The invention relates to alkali metal percarbonate particles having a content of active oxygen from 10 to about 15.3 wt% and comprising alkali metal silicate having a molar ratio SiO2:M2O, M being an alkali metal, exceeding 3 but not exceeding 5. The invention also relates to its preparation and use as well as a composition containing of such particles.
本发明涉及碱
金属过
碳酸盐颗粒,其活性氧含量为 10 至约 15.3 wt%,并包含碱
金属
硅酸盐,其 SiO2:M2O 的摩尔比(M 为碱
金属)超过 3 但不超过 5。本发明还涉及其制备和使用以及含有这种颗粒的组合物。