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US3929679A
Expired / Lapsed
US
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Particulate silicate-hydroxyalkyl iminodiacetate built detergent compositions of improved properties
Assignee: Colgate Palmolive Co
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Filing: 1973-10-26
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Granted: 1975-12-30
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Expires: 1993-10-26
Abstract
Abstract A particulate heavy duty synthetic organic detergent which has improved aging properties includes a synthetic organic detergent of the anionic or nonionic type or a mixture thereof and a builder which is a hydroxyalkyl iminodicarboxylate hydrate. In preferred compositions the iminodicarboxylate hydrate is disodium 2-hydroxyethyl iminodiacetate hexahydrate, the detergent is a mixture of linear higher alkyl benzene sulfonate and higher fatty alcohol polyethoxylate and the detergent composition includes sodium silicate, sodium carbonate, sodium carboxymethyl cellulose, sodium sulfate and moisture. The described products are of better storage and aging properties than products of similar formulas in which the iminodicarboxylate is present but not as a hydrate. Also within the invention are methods for the manufacture of the described compositions in which all the formula except the iminodicarboxylate hydrate is spray dried from an aqueous crutcher mix to globular particles which are then mixed with iminodicarboxylate hydrate particles of similar sizes.
Inventors
- 👤 Francis R Cala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:29
CPC Classifications
C; C11; C11D; C11D11/00; C11D11/0082; C11D3/00; C11D3/16; C11D3/26; C11D3/33
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
60 words
A PARTICULATE HEAVY DUTY SYNTHETIC ORGANIC DETERGENT COMPOSITION WHICH COMPRISES 5 TO 30 PARTS OF ANIONIC DETERGENT AND/OR 1 TO 10 PARTS OF NINIONIC DETERGENT AND, AS A BUILDER THEREFOR, 15 TO 50 PARTS OF A WATER-SOLUBLE SALT OF A HYDROXY C2-C4 ALKYL IMINODI C2-C4 CARBOXYLIC ACID HYDRATED BY 3 TO 10 MOLES OF WATER PER MOLE OF OF IMINODICARBOXYLATE.
Claim 2
Dependent Claim
60 words
A PARTICULATE HEAVY DUTY SYNTHETIC ORGANIC DETERGENT COMPOSITION WHICH COMPRISES 5 TO 30 PARTS OF ANIONIC DETERGENT AND/OR 1 TO 10 PARTS OF NINIONIC DETERGENT AND, AS A BUILDER THEREFOR, 15 TO 50 PARTS OF A WATER-SOLUBLE SALT OF A HYDROXY C2-C4 ALKYL IMINODI C2-C4 CARBOXYLIC ACID HYDRATED BY 3 TO 10 MOLES OF WATER PER MOLE OF OF IMINODICARBOXYLATE.
Claim 3
Dependent Claim
19 words
A heavy duty detergent composition according to claim 1 wherein the builder salt is a dialkali metal iminodiacetate polyhydrate.
Claim 4
Dependent Claim
16 words
A detergent composition according to claim 2 wherein the iminodiacetate polyhydrate is disodium 2-hydroxyethyl iminodiacetate hexahydrate.
Claim 5
Dependent Claim
22 words
A detergent composition according to claim 3 wherein the particles of synthetic organic detergent are in the form of spray dried beads.
Claim 6
Dependent Claim
73 words
A detergent composition according to claim 1 which comprises from 5 to 30 parts of anionic detergent and/or 1 to 10 parts of nonionic detergent, 5 to 30 parts of alkali metal silicate, 4 to 20 parts of alkali metal carbonate, 0.3 to 3 parts of organic gum anti-redeposition agent, 1 to 20 parts of moisture, 5 to 40 parts of alkali metal sulfate and 15 to 50 parts of builder salt hydrate.
Claim 7
Dependent Claim
76 words
A detergent composition according to claim 4 which comprises from 5 to 30 parts of anionic detergent, 1 to 8 parts of nonionic detergent, 5 to 30 parts of alkali metal silicate, 4 to 20 parts of alkali metal carbonate, 0.3 to 3 parts or organic gum anti-redeposition agent, 1 to 20 parts of moisture, 5 to 40 parts of alkali metal sulfate in the beads and 15 to 50 parts of disodium 2-hydroxyethyl iminodiacetate hexahydrate.
