用于改善多环颜料分散性的新型聚合物分散剂.pdf

1、 2025 The Lubrizol Corporation.All rights reserved.Novel Polymeric Dispersants forImproved Dispersion of PolycyclicPigmentsAnthony Gilbert 2025 The Lubrizol Corporation.All rights reserved.Defining“Polycyclic”pigmentsIntroduction to dispersant designTypes of water borne dispersantsAnchoring mechanis

2、ms and interactionsNovel dispersant for“polycyclic”pigmentsPerylene black case studyPerylene red case studyIndanthrone blue case studyHigh jetness carbon black case studyAgenda2 2025 The Lubrizol Corporation.All rights reserved.High degree of aromaticity in the form of conjugated ring structuresCarb

3、on blackCarbon black,perylenes(black,red)perylenes(black,red),indanthroneindanthrone,quinacridone,graphite,etc.“Polycyclic”Pigments3Carbon Black(PBk.7)Perylene Red(PR.179)Indanthrone Blue(PB.60)2025 The Lubrizol Corporation.All rights reserved.Polymeric Dispersant Design Considerations4Stabilizing C

4、hainsStabilizing ChainsProvide steric barrier to preventflocculation,must be soluble incontinuous phaseAnchor GroupsAnchor GroupsAdsorb to the pigment surfaceHydrogen bondingDipole interactionsVan der Waals/hydrophobicityMolecular WeightMolecular WeightMobilityFlow and physical formStability 2025 Th

5、e Lubrizol Corporation.All rights reserved.Classes of Polymeric Dispersants5SingleSingleAnchorAnchor(SA)(SA)DispersantDispersantMultipleMultipleAnchorAnchor(MA)(MA)DispersantDispersantLow molecular weightHigh molecular weightIncreasing stability of dispersionFaster wetting of pigment 2025 The Lubriz

6、ol Corporation.All rights reserved.Common Water Borne Dispersant Types6Single anchor,single chainCommonly acids(carboxy,phosphate)Hydrogen and polarinteractions withparticlesBlock copolymersCommonly acrylics(acrylic acid,hydrophobic acrylates)Hydrogen and polarinteractions with somevan der Waals whe