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Patent US3615779A successfully refreshed from Google Patents.
US3615779A
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Process for the promotion of flow of aqueous inorganic solids dispersions
Assignee: Henkel AG and Co KGaA
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Filing: 1970-04-16
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Granted: 1971-10-26
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Expires: 1990-04-16
Abstract
Abstract A process for the promotion of the flow of aqueous inorganic solids dispersions using a mixture of at least one alkalisilicate and at least one water-soluble salt of an amino-polyphosphonic acid in proportions ranging from 20:1 to 2:1.
Inventors
- 👤 Helmut Von Freyhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:30
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C04; C04B; C04B24/00; C04B24/003; C04B28/00; C04B28/02; C04B33/00; C04B33/02; C04B33/13; C04B33/18; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/3817; C09C; C09C1/00; C09C1/40; C09C1/42; C01; C01P; C01P2006/00; C01P2006/22; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
The flow promoters and viscosity depressants as defined in claim 1, wherein said alkali silicates are selected from the group consisting of water-soluble sodium and potassium silicates having weight proportions of alkali metal oxide to SiO2 ranging from 1:0.5 to 1:4.4.
Claim 2
Dependent Claim
32 words
The flow promoters and viscosity depressants as defined in claim 1, wherein in said mixture said aminopolyphosphonic acid is selected from the group consisting of aminotri-(methylenephosphonic acid), ethylenediamino-tetra-(methylenephosphonic acid) and diethylene-triamino-penta-(methylenephosphonic acid).
Claim 3
Dependent Claim
30 words
The flow promoters and viscosity depressants as defined in claim 1, wherein said mixture is a solid hydrated mixed crystallizate of said alkali silicate with said salt of aminopolyphosphonic acid.
Claim 4
Dependent Claim
18 words
The flow promoters and viscosity depressants as defined in claim 1, wherein said aminopolyphosphonic acid is aminotri-(methylenephosphonic acid).
Claim 5
Dependent Claim
19 words
The flow promoters and viscosity depressants as defined in claim 1, wherein said mixture is a concentrated aqueous solution.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |