3 Outline Introduction and background of topic Factors affecting PUD performance and VOC’sProcessPolyurethane structural characteristicsMorphologyRaw materials/compositionCrosslinkingComparison of 1K and 2K PUD attributes and performanceSummary
4 Introduction and Background - Thermoplastic Waterborne Finishes for Wood FlooringInadequate mar and black heel mark resistancePoor alcohol/ polar solvent resistance- 2K Waterborne Finishes for Wood FlooringCommercial approach typically using polyaziridines or polyisocyanates as crosslinking components with polyurethane dispersionsExcellent chemical, mar and black heel mark resistance- Many Performance grade Floor Finishes for Wood Flooring are typically high VOCSolventborne PolyurethanesWaterborne Polyurethane at >270 g/L and may contain NMP as cosolvent.Target = Low VOC High Performance 1K PUD Resins that offer properties required for wood flooring applications & improved user friendliness
5 Introduction and Background Generation I = Soft 1K PUD containing NMP Generation II = Soft 1K PUD without NMP Generation III = Harder 1K PUD containing NMP Generation IV = Harder 1K PUD without NMP and capable of formulations at <140 g/L VOC coatings.
12 1K and 2K Ambient Crosslinked Coatings -Helpful for obtaining required performance while maintaining low VOCs2K Crosslinked Polymer:Applicator mixes (1) crosslinker + (2) polymer base on the job: requires proper measurement and mixing, potential exposureChemical reaction typically starts when crosslinker is addedMixture needs to be used before pot life expires1K Self-Crosslinking Polymer:Crosslinking mechanism is built into the polymerChemical crosslink reaction is activated as finish driesFor on-site floor finishes this is at low or ambient temperatures (4˚-32˚C)
20 Summary: Low VOC High Performance 1K Waterborne Polyurethanes Engineered for low VOC NMP-free formulation as a 1K wood floor finish comparable to two component PUD performance.No additional crosslinker required – no pot-life issues, no mixing issues, no handling issues, reduced waste and disposal costTarget: NMP free, <140g/L, 2K performanceEasy to apply, user friendly, quick dry – multiple coats per dayPolymer crosslinks upon application as it dries – as a result coating produced have:Rapid hardness development and abrasion resistanceCleaners- and alcohol- resistance on-par with 2K WB systemsComparable sport floor wear to commercial 2K crosslinked PUDsExcellent Adhesion to solventborne stains
21 Thank You For Attending and To The People Who Helped Make it Happen:Anthony PajerskiGeorge AhrensJonathan BirdSvetlana LernerDiawn JonesTony KropinakMatt HaneyLisa BlevinsCharles NelsonNaser PourahmadyBob SamelsonVic Stanislawczyk