Crosslinked polymers of styrene with 1,3,5‐triisopropenylbenzene

Furlani, A.; Bicev, P.; Fiorentino, M.

doi:10.1002/pol.1974.170120307

Cited by 3 publications

(3 citation statements)

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“…Poly(cyanoacetylene) prepared with triethylamine as catalyst did show several distinct NMR signals (Figure ). These, however, were not assigned to polymer but rather to short oligomers and/or cyclo-trimerized or cyclo-tetramerized acetylenes. − ,, It was notable that the poly(cyanoacetylene) samples prepared with nickel or palladium catalysts generally did not show these NMR signatures, despite the fact that nickel complexes are precedented acetylene cyclo-trimerization and cyclo-tetramerization catalysts 7 NMR spectra of poly(cyanoacetylene) prepared with triethylamine catalyst.…”

Section: Resultsmentioning

confidence: 99%

“…These, however, were not assigned to polymer but rather to short oligomers and/or cyclotrimerized or cyclo-tetramerized acetylenes. [51][52][53][54]88,89 It was notable that the poly(cyanoacetylene) samples prepared with nickel or palladium catalysts generally did not show these NMR signatures, despite the fact that nickel complexes are precedented acetylene cyclotrimerization and cyclo-tetramerization catalysts. 51 Since solution NMR spectroscopy yielded little information, solid-state 13 C NMR spectra were collected of several poly(cyanoacetylene) samples (Figure 8).…”

Section: Electronic Absorption Spectroscopymentioning

confidence: 99%

“…Nickel salts are well-known to cyclotrimerize, cyclotetramerize, and to polymerize acetylene, producing benzene, cyclooctatetraene, and amorphous presumably low molecular weight poly(acetylene). − Recently, there have been several reports of the polymerization of acetylene derivatives using late-transition-metal catalysts based on rhodium, − palladium, and nickel. − Late-transition-metal catalysts are particularly attractive as they tend to exhibit greater functional group tolerance than the more electron-deficient early-transition-metal catalysts. To our knowledge, these catalysts have not been applied to the synthesis of poly(cyanoacetylene).…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Poly(cyanoacetylene) Using Late-Transition-Metal Catalysts

et al. 1999

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Poly(cyanoacetylene) has been prepared by polymerization of cyanoacetylene using a variety of late-transition-metal (Pd- and Ni-based) catalysts. The effect of reaction conditions on molecular weight and polymer yield was explored. Significant catalyst residues remain in the polymer samples. However, spectra are consistent with the proposed poly(cyanoacetylene) structure. Notable differences in molecular weight, effective conjugation length, and ability to undergo thermal cyclization to a supposed aromatic ladder polymer were observed between these polymers and those prepared using conventional anionic or radical initiators.

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Section: Resultsmentioning

confidence: 99%

Section: Electronic Absorption Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of Poly(cyanoacetylene) Using Late-Transition-Metal Catalysts

et al. 1999

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Porous bead polyaromatic copolymers containing ester groups. I. Some thermal properties

Matynia

Wójcik

1979

Angew. Makromol. Chem.

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Porous bead polyaromatic copolymers of styrene with 4,4'-di(methacryloyloxyme-thy1)diphenylmethane (DMD) and 4-(methacryloyloxymethyl)diphenylmethane (MD) with DMD were prepared. The thermal stabilities of these compounds were characterized by the rate of degradation, the initial decomposition temperature and the carbon residue. The activation energies of thermal decomposition were determined. DMD-styrene copolymers are stable up to 270 "C and DMD-MD-copolymers up to 240 "C. ZUSAMMENFASSUNG:Im PerlpolymerisationsprozeR wurden porose polyaromatische Copolymere von Styrol mit 4,4'-Bis(methacryloyloxymethyl)diphenylmethan (DMD) und 4-(Methacryloyloxy-methy1)diphenylmethan (MD) und DMD hergestellt. Die thermische Stabilitat dieser Verbindungen wurde durch die Degradationsgeschwindigkeit, die Anfangszerfalltemperatur und den Kohlenstoffrest charakterisiert. Die Aktivierungsenergien des thermischen Abbaus wurden ermittelt. DMD-Styrol-Copolymere sind bis zu 270 "C und DMD-MD-Copolymere bis zu 240 "C stabil.

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Porous bead aliphatic–aromatic methacrylate copolymers. VII. TG, DTA, DSC, and inverse gas chromatography studies

Wójcik

1990

J of Applied Polymer Sci

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SynopsisThe thermal behavior of porous bead methyl methacrylate-di(methacryloyloxymethy1)naphthalene (DMN) copolymers was investigated by TG, DTA, and DSC measurements as well as the inverse gas chromatography method using several different molecular probes. TG and DTA results proved copolymer stability up to 250°C. The retention diagrams for all probes used showed the temperature transitions among which one corresponds to glassy transition of amorphous PMMA. The other features observed on the retention diagrams correspond to a segmental mobility of weakly crosslinked copolymer parts.

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Crosslinked polymers of styrene with 1,3,5‐triisopropenylbenzene

Cited by 3 publications

References 2 publications

Preparation of Poly(cyanoacetylene) Using Late-Transition-Metal Catalysts

Preparation of Poly(cyanoacetylene) Using Late-Transition-Metal Catalysts

Porous bead polyaromatic copolymers containing ester groups. I. Some thermal properties

Porous bead aliphatic–aromatic methacrylate copolymers. VII. TG, DTA, DSC, and inverse gas chromatography studies

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