申请人:F.H. FAULDING & CO. LIMITED
公开号:EP0492007A1
公开(公告)日:1992-07-01
The specification describes a process for producing liquid-loaded powders which are capable of releasing their liquid load when subjected to shearing forces. A cellulosic polymer and a liquid load are dissolved in a polar solvent to form a solution. The solvent is then dispersively evaporated from the solution to form a liquid loaded powder. Dispersive evaporation of the solvent in a spray drying tower is described. Cellulosic polymers exemplified in the specification include cellulose triacetate, an ethyl cellulose and a cellulose propionate. Solvents exemplified include methylene chloride, ethyl acetate and acetone. Uses of the liquid loaded powder described include a carrier for fragrances used in toilet soap formulation, a sunscreen formulation in powder form, an insect repellent in powder form, a baby oil and a moisturizer in powder form.
本说明书描述了一种生产液态负载粉末的工艺,这种粉末在受到剪切力时能够释放其液态负载。纤维素聚合物和液体载荷溶解在极性溶剂中形成溶液。然后从溶液中分散蒸发溶剂,形成液体负载粉末。描述了溶剂在喷雾干燥塔中的分散蒸发。说明书中举例说明的纤维素聚合物包括三醋酸纤维素、乙基纤维素和丙酸纤维素。举例说明的溶剂包括二氯甲烷、乙酸乙酯和丙酮。所述液态负载粉末的用途包括用于香皂配方的香料载体、粉末状防晒配方、粉末状驱虫剂、婴儿油和粉末状保湿剂。