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Acrylated polyurethanes by reactive extrusion

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Abstract

A one-step acrylated polyurethanes prepolymers synthesis by reactive extrusion and bulk reaction is discussed.

These oligomers are obtained by a simultaneous reaction of MDI, polycaprolactone and hydroxyethyl-acrylate. In order to obtain a high reaction conversion within the extruder, tin laurate catalyst was used at 90°C. In these conditions, an appropriate radical initiator can be introduced during the extrusion without double bond polymerization. Comparing bulk and reactive extrusion prepared products, oligomer Tg were respectively 18°C and +8°C for oligomers and +18°C and +27°C for the issued networks.

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Authors and Affiliations

  1. Laboratoire des Matériaux Macromoléculaires, URA CNRS no 507, Institut National des Sciences Appliquées de Lyon, Bâtiment 403, F-69621, Villeurbanne Cedex, France

    S. Coudray, J. P. Pascault & M. Taha

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  1. S. Coudray
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  2. J. P. Pascault
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  3. M. Taha
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Coudray, S., Pascault, J.P. & Taha, M. Acrylated polyurethanes by reactive extrusion. Polymer Bulletin 32, 605–610 (1994). https://doi.org/10.1007/BF00973908

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  • DOI: https://doi.org/10.1007/BF00973908

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