Results 91 to 100 of about 20,042 (215)

Effect of Immobilization Methods on the Production of Polyethylene-cellulose Biocomposites via Ethylene Polymerization with Metallocene/MAO Catalyst

Bulletin of Chemical Reaction Engineering & Catalysis, 2020
Polyethylene-cellulose biocomposites were synthesized here via the ethylene polymerization with metallocene as a catalyst along with methylaluminoxane (MAO) as a cocatalyst.
Praonapa Tumawong, Ekrachan Chaichana, Bunjerd Jongsomjit   +2 more
doaj   +1 more source

Alargamento da distribuição de massa molar de polímeros sintetizados com catalisadores metalocênicos dual-site Broadening of molecular weight distribution of polymers synthesized by metallocene-based dual-site catalysts

Química Nova, 2008
The main topics related to the use of dual-site catalysts in the production of polymers with broad molecular weight distribution are reviewed. The polymerization using dual-site catalysts is more economical and allows to produce a higher quality product ...
João H. Z. dos Santos, Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi   +3 more
doaj   +1 more source

Porous Organic Polymers-Supported Metallocene Catalysts for Ethylene/1-Hexene Copolymerization

, 2018
Porous organic polymers (POPs) have received much attention in adsorption, separation, and catalysis. In this paper, porous organic polymers with different pore structure were used as metallocene catalyst supports, and ethylene/1-hexene copolymerizations
Xiong Wang, Xiao-Yu Han, F. Ren, Ren-Wei Xu, Yong-Xiao Bai   +4 more
semanticscholar   +1 more source

Polyisoprene-based block copolymers as supports for metallocene and post-metallocene catalytic systems toward ethylene polymerization

, 2011
In this work, we report how micellar structures obtained by the self-assembly in heptane of polyisoprene-block-poly(methyl methacrylate) (PI-b-PMMA) and polyisoprene-block-poly(ethylene oxide) (PI-b-PEO) can be effectively used as organic supports for ...
HEURTEFEU, Bertrand, ORIOU, Jules, IBARBOURE, Emmanuel, Jules Oriou, CRAMAIL, Henri, Henri Cramail, CLOUTET, Eric, Bertrand Heurtefeu, Éric Cloutet, Emmanuel Ibarboure   +9 more
core   +1 more source

Metallocene Catalytic Insertion Polymerization of 1-Silene to Polycarbosilanes

, 2015
Metallocene of zirconium were used as a catalyst for an insertion polymerization of 1-methylsilene directly into pre-ceramic precursor polyzirconocenecarbosilane (PZCS) during dechlorination of dichlorodimethylesilane by sodium, which exhibits high ...
Tian, Yuelong, Zhang, Weigang, Yu, Shouquan, Lv, Xiaoxu, Ge, Min   +4 more
core   +1 more source

Ba₂NiSi₃:  A One-Dimensional Solid-State Metallocene Analog

, 2016
Ba2NiSi3:  A One-Dimensional Solid-State Metallocene ...
Jianggao Mao (2982033), Joanna Goodey (2727337), Arnold M. Guloy (1680850)   +2 more
core   +2 more sources

Synthesis of Linear Ethylene/Divinylbenzene Copolymers by Metallocene Catalysis

, 2016
Synthesis of Linear Ethylene/Divinylbenzene Copolymers by Metallocene ...
T. C. Chung (2665975), J. Y. Dong (2568403)   +1 more
core   +1 more source

Comonomer sequence distribution in metallocene-based ethylene/1-butene (S-34) and ethylene/1-hexene (S-43) copolymers

, 1999
Metallocene based polyethylenes were prepared by SMOPEC's "metallocene adduct" technology in a gas phase fluidized bed model reactor. The C-13-NMR spectra of ethylene/1-butene (S-34) and ethylene/1-hexene(S-43) copolymers were studied in a manner ...
Jing, ZH, Han, XW, Deng, Y, Bao, XH, Zhao, JK, Liu, XM, Chen, W   +6 more
core  

THE SYNTHESIS OF METALLOCENE CALIX[4]ARENES

, 1987
The condensation of 1,1′-bis(chlorocarbonyl)metallocenes and p-tert-butylcalix[4]arene in toluene leads to novel metallocene calix[4]arenes in which the metallocene subunit bridges the opposite hydroxy groups of the parent calixarene. © 1987 D.
BEER, P, KEEFE, A
core   +1 more source

POTASSIUM SELECTIVE METALLOCENE CRYPTAND MOLECULES

, 1986
Novel metallocene cryptand molecules have been synthesized exhibiting selective complexation of K+ to the exclusion of either Li+, Na+ or Cs+.
Andrew R. Whyman, Paul D. Beer, Christopher G. Crane, Anthony D. Keefe   +3 more
core   +1 more source