US4762636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of granules containing an active substance and to the use thereof as speckles for treating substrates
Assignee: BASF Corp
•
Filing: 1987-02-20
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Granted: 1988-08-09
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Expires: 2007-02-20
Abstract
Abstract A process for the preparation of floating granules ("speckles") by spray drying a solution that contains one or more active substances, a carrier material and a foaming agent, and subsequently compacting the dried material so obtained.
Inventors
- 👤 Paolo Balliello
- 👤 Beat Bruttel
- 👤 Hanspeter Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:00
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C11; C11D; C11D3/00; C11D3/0005; C11D3/0063; C11D11/00; C11D11/02; C11D3/39; C11D3/3902; C11D3/395; C11D3/40; C11D3/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/07
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
163 words
A process for preparing wettable granules that float on and dissolve in water, said granules containing at least one active substance, which process comprises: (1) spray drying an aqueous solution that contains: (a) at least one active substance selected from the following bleaching agents, dyes, fluorescent brightening agents and finely particulate pigments; (b) at least one carrier selected from the group consisting of condensates of naphthalenesulfonic acids with formaldehyde or cresols, alkylsulfonic acids, alkylanilisulfonic acids and anilsulfonic acids; and (c) at least one foaming agent; and (2) subsequently granulating the product of step (1) by spraying it with an aqueous solution that contains: (a) at least one of the active substances of step (1), and (b) at least one carrier material of step (1); the amounts of all ingredients being chosen to provide an effective amount of the active substance for subsequent use of the granules and of the carrier and foaming agent to provide floatability and solubility of the granules in water.
Claim 2
Dependent Claim
163 words
A process for preparing wettable granules that float on and dissolve in water, said granules containing at least one active substance, which process comprises: (1) spray drying an aqueous solution that contains: (a) at least one active substance selected from the following bleaching agents, dyes, fluorescent brightening agents and finely particulate pigments; (b) at least one carrier selected from the group consisting of condensates of naphthalenesulfonic acids with formaldehyde or cresols, alkylsulfonic acids, alkylanilisulfonic acids and anilsulfonic acids; and (c) at least one foaming agent; and (2) subsequently granulating the product of step (1) by spraying it with an aqueous solution that contains: (a) at least one of the active substances of step (1), and (b) at least one carrier material of step (1); the amounts of all ingredients being chosen to provide an effective amount of the active substance for subsequent use of the granules and of the carrier and foaming agent to provide floatability and solubility of the granules in water.
Claim 3
Dependent Claim
14 words
A process according to claim 1, wherein the active substance is a bleaching agent.
Claim 4
Dependent Claim
22 words
A process according to claim 2, wherein the bleaching agent is a bleach activator, a photoactivator, a chlorite or a chlorine donor.
Claim 5
Dependent Claim
18 words
A process according to claim 1, wherein the active substance is a dye or a fluorescent whitening agent.
Claim 6
Dependent Claim
13 words
A process according to claim 4, wherein the dye is a direct dye.
Claim 7
Dependent Claim
16 words
A process according to claim 4, wherein the active substance is a very finely particulate pigment.
Claim 8
Dependent Claim
16 words
A process according to claim 3, wherein the chlorine donor is a diisocyanurate or a triisocyanurate.
Claim 9
Dependent Claim
29 words
A process according to claim 3, wherein the bleach activator is selected from the group consisting of N,N,N'N'-tetraacetylethylenediamine, N-acetylimidazole, N-benzoylimidazole, N,N,N',N'-tetraacetylglycoluride, pentacetyl glycol, alkoxybenzenesulfonates, in particular, nonyloxybenzenesulfonate and chloroalkoxybenzenesulfonates.
Claim 10
Dependent Claim
63 words
A process according to claim 3, wherein the active substance is a photoactivator of formula ##STR2## wherein MePc is the zinc phthalocyanine or aluminium phthalocyanine ring system, Y is hydrogen, an alkali metal or ammonium, v is any number from 1 to 4, R is fluorine, chlorine, bromine or iodine, with chlorine being preferred, and x is any number from 0 to 8.
Claim 11
Dependent Claim
17 words
A process according to claim 1, wherein the carrier is a condensate of naphthalenesulfonic acid (sodium salt).
Claim 12
Dependent Claim
83 words
A process according to claim 1, wherein the foaming agent is selected from the group consisting of water-soluble alkylbenzenesulfonates, alkylsulfates, ethoxylated alkyl ether sulfates, paraffin sulfonates, α-olefin sulfonates, α-sulfocarboxylic acids and the salts and esters thereof, alkyl glyceryl ether sulfonates, fatty acid monoglyceride sulfates or sulfonates, alkylphenolpolyethoxy ether sulfates, 2-acyloxyalkanesulfonates, β-alkoxyalkanesulfonates, soaps, ethoxylated fatty alcohols, alkylphenols, polypropoxy glycols, polypropoxyethylenediamines, amine oxides, phosphine oxides, sulfoxides, aliphatic secondary and tertiary amines, aliphatic quaternary ammonium, phosphonium and sulfonium compounds, amphoteric surfactants, or mixtures of these compounds.
Claim 13
Dependent Claim
39 words
A process according to claim 1, wherein the solution to be spray dried contains 0.005 to 10% by weight of active substance, 1 to 99% by weight of foaming agent, and 1 to 99% by weight of carrier material.
Claim 14
Dependent Claim
39 words
A process according to claim 12, wherein the solution to be spray dried contains 0.02 to 1% by weight of active substance, 1 to 10% by weight of foaming agent, and 10 to 99% by weight of carrier material.
Claim 15
Dependent Claim
34 words
A process according to claim 1, wherein the air inlet temperature for the spray drying is in the range from 100°-450° C. and the air outlet temperature is in the range from 80°-115° C.
Claim 16
Dependent Claim
31 words
A process according to claim 1, wherein the aqueous system employed for compacting contains 0.01 to 20% by weight of active substance and 1 to 60% by weight of carrier material.
Claim 17
Dependent Claim
48 words
A process according to claim 15, wherein the compacting is carried out on a granulating device by spraying the material to be granulated at room temperature with a solution containing 0.1 to 20% by weight of active substance and 10 to 60% by weight of a carrier material.
Claim 18
Dependent Claim
30 words
A process according to claim 16, wherein the granules obtained have a residual moisture content of 5 to 20% by weight and a bulk density of 200 to 350 g/l.
Claim 19
Dependent Claim
10 words
Granules obtained by the process as claimed in claim 1.
Claim 20
Dependent Claim
21 words
A method of treating substances, which comprises contacting said substances with a composition containing the granules obtained according to claim 1.
Claim 21
Dependent Claim
15 words
A detergent composition containing 1 to 10% by weight of the granules of claim 19.
References Cited (Backward Citations)
US3451935A
Cited
US4256598A
Cited
US4256597A
Cited
US4228025A
Cited
US4417994A
Cited
US4443358A
Cited
EP0119746A1
Cited
US4680131A
Cited
US4652391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |