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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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Photoinitiated Cationic Polymerization
1989Photoinitiated cationic polymerization has not as yet achieved the commercial significance of radical polymerization in important photopolymerization processes, including UV curing and photoimaging. Several reasons for this may be advanced, including: (1) the development of photoinitiators for cationic polymerization was preceded by substantial ...
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Living Cationic Olefin Polymerization
1987Recently we have discovered that various tertiary ester and ether boron trichloride complexes induce truly living polymerization of isobutylene, 1,3,5-trimethylstyrene and copolymerization of isobutylene/ isoprene in CH3C1 and CH2C12 diluents over a wide range of temperatures (i.e., from 0° to -70°C).
J. P. Kennedy +3 more
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Cationic Ring-Opening Polymerization
1992Ring-opening polymerization of (hetero)cyclic monomers by a cationic mechanism provides the possibility to produce a very large number of polymers with a broad spectrum of physicochemical properties. As shown in Table 3.1, cationic ring-opening polymerization (CROP) can be applied to most types of heterocycles on condition that the monomers contain ...
Eric J. Goethals, Ronny R. De Clercq
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Cationic polymerization of aldehydes
Die Makromolekulare Chemie, 1974AbstractCationic polymerizations of formaldehyde, higher aliphatic aldehydes and haloaldehydes are discussed. The polymerization is initiated by Lewis and Brønsted acids but is dominated by the fact that in almost all cases the polymers precipitate and crystallize from the solution.
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Regulating cationic polymerization: From structural control to life cycle management
Progress in Polymer Science, 2023Jia Niu, Lianqian Wu
exaly