Methyl methacrylate butadiene

Latices of butadiene-methyl methacrylate copolymer have been used in paper and board finishes. 

Besides the MBS materials, related terpolymers have been prepared. These include materials prepared by terpolymerising methyl methacrylate, acrylonitrile and styrene in the presence of polybutadiene (Toyolac, Hamano 500) methyl methacrylate, acrylonitrile and styrene in the presence of a butadiene-methyl methacrylate copolymer (XT Resin), and methylacrylate, styrene and acrylonitrile on to a butadiene-styrene copolymer. 

Penultimate effects have been observed for many comonomer pairs. Among these are the radical copolymerizations of styrene-fumaronitrile, styrene-diethyl fumarate, ethyl methacrylate-styrene, methyl methacrylate l-vinylpyridine, methyl acrylate-1,3-butadiene, methyl methacrylate-methyl acrylate, styrene-dimethyl itaconate, hexafluoroisobutylene-vinyl acetate, 2,4-dicyano-l-butene-isoprene, and other comonomer pairs [Barb, 1953 Brown and Fujimori, 1987 Buback et al., 2001 Burke et al., 1994a,b, 1995 Cowie et al., 1990 Davis et al., 1990 Fordyce and Ham, 1951 Fukuda et al., 2002 Guyot and Guillot, 1967 Hecht and Ojha, 1969 Hill et al., 1982, 1985 Ma et al., 2001 Motoc et al., 1978 Natansohn et al., 1978 Prementine and Tirrell, 1987 Rounsefell and Pittman, 1979 Van Der Meer et al., 1979 Wu et al., 1990 Yee et al., 2001 Zetterlund et al., 2002]. Although ionic copolymerizations have not been as extensively studied, penultimate effects have been found in some cases. Thus in the anionic polymerization of styrene t-vinylpyri-dine, 4-vinylpyridine adds faster to chains ending in 4-vinylpyridine if the penultimate unit is styrene [Lee et al., 1963]. 

The importance of the graft handle on a 62/38 butadiene-methyl methacrylate rubber can be illustrated by its effect on the optical properties of the polyblend. From Table II it can be seen that the reduction in percent haze is dramatic for an increase of methyl methacrylate graft from 0 to 27% by weight, while there is no apparent change in the light transmission. The blend resin in this polyblend system was an 88-12 methyl methacrylate-styrene copolymer, and the total resin to backbone rubber ratio was kept at 2.5-1.0. The measured refractive indices are included for each component (the graft rubber and the blend resin). The difference in refractive index amounts to no more than 0.004 unit for any of the components. 

The participation of Diels-Alder type intermediates in polymerization was considered by Hill et ah (26) in 1939 as a result of the elucidation of the structures of the butadiene homopolymer and the butadiene-methyl methacrylate copolymer resulting from thermal polymerization in emulsion. The considerable amount of alternating 1,4 and 1,2 structures in the homopolymer and the predominantly 1,4 structure of the butadiene in the copolymer which contained more than 50% alternating units of butadiene and methyl methacrylate led to the proposal that the reaction proceeded through a Diels-Alder dimer complex or activated complex. Chain initiation involved a thermal reaction in which the activated com-... 

The influence of UV light on the course of copol3rmerization, i.e. on copolymer composition, is dramatically shown in the ter-polymerization of butadiene, methyl methacrylate and acrylonitrile in the presence of ethylaluminum dichloride. The reaction actually involves the copolymerization of two complexes, i.e. 

When a mixture of butadiene and methyl methacrylate is heated at 90 °C with an aqueous suspension of kraft wood pulp containing a small amount of nonionic surfactant and in the absence of a catalyst, essentially equimolar alternating butadiene-methyl methacrylate copolymer is grafted on the cellulose when the monomer charge contains 20-50 mole % methyl methacrylate (21). 

PVC MBS Butadiene methyl methacrylate styrene copolymer, MBS as Eeuer, 1958... 

Methyl methacrylate has been copolymerized with a wide variety of other monomers, such as acrylates, acrylonitrile, styrene, and butadiene. Copolymerization with styrene gives a material with improved melt-flow characteristics. Copolymerization with either butadiene or acrylonitrile, or blending PMMA with SBR, improves impact resistance. Butadiene-methyl methacrylate copolymer has been used in paper and board finishes. 

Butadiene-acrylonitrile interpolymer Butadiene-methyl-methacrylate — 8200 9,800 — — — — —... 

Fig. 144. The time lag in setting up a steadystateof flow. 0,argoninbutadiene-methyl-methacrylate interpolymer x, nitrogen in butadiene-methyl-methacrylate interpolymer.

Hg-butadiene-acrylo-nitrile interpolymer N -butadiene-acrylo-nitrile interpolymer H,-neoprene A-neoprene Ns-neoprene N -butadiene-methyl-methacrylate interpolymer... 

SBM-triblock copolymer (poly(styrene-butadiene-methyl methacrylate)) ... 

SBM Styrene-butadiene-methyl methacrylate triblock copolymer... 

Raman spectroscopy has been applied to the determination of unsaturation in styrene-butadiene-methyl methacrylate terpolymers [96, 105,106]. 

Hill and co-workers [155] utilised ozonolysis in their investigation of a butadiene methyl methacrylate copolymer. The principal products were succinic acid. 

---