| 摘要 |
<p>Bleach activators and the peroxygen-based oxidising species formed in situ from a peroxygen source and a bleach activator, the bleach activator having formula (I) in which R represents an optionally substituted alkenyl function having at least 2 carbon atoms in the alkenyl chain which forms a cyclic structure with -N- and -C(O)- and R1 represents a C¿1-30? alkyl or aryl group; or has the formula -R?2¿- COX where X may be OH, OM (where m is a metal ion), -ONR34 (where R3 are each independently selected from H and C¿1-4? alkyl), a halogen atom, amine, C1-30 alkyl or alkoxy or a leaving group and R?2¿ is a C¿1-30? alkylene or arylene group with the proviso that where R is (CH2)5, R?1¿ represents a C¿3-9? branched alkyl group or a C10-30 alkyl or aryl group or a C9-10 branched aralkyl group; or has the formula -R?2¿-COX and R2 is a C¿3-10? branched alkyl group or C11-30 alkylene or arylene group, or a C9-10 branched alkarylene. Compositions including these bleach activators in combination with conventional bleach activators such as tetraacylated alkylene diamines, particularly TAED or SNOBS give particularly useful cleaning properties.</p> |
