Patent US4040972A successfully refreshed from Google Patents.
US4040972A
Expired / Lapsed
US
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Ion-exchanging aluminum silicate with hydrophilic surfaces
Assignee: Henkel AG and Co KGaA
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Filing: 1976-03-05
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Granted: 1977-08-09
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Expires: 1996-03-05
Abstract
Abstract There are provided alkali aluminum silicates having a hydrophilic surface. They are prepared by mixing a crystalline, ion-exchanging alkali aluminum silicate with a hydrophilic material, preferably ortho-phosphoric acid or an alkali ortho phosphate.
Inventors
- 👤 Wolfgang Roebke
- 👤 Dieter Kneitel
- 👤 Erfried Parr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/128; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
99 words
A process for the production of an ion-exchanging alkali metal aluminum silicate having a hydrophilic surface comprising mixing a crystalline ion exchanging alkali metal aluminum silicate with a hydrophilic material which is ortho phosphoric acid, an alkali metal ortho phosphate, pentasodium tripolyphosphate, tartaric, acid, an alkali metal tartrate or pentaerythritol in the presence of water, said hydrophilic material being employed in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate, drying and subsequently grinding the treated silicate to a particle size of not over 100 microns.
Claim 2
Dependent Claim
99 words
A process for the production of an ion-exchanging alkali metal aluminum silicate having a hydrophilic surface comprising mixing a crystalline ion exchanging alkali metal aluminum silicate with a hydrophilic material which is ortho phosphoric acid, an alkali metal ortho phosphate, pentasodium tripolyphosphate, tartaric, acid, an alkali metal tartrate or pentaerythritol in the presence of water, said hydrophilic material being employed in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate, drying and subsequently grinding the treated silicate to a particle size of not over 100 microns.
Claim 3
Dependent Claim
44 words
A process according to claim 1 wherein the hydrophilic material is an ortho phosphoric acid or an alkali metal ortho phosphate in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 4
Dependent Claim
22 words
A process according to claim 2 wherein the phosphoric acid or alkali metal ortho phosphate is employed as a solution in water.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein the hydrophilic material is ortho phosphoric acid, alkali metal ortho phosphate, or pentasodium tripolyphosphate.
Claim 6
Dependent Claim
36 words
A process according to claim 1 wherein the hydrophilic material is pentasodium tripolyphosphate in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 7
Dependent Claim
17 words
A process according to claim 5 wherein the pentasodium tripolyphosphate is employed as a solution in water.
Claim 8
Dependent Claim
41 words
A process according to claim 1 wherein the hydrophilic material is tartaric acid or a alkali metal tartrate in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 9
Dependent Claim
21 words
A process according to claim 7 wherein the tartaric acid or alkali metal tartrate is employed as a solution in water.
Claim 10
Dependent Claim
13 words
The hydrophilic alkali metal aluminum silicate prepared by the process of claim 7.
Claim 11
Dependent Claim
35 words
A process according to claim 1 wherein the hydrophilic material is pentaerythritol in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 12
Dependent Claim
16 words
A process according to claim 10 wherein the pentaerythritol is employed as a solution in water.
Claim 13
Dependent Claim
13 words
The hydrophilic alkali metal aluminum silicate prepared by the process of claim 10.
Claim 14
Dependent Claim
16 words
The process of claim 26 wherein the alkali metal aluminum silicate employed is sodium aluminum silicate.
Claim 15
Dependent Claim
20 words
The process of claim 13 wherein the silicate employed is Zeolite Type A, Zeolite Type X or Zeolite Type Y.
Claim 16
Dependent Claim
100 words
A process for the production of an ion-exchanging alkali metal aluminum silicate having a hydrophilic surface consisting of mixing a crystalline ion exchanging alkali metal aluminum silicate with a hydrophilic material which is ortho phosphoric acid, an alkali metal ortho phosphate, pentasodium tripolyphosphate, tartaric acid, an alkali metal tartrate or pentaerythritol in the presence of water, said hydrophilic material being employed in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate, drying and subsequently grinding the treated silicate to a particle size of not over 100 microns.
Claim 17
Dependent Claim
100 words
A process for the production of an ion-exchanging alkali metal aluminum silicate having a hydrophilic surface consisting of mixing a crystalline ion exchanging alkali metal aluminum silicate with a hydrophilic material which is ortho phosphoric acid, an alkali metal ortho phosphate, pentasodium tripolyphosphate, tartaric acid, an alkali metal tartrate or pentaerythritol in the presence of water, said hydrophilic material being employed in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate, drying and subsequently grinding the treated silicate to a particle size of not over 100 microns.
Claim 18
Dependent Claim
44 words
A process according to claim 15 wherein the hydrophilic material is an ortho phosphoric acid or an alkali metal ortho phosphate in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 19
Dependent Claim
36 words
A process according to claim 15 wherein the hydrophilic material is pentasodium tripolyphosphate in an amount sufficient to impart hydrophilicity to the alkali metal aluminum silicate but not over 30% of the weight of the silicate.
Claim 20
Dependent Claim
13 words
The hydrophilic alkali metal aluminum silicate prepared by the process of claim 15.
Claim 21
Dependent Claim
13 words
The hydrophilic alkali metal aluminum silicate prepared by the process of claim 16.
Claim 22
Dependent Claim
13 words
The hydrophilic alkali metal aluminum silicate prepared by the process of claim 17.
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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |