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122 Newest Publications about the topic isobutylene


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Cationic Copolymerization and Multicomponent Polymerization of Isobutylene with C4 Olefins

16-Oct-2017 | Tota Rajasekhar; Ujjal Haldar; Priyadarsi De; Jack Emert; Rudolf Faust, Macromolecules, 2017

Cationic polymerization of isobutylene (IB) in the presence of other C4 olefins, 1-butene (B1), cis-2-butene (C2B), and 1,3-butadiene (BD) using the ethylaluminum dichloride (EADC)·bis(2-chloroethyl) ether (CEE) complex in conjunction with tert-butyl chloride (t-BuCl) as initiator in hexanes at 0 ...


Flash Pyrolysis of t-Butyl Hydroperoxide and Di-t-butyl Peroxide: Evidence of Roaming in the Decomposition of Organic Hydroperoxides

10-Oct-2017 | Paul J. Jones; Blake Riser; Jingsong Zhang, Journal of Physical Chemistry A, 2017

Thermal decomposition of t-butyl hydroperoxide and di-t-butyl peroxide was investigated using flash pyrolysis (in a short reaction time ...


Synthesis and characterization of polymer linked copper(I) bis(N‐heterocyclic carbene) mechanocatalysts

29-Sep-2017 | Philipp Michael, Shima Khazraee Sheidaee Mehr, Wolfgang H. Binder, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT In this paper, the synthesis and characterization of a series of latent polymeric bis(N‐heterocyclic carbene) (NHC) copper(I) complexes is reported, which can be activated for the copper(I)‐catalyzed azide/alkyne cycloaddition (CuAAC) via ultrasound. To prove the influence of chain ...


Low cost bifunctional initiators for bidirectional living cationic polymerization of olefins. I. isobutylene

04-Sep-2017 | Turgut Nugay, Balazs L. Keszler, Tejal Deodhar, Nihan Nugay, Joseph P. Kennedy, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT We describe the discovery of novel low cost bifunctional initiators 2,4,7,9‐tetramethyl‐tricyclo[]deca‐1(8),2,6‐triene‐4,9‐diol (bBCB‐diOH) and 4,9‐dichloro,2,4,7,9‐tetramethyl‐tricyclo[]deca‐1(8),2,6‐triene (bBCB‐diCl), for living cationic bidirectional ...


Catalytic chain transfer polymerization of isobutylene: The role of nucleophilic impurities

18-Aug-2017 | Tota Rajasekhar, Ujjal Haldar, Jack Emert, Philip Dimitrov, Rich Severt, Rudolf Faust, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT Fast polymerization of isobutylene (IB) initiated by tert‐butyl chloride using ethylaluminum dichloride·bis(2‐chloroethyl) ether complex (T. Rajasekhar, J. Emert, R. Faust, Polym. Chem. 2017, 8, 2852) was drastically slowed down in the presence of impurities, such as propionic acid, ...


Aggregation‐Induced Emission (AIE) Fluorophore Exhibits a Highly Ratiometric Fluorescent Response to Zn2+ in vitro and in Human Liver Cancer Cells

14-Jun-2017 | Weitao Gong, Hassan Mehdi, Huimin Guo, Michael Watkinson, Hua Ma, Ali Wajahat, Guiling Ning, Chemistry - A European Journal, 2017

Two novel organic fluorophores 8AQ and 8WB have been designed and synthesized. Fluorophore 8AQ, containing an isobutylene unit, exhibits a significant AIE feature and a remarkable highly selective ratiometric fluorescence response towards Zn2+ in solution as well as in human liver cancer cells. ...


Addition and abstraction kinetics of H atom with propylene and isobutylene between 200 and 2500K: A DFT study

21-May-2017 | Author(s): A. Parandaman, B. Rajakumar, Chemical Physics, 2017

Publication date: 10 July 2017 Source:Chemical Physics, Volume 491 Author(s): A. Parandaman, B. Rajakumar The rate coefficients for the reactions of hydrogen (H) atom with propylene and isobutylene were studied at M06-2X/6-31+G(d,p) and MPWB1K/6-31+G(d,p) level of theories between 200 ...


Quantitative preparation of allyl telechelic polyisobutylene under reflux conditions

17-Mar-2017 | Tejal J. Deodhar, Balazs L. Keszler, Joseph P. Kennedy, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT Allyl telechelic polyisobutylene (allyl‐PIB‐allyl) is of great commercial and scientific interest produced by living polymerization of isobutylene followed by functionalization (allylation with allyltrimethylsilane) under external cooling, typically to −78 °C. Cooling is cumbersome ...


Functional polyisobutylenes via electrophilic cleavage/alkylation

17-Mar-2017 | C. Garrett Campbell, Robson F. Storey, Journal of Polymer Science Part A: Polymer Chemistry, 2017

ABSTRACT Lewis‐acid catalyzed degradation of poly(isobutylene‐co‐isoprene) (butyl rubber) in the presence of an alkoxybenzene compound was studied as a new route toward low molecular weight multifunctional polyisobutylenes. Simultaneous cleavage and functionalization of butyl rubber was ...


Search for New Linear Musks Devoid of a 2,2-Dimethyl-1,4-dioxa­butane Unit: Synthesis and Olfactory Properties of 5-Substituted (3E)-Hex-3-enoates on the Way to Carba-Helvetolide and Carba-Serenolide

14-Mar-2017 | Kim Nguyen; Pascal Sutter; Philip Kraft, Synthesis, 2017

SynthesisDOI: 10.1055/s-0036-1588740 Since the nucleophilic opening of isobutylene oxide competes with the formation of polyethers, the 2,2-dimethyl-1,4-dioxabutane moiety constitutes the most important cost driver in the synthesis of linear musks. Therefore, musk motifs devoid of this ...


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