US3886098A — Manufacture of free flowing particulate detergent…

Claim 1

Independent Claim 175 words

A METHOD OF PRODUCING A PARTICULATE DETERGENT COMPOSITION WHICH COMPRISES MAKING INORGANIC SALT-CONTAINING BASE PARTICLES COMPRISING, ON A DETERGENT COMPOSTION WEIGHT BASIS, AT LEAST 5 PERCENT OF SODIUM CARBONATE,SODIUM BICARBONATE OR SODIUM SESQUICARBONATE, AT LEAST 5 PERCENT AND LESS THAN 30 PERCENT OF SODIUM SILICATE, HAVING NA2O:SIO2 RATIO OF 1:1.6 TO 1:3.4, LESS THAN 15 PERCENT OF SOLUBLE HIGHER ALKYL BENZENE SULFONATE DETERGENT, LESS THAN 4 PERCENT OF NONIONIC DETERGENT AND LESS THAN 0.5 PERCENT OF SODIUM CARBOXYMETHYL CELLULOSE, WITH THE COMPONENTS OF THE BASE PARTICLES BEING SUCH THAT THE SUBSEQUENTLY MENTIONED NONIONIC DETERGENT IS READILY SORBED THEREBY, AND DISTRIBUTING OVER THE SURFACES OF THE PARTICLES, WHILE THEY ARE IN MOTION, FROM 2 TO 20 PERCENT BY WEIGHT OF THE DETERGENT COMPOSITION OF A HIGHER ALKOXY POLY-LOWER ALKOXY LOWER ALKANOL CONTAINING NONIONIC DETERGENT WHEREIN SAID HGHER ALKOXY CONTAINS FROM 10 TO 18 CARBON ATOMS, SAID LOWER ALKOXY AND LOWER ALKANOL CONTAINS FROM 2 TO 3 CARBON ATOMS THE TOTAL NUMBER OF CARBON ATOMS IN SAID POLY LOWER ALKOXY LOWER ALKANOL BEING FROM 20 TO 30.

Claim 2

Independent Claim 175 words

A METHOD OF PRODUCING A PARTICULATE DETERGENT COMPOSITION WHICH COMPRISES MAKING INORGANIC SALT-CONTAINING BASE PARTICLES COMPRISING, ON A DETERGENT COMPOSTION WEIGHT BASIS, AT LEAST 5 PERCENT OF SODIUM CARBONATE,SODIUM BICARBONATE OR SODIUM SESQUICARBONATE, AT LEAST 5 PERCENT AND LESS THAN 30 PERCENT OF SODIUM SILICATE, HAVING NA2O:SIO2 RATIO OF 1:1.6 TO 1:3.4, LESS THAN 15 PERCENT OF SOLUBLE HIGHER ALKYL BENZENE SULFONATE DETERGENT, LESS THAN 4 PERCENT OF NONIONIC DETERGENT AND LESS THAN 0.5 PERCENT OF SODIUM CARBOXYMETHYL CELLULOSE, WITH THE COMPONENTS OF THE BASE PARTICLES BEING SUCH THAT THE SUBSEQUENTLY MENTIONED NONIONIC DETERGENT IS READILY SORBED THEREBY, AND DISTRIBUTING OVER THE SURFACES OF THE PARTICLES, WHILE THEY ARE IN MOTION, FROM 2 TO 20 PERCENT BY WEIGHT OF THE DETERGENT COMPOSITION OF A HIGHER ALKOXY POLY-LOWER ALKOXY LOWER ALKANOL CONTAINING NONIONIC DETERGENT WHEREIN SAID HGHER ALKOXY CONTAINS FROM 10 TO 18 CARBON ATOMS, SAID LOWER ALKOXY AND LOWER ALKANOL CONTAINS FROM 2 TO 3 CARBON ATOMS THE TOTAL NUMBER OF CARBON ATOMS IN SAID POLY LOWER ALKOXY LOWER ALKANOL BEING FROM 20 TO 30.

