US3639287A - Manufacture of spray-dried detergents containing sodium tripolyphosphate - Google Patents

Manufacture of spray-dried detergents containing sodium tripolyphosphate Download PDF

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Publication number
US3639287A
US3639287A US660928A US3639287DA US3639287A US 3639287 A US3639287 A US 3639287A US 660928 A US660928 A US 660928A US 3639287D A US3639287D A US 3639287DA US 3639287 A US3639287 A US 3639287A
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US
United States
Prior art keywords
sodium tripolyphosphate
spray
percent
sodium
grams
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 - Lifetime
Application number
US660928A
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English (en)
Inventor
Hellmut Gabler
Heinz Harnisch
Gero Heymer
Karl Merkenich
Wolf-Dieter Pirig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knapsack AG
Original Assignee
Knapsack AG
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 by Knapsack AG filed Critical Knapsack AG
Application granted granted Critical
Publication of US3639287A publication Critical patent/US3639287A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a process for the manufacture of detergents containing sodium tripolyphosphate, by spray-drying a spray slurry including the detergent components.
  • Sodium tripolyphosphate is known to increase the viscosity of detergent slurries. This is the result of the hydration sodium tripolyphosphate undergoes to form the hexahydrate. 1n the production of detergents, attempts are being made with the object of transforming quantitatively the sodium tripolyphosphate into hexahydrate, so as to enable the slurry, which is sprayed while hot, to produce a final product of good flow properties and stability to storage.
  • phase-ll sodium tripolyphosphate When phase-ll sodium tripolyphosphate is used, the hydration is found to proceed very reluctantly and to be accompanied by a low viscosity increase. This means rather long stirring periods for quantitative hydration of the tripolyphosphate.
  • Sodium tripolyphosphate containing phasel undergoes hydration more rapidly than phase-ll and therefore forms the hexahydrate substantially more rapidly, which means shorter stirring periods for the slurry.
  • the use of sodium tripolyphosphates containing phase-l is accompanied by a considerable viscosity increase of the slurry, which is the more rapid the higher the phase-l content of the tripolyphosphate.
  • the sodium tripolyphosphates customarily used have a phase-l content between 15 and 45 percent.
  • the disadvantage associated with this process resides in the fact that the Na,P O has to be used at least partially in the form of material adjusted to have a definite water content of 22.7 percent by weight, corresponding to that of the hexahydrate. Needless to say the production of sodium tripolyphosphate adjusted to have exactly that water content calls for the use of special steps and very specific conditions.
  • sodium tripolyphosphate formed at least partially of material with a crystal water content between a maximum or less than 22.7 percent by weight and a minimum of 17.0 percent by weight, can be used for making detergents slurries with constant, low viscosity, in which the sodium tripolyphosphate practically does not hydrolyze, even after prolonged standing.
  • the present invention enables the use of sodium tripolyphosphate with a water content variable within a range of about 5.7 percent, which can be produced considerably more readily.
  • the sodium tripolyphosphate having a water content such as proposed in accordance with the present invention should be used in a proportion of at least 5 percent by weight, preferably 50 to 100 percent by weight, referred to the total quantity of sodium tripolyphosphate.
  • the detergent slurry may contain further condensed and, if desired, anhydrous phosphates, such as sodium pyrophosphate or sodium metaphosphate.
  • the detergent slurry which should conveniently contain a total of to 50 percent by weight sodium tripolyphosphate, can be prepared at temperatures between 20 and 90 C., preferably between 40 and 60 C.

Landscapes

  • Chemical & Material Sciences (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)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Coloring (AREA)
US660928A 1966-09-01 1967-08-16 Manufacture of spray-dried detergents containing sodium tripolyphosphate Expired - Lifetime US3639287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK60149A DE1289603B (de) 1966-09-01 1966-09-01 Verfahren zur Herstellung von natriumtripolyphosphathaltigen Waschmitteln

Publications (1)

Publication Number Publication Date
US3639287A true US3639287A (en) 1972-02-01

Family

ID=7229470

Family Applications (1)

Application Number Title Priority Date Filing Date
US660928A Expired - Lifetime US3639287A (en) 1966-09-01 1967-08-16 Manufacture of spray-dried detergents containing sodium tripolyphosphate

Country Status (10)

Country Link
US (1) US3639287A (sk)
BE (1) BE703348A (sk)
CH (1) CH477550A (sk)
CY (1) CY502A (sk)
DE (1) DE1289603B (sk)
ES (1) ES344642A1 (sk)
GB (1) GB1144698A (sk)
NL (1) NL6711297A (sk)
NO (1) NO127452B (sk)
SE (1) SE343325B (sk)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709837A (en) * 1970-12-30 1973-01-09 Philadelphia Quartz Co Spray dried detergents containing sodium-potassium double silicate
US4116852A (en) * 1975-02-14 1978-09-26 The Procter & Gamble Company Builders and built detergent compositions
US4276326A (en) * 1976-02-26 1981-06-30 Colgate-Palmolive Company Free flowing builder beads and detergents
US4330424A (en) * 1978-12-28 1982-05-18 Colgate Palmolive Company Free flowing builder beads and detergents
US4414129A (en) * 1976-02-26 1983-11-08 Colgate Palmolive Company Free-flowing builder beads and detergents
US4537708A (en) * 1983-08-30 1985-08-27 Fmc Corporation Homogeneous laundry detergent slurries containing nonionic surface-active agents
US4734214A (en) * 1984-06-08 1988-03-29 Rhone-Poulenc Chimie De Base Process for the preparation of high absorptive sodium tripolyphosphate hexahydrate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2650365A1 (de) * 1975-11-14 1977-05-26 Procter & Gamble Verfahren zur herstellung heiss getrockneter granulate auf basis natriumtripolyphosphat und verwendung dieser granulate in wasch- und reinigungsmitteln

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB988058A (en) * 1961-03-07 1965-04-07 Knapsack Ag Method of producing detergent compositions
US3334049A (en) * 1965-04-19 1967-08-01 Monsanto Co Detergent processes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB988058A (en) * 1961-03-07 1965-04-07 Knapsack Ag Method of producing detergent compositions
US3334049A (en) * 1965-04-19 1967-08-01 Monsanto Co Detergent processes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709837A (en) * 1970-12-30 1973-01-09 Philadelphia Quartz Co Spray dried detergents containing sodium-potassium double silicate
US4116852A (en) * 1975-02-14 1978-09-26 The Procter & Gamble Company Builders and built detergent compositions
US4276326A (en) * 1976-02-26 1981-06-30 Colgate-Palmolive Company Free flowing builder beads and detergents
US4414129A (en) * 1976-02-26 1983-11-08 Colgate Palmolive Company Free-flowing builder beads and detergents
US4330424A (en) * 1978-12-28 1982-05-18 Colgate Palmolive Company Free flowing builder beads and detergents
US4537708A (en) * 1983-08-30 1985-08-27 Fmc Corporation Homogeneous laundry detergent slurries containing nonionic surface-active agents
US4734214A (en) * 1984-06-08 1988-03-29 Rhone-Poulenc Chimie De Base Process for the preparation of high absorptive sodium tripolyphosphate hexahydrate

Also Published As

Publication number Publication date
SE343325B (sk) 1972-03-06
ES344642A1 (es) 1968-10-16
GB1144698A (en) 1969-03-05
NL6711297A (sk) 1968-03-04
CY502A (en) 1969-08-22
CH477550A (de) 1969-08-31
BE703348A (sk) 1968-01-15
NO127452B (sk) 1973-06-25
DE1289603B (de) 1969-02-20

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