Solid core particles encapsulated in a single coat of paraffin wax and a small amount of a wax additive, the wax having a melting point of about 40 to about 50°C. The paraffin coat may comprise 20 to 90% by weight of the particle and may be from 100 to 1,500 microns thick. The coat provides improved stability and prolongs the time in which particles encapsulated therewith may remain active in aqueous environments.
The encapsulated particle is made by spraying molten wax onto the particles in a fluidized bed. Liquid or powder cleaning compositions, particularly automatic dishwashing liquid detergents, may incorporate 0.01 to 20% by weight of the composition of the coated wax-encapsulated particles.
固体芯颗粒封装在石蜡和少量蜡添加剂的单层外衣中,石蜡的熔点约为 40 至 50°C。石蜡涂层可占颗粒重量的 20% 至 90%,厚度为 100 至 1 500 微米。石蜡涂层提高了稳定性,延长了封装颗粒在
水环境中保持活性的时间。
封装颗粒是通过在流化床中将熔蜡喷洒到颗粒上制成的。液体或粉末清洁组合物,特别是自动洗碗液清洁剂,可加入 0.01% 至 20% (按重量计)的涂覆蜡包封颗粒。