Patent US4104175A successfully refreshed from Google Patents.
US4104175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous solutions of quaternary ammonium compounds
Assignee: Nouryon Surface Chemistry AB
•
Filing: 1975-11-19
•
Granted: 1978-08-01
•
Expires: 1995-11-19
Abstract
Abstract Quaternary ammonium compounds are provided which are useful in the treatment of substrates such as plastic materials and textile materials, both woven and nonwoven, from natural and synthetic fibers and mixtures thereof, to impart antistatic properties. A process is also provided for the preparation of such compounds, and for the treatment of substrates with such compounds.
Inventors
- 👤 Eva Margareta Martinsson
- 👤 Karl Martin Edvin Hellsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:44
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/16; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C14; C14C; C14C9/00; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20; Y10S428/00; Y10S428/922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A freeze-thaw stable aqueous solution comprising a quaternary ammonium compound having the general formula: ##STR12## wherein: R 1 and R 2 are aliphatic hydrocarbon groups having from about eight to about fourteen carbon atoms; R 3 and R 4 are methyl, ethyl or hydroxyethyl; n is a number from 2 to 4, representing the number of carbon atoms in the oxyalkylene substituent; n 1 and n 2 are numbers within the range from 0.5 to about 10; and X is an anion selected from the group consisting of chloride, bromide, iodide, nitrate, hydroxyl, phosphate, methyl sulfate, formate, acetate, citrate, propionate, tartrate and carbonate in a concentration from about 5 to about 10% by weight, having no or only a slight tendency to gel and freeze-separate when subjected to repeated freezing and thawing.
Claim 2
Dependent Claim
132 words
A freeze-thaw stable aqueous solution comprising a quaternary ammonium compound having the general formula: ##STR12## wherein: R 1 and R 2 are aliphatic hydrocarbon groups having from about eight to about fourteen carbon atoms; R 3 and R 4 are methyl, ethyl or hydroxyethyl; n is a number from 2 to 4, representing the number of carbon atoms in the oxyalkylene substituent; n 1 and n 2 are numbers within the range from 0.5 to about 10; and X is an anion selected from the group consisting of chloride, bromide, iodide, nitrate, hydroxyl, phosphate, methyl sulfate, formate, acetate, citrate, propionate, tartrate and carbonate in a concentration from about 5 to about 10% by weight, having no or only a slight tendency to gel and freeze-separate when subjected to repeated freezing and thawing.
Claim 3
Dependent Claim
26 words
A freeze-thaw stable aqueous solution in accordance with claim 1, in which n 1 and n 2 are numbers within the range from 0.5 to 2.
Claim 4
Dependent Claim
30 words
A freeze-thaw stable aqueous solution in accordance with claim 1, in which R 1 and R 2 are each alkyl groups having from about eight to about fourteen carbon atoms.
Claim 5
Dependent Claim
25 words
A freeze-thaw stable aqueous solution in accordance with claim 3, in which R 1 and R 2 are mixed decyl, dodecyl and tetradecyl alkyl groups.
Claim 6
Dependent Claim
20 words
A freeze-thaw stable aqueous solution in accordance with claim 1, in which R 3 and R 4 are methyl groups.
Claim 7
Dependent Claim
34 words
A freeze-thaw stable aqueous solution in accordance with claim 5, in which R 1 and R 2 are mixed decyl, dodecyl and tetradecyl alkyl groups, and n 1 and n 2 are each 0.5.
References Cited (Backward Citations)
US2836517A
Cited
US2897170A
Cited
GB1034042A
Cited
FR1352450A
Cited
US3326927A
Cited
US3445440A
Cited
US3624082A
Cited
US3639296A
Cited
US3510452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |