Addition polymers of aldehydes

Vogl, Otto

doi:10.1002/1099-0518(20000701)38:13<2293::aid-pola10>3.0.co;2-m

Cited by 50 publications

(37 citation statements)

References 47 publications

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“…1(B)]. In contrast, the amount of copolymers increased with FeCl 3 and GaCl 3 . GaCl 3 showed the highest catalytic activity among the three metal halides for copolymerization, reaching 70% monomer conversion in 1 h [ Fig.…”

Section: Copolymerization Of Bza With Ibve Using Various Lewis Acidsmentioning

confidence: 90%

“…Such well-controlled reaction has not been achieved using other initiators (cationogens) including an adduct of IBVE with acetic acid and a trimethylsilyl iodide, even when combined with GaCl 3 . The better control with EtSO 3 H/GaCl 3 is likely attributed to rapid addition of EtSO 3 H with IBVE 42 and subsequent efficient ionization of the resulting adduct by GaCl 3 . 43 The efficient initiation from vinyl ether cations is most likely to promote copolymerization, as discussed earlier.…”

Section: Controlled Copolymerization Using Ethanesulfonic Acid As An mentioning

confidence: 99%

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Controlled cationic copolymerization of benzaldehyde with isobutyl vinyl ether using base‐assisting system

Ishido

Aburaki

Kanaoka

et al. 2010

J. Polym. Sci. A Polym. Chem.

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Well‐controlled cationic copolymerization of benzaldehyde with IBVE was achieved using ethanesulfonic acid as an initiator in conjunction with GaCl3 in the presence of an added base. Copolymerization proceeded smoothly in toluene at −78 °C, yielding copolymers with very low polydispersity (Mw/Mn ∼ 1.1). Reactive conditions are critical for successful copolymerization: Every single parameter and ingredient is indispensable. For example, only homopolymerization of IBVE occurred in CH2Cl2 or in the absence of an added base.

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Section: Copolymerization Of Bza With Ibve Using Various Lewis Acidsmentioning

confidence: 90%

Section: Controlled Copolymerization Using Ethanesulfonic Acid As An mentioning

confidence: 99%

Controlled cationic copolymerization of benzaldehyde with isobutyl vinyl ether using base‐assisting system

Ishido

Aburaki

Kanaoka

et al. 2010

J. Polym. Sci. A Polym. Chem.

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“…The isoselective polymerization of acetaldehyde has been achieved using initiators such as zinc and aluminum alkyls, Grignard reagents, and lithium alkoxides [Kubisa et al, 1980;Pasquon et al, 1989;Pregaglia and Binaghi, 1967;Tani, 1973;Vogl, 2000]. The isoselectivity is high in some systems with isotactic indices of 80-90%.…”

Section: -13 Aldehydesmentioning

confidence: 99%

“…The product is optically inactive since there is an equal probability of propagating via right-and left-handed helices. Polymerization of the bulky monomer chloral yields an optically active product when one uses a chiral initiator, e.g., lithium salts of methyl (þ)-or (À)-mandelate or (R)-or (S)octanoate [Corley et al, 1988;Jaycox and Vogl, 1990;Qin et al, 1995;Vogl, 2000]. The chiral initiator forces propagation to proceed to form an excess of one of the two enantiomeric helices.…”

Section: -14b Chiral Conformationmentioning

confidence: 99%

Stereochemistry of Polymerization

Odian

2004

Principles of Polymerization

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Constitutional (formerly: structural) isomerism is encountered when polymers have the same overall chemical composition (i.e., same molecular formula) but differ in connectivitythe order in which the atoms are connected to each other. Polyacetaldehyde, poly(ethylene oxide), and poly(vinyl alcohol) are constitutional isomers. The first two polymers are CH CH 3 O C H 2 CH OH CH 2 CH 2 O n n Polyacetaldehyde Poly(ethylene oxide) Poly(vinyl alcohol) n obtained from isomeric monomers, acetaldehyde and ethylene oxide. The third is obtained by hydrolysis of poly(vinyl acetate) since vinyl alcohol does not exist (it is the enol form of acetaldehyde). Poly(methyl methacrylate) and poly(ethyl acrylate) are isomeric polymers CH 2 C CH 3 CO 2 CH 3 CH 2 CH CO 2 C 2 H 5 n n Poly (methyl methacrylate) Poly (ethyl acrylate) formed from isomeric monomers. Poly(E-caprolactam) and poly(hexamethylene adipamide) are isomeric even though the monomers are not isomeric. Similarly, the 1 : 1 copolymer of Principles of Polymerization, Fourth Edition.

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“…These latter techniques also have produced many beautiful objects. 42 During this period I became interested also in the art and theater of Japan (Kabuki and Noh). Since I have lived mostly in Kyoto, the old capital and the cultural center of Japan, I have been exposed to many scrolls and screens, in temples and other places, and have become fascinated with the block prints of 19th century Japan (Hokusai, Hiroshige, and Shiganobu) and, most important, with Japanese lacquerware and the interiors and the inner sancta of temples.…”

Section: Oriental Lacquerwarementioning

confidence: 99%