(19)

(11)

EP 0 093 883 A3

(12)	EUROPEAN PATENT APPLICATION

(88) Date of publication A3: 03.04.1985 Bulletin 1985/14 (43) Date of publication A2: 16.11.1983 Bulletin 1983/46 (21) Application number: 83103530 (22) Date of filing: 12.04.1983

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 12.05.1982 US 377412 (71) Applicant: DIAMOND SHAMROCK CORPORATION  ()	(72) Inventor: Villa, Jose L.  ()