申请人:The Clorox Company
公开号:EP0185522A2
公开(公告)日:1986-06-25
The invention provides novel peracid precursors representative of which is the structure:
wherein R' is alkyl of 1 to 20 carbon atoms; R2 is OH, -O-R3,
and X', X2, Y and Z are individually selected from H, S03, CO2, NO2, NR5+4; halogen, R6 and mixtures thereof:
wherein R3 of -O-R3 is alkyl of 1 to 20 carbon atoms: R4
is alkyl of 1 to 20 carbon atoms: R5 of NR5+4 is selected from H, alkyl of 1 to 24 carbon atoms and mixtures thereof; and R6 is alkyl of 1 to 20 carbon atoms.
In one embodiment of the invention, the novel peracid precursors are combined with a source of hydrogen peroxide and sufficient quantities of buffer to impart an alkaline pH when the composition is placed in aqueous solution. Preferred embodiments of the invention include wherein R2 is hydroxy, and R' is alkyl of 1 to 20 carbon atoms (monoester);
and wherein R2 is
and R1 and R4 are alkyls of 1 to 20 carbon atoms (diester) and may be either symmetrical (i.e., R1=R4) or mixed (i.e., R1≠R4). The mixed diester embodiment appears to provide benefits of mixed hydrophobic-hydrophilic peracid generation to oxidize both hydrophobic and hydrophilic soils. Various detergent adjuncts known to those skilled in the art may be added, such as surfactants, builders, fragrances, antimicrobial compounds and the like.
本发明提供的新型过酸前体具有代表性的结构:
其中 R' 为 1 至 20 个碳原子的烷基;R2 为 OH、-O-R3、
X'、X2、Y 和 Z 单独选自 H、S03、CO2、NO2、NR5+4、卤素、R6 及其混合物:
其中-O-R3 的 R3 是 1 至 20 个碳原子的烷基:R4
是 1 至 20 个碳原子的烷基:NR5+4 的 R5 选自 H、1 至 24 个碳原子的烷基及其混合物;以及 R6 是 1 至 20 个碳原子的烷基。
在本发明的一个实施方案中,新型过酸前体与过氧化氢源和足够量的缓冲剂结合,使组合物置于水溶液中时具有碱性 pH 值。本发明的优选实施方案包括 其中 R2 是羟基,R'是 1 至 20 个碳原子的烷基(单酯);
其中 R2 是
和 R1 和 R4 是 1 至 20 个碳原子的烷基(二酯),可以是对称的(即 R1=R4)或混合的(即 R1≠R4)。混合二酯实施方案似乎具有疏水-亲水混合过酸生成的优点,可以氧化疏水和亲水土壤。可添加本领域技术人员已知的各种洗涤剂辅助剂,如表面活性剂、增效剂、香料、抗菌化合物等。