Results 71 to 80 of about 360,310 (205)
Copolymerization of 4-methyl-1-pentene with α,ω-alkenols
eXPRESS Polymer Letters, 2016 Copolymerization of 4-methyl-1-pentene (4M1P) with 9-decen-1-ol (9D1O) or 4-penten-1-ol (4P1O) was conducted by using metallocene catalysts. The activity could be improved under the higher polymerization temperature. The dyad distribution of poly(4M1P-co-
W. Wang +4 more
doaj +1 more source
, 2006 The regiochemistry of propene insertion promoted by metallocene and postmetallocene Column 4 metal catalysts is investigated with quantum mechanics techniques.
CORREA, ANDREA +2 more
core +1 more source
Potential of Thermoset Polyolefins for FRP Concrete Reinforcing Bars
Polymer Composites, Volume 47, Issue 18, Page 16155-16176, 20 September 2026.Overview of XLPO and pDCPD resins for FRP reinforcing bars, highlighting resin chemistry, key performance characteristics, fiber sizing interactions, and principal degradation mechanisms in concrete environments. ABSTRACT Although thermoset polyolefins offer resistance to hydrolytic degradation and favorable processing characteristics, their potential ...
Osama Omar +5 more
wiley +1 more source
Advances in Materials Science and Engineering, 2018 The influence of multiwalled carbon nanotubes (MWCNTs) on the properties of polyethylene prepared by in situ polymerization using metallocene catalyst (Cp2ZrCl2) in combination with methylaluminoxane has been studied.
Mamdouh A. Al-Harthi +1 more
doaj +1 more source
Propylene Polymerization Catalyzed by Metallocene/Methylaluminoxane Systems on Rice Husk Ash
Molecules, 2019 Silica generated from agricultural waste is more cost effective and environmentally friendly than silica from traditional commercial processes. In this study, spherical silica particles with a diameter of around 120 nm were fabricated from rice husk ash (
Kuo-Tseng Li, Cheng-Ni Yang
doaj +1 more source
[2 + 2 + 2] Cycloaddition Reactions Using 3d Metal Catalysts: Photo‐ and Electrocatalytic Systems
ChemistryEurope, Volume 4, Issue 9, September 2026.Turn on the switches: light and electricity reprograming of [2 + 2 + 2] cyclotrimerizations. This perspective maps energy‐tunable 3d metal catalysis that enables the assembly of carbo‐ and heteroaromatics from alkynes and nitriles under mild, sustainable reaction conditions, unveiling the opportunities recently provided by photo‐ and electrocatalysis ...
Benedikt N. Baumann, Marko Hapke
wiley +1 more source
Tailoring supported olefin polymerisation catalysts using non-equilibrium plasmas [PDF]
, 1999 Supported olefin polymerisation catalysts are used to produce more than 20 million tonnes of polyethylene a year. In this thesis, the application of non- equilibrium plasmas to Phillips, Ziegler-Natta, and metallocene catalysts is described. A Cr(acetate)
Godfrey, Simon Paul
core
Key intermediates in metallocene-and post-metallocene-catalyzed polymerization
, 2007 The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2
Semikolenova, N. V. +4 more
core +1 more source
Design and synthesis of new C1 and C2-symmetric ansa-metallocene catalysts for isotactic-polypropylene formation [PDF]
, 2006 Several ansa C1-symmetric cyclopentadienyl-fluorenyl metallocenes based on zirconium have been prepared with different substituents at position 3 on the cyclopentadienyl ring.
Al-Bahily, Khalid A
core
Polymerization of Allyltrimethylisilane and 4-Methyl-1-Pentene by Using Metallocene Catalysts. [PDF]
Polymers (Basel), 2023 Wang W, Ren M, Hou L, Qu S, Li X, Guo Z.
europepmc +1 more source