Nitrogen-free hydrogen sulphide and mercaptans scavengers

A composition comprising the reaction product of at least one phenol compound with aldehyde(s), wherein the phenol compound(s) reply to formula (II):

• wherein
• R represents a hydrogen atom or a hydrocarbyl group comprising from 1 to 30 carbon atoms,
• x is 1 or 2,
• R1 is a linear alkyl or alkenyl group having 15 carbon atoms if x is 1,
• R1 is hydrogen if x is 2,
• R2 represents a hydrogen atom or a hydrocarbyl group comprising from 1 to 30 carbon atoms.

A method for scavenging hydrogen sulphide and/or mercaptans in a stream, the method comprising contacting the streams with a scavenging composition,

• wherein the stream is selected from hydrocarbon streams and water-containing streams and
• wherein the scavenging composition comprises the reaction product of at least one phenol compound with aldehyde(s), wherein the phenol compound(s) reply to formula (II):
• wherein
• R represents a hydrogen atom or a hydrocarbyl group comprising from 1 to 30 carbon atoms,
• x is 1 or 2,
• R1 is a linear alkyl or alkenyl group having 15 carbon atoms if x is 1,
• R1 is hydrogen if x is 2,
• R2 represents a hydrogen atom or a hydrocarbyl group comprising from 1 to 30 carbon atoms.