ANTI-CORROSION COMPOSITIONS BASED ON PHOSPHATE AND PHOSPHITE

摘要

THE PRESENT INVENTION AIMS AT COMPOSITIONS CONSTITUTED: /P P A) OF ONE OR MORE COMPOUNDS OF FORMULA I: BR/ (CF DRAWING IN BOPI) BR/ /P P B) AND ONE OR MORE COMPOUNDS OF FORMULA II: BR/ (CF DRAWING IN BOPI) BR/ FORMULAS IN WHICH R IS CHOSEN AMONG THE ALKYL GROUPS IN CC, (ALKYL IN CC) -ARYL IN CC, -CO-ALKYLE IN CC AND -CO-ALCENYL IN CC, EACH M MEANS INDEPENDENTLY HYDROGEN, AN ION OF ALKALINE METAL OR A MOLAR EQUIVALENT OF AN ALKALINE EARTH METAL, R MEANS M AS DEFINED PREVIOUSLY OR ONE FORMULA GROUP: R- (OC-H) -, EACH N MEAN INDEPENDENTLY 2 OR 3 AND EACH X MEAN INDEPENDENTLY 0 OR A WHOLE NUMBER OF 1 TO 15 INCLUDED, R INDEPENDENTLY OF R, WHEN MEANING R, AS DEFINED HIGHER, EACH M MEANS INDEPENDENTLY 2 OR 3, AND MEANS 0 OR AN ENTIRE NUMBER OF 1 TO 15 INCLUDED. /P P SUCH COMPOSITIONS ARE USEFUL AS CORROSION INHIBITORS.