US4070298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defoaming detergent additive
Assignee: Olin Corp
•
Filing: 1976-07-26
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Granted: 1978-01-24
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Expires: 1996-07-26
Abstract
Abstract An additive composition which can be adapted into conventional automatic dishwasher detergents for reducing foam during use thereof, comprising:
Inventors
- 👤 Michael Scardera
- 👤 Robert N. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C; C11; C11D; C11D1/00; C11D1/02; C11D1/34; C11D1/345; C11D1/66; C11D1/722; C11D1/78; C11D3/00; C11D3/0005; C11D3/0026; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
137 words
An additive composition which can be adapted into automatic dishwasher detergents for reducing foam during use thereof, comprising: A. a nonionic surface active agent having the formula: ##STR4## wherein R is a substantially linear, alkyl radical having an average from about 6 to about 12 carbon atoms, R' is a linear, alkyl radical of 1 to about 4 carbon atoms, R" is a linear, alkyl radical of 1 to about 4 carbon atoms, x is an integer of 1 to about 6, y is an integer of about 4 to about 20, and z is an integer of about 4 to about 25, and B. an alkyl phosphate ester having an average of about 16 to about 28 carbon atoms in the alkyl radical, wherein the weight ratio of (A):(B) is from about 1:1 to about 99:1.
Claim 2
Dependent Claim
137 words
An additive composition which can be adapted into automatic dishwasher detergents for reducing foam during use thereof, comprising: A. a nonionic surface active agent having the formula: ##STR4## wherein R is a substantially linear, alkyl radical having an average from about 6 to about 12 carbon atoms, R' is a linear, alkyl radical of 1 to about 4 carbon atoms, R" is a linear, alkyl radical of 1 to about 4 carbon atoms, x is an integer of 1 to about 6, y is an integer of about 4 to about 20, and z is an integer of about 4 to about 25, and B. an alkyl phosphate ester having an average of about 16 to about 28 carbon atoms in the alkyl radical, wherein the weight ratio of (A):(B) is from about 1:1 to about 99:1.
Claim 3
Dependent Claim
21 words
The additive composition of claim 1 wherein, as applied to said formula, each of the radicals R' and R" is methyl.
Claim 4
Dependent Claim
27 words
The additive composition of claim 1 wherein said alkyl phosphate ester is the product of reaction a mixture of alkyl alcohols with phosphorous pentoxide or polyphosphoric acid.
Claim 5
Dependent Claim
34 words
The additive composition of claim 3 wherein, as applied to said formula, the radical R contains an average of 7-10 carbon atoms and each of the radicals R' and R" is methyl or ethyl.
Claim 6
Dependent Claim
30 words
The additive composition of claim 4 wherein, as applied to said formula, x is an integer of 2-4,y is an integer of 5-15 and z is an integer of 6-20.
Claim 7
Dependent Claim
22 words
The additive composition of claim 5 wherein said alkyl phosphate ester contains an average of 18-25 carbon atoms in the alkyl chain.
Claim 8
Dependent Claim
21 words
The additive composition of claim 6 wherein, as applied to said formula, each of the radicals R' and R" is methyl.
Claim 9
Dependent Claim
18 words
The additive composition of claim 7 wherein 115% polyphosphoric acid is employed in preparing said alkyl phosphate ester.
Claim 10
Dependent Claim
16 words
The additive composition of claim 8 wherein said ratio ranges from about 3:1 to about 90:1.
Claim 11
Dependent Claim
31 words
The additive composition of claim 9 wherein from about 1 to about 6 moles of said alcohol mixture is employed per mole of polyphosphoric acid in preparing said alkyl phosphate ester.
Claim 12
Dependent Claim
24 words
The additive composition of claim 10 wherein, as applied to said formula, x is 3, y is 12 and z is 15 or 18.
Claim 13
Dependent Claim
22 words
The additive composition of claim 11 wherein said alkyl phosphate ester contains an average of 19-23 carbon atoms in the alkyl chain.
Claim 14
Dependent Claim
16 words
The additive composition of claim 12 wherein said ratio ranges from about 9:1 to about 49:1.
Claim 15
Dependent Claim
25 words
In an automatic dishwasher detergent formulation, the improvement which comprises incorporating therein about 0.2 to about 20 weight percent of the additive of claim 1.
Claim 16
Dependent Claim
24 words
In an automatic detergent formulation, the improvement which comprises incorporating therein about 0.5 to about 10 weight percent of the additive of claim 7.
Claim 17
Dependent Claim
25 words
In an automatic dishwasher detergent formulation, the improvement which comprises incorporating therein about 2 to about 4 weight percent of the additive of claim 13.
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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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |