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5活性染料染色.doc5活性染料染色Thefifthchapterdyeingwithreactivedyesoverview1DefinitionsAdyecontaininganactivegroupinthestructureandformingcovalentbondswithfibers・characteristicsthewatersolublegroupinthestructurecanbedirectlydissolvedinwater;pletechromatography;itisconvenienttouseandwidelyused:excellentwetfastness,lightfastness,fastnesstobleaching;moderateprice・:W-D-B-RreactivegroupR:hereactivityofdyesandthebondingstabilityofdyesandfibers・Forexample,halogenatedthreetriazine,betaethylenesulfoneandsoon.:Ddecidedtodyedyeaffinity,diffusion,color,lightfastnessetc・・Suchasazo,anthraquinone,:affectthereactivityofdyesandthebondingstabilityofdyesandfibers・Aminogroup,aminogroup,aminogroupetc・・water-solublebaseW:hewatersolubilityofdyes・Forexample,sulfonicacidgroup,sulfateestergroup,etc..ordingtothekindsofactivegroupsBoththreetriazinegroups・Twochlorine,three,chlorine,three,threefluorineBetavinylsulfoneAdoubleactivebaseclass;hree-andbeta-vinylchloride;twochlorine-containingthree-triazineHalogenatedpyrimidines:threechloropyrimidines;,reactivity,stability,monvarietiesThermosettingdiffereneehightypeKProcionHMiddletemperaturetypeishigher,betterKNtypeandhigherBtypeColdsolidgoodlowXtype,ProcionMXThree・DyeingprocessandfixingmechanismofreactivedyesDyeingprocessDyeing,fixingandfinishing1,dyeingdyeingcharacteristics:lowaffinity,highdiffusivity,goodlevelness,dyeingrateislowandthetrendwithshortbalancetime・problems:lowutilizationrateofdyes・solvingmeasures:addingelectrolytetopromotedyeing;Lowtemperaturestaining;,fixation(1)definitionUndercertainalkalineandtemperatureconditions,ursbycovalentbinding(bonding)Processonfiber.(2)mechanismNucleophilicsubstitutionbondingmechanismMechanismofnucleophilicadditionbonding3)parisonofbondingan

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