Results 91 to 100 of about 2,112 (213)

Supported Ionic Metallocene Polymerization Catalysts

, 2016
Supported Ionic Metallocene Polymerization ...
Gregory G. Hlatky (3058749), David J. Upton (3058746)   +1 more
core   +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
Xiaoyu Han, Renwei Xu, Xiong Wang, Feng Ren, Yongxiao Bai   +4 more
core   +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

Polymerization kinetics of bicyclic olefins and mechanism with symmetrical ansa-metallocene catalysts associated with active center count: relationship between their activities and structure and activation path. [PDF]

RSC Adv, 2022
Ali A, Ali A, Naveed A, Shehzad K, Aziz T, Rasheed T, Moradian JM, Hassan M, Hassan M, Rahman A, Zhiqiang F, Guo L.   +11 more
europepmc   +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  

Preparation of Pincer Hafnium Complexes for Olefin Polymerization

Molecules, 2019
Pincer-type [Cnaphthyl, Npyridine, Namido]HfMe2 complex is a flagship among the post-metallocene catalysts. In this work, various pincer-type Hf-complexes were prepared for olefin polymerization.
Su Jin Kwon, Jun Won Baek, Hyun Ju Lee, Tae Jin Kim, Ji Yeon Ryu, Junseong Lee, Eun Ji Shin, Ki Soo Lee, Bun Yeoul Lee   +8 more
doaj   +1 more source

Correction: Rapid kinetic evaluation of homogeneous single-site metallocene catalysts and cyclic diene: how do the catalytic activity, molecular weight, and diene incorporation rate of olefins affect each other? [PDF]

RSC Adv, 2021
Ali A, Nadeem M, Lu J, Moradian JM, Rasheed T, Aziz T, Maouche C, Guo Y, Awais M, Zhiqiang F, Guo L.   +10 more
europepmc   +1 more source

Correlação entre propriedades reológicas e ópticas de filmes tubulares de polietileno linear de baixa densidade com diferentes distribuições de ramificações curtas Correlation between rheological and optical properties of LLDPE blown films with different distributions of short chain branching

Polímeros, 2006
Devido a suas excelentes propriedades mecânicas o polietileno linear de baixa densidade, PELBD, tem ganhado cada vez mais importância na indústria de embalagens.
Glayton M. Basso, Pedro I. Paulin-Filho, Rosario E. S. Bretas, Alessandro Bernardi   +3 more
doaj   +1 more source

Hybrid zeolitic-mesostructured materials as supports of metallocene polymerization catalysts

, 2012
Línea 2. Procesos de polimerización de olefinas y caracterización de polímerosThe potential application of hybrid ZSM-5/Al-MCM-41 zeolitic-mesostructured materials as supports of metallocene polymerization catalysts has been investigated and compared ...
Grieken, Rafael van, Paredes, B., B. Paredes, Carrero, A., A. Carrero, R. van Grieken   +5 more
core   +1 more source

Rapid kinetic evaluation of homogeneous single-site metallocene catalysts and cyclic diene: how do the catalytic activity, molecular weight, and diene incorporation rate of olefins affect each other? [PDF]

RSC Adv, 2021
Ali A, Ali A, Nadeem M, Lu J, Moradian JM, Rasheed T, Aziz T, Maouche C, Guo Y, Awais M, Zhiqiang F, Quo L.   +11 more
europepmc   +1 more source