5V and 2H5P with styrene, methyl methacrylate, and n-butyl acrylate have also been determined. The results are shown in Figure 3 The copolymerization experiments were done to 5 conversions. 

Many investigators have studied polymer surfaces for years [74,75] and have been successful in determining combinations of two or more valence states [76,77] by the mathematical process of deconvoluting the peak assignments [78]. It was only recently that latexes were examined by ESCA. Davies et al. [79] prepared a series of homopolymers of poly(methyl methacrylate) (PMMA) and poly(butyl methacrylate) (PBMA), and also poly[(methyl methacrylate)-co-(butyl methacrylate)] (PMMA-PBMA), by surfactant-free emulsion polymerization. It was found that the surface of the latex film was rich in PMMA, which may possibly be explained by the reactivity ratios for the MMA/BMA system (ri = 0.52 and rj = 2.11) [80], Recently, Arora et al. carried out angle-dependent ESCA studies on a series of films prepared from core-shell ionomeric latexes (with a polystyrene core and a styrene/n-butyl acrylate/ methacrylic acid copolymer shell) to determine the distribution of carboxyl groups in the films [81,82]. 

BA, butyl acrylate MAA, methacrylic acid, BMA, n-butyl methacrylate fiMA, /-butyl methacrylate HEMA, 2-hydroxyethyl methacrylate MMA-MAA, methyl methacrylate-co-methacrylic acid... 

Figure 4.4 Experimentally determined monomer fractions in latex particles as a function of the monomer fraction in the monomer droplets. Q methyl acrylate-vinyl acetate in a poly-(MA-VAc) copolymer latex. A methyl acrylate- styrene, n-butyl acrylate-styrene, methyl acrylate-n-butyl acrylate, methyl acrylate-methyl methacrylate and methyl methacrylate-styrene on several (co)polymer seeds. The solid line represents the prediction by Equation 4.13 (Verdurmen-Noel, 1994).

Methyl methacrylate-co-2,2,6,6-tetramethyl-piperidinyl methacrylate Methylthiomethyl methacrylate n-Propyl methacrylate Tetrahydrofurfuryl methacrylate Vinyl chloride Acetonyl methactylate n-Butyl methacrylate Cyclohexyl methacrylate Ethyl methacrylate n-Propyl methacrylate Tetrahydrofurfuryl methacrylate Tetrahydropyranyl-2-methyl methacrylate Acetonyl methacrylate Acrylonitrile-co-melliyl methacrylate Butyl methacrylate-co-methyl methacrylate Caprolactone... 

Materials. Methyl methacrylate was a product of Rohm and Haas, and t-butyl methacrylate was obtained from Polvsciences, Inc. Potassium trimethylsilanolate (PTMS) was obtained from Petrarch Systems, Inc. Anhydrous lithium iodide, trimethylsilyl iodide (TMSI), and n-butyllit.ium (in hexanes) were purchased from Aldrich Chemical Co. 

Fig. 6.24. Electrochromatographic separation of aromatic acids (a) and anilines (b) on monolithic capillary columns. (Reprinted with permission from [14]. Copyright 2000 Elsevier). Conditions monolithic poly(butyl methacrylate-co-ethylene dimethacrylate) stationary phase with 0.3 wt. % 2-acrylamido-2-methyl-l-propanesulfonic acid pore size, 750 nm UV detection at 215 nm voltage, 25 kV pressure in vials, 0.2 MPa injection, 5 kV for 3 s. (a) capillary column, 100 pm i.d. x 30 cm (25 cm active length) mobile phase, 60 40 vol./vol mixture of acetonitrile and 5 mmol/L phosphate buffer pH 2.4. Peaks 3,5-dihydroxybenzoic acid (1), 4-hydroxybenzoic acid (2), benzoic acid (3), 2-toluic acid (4), 4-chlorobenzoic acid (5), 4-bromobenzoic acid (6), 4-iodobenzoic acid (7). (b) capillary column, 100 pm i.d. x 28 cm (25 cm active length) mobile phase, 80 20 vol./vol mixture of acetonitrile and 10 mmol/L NaOH pH 12. Peaks 2-aminopyridine (1), 1,3,5-collidine (2), aniline (3), N-ethylaniline (4), N-butylaniline (5).

Fig. 7.19 Graph of charge-to-mass ratio versus ionic content for particles of a blend of styrene-co-N-methyl-4-vinyl-pyridinium toluenesulphonate iono-mer with a styrene-co-butyl methacrylate copolymer, charged by rolling with coated beads. Reprinted with permission from Diaz et al. (1992). Copyright of the American Chemical Society.

Some other interesting copolymers having properties of PVC thermal stabUizers, like poly[Af-(a-benzothiazolonylmethyl)methacrylate-co-methyl methacrylate] [45], of flame retardants like a terpolymer of styrene, acrylonitrile and a polymerizable perbrominated phenol [76] or poly[4-methacryloyloxy-2,3,5,6-tetrabromobenzyldi-phenyl phosphonate-co-methyl methacrylate] [104] (93), bioddes, mostly copolymers of monomers containing tris(n-butyl tin) or triphenyl tin moieties and alkyl acrylates, methacrylates, vinyl acetate, acrylonitrile, styrene or A-vinylpyrrolidone [105], e.g. a terpolymer of styrene, MMA and tri(n-butyl tin) itaconate [106] (94),... 

PCP = polychloroprene, PDMS = polydimethylsiloxane, PE = polyethylene, B-PE = branched polyethylene, L-PE = linear polyethylene, PEO = poly(ethylene oxide), PE VAc = poly(ethylene-co-vinyl acetate), PIB = polyisobutylene, PMMA = poly(methyl methacrylate), PnBMA = poly(n-butyl methacrylate), PiBMA = poly(isobutyl methacrylate), PtBMA = poly(t-butyl methacrylate), PP = polypropylene, PS = polystyrene, PTMO = poly(tetramethylene oxide) or polytetrahydrofuran, PVAc = poly(vinyl acetate). 

Poly(acrylate-ien-urethane-urea), 256-260 Poly (acrylic acid-ABc-vinyl alcohol), 264 Polyacrylonitrile, 3 Polybutadiene, 3, 273, 310 Poly(butadiene-co-methacrylic acid), 165 Poly(butadiene- -styrene), 79ff Poly(butadiene-ipn-styrene), 239ff Poly(n-butyl acrylate-ipn-methyl methacrylate), 267 Polycarbonate, 42... 

Figure 1.4 Nanofibers of n-butyl acrylate/methyl methacrylate copolymer P[BA-co-MMA] were produced by electrospinning. Diameter vs. dielectric constant of the solvent. Reprinted from Ref. 24, Copyright 2013, John Wiley and Sons.

A quantitative thermal analysis of a series of taperedblock copolymers was carried out wi poly(n-butyl BiOrylaXe-block-gradient-n-batyl acylate-co-methyl methacrylate) [37], i.e., one of the blocks was copolymerized from both components with changing composition from one end to the other. Such block copolymers show, in addition to the size and strain effects, a partial solubility. A third phase due to the gradient in concentration was not discovered for the analyzed samples. 

Buzin AI, Pyda M, Matyjaszewski K, Wunderlich B (2002) Calorimetric Study of Block-copolymers of Poly(n-butyl Acrylate) and Gradient Poly(n-butyl Acrylate-co-methyl Methacrylate). Polymer 43 5563-5569. 

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