Claim 3

Independent Claim 170 words

A method of producing a particulate detergent composition which comprises spraying onto the surfaces of detergent particles while they are in motion, said detergent comprising on a detergent composition weight basis, at least 5 percent of sodium carbonate, sodium bicarbonate or sodium sesquicarbonate, at least 5 percent and less than 30 percent of sodium silicate, having Na2O:SiO2 ratio of 1:1.6 to 1:3.4, less than 15 percent of soluble higher alkyl benzene sulfonate detergent, less than 4 percent of nonionic detergent and less than 0.5 percent of sodium carboxymethyl cellulose, with the components of the base particles being such that the subsequently mentioned nonionic detergent is readily sorbed thereby, from 2 to 20 percent by weight of the detergent composition of higher alkoxy poly-lower alkoxy lower alkanol containing nonionic detergent, said higher alkoxy containing from 10 to 18 carbon atoms, said lower alkoxy and lower alkanol containing from 2 to 3 carbon atoms, the total number of carbon atoms in the poly lower alkoxy lower alkanol being from 2 to 30.

Claim 4

Independent Claim 170 words

A method of producing a particulate detergent composition which comprises spraying onto the surfaces of detergent particles while they are in motion, said detergent comprising on a detergent composition weight basis, at least 5 percent of sodium carbonate, sodium bicarbonate or sodium sesquicarbonate, at least 5 percent and less than 30 percent of sodium silicate, having Na2O:SiO2 ratio of 1:1.6 to 1:3.4, less than 15 percent of soluble higher alkyl benzene sulfonate detergent, less than 4 percent of nonionic detergent and less than 0.5 percent of sodium carboxymethyl cellulose, with the components of the base particles being such that the subsequently mentioned nonionic detergent is readily sorbed thereby, from 2 to 20 percent by weight of the detergent composition of higher alkoxy poly-lower alkoxy lower alkanol containing nonionic detergent, said higher alkoxy containing from 10 to 18 carbon atoms, said lower alkoxy and lower alkanol containing from 2 to 3 carbon atoms, the total number of carbon atoms in the poly lower alkoxy lower alkanol being from 2 to 30.

Claim 5

Dependent Claim 229 words

A method according to claim 1 wherein the detergent composition particles comprise from 5 to 12 percent of sodium linear higher alkyl benzene sulfonate wherein the higher alkyl is of 12 to 15 carbon atoms, 0 to 3 percent of higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent compound wherein the higher alkoxy is linear alkoxy of 10 to 18 carbon atoms and the poly-lower alkoxy lower alkanol is polyethoxy ethanol of 20 to 26 carbon atoms, 5 to 75 percent sodium carbonate, 15 to 50 percnt pentasodium tripolyphosphate, 5 to 30 percent of sodium silicate of Na2O:SiO2 ratio of from 1:2 to 1:3, of which no more than 15 percent is dissolved in the aqueous mix that is spray dried, and from 2 to 15 percent moisture, all of which materials are in the base particles, sodium silicate, pentasodium tripolyphosphate and anti-redeposition agent selected from the group consisting of carboxy methyl cellulose, hydroxypropyl methyl cellulose, polyvinyl pyrrolidone and polyvinyl alcohol are admixed with the base particles, and the higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent applied to the base particles and particles mixed with them is one in which the higher alkoxy is linear alkoxy of 10 to 18 carbon atoms and the poly-lower alkoxy lower alkanol is polyethoxy ethanol of 20 to 26 carbon atoms, and is from 2 to 15 percent of the detergent composition.

Claim 6

Dependent Claim 139 words

A method according to claim 3 wherein the detergent composition particles comprise from 5 to 10 percent of the sodium linear higher alkyl benzene sulfonate, 8 to 13 percent of the sodium silicate, 25 to 50 percent of pentasodium tripolyphosphate, 5 to 10 percent moisture, 12 to 40 percent sodium sulfate, 2 to 40 percent sodium carbonate, the proportion of such carbonate with respect to sodium sulfate being at least 1:3, all of which preceding components are in the spray dried base particles, from 5 to 10 percent of higher linear alkoxy poly-lower alkoxy lower alkanol nonionic detergent, applied to the base particles as a spray and from 0.5 to 5 percent carboxy methyl cellulose, applied as a finely divided powder to the tumbling base particles in the same tumbler in which the nonionic detergent spray is applied thereto.

Claim 7

Dependent Claim 53 words

A method according to claim 3 wherein the detergent composition particles comprise from 5 to 8 percent of sodium linear tridecyl benzene sulfonate and 5 to 8 percent of higher alkoxy polyethoxy ethanol wherein the higher alkoxy is of 14 to 15 carbon atoms and the polyethoxy ethanol is of 22 carbon atoms.

