Patent ID: 11952546
Assignee: TOTAL MARKETING SERVICES
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A composition for scavenging hydrogen sulphide and mercaptans in hydrocarbon streams, said composition comprising an oxazolidine compound and an additive,
the additive being the reaction product of a compound (A) with a compound (B), optionally followed by a quaternization reaction of the reaction product of (A) and (B) with a compound (C), wherein the weight ratio of oxazolidine compound(s) to said additive(s) ranges from 1 to 100,
wherein:
Compound (A) is a polyisobutenyl succinic anhydride (PIBSA),
Compound (C) is a quaternizing agent, and
Compound (B) is selected from:
primary polyamines of formula (II):

H2N—[(CHR3—(CH2)p—CHR4)q—NH]m—H

wherein:
R3 and R4, which are identical or different, represent hydrogen or an alkyl or alkenyl group comprising from 1 to 4 carbon atoms,
q is an integer varying from 1 to 3,
m is an integer varying from 1 to 10 and
p is an integer equal to 0 or 1;
or
from the group consisting of: N,N-dimethylaminopropylamine, N,N,N-tris(aminoethyl)amine, N,N-dibutylaminopropylamine, N,N-diethylaminopropylamine, N,N-dimethylaminoethylamine, 1-(3-aminopropyl)imidazole, 4-(3-aminopropyl) morpholine, 1-(2-aminoethyl)piperidine, 3,3-diamino-N-methyldipropylamine, and 313-bisamino(N,N-dimethylpropylamine), and N′-(3-(dimethylamino)propyl)-N,N-dimethyl-1,3-propanediamine.