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1、Wateborne Polyurethane Resins & Hardeners ? Dr. Lucy Bai/? BayerMaterialScience ? Sept 26, 2010, Guangzhou Agenda? ?WB PU Background? ?WB PU Performance & Properties? ?Categories of WB PU? ?WB PU Applications? ?Comparsion of SB PU Vs WB PU? ? ?Summary? Development of Polyisocyanate? Agenda? ?WB PU B
2、ackground? ?WB PU Performance & Properties? ?Categories of WB PU? ?WB PU Applications? ?Comparsion of SB PU Vs WB PU? ? ?Summary? WB PU Performance & Properties ? ?Good balance of hardness and flexibility? ?Excellent abrasion resistance? ?Excellent chemical and stain resistance? ?Good film build up
3、and appearance? ?Excellent weather stability? ?Curable at low temperature? Agenda? ?WB PU Background? ?WB PU Performance & Properties? ?Categories of WB PU? ?WB PU Applications? ?Comparsion of SB PU Vs WB PU? ? ?Summary? Categories of WB PU? ?2K WB PU? ?1K WB PU? ?UV curable WB PU UV? * OHOH n Princ
4、iple of WB 2KPrinciple of WB 2K PUPU? + Polyisocyanate OH functional PAC Polyurethane - Network * O NH O NH N H O O O O O n NCO NCO OCN Component 1Component 2 Bayhydrol PAC dispersions overviewBayhydrol PAC dispersions overview?A A? ? A 2470 A 2653 A XP 2770 A 2651 Drying speed A 145 A 2620 A 2469 B
5、ayhydrol Secondary acrylic dispersions The key to waterborne high performance coatings A XP 2965 A 2645 A 2427* * Primary Dispersion A 2546* Chemical Resistance EmulsificationEmulsification- -ability ofability of P Polyisocyanatesolyisocyanates inin WWaterater ?B B? hydrophobic polyisocyanate mixed
6、by hand hydrophobic: high shear forces or low viscous, hydrophilic polyisocyanate - mixing by hand possible Standard type: easily dispersible PET modified HDI-polyisocyanate ?1stgeneration: Bayhydur 3100 (polyetherurethane modified trimer). HydrophylicHydrophylic P Polyisocyanatesolyisocyanates ? hy
7、drophobic hydrophilic idealized structure H NO O O O O O O R O N N N O OO OCN OCN N N N O OO OCN N H N O O O O O O O O R O N N N O OO OCN OCN OCN ?2ndgeneration: Bayhydur 305 (polyetherallophanate modified trimer). More hydrophylic, higher NCO functionality, high transparency. X = aminosulfonic acid
8、 salt New generation: anionically modified HDI-trimers ?Bayhydur XP 2487/1, low hidrophilicity, medium dispersibility. ?Bayhydur XP 2655, low viscosity, medium hidrophilicity, easy hand-mixing. NewNew H Hydrophylicydrophylic P Polyisocyanatesolyisocyanates?PICPIC R3NH + NN N OCN N H N OO O O R XSO3
9、OCN - Anionically- vs PET-modified trimers ?Solvent free, low viscous. ?Lower amount of hydrophilic moieties. ?High NCO content. ?Faster drying & hardness development. ?Improved chemical resistance. ?Unique in the market, protected by patent. Hydrogen bonds phys. x-linking Segmented structure-hard/s
10、oft segments Huge raw material poolproperty diversity Polyurethane dispersions (PUD) Hardness and flexibility Mechanical properties Alkyd modified PUDs Improved chemical resistance High gloss 1K WB PU1K WB PU?PUPU Few hydrogen bonds phys. x-linking Uns. fatty acids - oxidatively drying Application p
11、roperties and structural characteristics Abrasion resistance Hardness BHMR NMP-free Bayhydrol PUDBayhydrol PUD T Toolboxoolbox forfor WoodWood? ? Bayhydrol UH 2593/1 fatty acid modified 35% solid content Bayhydrol UH 2558 hard, elastic 38% solid content Bayhydrol UH 2557 fatty acid modified 35% soli
12、d content UV curable WB PU UVUV curable WB PU UV?PUPU NCO NCO NCO OCN OH OH OH HO + PolyisocyanatePolyol Fully Cured PU Coating 2K PUR coating?PU UV curable PU dispersion UV?PUD NCO NCO NCO OCNOH OH HO + MW 200.000 UV Curable Polyol Polyisocyanate UV Curable PU Dispersion UV Light (e.g. polyacrylic)
13、 Product Overview?UV? Bdrol UV 2282 Bdrol UV XP 2280 Bdrol UV XP 2687 Bdrol UV XP 2690 Bdrol UV 2317 Bdrol UV XP 2629 Bdrol UV XP 2689 Bdrol UV XP 2775New! Bdrol UV XP 2775 New! Clear furniture coatings Pigmented coatingsWood/parquet primers 132 Outdoor coatings 4 Agenda? ?WB PU Background? ?WB PU P
14、erformance & Properties? ?Categories of WB PU? ?WB PU Applications? ?Comparison of SB PU Vs WB PU? ? ?Summary? WB PU Applications? ?Wood application? ?Plastic application? ?Transportation and OEM application? OEM ?Construction and general industrial application (GI)? Wood? Parquet Furniture Joinery and outdoor Flooring Plastic? 3C Toys PVC flooring Packaging Transportation and OEM?OEM Automotive OEM Automotive interior Transportation train body Construction and
