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Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Zhu, S.W. / Shi, W.F.

A series of hyperbranched polyurethane acrylates containing phosphorus were prepared by reaction of a phosphorus-containing triol with toluene-2,4-diisocyanate and hydroxyethyl acrylate at given ratios. The resins obtained were found to polymerize rapidly in the presence of a photofragmenting initiator under UV irradiation, and the maximum polymerization rate increased with temperature up to 135 deg C, then decreased quickly. The UV cured films have fire retardancy with a limiting oxygen index of 27.0.

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Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Zhu, S.W. / Shi, W.F.

A series of hyperbranched polyurethane acrylates containing phosphorus were prepared by reaction of a phosphorus-containing triol with toluene-2,4-diisocyanate and hydroxyethyl acrylate at given ratios. The resins obtained were found to polymerize rapidly in the presence of a photofragmenting initiator under UV irradiation, and the maximum polymerization rate increased with temperature up to 135 deg C, then decreased quickly. The UV cured films have fire retardancy with a limiting oxygen index of 27.0.

Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Zhu, S.W. / Shi, W.F.

A series of hyperbranched polyurethane acrylates containing phosphorus were prepared by reaction of a phosphorus-containing triol with toluene-2,4-diisocyanate and hydroxyethyl acrylate at given ratios. The resins obtained were found to polymerize rapidly in the presence of a photofragmenting initiator under UV irradiation, and the maximum polymerization rate increased with temperature up to 135 deg C, then decreased quickly. The UV cured films have fire retardancy with a limiting oxygen index of 27.0.

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Title:

Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Contributors:

Zhu, S.W. (author) / Shi, W.F. (author)

Published in:

Polymer International ; 51 ; 223-227

Publication date:

2002

Size:

5 Seiten, 7 Bilder, 2 Tabellen, 18 Quellen

ISSN:

DOI:

https://doi.org/10.1002/pi.827

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Polyurethan , Acrylat , Ultraviolettbestrahlung , Aushärten (Polymer) , Photopolymerisation , Entzündungsverzögerung , Polymerfilm , chemische Synthese , verzweigtes Polymer , FT-IR-Spektroskopie , Osmometrie , Phosphor , LOI-Wert

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