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1、WatebornePolyurethaneResins&Hardeners∈??????????Dr.LucyBai/?????BayerMaterialScience??????Sept26,2010,GuangzhouAgenda??òWBPUBackground∈???????òWBPUPerformance&Properties?????????òCategoriesofWBPU∈???????òWBPUApplications∈???????òComparsionofSBPUVsWBPU∈?????⒊?????????
2、?òSummary??DevelopmentofPolyisocyanate??????Agenda??òWBPUBackground∈???????òWBPUPerformance&Properties?????????òCategoriesofWBPU∈???????òWBPUApplications∈???????òComparsionofSBPUVsWBPU∈?????⒊??????????òSummary??WBPUPerformance&Properties∈?????????òGoodbalanceofhardne
3、ssandflexibility?????????òExcellentabrasionresistance?????òExcellentchemicalandstainresistance??????∵???òGoodfilmbuildupandappearance?????催òExcellentweatherstability?????òCurableatlowtemperature?????Agenda??òWBPUBackground∈???????òWBPUPerformance&Properties?????????ò
4、CategoriesofWBPU∈???????òWBPUApplications∈???????òComparsionofSBPUVsWBPU∈?????⒊??????????òSummary??CategoriesofWBPU∈???????ò2KWBPU???∈????ò1KWBPU???∈????òUVcurableWBPUUV??∈????PrincipleofWB2KPU∈???????Component1Component2OCNNCOn**OHOH+NCOOHfunctionalPACPolyisocyanate
5、On**OOHHNNOOPolyurethane-NetworkNHOOBayhydrolPACdispersionsoverview??A????AXP2965BayhydrolA2645SecondaryacrylicdispersionsA2470AXP2770A2653A2651A145A2620ChemicalResistanceA2469A2546*A2427*ThekeytowaterbornehighperformancecoatingsDryingspeed*PrimaryDispersionEmulsific
6、ation-abilityofPolyisocyanatesinWater??B?ч??hydrophobic:highshearforceshydrophobicorpolyisocyanatelowviscous,hydrophilicpolyisocyanate-mixedbyhandmixingbyhandpossibleHydrophylicPolyisocyanates∈???????Standardtype:easilydispersiblePETmodifiedHDI-polyisocyanateOOCNNNid
7、ealizedstructureONOHOOCNOCNNOOOONNOOORNOOONOOHOCNOCNNOOOONNOOOROONOhydrophilicOCNhydrophobic?1stgeneration:Bayhydur3100(polyetherurethanemodifiedtrimer).?2ndgeneration:Bayhydur305(polyetherallophanatemodifiedtrimer).Morehydrophylic,higherNCOfunctionality,hightranspar
8、ency.NewHydrophylicPolyisocyanates?∈??PICNewgeneration:anionicallymodifiedHDI-trimersAnionically-vsPET-modifiedtrimers?Solventfree,
