Synthesis of High Refractive Linear to Branched Polyguanamines from 2-Amino-4,6-dichloro-1,3,5-triazine with Aromatic Diamines

Polycondensation of 2-amino-4,6-dichloro-1,3,5-triazine (ADCT) with various aromatic diamines such as m-phenylenediamine (mPDA), 2,4,6-trimethyl-m-phenylenediamine (TMPDA), 4,4’-oxydianiline (ODA), 9,9-bis(4-aminophenyl)fluorene (BAFL), 4,4’-hexafluoroisopropylidenedianiline (BisAF) was investigated...

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Bibliographic Details
Published in:Journal of photopolymer science and technology 2023-09, Vol.36 (5)
Main Authors: Shibasaki, Yuji, Koizumi, Takanori, Oishi, Yoshiyuki
Format: Article
Language:eng ; jpn
Subjects:
Diamines
Glass transition temperature
Phenylenediamine
Refractivity
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Summary:Polycondensation of 2-amino-4,6-dichloro-1,3,5-triazine (ADCT) with various aromatic diamines such as m-phenylenediamine (mPDA), 2,4,6-trimethyl-m-phenylenediamine (TMPDA), 4,4’-oxydianiline (ODA), 9,9-bis(4-aminophenyl)fluorene (BAFL), 4,4’-hexafluoroisopropylidenedianiline (BisAF) was investigated. High-molecular weight perfectly linear polyguanamines (PG)s, (Mn ～ 46,000) were successfully obtained for the polycondensation of ADCT with BisAF, while the polycondensation of ADCT with BAFL produced the branched PGs with the degree of branching of from 2.2 to 16.9%. The glass transition temperature and the 5% weight-loss temperature of PGs were in the range of 121 to 325 °C, and 419 to 490 °C, respectively. The optical transmittance of the polymers is higher than 90% at 400 nm wavelength, indicating the high transparency of the materials. The refractive indices of the resulting PGs were from 1.635 to 1.779 at D-line.
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.36.385