Patent ID: 7638472

Claim:
A cleaning solution consisting of, based on the total weight of the solution: more than 50% by weight of at least one lactone (component A); 1 to 10% by weight of at least one surfactant compound (component B) having a HLB ranging from 8 to 15 and selected from the group consisting of compounds of formula: wherein: R 1 denotes a hydrocarbon group comprising from 1 to 20 carbon atoms; n″ is an integer from 1 to 5, X denotes a valence link, —O—, —OCH 2 , C═O or (CH 2 ) k , k being an integer varying from 1 to 2; Y denotes (RO) j H wherein j is an integer ranging from 2 to 40, and R is a divalent hydrocarbon group, and compounds of formula: wherein l is an integer from 6 to 13 and m is an integer from 3 to 15; and at least another component selected from: a component C of formula: wherein: n denotes an integer from 0 to 5, and R′ is an alkyl group or an alkoxy group —[O-Z] n′ -H in which Z is a divalent alkyl group and n′ is an integer from 0 to 10, and a component D of formula: wherein: R 2 and R 3 , being identical or different, are alkyl groups having from 1 to 4 carbon atoms, and R 4 is H or an alkyl group having from 1 to 4 carbon atoms.