Linear Addition Polymers and Cyclic Oligomers ofN,N-Diglycidyl Aniline and Amines. Uncrosslinked Epoxide-Amine Addition Polymers, 46

Klee, Joachim E.; Flammersheim, H.‐J.

doi:10.1002/1521-3935(20020101)203:1<100::aid-macp100>3.0.co;2-j

Cited by 9 publications

(10 citation statements)

References 20 publications

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“…In this chapter, mass spectrometric investigation of polyadducts such as epoxide-amine addition polymers, [81][82][83][84] polyurethanes, 85-101 polyureas 102,103 and Michael analogue polyadducts 104,105 are summarised.…”

Section: Polyadductsmentioning

confidence: 99%

“…The addition polymerisation of N,N-diglycidyl aniline (DGA) and disecondary diamines leads to linear addition polymers with molecular weights ranging from 2500 to 9100 Da, respectively. Their relatively broad molecular weight distribution (M w / M n = 5.5 to 17) is caused by the formation of small amounts of cyclic oligomers as shown by GPC analysis and MALDI-ToF MS. 83 Surprisingly, the addition polymerisation of primary monoamines such as aniline, benzyl amine or 1-aminoadamantane and DGA results in the formation of oligomers only. These oligomers have molecular weights ranging from 684 to 1165 g mol -1 only.…”

Section: Polyadductsmentioning

confidence: 99%

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Mass Spectrometry of Step-Growth Polymers

Klee¹

2005

Eur J Mass Spectrom (Chichester)

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For at least two decades different mass spectrometric techniques have been applied for polymer analysis, including the qualitative determination of chemical compositions, end group identification, functionality type distribution and the determination of the cyclisation extend at each degree of polymerisation. Molecular weights exceeding 100 KDa are provable by MALDI-ToF mass spectrometry. Further, molecular weight distributions are determined by MADLI-ToF. However, there are some hints that, there is a discrimination against higher molecular weight species in samples with polydispersity of more than 1.2. Furthermore, pathways for dendritic and hyper-branched polymers, supramolecular polymers and nano condensates are analysed by help of mass spectrometry.

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Section: Polyadductsmentioning

confidence: 99%

Section: Polyadductsmentioning

confidence: 99%

Mass Spectrometry of Step-Growth Polymers

Klee¹

2005

Eur J Mass Spectrom (Chichester)

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“…It has been reported that a small amount of cyclic oligomers is to be found in linear epoxide -amine addition polymers which can be removed by precipitation in acetone. 12 Scheme II shows the synthetic route for the preparation of the cyclic epoxide -amine addition polymer. The DGEBA-AP addition polymer was prepared by reacting equimolar amounts of DGEBA and AP in chlorobenzene.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of cyclic diepoxide — HALS addition polymers and their photostabilizing effects on styrenic polymers

Chae

Kim

2010

Macromol. Res.

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A new cyclic, hindered amine light stabilizer (HALS) was prepared by the addition polymerization of a diepoxide and 4-amino-2,2,6,6-tetramethylpiperidine, and its photostabilizing effects on styrenic polymers were examined. The chemical structure of cyclic HALS was characterized by MALDI-TOF mass spectrometry. The prepared cyclic HALS had a moderate molecular weight (M w = 900~1,100) and high thermal stability (T d ≈ 300 o C) that were compatible with styrenic polymers, such as polystyrene and styrene-butadiene rubber. The photostabilization effect of cyclic HALS was similar to or better than that of Tinuvin 770, a commercially available polymeric HALS. A synergistic effect between cyclic HALS and a UV absorber on the inhibition of photooxidation was observed.

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“…Because of the relatively large ring size, the cycles do not bond one of the alkali metal selectively. To achieve selective bonding of cycles with different alkali metals, smaller 8‐ or 16‐membered cycles should be investigated that are obtained by the reaction of N , N ‐diglycicidyl aniline and primary monoamines 1…”

Section: Discussionmentioning

confidence: 99%

Metal‐template synthesis of cyclic epoxide–amine oligomers: Uncrosslinked epoxide–amine addition polymers, 47

Klee¹,

Hägele²,

Przybylski³

2003

J. Polym. Sci. A Polym. Chem.

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The addition reaction of 2,2-bis-[4-(2,3-epoxypropoxy)-phenyl]-propane (DGEBA) and preformed complexes of metal ions and disecondary diamines led to a large quantity of cyclic epoxide-amine oligomers. As shown by gel permeation chromatographic analysis, cycles of n ϭ 1, 2, and 3 were formed. Functional epoxide end groups of the prepared oligomers were completely missing in the IR and 1 H NMR and 13 C NMR spectra. In the fast atom bombardment and matrix-assisted laser desorption/ ionization mass spectra, the molecular ions of the n ϭ 1, 2, 3 cycles of DGEBA and N,NЈ-dibenzyl-5-oxanonanediamine-1,9 were detected at m/z ϭ 680, 1361, and 2042.

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Linear Addition Polymers and Cyclic Oligomers ofN,N-Diglycidyl Aniline and Amines. Uncrosslinked Epoxide-Amine Addition Polymers, 46

Cited by 9 publications

References 20 publications

Mass Spectrometry of Step-Growth Polymers

Mass Spectrometry of Step-Growth Polymers

Synthesis of cyclic diepoxide — HALS addition polymers and their photostabilizing effects on styrenic polymers

Metal‐template synthesis of cyclic epoxide–amine oligomers: Uncrosslinked epoxide–amine addition polymers, 47

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