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    • 3. 发明申请
    • A PROCESS FOR PREPARING A POWDER
    • 制备粉末的方法
    • WO2009158448A1
    • 2009-12-30
    • PCT/US2009/048558
    • 2009-06-25
    • THE PROCTER & GAMBLE COMPANYTANTAWY, Hossam, HassanSOMERVILLE ROBERTS, Nigel, PatrickHARROGATE, UrwinYORK, David, William
    • TANTAWY, Hossam, HassanSOMERVILLE ROBERTS, Nigel, PatrickHARROGATE, UrwinYORK, David, William
    • C11D11/02C11D11/04C11D11/00
    • C11D11/02C11D3/0052C11D11/0082C11D11/04
    • The present invention relates to a process for preparing a powder comprising: (i) anionic detersive surfactant; (ii) from 0wt% to 10wt% zeolite builder; (iii) from 0wt% to 10wt% phosphate builder; and (iv) from 0wt% to 15wt% silicate salt; wherein the process comprises the steps of: (a) forming a slurry that comprises a volatile compound; and (b) spraying the slurry through a nozzle into a drying apparatus; and (c) drying the slurry to form a powder, wherein the slurry enters the nozzle at conditions such that either: (I) at the temperature at which the slurry enters the nozzle, the slurry is at a pressure that is equal to or greater than the vapour pressure of the volatile component, and wherein, the slurry enters the nozzle at a temperature such that the vapour pressure of the volatile compound is above the pressure in the drying apparatus; or (II) the volatile component is in supercritical form when the slurry enters the nozzle, and wherein, the conditions in the drying apparatus are such that when the volatile component enters the drying apparatus, at least a portion of the volatile component is in gaseous form.
    • 本发明涉及一种制备粉末的方法,包括:(i)阴离子去污表面活性剂; (ii)0重量%至10重量%的沸石助洗剂; (iii)0重量%至10重量%的磷酸盐助洗剂; 和(iv)0重量%至15重量%的硅酸盐; 其中所述方法包括以下步骤:(a)形成包含挥发性化合物的浆料; 和(b)通过喷嘴将浆料喷射到干燥装置中; 和(c)干燥浆料以形成粉末,其中浆料在以下条件下进入喷嘴:(I)在浆料进入喷嘴的温度下,浆料的压力等于或大于 比挥发性成分的蒸汽压高,并且其中浆料以使得挥发性化合物的蒸气压高于干燥装置中的压力的​​温度进入喷嘴; 或(II)当浆料进入喷嘴时,挥发性成分是超临界形式,并且其中干燥装置中的条件使得当挥发性成分进入干燥装置时,挥发性成分的至少一部分为气态 形成。
    • 8. 发明申请
    • A SPRAY-DRYING PROCESS
    • 喷雾干燥过程
    • WO2009158221A1
    • 2009-12-30
    • PCT/US2009/047298
    • 2009-06-15
    • THE PROCTER & GAMBLE COMPANYTANTAWY, Hossam, HassanSOMERVILLE ROBERTS, Nigel, PatrickHOWE, SimonCALDWELL, Stuart, Andrew
    • TANTAWY, Hossam, HassanSOMERVILLE ROBERTS, Nigel, PatrickHOWE, SimonCALDWELL, Stuart, Andrew
    • C11D11/02C11D11/04
    • C11D11/04C11D11/02
    • The present invention relates to a process for preparing a spray-dried powder comprising (i) anionic detersive surfactant; (ii) from 0 wt% to 10 wt% zeolite builder; (iii) from 0 wt% to 10 wt% phosphate builder; and (iv) optionally from 0 wt% to 15 wt% silicate salt; wherein the process comprises the steps of : (a) forming an alkaline slurry in a mixer, the slurry having a viscosity of from 0.5 to 50.0 Pas at a temperature of 70 °C and at a shear rate of 50 s-1, wherein the alkaline slurry is shear thinning; and (b) transferring the alkaline slurry from the mixer through at least one pump to a spray pressure nozzle; (c) contacting a viscosity increasing agent to the alkaline slurry after the mixer and before the spray pressure nozzle so as to increase the viscosity of the alkaline slurry to form a viscous alkaline slurry, step (c) being carried out at an average shear rate of from 10 s-1 to 150 s-1; (d) spraying the viscous alkaline slurry through the spray pressure nozzle into a spray-drying tower; (e) spray-drying the viscous alkaline slurry to form a spray-dried powder; and (f) optionally, contacting an alkalinity source with the alkaline slurry and/or the viscosity increasing agent, and/or the viscous alkaline slurry.
    • 本发明涉及一种制备喷雾干燥粉末的方法,包括(i)阴离子去污表面活性剂; (ii)0重量%至10重量%的沸石助洗剂; (iii)0重量%至10重量%的磷酸盐助洗剂; 和(iv)任选的0重量%至15重量%的硅酸盐; 其中所述方法包括以下步骤:(a)在混合器中形成碱性浆料,所述浆料在70℃的温度和50s -1的剪切速率下具有0.5至50.0Pas的粘度,其中 碱性浆料是剪切稀化; 和(b)将来自混合器的碱性浆料通过至少一个泵转移到喷雾压力喷嘴; (c)在混合器之后和喷雾压力喷嘴之前使粘度增加剂与碱性浆料接触,以增加碱性浆料的粘度以形成粘性碱性浆料,步骤(c)以平均剪切速率 为10秒-1至150秒-1; (d)将粘性碱性浆料通过喷雾压力喷嘴喷射到喷雾干燥塔中; (e)喷雾干燥粘性碱性浆料以形成喷雾干燥的粉末; 和(f)任选地,使碱度源与碱性浆料和/或增粘剂和/或粘性碱性浆液接触。