Results 21 to 30 of about 5,339 (237)
Hecheng xiangjiao gongye, 2023 The structure and properties of high modulus natural rubber (NR) / cis-1,4-polybutadiene rubber (BR) blends reinforced with carbon black and modified with trans-1,4-poly(butadiene-co-isoprene) rubber (TBIR) and low Mooney viscosity trans-1,4-poly ...
WANG Hao1,2,3, LI Lan-ge2,3, WANG Ri-guo2,3, LUAN Bo1,2
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The Polymerization of Internal Olefins
Kobunshi Kagaku, 1966 多くのβ-置換スチレンと無水マレイン酸 (MAn) とは比較的容易に組成1: 1の共重合体を生成する。また, 両モノマーの間に電荷移動型錯合体の生成が認められた。この共重合反応における錯合体の役割を明らかにするために1, 2-ジヒドロナフタリン (ジアリン) とMAnの共重合系を分光学的, および動力学的に研究した。ジアリンとMAnとの間には組成1: 1の電荷移動型錯合体が生成し, その平衡定数はクロロホルム中, 室温でK=0.052±0.004である。この系は熱重合も行なう。ジアリン (M2)-MAn (M1) の熱, および開始剤 (AIBN) による共重合をベンゼン (ポリマーが沈殿する不均一系) およびアセトン (均一系) 中で行ない, 次の結果を得た。AIBN共重合 ...
Shunsuke Murahashi +3 more
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Aqueous Catalytic Polymerization of Olefins [PDF]
Angewandte Chemie International Edition, 2002 Catalytic conversions in aqueous environments by transition metal complexes have become a well-established field over the past two decades. However, the vast majority of investigations have focussed on small-molecule synthesis. This may appear somewhat surprising as water is a particularly attractive reaction medium, especially for polymerization ...
Mecking, Stefan +2 more
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Hecheng xiangjiao gongye, 2021 The ruthenium-based catalyst [1,3-bis(trimethylphenyl)-2-imidazolinylidene]·dichloro·(o-methoxybenzylidene) ruthenium was synthesized and used to prepare the latex of hydrogenated nitrile-butadiene rubber(HNBR).
WANG Chuan-qi1, XUE Hao1,2, LIU Zhen-xue1,2, WANG Hui1, CAI Ying-hui1,2
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The charge percolation mechanism and simulation of Ziegler–Natta polymerizations. Part VI. Mechanism of ethylene polymerization by supported chromium oxide [PDF]
Journal of the Serbian Chemical Society, 2007 Despite intensive research over the last 50 years, many questions concerning ethylene polymerization by supported chromium oxide are still unanswered. Hence, the very fundamental issues of this polymerization are discussed in this paper. It is shown that
DRAGOSLAV STOILJKOVIC +4 more
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Polymerization of organized monomers [PDF]
Hemijska Industrija, 2004 The current explanations of olefin and vinyl monomer polymerization propose that monomer molecules are successively added one by one to the growing polymer chain.
Stoiljković Dragoslav M. +6 more
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Engineering, 2023 Olefin solution polymerization can be used to obtain high-performance polyolefin materials that cannot be obtained via other polymerization processes. Polyolefin elastomers (POE) are a typical example.
Changjiang Wu +7 more
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Monomer effect on the chain transfer by diethyl zinc in olefin polymerization by metallocene catalysts [PDF]
Polyolefins Journal, 2021 The present paper systematically studies the homo- and copolymerization of ethylene or propylene using metallocene as catalyst and diethyl zinc as chain transfer agent to obtain the polyolefin waxes with narrow molecular weight distribution and with a ...
Wei Wang, Taoyi Zhang, Liping Hou
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Continuous Additive Manufacturing using Olefin Metathesis
Advanced Science, 2022 The development of chemistry is reported to implement selective dual‐wavelength olefin metathesis polymerization for continuous additive manufacturing (AM).
Jeffrey C. Foster +6 more
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Macromol, 2021 Nickel-based ethylene polymerization catalysts have unique features, being able to produce macromolecules with a variable content of branches, resulting in polymers ranging from semicrystalline plastics to elastomers to hyperbranched amorphous waxes and ...
Ilaria D’Auria +2 more
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