نتایج جستجو برای: ethylene1 hexene copolymerization

تعداد نتایج: 3269  

2014
Zeenat Fatima Govindaraj Senthilkumar A. Vadivel Haridoss Manikandan Devadasan Velmurugan

The title compound, C17H20O2, has an E conformation about the bridging C=C bond. The cyclo-hexene ring adopts an envelope conformation with the dimethyl-substituted C atom as the flap. Its mean plane makes a dihedral angle of 7.20 (12)° with the benzene ring. In the crystal, neighbouring mol-ecules are connected via C-H⋯O hydrogen bonds, forming chains running along the a-axis direction.

Journal: :Journal of the American Chemical Society 2010
Thomas Rünzi Dominik Fröhlich Stefan Mecking

Neutral palladium(II) phosphinesulfonato polymerization catalysts were found to be stable toward carboxylic acid moieties and to enable direct linear copolymerization of ethylene with acrylic acid.

Journal: :Chemical communications 2008
Jyongsik Jang Yura Kim

Monodisperse nanoparticles with antimicrobial polymer shells were fabricated using a seeded copolymerization; they exhibited excellent antibacterial activities against gram-positive bacteria as well as gram-negative bacteria.

2016
G. Trott P. K. Saini C. K. Williams

This article summarizes and reviews recent progress in the development of catalysts for the ring-opening copolymerization of carbon dioxide and epoxides. The copolymerization is an interesting method to add value to carbon dioxide, including from waste sources, and to reduce pollution associated with commodity polymer manufacture. The selection of the catalyst is of critical importance to contr...

Journal: :International journal of pharmaceutics 2006
K S C R dos Santos J F J Coelho P Ferreira I Pinto S G Lorenzetti E I Ferreira O Z Higa M H Gil

Chitosan based membranes to be applied on wound healing as topical drug delivery systems were developed by graft copolymerization of acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA) onto chitosan using cerium ammonium nitrate as chemical initiator. Evidence for graft copolymerization of the vinyl monomers onto chitosan was obtained by FTIR and DMTA. Swelling degree, cytotoxicity, thromb...

Journal: :polyolefins journal 2014
maria carmela sacchi simona losio paola stagnaro giorgio mancini luca boragno

some innovative solutions are proposed to the problem of the unavoidable physical migration of antioxidants from plastic films for packaging, in order to minimize the consequent undesirable effect of food contamination. in previous exploratory tests, phenolic antioxidant co-units were achieved and incorporated into polyethylene chain and now the work is extended to create new families of polyme...

Journal: :Chemical communications 2004
Leilani L Welbes Robert C Scarrow A S Borovik

Template copolymerization methods have been utilized to prepare porous materials with immobilized cobalt complexes that catalyze the hydrolytic kinetic resolution of epoxides.

Journal: :Journal of Industrial and Engineering Chemistry 2022

The oligomerization of biomass-derived light olefins offers a promising potential for the synthesis sustainable jet-fuels, which mostly comprise C10-C18 hydrocarbons. However, selectivity control reaction remains challenge. In this contribution, pentene and hexene mixtures was studied over acidic mesoporous Al–SBA–15 catalyst in continuous operation, impact different process parameters on conve...

Journal: :The Journal of the Society of Chemical Industry, Japan 1966

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