Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Timothy D. Shaffer"'
Autor:
Biswanath Dutta, Ryan Clarke, Sumathy Raman, Timothy D. Shaffer, Laura Achola, Partha Nandi, Steven L. Suib
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Acrylics and acrylates have become important building blocks for the chemical industry, but their efficient synthesis remains a challenge. Here, the authors report the first example of the catalytic aerobic partial oxidation of allyl ether to its acr
Externí odkaz:
https://doaj.org/article/6baa28ca418f4aee817a31ecb5d1bb4f
Publikováno v:
Nature Chemistry.
Autor:
Aran K. Hubbell, Jessica R. Lamb, Samantha N. MacMillan, Kristine Klimovica, Geoffrey W. Coates, Timothy D. Shaffer, Michael Mulzer
Publikováno v:
ACS Catalysis. 10:12537-12543
Poly(pivalolactone) (PPVL) is a crystalline polyester with attractive physical and mechanical properties; however, prohibitively expensive syntheses of pivalolactone have thwarted efforts to produc...
Autor:
Takahisa Sato, Klaus Marten, Helmut Greim, Noboru Shimizu, Takashi Ohara, Otto Dr Weiberg, Timothy D. Shaffer, Günter Dr. Prescher, Partha Nandi, Helmut Schwind
Publikováno v:
Ullmann's Encyclopedia of Industrial Chemistry
The article contains sections titled: 1. Acrylic Acid and Esters 1.1. Physical Properties 1.2. Chemical Properties 1.3. Production 1.3.1. Propene Oxidation 1.3.2. Esterification 1.4. Quality Specifications and Analysis 1.5. Storage and Transportation
Autor:
Steven L. Suib, Sumathy Raman, Timothy D. Shaffer, Partha Nandi, Laura A. Achola, Biswanath Dutta, Ryan Clarke
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Nature Communications
Nature Communications
Herein we report the first example of the catalytic aerobic partial oxidation of allyl ether to its acrylate ester derivative. Many partial oxidations often need an expensive oxidant such as peroxides or other species to drive such reactions. In addi
Publikováno v:
Kirk-Othmer Encyclopedia of Chemical Technology
Isobutylene copolymers, such as butyl, halobutyl, and brominated poly(isobutylene-co-p-methylstyrene), have chemical and physical characteristics that make them highly useful in a wide variety of applications. The low degree of permeability to gases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98adeadf4dc052481ff18d6cc91d5b50
https://doi.org/10.1002/0471238961.0221202511180519.a01.pub3
https://doi.org/10.1002/0471238961.0221202511180519.a01.pub3
Publikováno v:
Macromolecules. 33:9548-9552
The first examples of dimethylaluminum chloride catalyzed living isobutylene polymerizations are presented. The polymerizations are carried out with conventional tertiary alkyl chloride initiators and 60/40 v/v nonpolar/polar solvent mixtures, the mo
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 38:1680-1686
Poly(isobutylene-co-p-methylstyrene) is an important precursor to Exxpro™ elastomers. A previous report detailed the characterization of both the proton and the carbon NMR spectra of the copolymer.1 However, several resonances in the proton NMR spe
Autor:
Timothy D. Shaffer, John R. Ashbaugh
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 35:329-344
The initiation and catalysis of isobutylene polymerization from several new metallocene and nonmetallocene initiator-catalysts that contain the noncoordinating anions (NCA), B(C6F5)4− and RB(C6F6)3−, is reported. Application of these initiator-ca
Autor:
Timothy D. Shaffer, Michael C. Kramer
Publikováno v:
Die Makromolekulare Chemie. 191:3157-3161
Relative concentrations of catalysts, sulfide catalyst structure, and organic phase monomer concentration were studied for the bimechanistic phase transfer catalyzed (BPTC) polymerization of aqueous sodium sulfide with 1,8-dibromooctane (DBO). BPTC i