Bleaching composition

A bleaching composition which comprises (a) a peroxygen compound capable of yielding hydrogen peroxide in an aqueous solution and (b) an organic peracid precursor having the formula (I):

• ##STR37## where R.sub.1 is selected from the group consisting of a straight-chain or branched-chain C.sub.1 -C.sub.20 alkyl or alkenyl group which may have a substituent group, an unsubstituted or C.sub.1 -C.sub.20 alkyl-substituted aryl group;
• X is ##STR38## Y is selected from the group consisting of ##STR39## where n is an integer of 1 to 10, R.sub.2 and R.sub.3 each is selected from the group consisting of a C.sub.1 -C.sub.3 alkyl group which may have a substituent group,
• R.sub.4 and R.sub.5 each is selected from the group consisting of a C.sub.1 -C.sub.12 alkylene group which may have a substituent group, ##STR40## L is a leaving group selected from the group consisting of ##STR41## where R.sub.6 and R.sub.9 each is an alkyl group, R.sub.7 and R.sub.8 each is selected from the group consisting of hydrogen or an alkyl group, and M.sup.+ denotes an alkali metal ion or hydrogen ion or a glycerin residue or sugar residue, and X is selected from the group consisting of an inorganic or organic counter ion, provided that when L is selected from the group consisting of ##STR42## X.sup.- does not exist.

A bleaching composition which comprises (a) a peroxygen compound capable of yielding hydrogen peroxide in an aqueous solution and (b) an organic peracid precursor having the formula (I):

• ##STR48## where R.sub.1 is selected from the group consisting of a straight-chain or branched-chain C.sub.1 -C.sub.20 alkyl or alkenyl group which may have a substituent group, and an unsubstituted or C.sub.1 -C.sub.20 alkyl-substituted aryl group, X is ##STR49## Y is R.sub.5 R.sub.2 and R.sub.3 each is selected from the group consisting of a C.sub.1 -C.sub.3 alkyl group which may have a substituent group,
• R.sub.4 and R.sub.5 each is selected from the group consisting of a C.sub.1 -C.sub.12 alkylene group which may have a substituent group, ##STR50## L is a leaving group selected from the group consisting of ##STR51## where R.sub.6 and R.sub.9 each is an alkyl group, R.sub.7 and R.sub.8 each is selected from the group consisting of hydrogen or an alkyl group, and M.sup.+ denotes an alkali metal ion or hydrogen ion or a glycerin residue or sugar residue, and X is selected from the group consisting of an inorganic or organic counter ion, provided that when L is selected from the group consisting of ##STR52## X.sup.- does not exist.

A bleaching composition which comprises (a) a peroxygen compound capable of yielding hydrogen peroxide in an aqueous solution and (b) an organic peracid precursor having the formula (I):

• ##STR53## where R.sub.1 is selected from the group consisting of a straight-chain or branched-chain C.sub.1 -C.sub.20 alkyl or alkenyl group which may have a substituent group, and an unsubstituted or C.sub.1 -C.sub.20 alkyl-substituted aryl group, X is ##STR54## Y is R.sub.5 R.sub.2 and R.sub.3 each is selected from the group consisting of a C.sub.1 -C.sub.3 alkyl group which may have a substituent group,
• R.sub.4 and R.sub.5 each is selected from the group consisting of a C.sub.1 -C.sub.12 alkylene group which may have a substituent group, ##STR55## L is a leaving group selected from the group consisting of ##STR56## where R.sub.6 and R.sub.9 each is an alkyl group, R.sub.7 and R.sub.8 each is selected from the group consisting of hydrogen or an alkyl group, and M.sup.+ denotes an alkali metal ion or hydrogen ion or a glycerin residue or sugar residue, and X is selected from the group consisting of an inorganic or organic counter ion, provided that when L is selected from the group consisting of ##STR57## X.sup.- does not exist.