Claims
- 1. A method of spray drying alkali metal carbonate beads useful to be post-treated with a polyethoxylated nonionic organic detergent to produce a heavy duty detergent composition, the bulk density of said bead being in the range of about 0.2 to 0.35 gram per milliliter comprising admixing with a 40-75% solids content aqueous crutcher mix containing said alkali metal carbonate from about 0.75 to 4% of an alkali metal soap of a higher fatty acid and up to about 2% by weight nonionic detergent, heating and spray drying the resulting mixture, the carbonate content being approximately 20-75% by weight, and thereafter post-treating said mix with additional amounts of said nonionic detergent such that the final bead contains about 5-15% of said nonionic.
- 2. A method according to claim 1 wherein the alkali metal carbonate is sodium carbonate, the bulk density of the spray dried beads made is from 0.25 to 0.35 g./ml., the alkali metal soap is sodium soap of a mixture of higher fatty acids of carbon contents in the range of 12 to 18 carbon atoms per molecule and the crutcher mix is at a temperature of 170.degree.-190.degree.F before spraying.
- 3. A method according to claim 2 wherein the sodium carbonate content of the crutcher mix is such as to produce beads containing from 40 to 90% of sodium carbonate, the crutcher mix solids content is from 50 to 75% and the sodium soap is a mixture of higher fatty acids in the 12 to 18 carbon atoms range, in which those of 16 to 18 carbon atoms are from 60 to 100% and the crutcher mix is dried to a moisture content of 1 to 12%.
- 4. A method according to claim 3 wherein the sodium carbonate content of the crutcher mix is such as to produce beads containing from 50 to 90% of sodium carbonate, the sodium soap is a mixture of higher fatty acids of 12 to 18 carbon atoms in which those of 16 to 18 carbon atoms constitute from 75 to 100%, the sodium soap content of the crutcher mix is 2 to 4% and the temperature to which the crutcher mix is heated is from 175.degree. to 185.degree.F.
- 5. A method according to claim 4 wherein the crutcher mix also contains from 0.5 to 2% of a polyethoxylated nonionic organic detergent.
- 6. A method according to claim 4 wherein the crutcher mix also contains from 2 to 20% of water soluble anionic synthetic organic detergent salt.
- 7. A method according to claim 5 wherein the crutcher mix also contains water soluble anionic synthetic organic detergent salt and sodium silicate in such proportions as to result in 2 to 20%, respectively and 5 to 20% thereof in the spray dried beads.
- 8. A method according to claim 5 wherein the spray dried higher alkali metal carbonate content beads are post sprayed with a polyethoxylated nonionic organic detergent so that the content thereof in the post sprayed detergent beads is from 5 to 15% thereof and the bulk density of the product resulting is from 0.25 to 0.4 g./ml.
- 9. A method according to claim 7 wherein the spray dried beads are post-sprayed with a polyethoxylated nonionic organic detergent so that the total content thereof in the product is from 5 to 15%, the particle sizes of the product are in the 8 to 100 mesh range and the bulk density of the product resulting is from 0.25 to 0.4 g./ml.
- 10. An alkali metal carbonate bead produced by the process as defined in claim 1.
- 11. A detergent composition containing a minor amount of nonionic detergent derived from the beads produced in accordance with the method of claim 2.
Parent Case Info
This application is a continuation of application Ser. No. 298,936 filed Oct. 19, 1972, now abandoned, which is a continuation-in-part of our U.S. patent applications Ser. No. 124,111 filed on Mar. 15, 1971, now U.S. Pat. No. 3,886,098; Ser. No. 203,365 filed on Nov. 30, 1971, now abandoned; and Ser. No. 224,694 filed Feb. 9, 1972, now U.S. Pat. No. 3,849,327.
US Referenced Citations (6)
Non-Patent Literature Citations (2)
Entry |
"Synthetic Detergents" by Davidsohn et al., 1967, pp. 36, 37, & 53. |
"Eutrophication of Lake Water Microcisms: Phosphate vs. Nonphosphate Detergents" by Mitchell, Science, vol. 174, pp. 827-829, 11/19/1971. |
Continuations (1)
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Number |
Date |
Country |
Parent |
298936 |
Oct 1972 |
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Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
124111 |
Mar 1971 |
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Parent |
203365 |
Nov 1971 |
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Parent |
224694 |
Feb 1972 |
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