Claim 8
Dependent Claim
106 words
A phosphate-free and NTA-free detergent composition according to claim 6 which comprises from 5 to 30 parts of sodium linear alkyl benzene sulfonate, 1 to 8 parts of higher fatty alcohol poly-lower alkoxylate detergent, 5 to 15 parts of sodium silicate of an Na2O:SiO2 ratio in the range of 1:2.0 to 1:2.4, 4 to 20 parts of sodium carbonate, 0.3 to 3 parts of sodium carboxymethyl cellulose, 1 to 15 parts of moisture and 5 to 40 parts of sodium sulfate in the beads and 15 to 30 parts of disodium 2-hydroxyethyl iminodiacetate hexahydrate, with the particles being within the range of 6 to 100 mesh.
Claim 9
Independent Claim
93 words
A method of making a free flowing, particulate heavy duty synthetic organic detergent composition which comprises 5 to 30 parts of anionic detergent and/or 1-10 parts of nonionic detergent and, as a builder therefor, 15 to 50 parts of a water-soluble salt of a hydroxy C2-C4 alkyl iminodi C2 -C4 carboxylic acid hydrated by 3 to 10 moles of water per mole of iminodicarboxylate, which comprises making particles of the heavy duty synthetic organic detergent composition components exclusive of the said builder salt and admixing with them particles of said builder salt hydrate.
Claim 10
Independent Claim
93 words
A method of making a free flowing, particulate heavy duty synthetic organic detergent composition which comprises 5 to 30 parts of anionic detergent and/or 1-10 parts of nonionic detergent and, as a builder therefor, 15 to 50 parts of a water-soluble salt of a hydroxy C2-C4 alkyl iminodi C2 -C4 carboxylic acid hydrated by 3 to 10 moles of water per mole of iminodicarboxylate, which comprises making particles of the heavy duty synthetic organic detergent composition components exclusive of the said builder salt and admixing with them particles of said builder salt hydrate.
Claim 11
Dependent Claim
16 words
A method according to claim 8 wherein the builder salt is a di-alkali metal iminodiacetate polyhydrate.
Claim 12
Dependent Claim
14 words
A method according to claim 9 wherein the builder salt is 2-hydroxyethyl iminodiacetate hexahydrate.
Claim 13
Dependent Claim
30 words
A method according to claim 10 wherein the organic detergent is spray dried and after spray drying the particles of 2-hydroxyethyl iminodiacetate hexahydrate are post-added and mixed with such particles.
Claim 14
Dependent Claim
96 words
A method according to claim 11 wherein the spray dried particles of the detergent comprise from 5 to 30 parts of anioniC detergent and/or 1 to 10 parts of nonionic detergent, 5 to 30 parts of alkali metal silicate, 4 to 20 parts of alkali metal carbonate, 0.3 to 3 parts of organic gum anti-redeposition agent, 1 to 10 parts of moisture and 5 to 40 parts of alkali metal sulfate and/or alkali metal chloride, to which are post-added particles of about the same size of 2-hydroxyethyl iminodiacetate hexahydrate, after which addition the particles are mixed.
Claim 15
Dependent Claim
129 words
A method according to claim 12 wherein an aqueous detergent composition crutcher mix is spray dried to detergent beads of particle sizes in the 6 to 100 mesh range, which beads comprise from 5 to 30 parts sodium linear higher alkyl benzene sulfonate, 1 to 8 parts of higher fatty alcohol poly-lower alkoxylated detergent, 5 to 15 parts of sodium silicate of an Na2O:SiO2 ratio in the range of 1:2.0 to 1:2.4, 4 to 20 parts of sodium carbonate, 0.3 to 1 part of sodium carboxymethyl cellulose, 1 to 10 parts of moisture and 5 to 40 parts of sodium sulfate and such spray dried beads resulting are admixed with 15 to 30 parts of disodium 2-hydroxyethyl iminodiacetate hexahydrate of particle sizes in the 6 to 100 mesh range.
Claim 16
Dependent Claim
117 words
A method according to claim 13 in which additional nonionic detergent, sodium silicate and sodium carboxymethyl cellulose are post-added to the spray dried product, the silicate as an aqueous solution and thereafter nonionic detergent being sprayed onto the product surfaces in liquid droplet form and the sodium carboxymethyl cellulose being admixed therewith as a finely divided powder, with particles in the range of 100 to 200 mesh, during tumbling of the beads, the proportions of silicate, detergent and sodium carboxymethyl cellulose added being such that the total proportions thereof in the product are 1 to 8 parts of higher alcohol poly-lower alkoxylate, 5 to 30 parts sodium silicate and 0.3 to 3 parts of sodium carboxymethyl cellulose.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |