公开(公告)号：US3630913A

公开(公告)日：1971-12-28

申请号：US3630913D

申请日：1969-05-15

Applicant: ALLIED CHEM

Inventor： SCOTT HERBERT F JR ,  GEORGE PRINCE ,  NOVOTNY JOSEPH ,  ULMER HARRY E

IPC: C09K3/18 ,  C23F11/18

CPC classification number: C23F11/185 ,  C09K3/185

Abstract: A FLUID DEICER COMPOSITION PREFERABLY FOR USE TO DEICE AIRCRAFT RUNWAYS, CONSISTING OF FROM 22 TO 26 WEIGHT PERCENT OF UREA, 28 TO 34 WEIGHT PERCENT AMMONIUM NITRATE, AND 25 TO 30 WEIGHT PERCENT ETHYLENE GLYCOL IN WATER, TOGETHER WITH A SUFFICIENT AMOUNT OF A WATER SOLUBLE CHRO-

MATE SLATE TO PROVIDE FROM 0.05 TO 0.15 PERCENT CRO4=ION TO INHIBIT CORROSION OF ALUMINUM AND MAGNESIUM METALS.

公开(公告)号：US3554728A

公开(公告)日：1971-01-12

申请号：US3554728D

申请日：1968-08-05

Applicant: ALLIED CHEM

Inventor： MOORE WILLIAM PERCY ,  SANSING JAMES EARL ,  NOVOTNY JOSEPH

IPC: C05B13/06 ,  C05B7/00

CPC classification number: C05B13/06

Abstract: WET PROCESS PHOSPHORIC ACID IS REMOVED FROM AN ACIDIC SLUDGE WHICH SETTLES FROM THE CRUDE ACID AND IS CONCENTRATED TO SUPERPHOSPHORIC ACID. THE SUPERPHOSPHORIC ACID IS THEN MIXED WITH AQUEOUS AMMONIA AT A TEMPERATURE GREATER THAN 70*C. WHEREUPON THE MIXTURE IS THEN HELD AT 45-65*C. UNTIL AT LEAST 5% SOLIDS PRECIPITATE. THE PRECIPITATED SOLIDS ARE NEUTRALIZED TO PH 5-6 WITH THE ACIDIC SLUDGE TO PROVIDE NON-HYGROSCOPIC AMMONIUM PHOSPHATE. THE FILTRATE PROVIDES AN AMMONIUM POLYPHOSPHATE FERTILIZER SOLUTION WHICH DOES NOT PRECIPITATE MAGNESIUM-CONTAINING SOLIDS.