A process for preparing peroxide-based bleach media and concentrated bleach compositions for use in carrying out that process
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0008475A1
公开(公告)日:1980-03-05
A process for preparing peroxide-based bleach media and concentrated bleach compositions for use in carrying out that process, the process comprising incorporating in an aqueous medium a peroxide-based bleach and an activator therefor.
In order to provide a bleach medium which is effective at temperatures at which home laundering is conventionally carried out the activator so incorporated is a cyanoamine and the medium is maintained alkaline, if necessary by the incorporation of a buffering agent. The cyanomaines are those of equivalent weight 44 to 600 which have the molecular formula:
, in which R, and Rz represent hydrogen or Group IA metal atoms (with certain provisos) or certain hydrocarbyl, alkanoyl, ethoxylate, or propoxylate, cyanoamino or polyalkenylamino groups or in which R, and R2 taken together with the amino nitrogen atom to which they are attached form either (a) a 4 to 6 carbon atom-containing ring in which defined substituents may optionally be present on one or more of said carbon atoms or (b) a heterocyclic ring of 5 to 7 atoms which contains hetero atoms selected from 0, S and N-R3, in which R3 can be a hydrogen atom or certain hydrocarbyl, alkanoyl or cyano groups or another heterocyclic ring of 5 to 7 atoms, and in which defined substituents may optionally be present on one or more of the heterocyclic ring carbon atoms.
The bleach and the activator can be incorporated in the aqueous medium separately or in the form of a liquid or solid concentrated bleach composition.
一种制备过氧化物漂白剂介质和用于该工艺的浓缩漂白剂组合物的工艺,该工艺包括在水介质中加入过氧化物漂白剂及其活化剂。
为了使漂白介质在通常进行家庭洗涤的温度下有效,所加入的活化剂为氰胺,介质保持碱性,必要时加入缓冲剂。氰胺的等效重量为 44 至 600,分子式为
其中 R 和 Rz 代表氢或第 IA 组金属原子(带某些但书)或某些烃基、烷酰基、乙氧基或 丙氧基、氰基氨基或聚烯基氨基,或其中 R 和 R2 与它们所连接的氨基氮原子一起形成 (a) 一个含 4 至 6 个碳原子的环,其中定义的取代基可任选存在于一个或多个所述碳原子上;或 (b) 一个含 5 至 7 个原子的杂环,其中含有选自 0、S 和 N-R3 的杂原子,其中定义的取代基可任选存在于一个或多个所述碳原子上、S 和 N-R3,其中 R3 可以是氢原子或某些烃基、烷酰基或氰基,或另一个 5 至 7 个原子的杂环,其中定义的取代基可以选择性地存在于一个或多个杂环碳原子上。
漂白剂和活化剂可以分别或以液体或固体浓缩漂白剂组合物的形式加入水介质中。