Studies of the Ring-opening Polymerization of Cyclic Ethers and Esters by Coordinate Catalysis PDF Download
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Author: Diana Navarro-Llobet
Publisher:
ISBN:
Category :
Languages : en
Pages : 376
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Book Description
Author: Diana Navarro-Llobet
Publisher:
ISBN:
Category :
Languages : en
Pages : 376
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Book Description
Author: Stanislaw Penczek
Publisher: Springer
ISBN: 9783662152584
Category : Technology & Engineering
Languages : en
Pages : 317
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Author: Kenneth John Ivin
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 544
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Author: S. Penczek
Publisher: Elsevier
ISBN: 1483147770
Category : Science
Languages : en
Pages : 133
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Book Description
Polymerization of Heterocycles (Ring Opening) is a collection of papers presented at the International Symposium on Polymerization of Heterocycles (Ring-Opening) held in Warsaw, Poland on June 23-25, 1975. The first paper describes the developments and physical meaning of ion pairs and higher ionic aggregates. Another paper explains the process of obtaining linear polymers, containing rings in the main chain. The book interprets the various behaviors of polymers that can result in high optical yields of stereoelectivity ratios equal to 8. The text then discusses future trends in aldehyde and carbonyl polymerization, including some problem areas pertaining to failures to homopolymerize or copolymerize tetrachloroethylene oxide. Another paper reviews the elemental reactions of selected combinations of copolymerization; the next paper discuses aspects of the mechanism of nucleophilic opening of epoxide rings through studies of certain kinetics. The book then analyzes the ability of lactams to undergo ring-opening polymerization, which mainly depends on the ring size and on the substitution and presence of heteroatoms in the lactam ring itself. The text also discusses the preparation, properties, and applications of the heterochain polymers in medicine or biologically active materials. The book can provide useful information for biochemists, researchers dealing with inorganic and organic compounds, and scientists working in the fields of chemistry such as synthetic chemistry, as well as polymer engineering.
Author: Tomohiro Kawai
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 4
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Book Description
Author: N. Spassky
Publisher: iSmithers Rapra Publishing
ISBN: 9781859570579
Category : Technology & Engineering
Languages : en
Pages : 112
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Book Description
The general features of ring-opening polymerisation, for example the dependence of polymerisability upon ring-strain, the significance of ring-chain equilibria, and the potential for formation of cyclic oligomers are outlined. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.
Author: Ezat Khosravi
Publisher: Springer Science & Business Media
ISBN: 9401003734
Category : Science
Languages : en
Pages : 489
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Book Description
Since the last ASI in Turkey in Sept. 1995, the olefin metathesis has made remarkable strong developments with an incredible speed in various directions. New catalyst systems have been developed which have resulted in the synthesis of novel materials. Other fascinating developments have been the new catalysts for stereoselective metathesis and catalysts with considerable functional group tolerance. These new catalysts in addition to Ring Opening Metathesis Polymerisation (ROMP) and Acyclic Diene Metathesis (ADMET) are now powerful tools for Ring Closing Metathesis (RCM) and have found many applications in the synthesis of natural products. A lot of information has been established about all aspects of the olefin metathesis and there is a vast literature concerning the process, covering the initiators, mechanistic features and applications of this reaction in organic and polymer synthesis. The NATO ASI on rd th ROMP and Related Chemistry took place in Polanica-Zdroj, Poland during 3 to 15 Sept. 2000, to highlight the developments in this area and to discuss the prospects and visions for the year 2000 and beyond. The aims of the ASI were: to provide a platform for dissemination of knowledge; to promote communication between people who have a serious interest in this field of chemistry; to help establishing international scientific contacts and to provide an opportunity for the scientists with an appropriate scientific background to learn of recent developments in this field of science. There were 15 lecturers and 67 participants in this NATO ASI.
Author: George Edloe Ham
Publisher:
ISBN:
Category : Polymerization
Languages : en
Pages : 604
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Author: Davinder Paul Singh Riat
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Lon Mathias
Publisher: Springer Science & Business Media
ISBN: 1461593492
Category : Technology & Engineering
Languages : en
Pages : 421
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Book Description
Phase transfer catalysis or interfacial catalysis is a syn thetic technique involving transport of an organic or inorganic salt from a solid or aqueous phase into an organic liquid where reaction with an organic-soluble substrate takes place. Over the past 15 years there has been an enormous amount of effort invested in the development of this technique in organic synthe sis. Several books and numerous review articles have appeared summarizing applications in which low molecular weight catalysts are employed. These generally include either crown ethers or onium salts of various kinds. While the term phase transfer catalysis is relatively new, the concept of using a phasetrans fer agent (PTA) is much older~ Both Schnell and Morgan employed such catalysts in synthesis of polymeric species in the early 1950's. Present developments are really extensions of these early applications. It has only been within the last several years that the use of phase transfer processes have been employed in polymer synthesis and modification. Similarly, the use of polymer-bound phase transfer agents is also a recent development. These and related areas have nonetheless enjoyed explosive growth as mea sured by the number of publications and the variety of applica tions which have appeared. Several reviews dealing with these l 6 polymer-related investigations have been published.
