Results 211 to 220 of about 25,468 (243)
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Redox Intitiated Cationic Polymerization
Macromolecular Symposia, 2009AbstractTwo novel redox initiator systems have been developed for carrying out the cationic polymerizations of vinyl and heterocyclic monomers. The initiators are based on various onium salts as the oxidant together with an alkylborane or an organosilane as the reducing agent.
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CATIONIC POLYMERIC SURFACTANTS
Journal of Dispersion Science and Technology, 1981(1981). CATIONIC POLYMERIC SURFACTANTS. Journal of Dispersion Science and Technology: Vol. 2, No. 2-3, pp. 281-313.
R. A. Wessling, D. M. Pickelman
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Electro‐Controlled Living Cationic Polymerization
Angewandte Chemie, 2018AbstractCationic polymerizations have long been industrialized; however, stimulus‐regulated cationic polymerization remains to be developed. An electrochemically controlled living cationic polymerization is presented for the first time. In the presence of external potential and organic‐based electrocatalyst, a series of monomers can be polymerized ...
Wei Sang, Qiang Yan
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Thermodynamics of cationic polymerization. 1. Cationic propagation
Acta Polymerica, 1988AbstractLatterly, the formation enthalpies were determined for many carbocations by means of thermochemical methods. Therefore a thermodynamical view is possible for the propagation reactions of the cationic polymerization to a larger extent.
P. Hallpap +4 more
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Cationic polymerization of chloral
Polymer Science U.S.S.R., 1975Abstract It was found possible to polymerize chloral using cationic catalysts. In contrast to anionic polymerization, chloral is polymerized at a much lower rate with cationic catalysts and the polymer formed has a variable morphology.
P. Kubisa, O. Vogl'
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Cationic graft polymerization lithography
SPIE Proceedings, 2003Cationic graft polymerization lithography is a variation of top surface imaging schemes. This technique uses a spin-coated, inert polymer film as a photoacid generator carrier. UV exposure is used to generate acid in the top surface of the film. A vapor-phase reaction between the generated acid and a silicon-containing monomer occurs in the exposed ...
Heather F. Johnson +5 more
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Photoinitiated Cationic Polymerization
1999This paper describes the latest developments in the photoinitiating systems, based on onium salts, for cationic polymerization. The goal is, furthermore, to show differences as well as parallels between systems for different modes of photoinitiation.
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Photoactivated Cationic Frontal Polymerization
Macromolecular Symposia, 2005AbstractPhotoactivated cationic ring‐opening polymerizations of certain oxirane and oxetane monomers take place in a frontal manner. The study of the frontal behavior of those monomers was conducted using a new analytical technique involving optical pyrometry that provides insight into the mechanism of these polymerizations.
Benjamin Falk +2 more
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Cationic polymerization of formaldehyde
Die Makromolekulare Chemie, 1968AbstractCationic polymerization of monomeric formaldehyde has been studied at low temperature. It was found that high molecular weight polyoxymethylene with the reduced viscosity higher than 1.0 dl/g was readily obtained when the polymerization of formaldehyde was carried out in saturated hydrocarbons in the presence of LEWIS acids, BRÖNSTED acids, I2,
Tadashi Yamaguchi +2 more
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Cationic polymerization of norbornadiene
Journal of Polymer Science Part A: Polymer Chemistry, 2003AbstractThe polymerization of norbornadiene (NBD) initiated by the 2‐chloro‐2,4,4‐trimethylpentane/titanium tetrachloride system was investigated. Efforts were made to develop conditions for the living polymerization of NBD by the use of proton trap and electron donor in the −35 to −60 °C range however this objective was only partially attained.
Ralf M. Peetz +2 more
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