3047-32-3Relevant articles and documents
Preparation method and applications of acrylic acid(3-ethyl-3-oxetanyl)methyl ester
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Paragraph 0054-0056, (2020/02/10)
The invention provides a preparation method and applications of acrylic acid(3-ethyl-3-oxetanyl)methyl ester. The method comprises N parts, wherein the steps of the Nth part comprise: 1, carrying outa transesterification reaction by using methyl acrylate and 3-ethyl-3-hydroxymethyl oxetane as raw materials and using the kettle residue material of the (N-1)th part as a catalyst, and extracting methanol and methyl acrylate azeotrope in the reaction process, and 2, sequentially extracting a methyl acrylate distillate, a front distillate and a product from the material after the reaction in the step 1 of the Nth part, and remaining the kettle residue materials, and the steps of the 1th part comprise: 1) carrying out a transesterification reaction by using methyl acrylate and 3-ethyl-3-hydroxymethyl oxetane as raw materials and using mesoporous silica gel loaded organic tin as a catalyst, and extracting methanol and methyl acrylate azeotrope in the reaction process; and 2) sequentially extracting methyl acrylate distillate, front distillate and a product from the material after the reaction in the step 1) of the 1th part, and remaining kettle residue material.
Synthesis and polymerization of alkyl halide-functional cyclic carbonates
Mindemark, Jonas,Bowden, Tim
experimental part, p. 5716 - 5722 (2012/03/26)
To increase the diversity in functional aliphatic polycarbonates, a series of novel chloro- and bromo-functional six-membered cyclic carbonate monomers were synthesized. Despite asymmetry in the monomer functionalities, homopolymerization of the monomers afforded semicrystalline polycarbonates with a high tendency to crystallize from the melt and/or on precipitation from a THF solution. Melting points were found in the 90-105 °C or 120-155 °C range for polymers comprising methyl or ethyl moieties, respectively, in the backbone. The monomers were further copolymerized with trimethylene carbonate to form random copolymers. Even among some of these random copolymers elements of semicrystallinity were found as confirmed by melting endotherms in DSC. The results clearly show that the incorporation of alkyl halide functionalities in aliphatic polycarbonates may lead to materials with a high ability to form crystallites, even in random copolymers, likely driven by polar interactions due to the presence of the halide functionalities.
Fast monomers: Factors affecting the inherent reactivity of acrylate monomers in photoinitiated acrylate polymerization
Jansen, Johan F. G. A.,Dias, Aylvin A.,Dorschu, Marko,Coussens, Betty
, p. 3861 - 3873 (2007/10/03)
A systematic study on the effect of molecular structure on the photoinitiated polymerization of acrylates was undertaken. Initially, the research was focused on the effect of hydrogen bonding, and it was found that preorganization via hydrogen bonding enhances the maximum rate of polymerization (Rp). This hydrogen bonding facilitated preorganization also affected the tacticity of the resultant polymer. Next, the effect of polarity as represented by the calculated dipole moment (μcalc) of a given monomer was investigated. A direct linear correlation between Rp and the calculated Boltzmann-averaged dipole moment (μcalc) was observed. The Rp-μcalc correlation holds for pure monomers, mixtures of monomers, and even mixtures of monomers with inert solvents. This correlation enables the rational design of monomers with a required reactivity. In addition, these studies suggest that the propagation step of polymerization is influenced by hydrogen bonding while the dipole moment influences the termination rate constant. These two mechanistic explanations can be regarded as complementary factors that influence the speed of acrylate polymerization.
