CATALYST FOR PROPYLENE POLYMERIZATION AND THE METHOD OF PROPYLENE POLYMERIZATION USING THE CATALYST
申请人:Samsung Total Petrochemicals Co. Ltd.
公开号:EP1805225A1
公开(公告)日:2007-07-11
PERFLUOROALKYLENE ETHER-CONTAINING COMPOUND AND SURFACE PROTECTIVE FILM
申请人:FUJI XEROX CO., LTD.
公开号:US20150274870A1
公开(公告)日:2015-10-01
Provided is a perfluoroalkylene ether-containing compound represented by the following general formula (1):
wherein R
1
and R
2
each independently indicates a fluorine atom or a trifluoromethyl group, provided that both R
1
and R
2
are not the fluorine atom, n1 indicates an integer from 1 to 5, n2 indicates an integer from 0 to 2, the total number of n1 and n2 is less than or equal to 5, m indicates an integer greater than or equal to 1, A
1
and A
2
each independently indicates a bivalent group represented by the following general formula (2), B
1
and B
2
each independently indicates a bivalent group selected from the group consisting of a single bond and the following (B-1) to (B-3), X
1
and X
2
each independently indicates a monovalent group having at least one reactive crosslinking group selected from the group consisting of the following (X-1) to (X-8).
[EN] CATALYST FOR PROPYLENE POLYMERIZATION AND THE METHOD OF PROPYLENE POLYMERIZATION USING THE CATALYST<br/>[FR] CATALYSEUR POUR POLYMERISATION DE PROPYLENE ET PROCEDE DE POLYMERISATION DE PROPYLENE FAISANT INTERVENIR CE CATALYSEUR
申请人:SAMSUNG TOTAL PETROCHEMICALS
公开号:WO2006062287A1
公开(公告)日:2006-06-15
[EN] The present invention provides a catalyst for propylene polymerization and a method for propylene polymerization using the same, specifically, a catalyst for propylene polymerization, which is prepared by reacting dialkoxy magnesium with titanium halide compound or silane halide compound and internal electron donor in the presence of an organic solvent, and a method for propylene polymerization which can produce polypropylene having 99% or more of iso- tacticity index, by mixing and reacting said catalyst, alkyl aluminum, external electron donor and propylene. [FR] L'invention concerne un catalyseur de polymérisation de propylène ainsi qu'un procédé de polymérisation de propylène faisant intervenir ce catalyseur, spécifiquement, un catalyseur de polymérisation de propylène obtenu par la réaction de magnésium dialcoxy avec un composé d'halogénure de titane ou un composé d'halogénure de silane et un donneur d'électron interne, en présence d'un solvant organique. Par ailleurs, l'invention concerne un procédé de polymérisation de propylène qui permet d'obtenir du polypropylène présentant un taux d'isotacticité d'au moins 99 %, par mélange et réaction dudit catalyseur, d'aluminium d'alkyle, de donneur d'électron externe et de propylène.
[EN] METHOD FOR PREPARING OLEFIN-BASED POLYMER BY GAS-PHASE POLYMERIZATION<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'UN POLYMÈRE À BASE D'OLÉFINES PAR POLYMÉRISATION EN PHASE GAZEUSE<br/>[KO] 기상 중합에 의한 올레핀계 중합체의 제조방법
申请人:HANWHA SOLUTIONS CORP
公开号:WO2021118145A1
公开(公告)日:2021-06-17
본 발명은 기상 중합에 의한 올레핀계 중합체의 제조방법에 관한 것이다. 구체적으로, 본 발명은 반-회분식(semi-batch) 교반형 반응기 내에서 올레핀계 단량체를 기상 중합하여 올레핀계 중합체를 제조하는 방법에 관한 것이다. 본 발명의 구체예에 따른 올레핀계 중합체의 제조방법은 올레핀계 단량체의 기상 중합 시에 높은 촉매 활성을 유지하면서도 국부적인 과반응에 의한 중합체 뭉침 현상을 방지하고 우수한 물성을 갖는 올레핀계 중합체를 제조할 수 있다.
Sulfonated graphene as highly efficient and reusable acid carbocatalyst for the synthesis of ester plasticizers
作者:Bhaskar Garg、Tanuja Bisht、Yong-Chien Ling
DOI:10.1039/c4ra11205a
日期:——
demonstrated by 31P magic-angle spinning (MAS) NMR spectroscopy. The superior catalytic performance of GSO3H over traditional homogeneous acids, Amberlyst™-15, and acidic ionic liquids has been attributed to the presence of highly acidic and stable sulfonic acid groups within the two dimensional graphene domain, which synergistically work for high mass transfer in the reaction. Furthermore, the preliminary
增塑剂在生产柔性塑料方面的功效众所周知。汽车,塑料和制药行业对健康的经济至关重要,它们严重依赖增塑剂来生产从建筑材料到医疗设备,化妆品,儿童玩具,食品包装,粘合剂,油漆和“神奇药物”的所有产品。尽管H 2 SO 4通常用作增塑剂合成的商品催化剂,但它能量效率低,不可回收,并且需要从均相反应混合物中进行繁琐的分离,从而导致大量不可回收的酸废料。在这项研究中,我们首次报道了使用磺化石墨烯(GSO 3)有效合成酯类增塑剂(产率> 90%)的方法。H)是一种节能,耐水,可重复使用和高活性的固体酸碳催化剂。如31 P魔角旋转(MAS)NMR光谱所证明的,用发烟的H 2 SO 4在120°C的条件下对还原的氧化石墨烯进行水热磺化3天,得到的GSO 3 H具有显着的酸活性。与传统的均相酸,Amberlyst™-15和酸性离子液体相比,GSO 3 H的优异催化性能归因于二维石墨烯域内存在高酸性和稳定的磺酸