Vinyl acetate (stabilised) for synthesis | VWR

Hydrolysed versions of PVA gave polyvinyl alcohol as a water-soluble coating and binder. The polyacetal derivatives of these have provided superior bonding and electrical insulation with good stability.

Ethylene Vinyl Acetate Copolymer - DuPont USA

T1 - Synthesis, characterization and material properties of novel poly vinyl acetate grafted pectin

Polyvinyl Acetate – The Plastics Historical Society

N2 - Well-defined molecular bottlebrushes with poly(N-vinylpyrrolidone) and poly(N-vinylpyrrolidone)-bpoly( vinyl acetate) (PNVP-b-PVOAc) side chains were prepared via a combination of atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain transfer (RAFT). A macro chain transfer agent poly(2-((2- ethylxanthatepropanoyl)oxy)ethyl methacrylate) (PXPEM) was prepared by attaching xanthate chain transfer agents onto each monomeric unit of poly(2-hydroxyethyl methacrylate). Subsequently, a RAFT polymerization procedure was used to synthesize molecular bottlebrushes with PNVP side chains with controlled molecular weight and low polydispersity by grafting from the PXPEM backbone. The side chains were then chain extended with PVOAc, yielding a bottlebrush macromolecule with PNVP-b-PVOAc side chains. The comb-like shape of the chain extended bottlebrushes was confirmed by atomic force microscopy (AFM).

Synthesis of ethylidene bisformamide from vinyl acetate

AB - Well-defined molecular bottlebrushes with poly(N-vinylpyrrolidone) and poly(N-vinylpyrrolidone)-bpoly( vinyl acetate) (PNVP-b-PVOAc) side chains were prepared via a combination of atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain transfer (RAFT). A macro chain transfer agent poly(2-((2- ethylxanthatepropanoyl)oxy)ethyl methacrylate) (PXPEM) was prepared by attaching xanthate chain transfer agents onto each monomeric unit of poly(2-hydroxyethyl methacrylate). Subsequently, a RAFT polymerization procedure was used to synthesize molecular bottlebrushes with PNVP side chains with controlled molecular weight and low polydispersity by grafting from the PXPEM backbone. The side chains were then chain extended with PVOAc, yielding a bottlebrush macromolecule with PNVP-b-PVOAc side chains. The comb-like shape of the chain extended bottlebrushes was confirmed by atomic force microscopy (AFM).

Vinyl Acetate - Monomers - Monomer-Polymer

AB - Graft copolymerization of vinyl acetate (VAc) on pectin was performed using a redox initiator ceric ammonium nitrate (CAN). The grafting conditions were optimized by studying the effect of monomer, vinyl acetate (VAc) and initiator (CAN) concentrations as well as temperature and time. These variables appreciably affected the percentage of grafting and grafting efficiency of the grafted pectin (GP). GP was characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Thermal properties of GP were evaluated by differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA). DSC result showed a slight elevation in glass transition temperature (Tg) of the GP in comparison to pectin. XRD study revealed an increase in crystallinity of the pectin after grafting with VAc. This indicates that the chemical structure and morphology of pectin changes after modification. TGA exhibits an increase in thermal stability of the grafted copolymer as compared to the reference pectin.

Vinyl Acetate/Polyvinyl Acetate - IHS Markit

Well-defined molecular bottlebrushes with poly(N-vinylpyrrolidone) and poly(N-vinylpyrrolidone)-bpoly( vinyl acetate) (PNVP-b-PVOAc) side chains were prepared via a combination of atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain transfer (RAFT). A macro chain transfer agent poly(2-((2- ethylxanthatepropanoyl)oxy)ethyl methacrylate) (PXPEM) was prepared by attaching xanthate chain transfer agents onto each monomeric unit of poly(2-hydroxyethyl methacrylate). Subsequently, a RAFT polymerization procedure was used to synthesize molecular bottlebrushes with PNVP side chains with controlled molecular weight and low polydispersity by grafting from the PXPEM backbone. The side chains were then chain extended with PVOAc, yielding a bottlebrush macromolecule with PNVP-b-PVOAc side chains. The comb-like shape of the chain extended bottlebrushes was confirmed by atomic force microscopy (AFM).

Search results for vinyl acetate at Sigma-Aldrich

Vinyl acetate monomer (VAM) is used primarily to produce polyvinyl acetate (PVAc) homopolymers and copolymers. This report presents preliminary process designs and economics for VAM manufacture by three processes, as well as for VAM emulsion polymerization. The three VAM processes evaluated are the oxy-acetylation of ethylene, the reaction of acetic acid with acetylene, and a process based on synthesis gas (syngas). An emulsion polymerization process for the preparation of vinyl acetate homopolymers and copolymers is also evaluated.