Waterborne oil-modified polyurethane coatings via hybrid miniemulsion polymerization

Autor:	J. W. Gooch, F. J. Schork, Hongming Dong
Rok vydání:	2000
Předmět:	Materials science Polymers and Plastics Butyl acrylate General Chemistry Surfaces Coatings and Films Miniemulsion chemistry.chemical_compound Monomer chemistry Chemical engineering Polymerization Polymer chemistry Materials Chemistry Methyl methacrylate Curing (chemistry) Acrylic acid Polyurethane
Zdroj:	Journal of Applied Polymer Science. 76:105-114
ISSN:	1097-4628 0021-8995
DOI:	10.1002/(sici)1097-4628(20000404)76:1<105::aid-app14>3.0.co;2-8
Popis:	As part of a wider effort to develop a new class of waterborne coatings, hybrid miniemulsion polymerization was carried out with acrylic monomers (methyl methacrylate, butyl acrylate, and acrylic acid) in the presence of oil-modified polyurethane resin. Latexes with different ratios of resin to acrylic monomers were synthesized. The monomer emulsions prepared for hybrid miniemulsion polymerization showed excellent shelf-life stability (>5 months) and the polymerization was run free of coagulation. Solvent extraction indicated that the grafting efficiency of polyacrylics was greater than 29% for all the samples produced. A 13C solution NMR spectrum showed that a substantial fraction of the original carbon double bonds (>61%) in oil-modified polyurethane remained after polymerization for film curing. Films obtained from the latexes presented good adhesion properties and fair hardness properties. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 105–114, 2000
Databáze:	OpenAIRE
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