Topic
Vinyl acetate
About: Vinyl acetate is a research topic. Over the lifetime, 15970 publications have been published within this topic receiving 162142 citations. The topic is also known as: Ethenyl acetate & Ethenyl ethanoate.
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TL;DR: In this article, five xanthate (Reversible Addition-Fragmentation chain Transfer (RAFT)/Macromolecular Design through Interchange of Xanthates (MADIX)) agents were synthesized, namely monofunctional, difunctional and trifunctionsal and tetrafunctional species of the form SC(O-Z)-S-R, with different leaving groups and different activating moieties some of which are completely novel.
Abstract: Summary: In this study five xanthate (Reversible Addition-Fragmentation chain Transfer (RAFT)/Macromolecular Design through Interchange of Xanthates (MADIX)) agents were synthesized, namely monofunctional, difunctional, trifunctional and tetrafunctional species of the form SC(O-Z)-S-R, with different leaving groups and different activating moieties some of which are completely novel. Polyvinyl acetates (PVAc) in the form of linear, three armed and four armed star shaped polymers were then successfully synthesized in reactions mediated by these xanthate RAFT/MADIX agents.
44 citations
Patent•
22 Dec 1983TL;DR: An optical composite cable having an outer sheath comprising a radiation cured copolymer of ethylene and vinyl acetate containing 50-85% by weight of Vinyl acetate having intimately admixed therewith a flame retarding and smoke suppressing amount of a finely divided filler mixture consisting essentially of a first filler selected from hydroxides and carbonates of di- and tri-valent metals and a second filler which is zinc borate.
Abstract: An optical composite cable having an outer sheath comprising a radiation cured copolymer of ethylene and vinyl acetate containing 50-85% by weight of vinyl acetate having intimately admixed therewith a flame retarding and smoke suppressing amount of a finely divided filler mixture consisting essentially of a first filler selected from hydroxides and carbonates of di- and tri-valent metals and a second filler which is zinc borate.
44 citations
TL;DR: In this article, a mixture of epoxidized soybean oil with 25 wt % styrene had a viscosity of 410 cP and could be free-radically polymerized with benzoyl tert-butyl peroxide at elevated temperatures.
Abstract: Epoxidized soybean oil was reacted with cinnamic acid with triphenyl phosphine as a catalyst. Cinnamic acid reacted with 79% of the available epoxy groups, and this yielded cinnamate esters of epoxidized soybean oil (ESOCA). 1H-NMR, IR, and mass spectra of the new cinnamate derivatives confirmed the proposed structure. The mass spectra revealed that the average number of cinnamate groups per triglyceride molecule was 3.33. ESOCA could be photopolymerized with UV light. ESOCA could also be homopolymerized into a soft and insoluble polymer by free-radical initiation and copolymerized with styrene, vinyl acetate, and methyl methacrylate. A mixture of ESOCA with 25 wt % styrene had a viscosity of 410 cP and could be free-radically polymerized with benzoyl tert-butyl peroxide at elevated temperatures. Differential scanning calorimetry confirmed the formation of copolymers. The ESOCA homopolymer and its copolymers all showed a first-order transition by differential scanning calorimetry around −1.5°C that was attributable to side-chain relaxations of the triglyceride fatty acids. The styrene copolymer of ESOCA showed a tan δ peak at 66.6°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3882–3888, 2003
44 citations
Patent•
04 Feb 1983
TL;DR: In this article, a heat shrinkable multi-layered laminate film comprising a core layer made of a saponified copolymer of ethylene and vinyl acetate, two outer layers made by a mixture of a copolymers of a polyethylene and polypropylene having a crystal melting point of 85° to 103° C.
Abstract: Disclosed herein is a heat-shrinkable multi-layered laminate film comprising a core layer made of a saponified copolymer of ethylene and vinyl acetate, two outer layers made of a mixture of a copolymer of ethylene and vinyl acetate having a crystal melting point of 85° to 103° C. and a copolymer of propylene and ethylene having a crystal melting point of 126° to 155° C. or a linear low-density polyethylene having a crystal melting point of 110° to 125° C. and two adhesive layers disposed between the core layer and the two outer layers, the multi-layered laminate film being excellent in gas-barrier property, oil resistance and peel-resistance of the sealed parts in the heat shrinkage and suitable for heat-shrinking packaging of foodstuffs, particularly for vacuum heat-packaging of foodstuffs.
44 citations
TL;DR: This study represents an unprecedented successful example of the positive regulation of enantioselectivity in hydroformylation of diversely substituted substrates mediated by chiral rhodium complexes derived from the α,ω-bis(phosphite)-polyether ligands 1.
Abstract: Small amounts of achiral polyether binders are employed to enhance the enantioselectivity of the hydroformylation of an array of diversely substituted substrates (increase of up to 62% ee for vinyl acetate) mediated by chiral rhodium complexes derived from the α,ω-bis(phosphite)-polyether ligands 1 To the best of our knowledge, this study represents an unprecedented successful example of the positive regulation of enantioselectivity in hydroformylations
44 citations