Laundry additive product

Claim 1

A laundry additive product adapted for the removal of stains and consisting essentially of (a) a substrate comprising a non-particulate solid article in the form of a sheet, block, ring, ball, rod or tube, said article possessing sufficient structural integrity under wash conditions to be recovered substantially intact at the end of the laundry cycle, in water releasable combination with, (b) an organic peroxy compound precursor selected from the group consisting of imides, acyl hydrazides, acylated oximes, anhydrides, and esters wherein the weight ratio of the precursor to the substrate lies in the range from 30:1 to 1:10, and (c) a surfactant system comprising an alkoxylated nonionic surfactant having an HLB in the range 8.0-17.0 and a cationic surfactant having the empirical formula: R m 1 R x 2 Y L Z wherein R 1 is a hydrophobic organic group containing alkyl chains optionally including aryl groups and which may also contain ether linkages, ester linkages, or amide linkages, and containing a total of from 8 to 20 carbon atoms, m is a number from one to three, and no more than one R 1 can have more than 16 carbon atoms when m is 2 or more than 12 carbon atoms when m is 3, R 2 is a substituted or unsubstituted alkyl group containing from one to four carbon atoms or a benzyl group, provided that not more than one such benzyl group is directly attached to each Y group, x is a number from zero to three, the remainder of any carbon atom positions being filled by hydrogens, Y is selected from the group consisting of ##STR16## L is a number from 1 to 4, Z is a water-soluble anion in a number to give electrical neutrality, the cationic surfactant being water dispersible in admixture with the nonionic surfactant, the weight ratio of the nonionic surfactant to the cationic surfactant being in the range 20:1 to 1:2, the weight ratio of the surfactant system to the substrate being in the range 20:1 to 1:5.