Butyl methacrylate physical properties

Poly(butyleneterephthalate) (PBT), 20 31. See also PBT entries Poly(l,4-butyleneterephthalate) (PBT) chemical properties of, 20 65 crystal parameters for, 20 64t economic aspects of, 20 67-68 flame retardant, 20 64-65 mechanical properties of, 20 65-66 physical properties of, 20 64-65 principal world manufacturers of, 20 67t uses for, 20 63-64 Poly(butyl methacrylate)-5/oc -... 

A study was made of the impact of incorporation of a small amount of carboxylic monomers (acrylic acid or methacrylic acid) into the latex particles in the limited flocculation process, often encountered in the semi-batch surfactant-free emulsion polymerisation of pure butyl acrylate. The possibility of producing carboxylated polybutyl acrylate latices with a smaller particle size was evaluated. The resultant latex was characterised to gain a better understanding of the effect of the surfactant-free technique on their physical properties, e.g. zeta potential, distribution of acrylic acid or methacrylic acid in the particles, and stability towards the added salt, compared with the conventional emulsion polymerisation system stabiUsed by surfactants. 35 refs. 

Tacticity measurements can be correlated with reaction mechanisms and physical properties. For example, the incorporation of an electron donor into the polymerization catalyst formulation has been found to increase isotacticity in a propylene-1-butene copolymer [123], and the distribution of propylene and 1-butene contents as a function of molecular weight varied, depending on donor type. External donors, such as dimethox-ysilane, decrease the butene content more than internal electron donors (in this case, di-n-butyl phthalate). Mechanisms of new polymerization reactions, such as the group-transfer copolymerization of methyl methacrylate and lauryl methacrylate, can be elucidated by comparing NMR-derived structural details [124]. The presence of unanticipated peaks in the spectrum of poly(ethylene-co-norbomene) suggest the occurrence of epimerization... 

Synonyms Methacrylic Acid, Butyl Ester Butyl Methacrylate Butyl 2-Methacrylate n-Butyl alpha-Methyl Acrylate Butyl 2-Methyl-2-Propenoate Chemical Formula CH,=C(CHi)COOCHiCH,CH2CH3 (ii) Observable Characteristics — Physical State (as normally shipped) Liquid Color Colorless Odor Moderate acrylate (iii) Physical and Chemical Properties — Physical State at 15 C and 1 atm. Liquid Molecular Weight 142.2 Boiling Point at 1 atm. 325, 163, 436 Freezing Point <32, <0, <213 Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 0.8975 at 20 C Vapor (Gas) Density Not... 

A large variety of addition copolymers and terpolymers, prepared from hydroxyalkyl acrylates and/or methacrylates have been treated with MA to prepare polymers with pendent maleate residues.An addition polymer prepared from ethyl acrylate-hydroxypropyl methacrylate-styrene was treated sequentially with MA and propylene oxide.Blends of these polymers with vinyl monomers were cured with peroxides to obtain films with physical properties better than regular cured unsaturated polyesters. In another example, a styrene-butyl acrylate-hydroxyethyl methacrylate terpoly-mer was treated with MA to obtain a molding resin.When blended with styrene and cured with peroxides, the molding exhibited low shrink (less than 5%) and Rockwell hardness (M scale) 55. The same chemistry and technology have been explored for preparing radiation-curable coatings. " ... 

---