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Synthesis and application of acrylic colloidal unimolecular polymers as a melamine thermoset system
Author(s) -
Mistry Jigar K.,
Natu Ameya M.,
Mark Michael R.
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40916
Subject(s) - materials science , melamine , thermosetting polymer , melamine resin , polymer , gloss (optics) , acrylic acid , polymer chemistry , curing (chemistry) , solvent , monomer , chemical engineering , acrylic resin , coating , chemical resistance , composite material , chemistry , organic chemistry , engineering
Acrylic polymers were synthesized with a ratio of 1 : 7 or 1 : 8 of acrylic acid to acrylic ester monomers to produce an acid‐rich resin. The polymers were water reduced and solvent was stripped to produce colloidal unimolecular polymers (CUPs). These particles were typically 3–9 nm in diameter depending on the molecular weight. They were then formulated into a clear coating with melamine as the crosslinker with thermal curing. Compared to commercial latex films, these melamine‐cured acrylic CUPs had a distinct advantage of having a near‐zero volatile organic compound, better availability of surface functional groups , and improved water resistance. The coatings were evaluated for their methyl ethyl ketone resistance, adhesion, hardness, gloss, flexibility, abrasion , and impact resistance properties. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40916.