Claim 8

Dependent Claim 57 words

A method according to claim 4 wherein from 0.1 to 2 percent of a synthetic organic fluorescent brightening compound is present in the base beads, causing brightening of the surfaces of the detergent particles when contacted with the sprayed nonionic detergent, and from 0.1 to 1 percent of perfume is sprayed onto the beads in the tumbler.

Claim 9

Dependent Claim 62 words

A method according to claim 1 wherein the base particles are made by spray drying an aqueous mix comprising sodium carbonate, sodium silicate, soluble higher alkyl benzene sulfonate detergent and water and the higher alkoxy poly-lower alkoxy lower alkanol is sprayed onto the surfaces of the spray dried particles in fine liquid droplet form while the base particles are in tumbling motion.

Claim 10

Dependent Claim 91 words

A method According to claim 7 wherein the base particles to which nonionic detergent is applied are substantially hollow globules which pass through a 6 mesh U.S. Standard Sieve Series sieve and remain on a 200 mesh U.S. Standard Sieve Series sieve and are at a temperature from 10* to 65*C. when the liquid spray, of particle size from 50 to 500 microns, at a temperature of 10* to 65*C., is applied thereto, which application takes place within 30 minutes after removal of the spray dried particles from the spray dryer.

Claim 11

Dependent Claim 169 words

A method according to claim 8 wherein the detergent composition particles comprise from 5 to 12 percent of sodium linear higher alkyl benzene sulfonate wherein the higher alkyl is of 12 to 15 carbon atoms, 0 to 3 percent of higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent compound wherein the higher alkoxy is linear alkoxy of 10 to 18 carbon atoms and the poly-lower alkoxy lower alkanol is polyethoxy ethanol of 20 to 26 carbon atoms, 5 to 83 percent sodium carbonate, 5 to 25 percent sodium silicate of Na2O:SiO2 ratio of from 1:2 to 1:3 and from 2 to 15 percent moisture, all of which are in the base particles, and the higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent applied to the base particles is one in which the higher alkoxy is linear alkoxy of 10 to 18 carbon atoms and the poly-lower alkoxy lower alkanol is polyethoxy ethanol of 20 to 26 carbon atoms and comprises from 2 to 15 percent of the detergent composition.

Claim 12

Dependent Claim 145 words

A method according to claim 9 wherein there is present in the spray dried base particles, on a detergent composition basis, 15 to 40 percent sodium sulfate, with the proportion of sodium carbonate to sodium sulfate being at least 1:3, 0 percent of higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent and 0 percent sodium carboxymethyl cellulose, the higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent applied to the base particles is from 5 to 12 percent of the detergent composition, with the total of sodium linear higher alkyl benzene sulfonate and higher alkoxy poly-lower alkoxy lower alkanol nonionic detergent being from 8 to 16 percent, and from 0.5 to 5 percent of sodium carboxymethyl cellullose is added as a finely divided powder or in granular form to the tumbling base particles in the same tumbler in which the nonionic detergent spray is applied thereto.

Claim 13

Dependent Claim 112 words

A method according to claim 8 wherein from 3 to 15 percent of sodium silicate is maintained undissolved in a crutcher mix, from which the base particles are spray dried, by adding thereto, as one of the last components of the crutcher mix, a hydrous sodium silicate in particulate form of relatively large particle size, compared to the other particulate materials added to the crutcher mix, maintaining the temperature of the crutcher mix sufficiently low so as to allow the hydrous sodium silicate to remain substantially undissolved, mixing slowly after the addition of hydrous sodium silicate, and spray drying the crutcher mix within 10 minutes after addition of the hydrous sodium silicate.

Claim 14

Dependent Claim 31 words

A method according to claim 8 wherein there is spray dried in the base bead from 5 to 20 percent, on a detergent composition basis, of sodium citrate, as a builder.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-05-26	1978-11-25	1979-05-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-05-26	1982-11-25	1983-05-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-05-26	1986-11-25	1987-05-27	$7700.00	Window Closed / Lapsed

Manufacture of free flowing particulate detergent composition containing nonionic detergent

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