US4410447A
Expired / Lapsed
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Low-foaming nonionic surfactants
Assignee: Union Carbide Corp
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Filing: 1980-11-12
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Granted: 1983-10-18
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Expires: 2000-11-12
Abstract
Abstract A liquid low-foaming nonionic surfactant composition is provided which exhibits superior wetting characteristics and general good scouring and/or detergency properties which comprises a block-random structure represented by the formula R-O-Ax-B-H wherein R is a primary alkyl group having from 7 to 11 carbon atoms; A is oxypropylene groups; x is an integer of from 2 to 15 such that the sum of carbon atoms in R and x is from 12 to about 22, and B is a random mixture of oxyethylene and oxypropylene groups with a molar ratio of oxyethylene to oxypropylene from 1:1 to about 5:1.
Inventors
- 👤 Quintin W. Decker
- 👤 Erich Marcus
- 👤 Robert J. Morlino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:08
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0026; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/10; C07C43/11; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C09; C09K; C09K23/00; C09K23/42; C11D1/00; C11D1/66; C11D1/722; Y; Y10; Y10S; Y10S516/00; Y10S516/905; Y10S516/917; Y10S516/92
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A liquid, low-foaming nonionic surfactant composition having a block-random structure represented by the formula: R-O-A.sub.x -B-H wherein R is a primary alkyl group having from 7 to 11 carbon atoms; A is oxypropylene groups; x is an integer of from 2 to about 15 such that the sum of carbon atoms in said alkyl group and x is from 12 to about 22; and B is a random mixture of oxyethylene and oxypropylene groups the molar ratio of oxyethylene to oxypropylene being from 1:1 to about 5:1 such that the total molar ratio of oxyethylene to oxypropylene in A and B is from 0.2:1 to 1.5:1, said composition having a cloud point of about 20° to about 60° C.
Claim 2
Dependent Claim
119 words
A liquid, low-foaming nonionic surfactant composition having a block-random structure represented by the formula: R-O-A.sub.x -B-H wherein R is a primary alkyl group having from 7 to 11 carbon atoms; A is oxypropylene groups; x is an integer of from 2 to about 15 such that the sum of carbon atoms in said alkyl group and x is from 12 to about 22; and B is a random mixture of oxyethylene and oxypropylene groups the molar ratio of oxyethylene to oxypropylene being from 1:1 to about 5:1 such that the total molar ratio of oxyethylene to oxypropylene in A and B is from 0.2:1 to 1.5:1, said composition having a cloud point of about 20° to about 60° C.
Claim 3
Dependent Claim
23 words
The liquid, nonionic surfaction of claim 1 wherein R is a straight- or branched-chain alkyl group having from 8 to 10 carbon atoms.
Claim 4
Dependent Claim
23 words
The liquid, nonionic surfactant of claim 1 wherein the molar ratio of oxyethylene to oxypropylene in the random mixture is from about 2:1.
Claim 5
Dependent Claim
14 words
The liquid, nonionic surfactant of claim 1 wherein R is the residue of 2-ethylhexanol.
Claim 6
Dependent Claim
16 words
The liquid, nonionic surfactant of claim 1 wherein x is an integer up to about 12.
Claim 7
Dependent Claim
27 words
The liquid, nonionic surfactant of claim 1 wherein the sum of the number of carbon atoms in R and x is a value up to about 20.
References Cited (Backward Citations)
US3770701A
Cited
US4340382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |