EP 0050736 B1 19840118 - AMMONIUM SALTS OF POLYMALEIC ACID AND THEIR APPLICATION AS CORROSION INHIBITORS IN MINERAL OILS
Title (en)
AMMONIUM SALTS OF POLYMALEIC ACID AND THEIR APPLICATION AS CORROSION INHIBITORS IN MINERAL OILS
Publication
Application
Priority
DE 3039977 A 19801023
Abstract (en)
[origin: US4435298A] Salts of polymaleic acids, having molecular weights of from 200 to 1,500, with amines, of the formula <IMAGE> where R1 and R2 are identical or different and each is hydrogen, C9-C20-alkyl or C9-C20-alkenyl and R3 is C9-C20-alkyl or C9-C20-alkenyl.
IPC 1-7
IPC 8 full level
C10L 1/22 (2006.01); C10L 1/222 (2006.01); C10L 1/224 (2006.01)
CPC (source: EP US)
C10L 1/2222 (2013.01 - EP US); C10L 1/224 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0050736 A1 19820505; EP 0050736 B1 19840118; AT E5892 T1 19840215; CA 1180031 A 19841227; DE 3039977 A1 19820603; DE 3161978 D1 19840223; US 4435298 A 19840306
DOCDB simple family (application)
EP 81107454 A 19810919; AT 81107454 T 19810919; CA 388536 A 19811022; DE 3039977 A 19801023; DE 3161978 T 19810919; US 30676581 A 19810929