Liquid detergent composition

1. A liquid detergent composition comprising:

(a) hydrogen peroxide or a compound forming hydrogen peroxide in water,

(b) 0.1 to 10 mass % of a bleaching activator of a compound having an ester linkage represented by the following formula (I):

R—C(═O)-LG  (1)

wherein R represents an about C6 to C13 linear or branched alkyl or alkenyl group, an aryl group, or an aryl group substituted with an alkyl group, and

LG is a leaving group selected from one of the following:

wherein M represents a hydrogen atom, an alkali metal or an alkaline earth metal,

(c) 45 to 80 mass % of a nonionic surfactant,

(d) water,

(e) at least one or more compounds selected from the group consisting of boric acid, borax and borate, and

(f) a polyol compound,

wherein the liquid detergent composition having a pH value of 4 to 7 at 20° C.,

a molar ratio of component (f)/component (e) is from 1.5 to 4, and

the liquid detergent composition has a pH value of 8.5 or more and less than 10.5 at 20° C. after dilution with water in 1000-fold excess by volume.

2. The liquid detergent composition according to claim 1 , wherein the (c) nonionic surfactant comprises an oxyethylene group- and oxypropylene group-containing nonionic surfactant of the following formula (4):

R 4a —O[(EO) a /(PO) b ]—H  (4)

wherein R 4a is an alkyl group or alkenyl group having 10 to 18 carbon atoms,

a is the average number of units added and is a number of from 0 to 20,

b is the average number of units added and is a number of from 0 to 20, provided that a and b are not simultaneously 0, and

EO and PO form a random copolymer or a block copolymer.

3. The liquid detergent composition according to claim 1 , which further comprises (g) 0.01 to 40 mass % of solvent.

4. A method of washing clothes, which comprises the steps of diluting the liquid detergent composition of claim 1 with water in 50- to 1500-fold excess by volume and heating the dilution at 20 to 60° C. to use it in order to achieve at least one or more effects selected from bleaching, washing, bacteria elimination and deodorization.

5. A process for producing the liquid detergent composition according to claim 1 , which comprises the steps of preparing a mother liquor, the mother liquor having a pH of from 3 to 7 and comprising the components (c), (d), (e) and (f) mixed therein, and adding the components (a) and (b) simultaneously or separately to the mother liquor.

6. The process for producing a liquid detergent composition according to claim 5 , wherein the component (b) previously mixed with a part of the component (c) is added to the mother liquor.

7. The liquid detergent composition according to claim 1 , wherein the pH of the liquid detergent composition before dilution at 20° C. is from 4.6 to 6.5.

8. The liquid detergent composition according to claim 1 , wherein the (f) polyol compound is selected from the group consisting of glycerol, diglycerol, triglycerol, an alkyl polyglyceryl ether, a sugar alcohol, a reducing saccharide and a polysaccharide.

9. The liquid detergent composition according to claim 8 , wherein the (f) polyol compound is selected from the group consisting of glycerol, diglycerol, triglycerol, an alkyl polyglyceryl ether having 1 to 10 carbon atoms in the alkyl group thereof, sorbitol, mannitol, maltitose, inositol, phytic acid, starch, dextran, xanthan gum, guar gum, curdlan, pullulan, amylose, cellulose, glucose, apiose, arabinose, galactose, lyxose, mannose, gallose, aldose, idose, talose, xylose, fructose, and a derivative of glucose, apiose, arabinose, galactose, lyxose, mannose, gallose, aldose, idose, talose, xylose or fructose.