3Outline Introduction and background of topic Factors affecting PUD performance and VOC’sProcessPolyurethane structural characteristicsMorphologyRaw materials/compositionCrosslinkingComparison of 1K and 2K PUD attributes and performanceSummary
4Introduction 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
5Introduction 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.
121K 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)
20Summary: 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
21Thank 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