US3971726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for lowering the bulk density of alkali making built synthetic detergent compositions
Assignee: Colgate Palmolive Co
•
Filing: 1974-04-22
•
Granted: 1976-07-27
•
Expires: 1994-04-22
Abstract
Abstract Spray dried beads, having a low bulk density and high in alkali metal carbonate content and useful for post-treatment with additional amounts of nonionic detergent to produce a heavy duty detergent compositon of a bulk density in the range of 0.2 to 0.35 gram per milliliter, are made by admixing a small percentage of alkali metal soap of higher fatty acid with a 40-75% solids content aqueous crutcher mix comprising the alkali metal carbonate and up to about 2% by weight nonionic detergent heating the crutcher mix to 170°-190° F. and spray drying the mixture.
Inventors
- 👤 Frank R. Smith, Jr.
- 👤 Edward J. Kenney
- 👤 Walter A. DiSalvo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:24
CPC Classifications
C; C11; C11D; C11D11/00; C11D11/02; C11D3/00; C11D3/02; C11D3/04; C11D3/10; C11D3/16; C11D3/20; C11D3/2075; C11D3/2079; C11D9/00; C11D9/04; C11D9/06; C11D9/08; C11D9/10; C11D9/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
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.
Claim 2
Independent Claim
121 words
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.
Claim 3
Dependent Claim
69 words
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°-190°F before spraying.
Claim 4
Dependent Claim
86 words
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%.
Claim 5
Dependent Claim
86 words
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° to 185°F.
Claim 6
Dependent Claim
22 words
A method according to claim 4 wherein the crutcher mix also contains from 0.5 to 2% of a polyethoxylated nonionic organic detergent.
Claim 7
Dependent Claim
24 words
A method according to claim 4 wherein the crutcher mix also contains from 2 to 20% of water soluble anionic synthetic organic detergent salt.
Claim 8
Dependent Claim
43 words
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.
Claim 9
Dependent Claim
56 words
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.
Claim 10
Dependent Claim
61 words
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.
Claim 11
Dependent Claim
14 words
An alkali metal carbonate bead produced by the process as defined in claim 1.
Claim 12
Dependent Claim
23 words
A detergent composition containing a minor amount of nonionic detergent derived from the beads produced in accordance with the method of claim 2.
References Cited (Backward Citations)
US2947701A
Cited
US2925390A
Cited
US3216946A
Cited
US3242091A
Cited
US3519570A
Cited
US3590001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |