US4416794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rinse aid compositions containing amino-silanes
Assignee: Procter and Gamble Co
•
Filing: 1982-09-22
•
Granted: 1983-11-22
•
Expires: 2002-09-22
Abstract
Abstract A liquid rinse aid for use in automatic dishwashing machines comprises a low foaming ethoxylated nonionic surfactant, an organic chelating agent, a hydrotrope-water solubilizing system and 0.05-10%, by weight of the rinse aid, of an amino-silane.
Inventors
- 👤 Christian R. Barrat
- 👤 John R. Walker
- 👤 Jean Wevers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:16
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/162; C11D1/00; C11D1/66; C11D1/72
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A liquid rinse aid composition for use in an automatic dishwashing machine comprising from 1-40% by weight of a low foaming ethoxylated nonionic surfactant, from 0-30% by weight of an organic chelating agent and a hydrotrope-water solubilising system characterised in that the composition comprises from 0.05-10% by weight of an amino-silane of the general formula: ##STR10## R 1 =C 1-4 -alkyl or C 1-4 -hydroxyalkyl; x is 0 or 1; m is 1-6; R 3 is hydrogen, R 1 , ##STR11## R 5 R 4 is hydrogen or R 1 ; n is 1-6; y is 0-6; R 5 =R 4 , ##STR12## p=1-6.
Claim 2
Dependent Claim
104 words
A liquid rinse aid composition for use in an automatic dishwashing machine comprising from 1-40% by weight of a low foaming ethoxylated nonionic surfactant, from 0-30% by weight of an organic chelating agent and a hydrotrope-water solubilising system characterised in that the composition comprises from 0.05-10% by weight of an amino-silane of the general formula: ##STR10## R 1 =C 1-4 -alkyl or C 1-4 -hydroxyalkyl; x is 0 or 1; m is 1-6; R 3 is hydrogen, R 1 , ##STR11## R 5 R 4 is hydrogen or R 1 ; n is 1-6; y is 0-6; R 5 =R 4 , ##STR12## p=1-6.
Claim 3
Dependent Claim
24 words
A liquid rinse aid composition according to claim 1 wherein the amino-silane is present in an amount of from 0.1% to 5% by weight.
Claim 4
Dependent Claim
45 words
The composition in accordance with claim 1 wherein the substituents of the amino-silane are as follows: R 1 =--CH 3 or --C 2 H 5 , x=0 m=2 or 3 R 3 =hydrogen and ##STR13## R 4 =hydrogen or methyl R 5 =hydrogen or methyl.
Claim 5
Dependent Claim
33 words
The composition in accordance with claim 1 wherein the aminosilane is selected from the group consisting of: (CH.sub.3 --O).sub.3 --Si--(CH.sub.2).sub.3 --NH--(CH.sub.2).sub.2 --NH.sub.2 (CH.sub.3 --O).sub.3 --Si--(CH.sub.2).sub.3 --NH--(CH.sub.2).sub.3 --NH.sub.2 (CH.sub.3 --O).sub.3 --Si--(CH.sub.2).sub.3 --NH--(CH.sub.2).sub.2 --NH(CH.sub.2).sub.2 NH.sub.2
Claim 6
Dependent Claim
39 words
A liquid composition according to any one of claims 1-4 characterised in that the composition comprises from 0.1-10% by weight of Mg ++ , Zn ++ or Bi ++ ions in the form of a water soluble salt thereof.
Claim 7
Dependent Claim
28 words
A liquid composition according to claim 5 wherein the water soluble salt comprises magnesium or zinc chloride in an amount of from 2-5% by weight of the composition.
References Cited (Backward Citations)
CA753603A
Cited
US2972598A
Cited
FR1207724A
Cited
GB858445A
Cited
US2971864A
Cited
DE1793280U
Cited
US3085908A
Cited
US3033815A
Cited
US3175921A
Cited
US3876459A
Cited
US4062999A
Cited
FR2299447B1
Cited
US4005024A
Cited
US4005028A
Cited
US4005118A
Cited
US4005030A
Cited
US4005025A
Cited
US4137179A
Cited
DE2843709A1
Cited
US4152273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |