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Photoreactive hyperbranched urethane acrylates modified with a branched saturated fatty acid

Authorized Users Only
2006
Authors
Džunuzović, Enis
Tasić, S.
Božić, B.
Jeremić, Katarina B.
Dunjić, Branko
article (publishedVersion)
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Abstract
Urethane acrylate resins based on partially modified aliphatic hyperbranched polyesters (HBP) were synthesized. HBP of the second and the third pseudo-generation were synthesized from 2,2-bis(hydroxymethyl)propionic acid and di-trimethylol propane. The modification of 60% of the OH end-groups was carried out with isononanoic acid. Urethane acrylates with different degrees of acrylation were obtained by reaction of partially modified HBP and different amounts of acrylate-isocyanate adduct (NCO), which had been previously obtained by reaction of equimolar amounts of isophorone diisocyanate and 2-hydroxyethyl acrylate. The synthesized samples were characterized by FT-IR, H-1 and C-13 NMR spectroscopy and GPC. The rheological properties of uncured samples and the mechanical and thermal properties of UV cured urethane acrylates diluted with 20 wt.% hexanediol diacrylate were examined. The modification of the OH end-groups with isononanoic acid caused a rapid decrease in the viscosity of the... HBPs. The examined properties of the urethane acrylates mainly depended on the degree of acrylation.

Keywords:
urethane acrylate / aliphatic hyperbranched polyester / isononanoic acid / UV curing
Source:
Reactive & Functional Polymers, 2006, 66, 10, 1097-1105
Publisher:
  • Elsevier, Amsterdam
Funding / projects:
  • info:eu-repo/grantAgreement/MESTD/MPN2006-2010/11013/RS// (RS-11013)

DOI: 10.1016/j.reactfunctpolym.2006.01.016

ISSN: 1381-5148

WoS: 000241686000012

Scopus: 2-s2.0-33748304339
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URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1005
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  • Radovi istraživača / Researchers’ publications (TMF)
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Tehnološko-metalurški fakultet

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