GB1295658A - - Google Patents

Info

Publication number
GB1295658A
GB1295658A GB1295658DA GB1295658A GB 1295658 A GB1295658 A GB 1295658A GB 1295658D A GB1295658D A GB 1295658DA GB 1295658 A GB1295658 A GB 1295658A
Authority
GB
United Kingdom
Prior art keywords
stpp
steam
pipe
carrier gas
ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1295658A publication Critical patent/GB1295658A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates
    • C11D3/062—Special methods concerning phosphates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/41—Polyphosphates of alkali metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/41—Polyphosphates of alkali metals
    • C01B25/418—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Detergent Compositions (AREA)

Abstract

1295658 Hydration of sodium tripolyphosphate UNILEVER Ltd 19 Dec 1969 [24 Dec 1968] 61954/69 Heading C1A [Also in Divisions B8 and C5] Sodium tripolyphosphate (STPP) is hydrated at least partially by contacting the STPP with superheated steam at at least one point during its conveyance through a pipe by means of a carrier gas (i.e. pneumatic conveyance) and removing the hydrated STPP from the pipe. The weight ratio of STPP to carrier gas is advantageously in the range 10 : 1 to 2 : 1 and the weight ratio of steam to carrier gas 1 : 25 to 3 : 10 producing STPP of up to 15% moisture content, corresponding to 65% hexahydrate content. The steam nozzles may supply steam at a rate such that the ratio steam: STPP at each contact point does not exceed 5 : 100 and the ratio steam : STPP along the line is 0À5 : 100 to 5 : 100. The steam may be superheated to 200‹C. for a saturation temperature of 105-150‹C. The flow rate of STPP at the steam contact points is advantageously in the range of 20 to 30 metres/sec. The process is suitable for STPP having a high or a low phase I content. An apparatus comprising a pipe 1 for conveying the STPP and having spaced at intervals inlets 10a, 10b, 10c, 10d, containing steam injection nozzles 12 is provided (see Division B8). The STPP may be used for detergent compositions (see Division C5).
GB1295658D 1968-12-24 1969-12-19 Expired GB1295658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681816839 DE1816839B2 (en) 1968-12-24 1968-12-24 PARTIALLY HYDRATED ALKALITRIPOLYPHOSPHATE SUITABLE FOR THE MANUFACTURING OF DETERGENTS AND PROCESS FOR ITS MANUFACTURING

Publications (1)

Publication Number Publication Date
GB1295658A true GB1295658A (en) 1972-11-08

Family

ID=5717297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295658D Expired GB1295658A (en) 1968-12-24 1969-12-19

Country Status (15)

Country Link
US (1) US3672826A (en)
JP (1) JPS5130037B1 (en)
AT (1) AT300729B (en)
BE (1) BE743638A (en)
CA (1) CA931323A (en)
CH (1) CH544724A (en)
DE (1) DE1816839B2 (en)
DK (1) DK132529C (en)
ES (1) ES374799A1 (en)
FR (1) FR2030955A5 (en)
GB (1) GB1295658A (en)
NL (1) NL156373B (en)
NO (1) NO129141B (en)
SE (1) SE358619B (en)
ZA (1) ZA698848B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954939A (en) * 1974-05-21 1976-05-04 Stauffer Chemical Company Method for preparing monocalcium phosphate compositions with reduced caking tendencies
US4251498A (en) * 1979-01-02 1981-02-17 Fmc Corporation Preparation of granular sodium tripolyphosphate products from screen undersize sodium tripolyphosphate particles
US4315898A (en) * 1980-06-30 1982-02-16 Fmc Corportion Preparation of granular sodium tripolyphosphate hexahydrate with low friability
FR2565574B1 (en) * 1984-06-08 1988-04-22 Rhone Poulenc Chim Base PROCESS FOR THE PREPARATION OF A HIGH ABSORBENT SODIUM HEXAHYDRATE SODIUM TRIPOLYPHOSPHATE AND TRIPOLYPHOSPHATE THUS PREPARED
US5232620A (en) * 1991-02-28 1993-08-03 Fmc Corporation Sodium tripolyphosphate composition and method of producing it
WO1999033945A1 (en) * 1997-12-29 1999-07-08 The Procter & Gamble Company A process for making a phosphate material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054637B (en) * 1956-01-14 1959-04-09 Procter & Gamble Process for the manufacture of detergents
US3394986A (en) * 1965-04-19 1968-07-30 Monsanto Co Production of finely divided sodium tripolyphosphate
ZA663029B (en) * 1965-06-25
FR1537276A (en) * 1966-09-01 1968-08-23 Knapsack Ag Process for preparing detergents containing sodium tripolyphosphate

Also Published As

Publication number Publication date
SE358619B (en) 1973-08-06
AT300729B (en) 1972-08-10
JPS5130037B1 (en) 1976-08-28
DE1816839B2 (en) 1977-04-14
DK132529C (en) 1976-05-24
CA931323A (en) 1973-08-07
DK132529B (en) 1975-12-22
ES374799A1 (en) 1972-04-16
FR2030955A5 (en) 1970-11-13
NL6919163A (en) 1970-06-26
NO129141B (en) 1974-03-04
DE1816839A1 (en) 1970-11-12
CH544724A (en) 1973-11-30
NL156373B (en) 1978-04-17
ZA698848B (en) 1971-08-25
BE743638A (en) 1970-06-23
US3672826A (en) 1972-06-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee