3-Hydroxy-2-methylpropionamide, an important intermediate in the synthesis of methyl methacrylate, has been obtained with excellent conversion and high selectivity from acrylamide by a tandem hydroformylation-hydrogenation sequence catalysed by Rh/PPh3 and Raney Ni, respectively.

The role of cobalt(II) complexes containing 2-formylpyrrolyl chelating ligands and phosphine ligands combined with a bromo-alkyl ester, an alkyl bromide or an azo compound in the formation of suitable initiator systems for vinyl monomer controlled radical polymerization was studied. The formation of syndiotactic-rich (Pr>0.7) poly(methyl methacrylate) (PMMA) and atactic (Pr=0.49) poly(styrene) ...

This article describes the voltammetric behaviour of RuCl(2)(PPh(3))(3) in a methyl methacrylate (MMA) solution. Acquiring this type of information is only possible when the ohmic resistance can be kept sufficiently low. Therefore, the conductivity study of pure methyl methacrylate and a tetrabutylammonium tetrafluoroborate (TBABF(4)) methyl methacrylate solution has been described as well. Imp...

Well-defined sterically stabilized diblock copolymer nanoparticles of 29 nm diameter are prepared by RAFT aqueous emulsion polymerization methyl methacrylate using a dithiobenzoate-capped poly(glycerol monomethacrylate) precursor. These evaluated as dispersant for the preparation organic crystalline microparticles via ball milling. This is exemplified azoxystrobin, which broad-spectrum fungicid...

A mixture of 50-60% monomeric methyl methacrylate and 40-50% monomeric 2-hydroxypropyl methacrylate was supplemented with 1.5% benzoyl peroxide (catalyst) and 1.5% N,N-dimethylaniline (accelerator) and injected into glutaraldehyde-perfusion fixed rat hypophyseal and other endocrine organ blood vessels and biliary tracts. This injection medium rapidly polymerized at room temperature and did not ...

The dielectric relaxation of benzyl alcohol substitutents (benzyl alcohol, m-methylbenzyl alcohol and m-nitrobenzyl alcohol) with methyl methacrylate and butyl methacrylate in dilute solution of carbon tetrachloride is measured at 9.37 GHz using Frequency domain (X-band) technique. Different dielectric parameters like dielectric constant (ε'), dielectric loss factor (ε'') at Microwave frequency...

Microfluidic devices were developed that integrate the synthesis of well defined block copolymers and dynamic light scattering (DLS) measurement of their micelle formation. These metal devices were designed to operate in contact with organic solvents and elevated temperatures for long periods, and thus were capable of continuous in-channel atom transfer radical polymerization (ATRP) of styrene ...

Much research has been done on means to minimize harmful side effects and to maintain drug levels in a therapeutically desirable range by employing porous structures as an inert matrix to provide controlled drug release.1-3) We have studied the employment of porous microspheres in the preparation of capsules containing a drug, and the drug release profiles from such porous microspheres. In prev...

The size and stability of p(PEG)- b -p(MMA) block copolymer particles is tuned. Robust between 33–176 nm are formed the use a PEG methacrylate monomer with methyl ether end group results in most well defined stable particles.

Poly(methyl methacrylate) grafted imogolite clay nanotubes were fabricated via activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) by designing a water-soluble amphiphilic ATRP initiator that can adsorb onto imogolite surface in an aqueous solution.