US4386024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulate of alkali metal aluminum silicate and pentasodium tripolyphosphate, and process for making it
Assignee: Hoechst AG
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Filing: 1982-03-15
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Granted: 1983-05-31
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Expires: 2002-03-15
Abstract
Abstract The disclosure relates to a granulate with a particle size essentially of about 0.2 to 2 mm consisting of (a) about 2 to 95 weight % of a partially or completely hydrated pentasodium tripolyphosphate, (b) less than 3 weight % of an ammonium polyphosphate and the balance (c) being in the form of a water-insoluble aluminum silicate ion exchanging material. The granulate can be used in detergents.
Inventors
- 👤 Alexander Maurer
- 👤 Renate Adrian
- 👤 Horst-Dieter Wasel-Nielen
- 👤 Gunter Sorbe
- 👤 Joachim Kandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D3/12; C11D3/124; C11D3/1246; C11D3/128
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
A granulate with a particle size essentially of about 0.2 to 2 mm, comprising: (a) about 2 to 95 weight % of a partially or completely hydrated pentasodium tripolyphosphate, (b) about 0.03 to 3 weight % of an ammonium polyphosphate of the general formula (I) H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 (I) in which n stands for an integral average value of 100 to 1000, m stands for a whole number of up to n+2 and m/n stands for a value of about 1, the balance (c) being in the form of a water-insoluble aluminum silicate ion exchanging material of the general formula (II) (cat.sub.2/n O).sub.x.Me.sub.2 O.sub.3.(SiO.sub.2).sub.y.zH.sub.2 O (II) in which cat is a calcium-exchangeable cation with the valency n, x is a number of 0.7 to 1.5, Me stands for boron or aluminum, y is a number of 0.8 to 6 and z is a number of 1.8 to 13.5.
Claim 2
Dependent Claim
149 words
A granulate with a particle size essentially of about 0.2 to 2 mm, comprising: (a) about 2 to 95 weight % of a partially or completely hydrated pentasodium tripolyphosphate, (b) about 0.03 to 3 weight % of an ammonium polyphosphate of the general formula (I) H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 (I) in which n stands for an integral average value of 100 to 1000, m stands for a whole number of up to n+2 and m/n stands for a value of about 1, the balance (c) being in the form of a water-insoluble aluminum silicate ion exchanging material of the general formula (II) (cat.sub.2/n O).sub.x.Me.sub.2 O.sub.3.(SiO.sub.2).sub.y.zH.sub.2 O (II) in which cat is a calcium-exchangeable cation with the valency n, x is a number of 0.7 to 1.5, Me stands for boron or aluminum, y is a number of 0.8 to 6 and z is a number of 1.8 to 13.5.
Claim 3
Dependent Claim
24 words
A granulate as claimed in claim 1, containing the partially or completely hydrated pentasodium tripolyphosphate in a proportion of 30 to 70 weight %.
Claim 4
Dependent Claim
20 words
A granulate as claimed in claim 1, containing the ammonium polyphosphate in a proportion of 0.03 to 1.6 weight %.
Claim 5
Dependent Claim
41 words
A granulate as claimed in claim 1, wherein at least 10 weight % of the pentasodium tripolyphosphate is hexahydrate and at least 30 weight % of the aluminum silicate is hydrate containing at most 13.5 mols water per mol aluminum silicate.
Claim 6
Dependent Claim
137 words
A process for making a granulate as claimed in claim 1, which comprises: spraying, with vigorous agitation, a fine mist of an aqueous 0.5 to 20 weight % solution of an ammonium polyphosphate of general formula (I) on to an intimate pulverulent blend of about 1 to 99 weight % of sodium tripolyphosphate being anhydrous or containing at most 5 weight % of water, and about 99 to 1 weight % of a pulverulent alumosilicate ion exchanging material being anhydrous or having chemically combined water contained in it and corresponding to the following general formula (cat 2/n O) x .Me 2 O 3 .(SiO 2 ) y , in which cat, Me, x and y have the meanings given, and granulating the blend with partial or complete hydration of the pentasodium tripolyphosphate and alumosilicate ion exchanging material.
Claim 7
Dependent Claim
29 words
The process as claimed in claim 5, wherein the pulverulent blend consists of 30 to 70 weight % of sodium tripolyphosphate and 70 to 30 weight % of alumosilicate.
Claim 8
Dependent Claim
32 words
The process as claimed in claim 5, wherein the alumosilicate ion exchanging material comprises zeolites of the formula Na 2 O.Al 2 O 3 .(SiO 2 ) 2 .4.5 H 2 O.
Claim 9
Dependent Claim
59 words
The process as claimed in claim 5, wherein the quantity of water necessary to effect the granulation is selected so as to obtain a final granulate containing at least 10 weight % of the pentasodium tripolyphosphate as hexahydrate and at least 30 weight % of alumosilicate as hydrate having at most 13.5 mols water per mol alumosilicate contained therein.
Claim 10
Dependent Claim
25 words
The process as claimed in claim 5, wherein an aqueous 1 to 10 weight % solution of ammonium polyphosphate is sprayed on to the blend.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |