US4137180A
Expired / Lapsed
US
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Fabric treatment materials
Assignee: Lever Brothers Co
•
Filing: 1977-07-01
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Granted: 1979-01-30
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Expires: 1997-07-01
Abstract
Abstract Fabric softening is provided by cationic diesters of the formula: ##STR1## wherein R 1 , R 2 and R 3 are each an alkyl or hydroxyalkyl group containing from 1 to 4 carbon atoms, or a benzyl group, R 4 and R 5 are each alkyl chains containing from 11 to 23 carbon atoms, and X - is a water soluble anion. Mixtures of these diesters with the corresponding monoesters are described together with preparative methods.
Inventors
- 👤 Appaya R. Naik
- 👤 Klaus H. Todt
- 👤 Martin A. Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:24
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463; C; C11; C11D; C11D1/00; C11D1/38; C11D1/62
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
70 words
A chemical compound which is substantially free of the corresponding monoester having the formula: ##STR4## wherein R 1 , R 2 and R 3 are each an alkyl or hydroxy alkyl group containing from 1 to 4 carbon atoms, or a benzyl group; R 4 and R 5 are each an alkyl or alkenyl chain containing from 11 to 23 carbon atoms; and X - is a water soluble anion.
Claim 2
Dependent Claim
70 words
A chemical compound which is substantially free of the corresponding monoester having the formula: ##STR4## wherein R 1 , R 2 and R 3 are each an alkyl or hydroxy alkyl group containing from 1 to 4 carbon atoms, or a benzyl group; R 4 and R 5 are each an alkyl or alkenyl chain containing from 11 to 23 carbon atoms; and X - is a water soluble anion.
Claim 3
Dependent Claim
23 words
A chemical compound according to claim 1 wherein R 1 , R 2 and R 3 each contain 1 or 2 carbon atoms.
Claim 4
Dependent Claim
21 words
A chemical compound according to claim 1 wherein R 4 and R 5 each contain from 15 to 23 carbon atoms.
Claim 5
Dependent Claim
29 words
A mixture of the chemical compound of claim 1 with the corresponding monoester, the former being present in the mixture in an amount of at least 50% by weight.
Claim 6
Dependent Claim
20 words
A mixture according to claim 4 wherein the compound is present in an amount of at least 75% by weight.
Claim 7
Dependent Claim
20 words
A mixture according to claim 4 wherein the compound is present in an amount of at least 90% by weight.
Claim 8
Dependent Claim
56 words
A method of preparing the compound of claim 1 wherein i. an amine compound of the formula CH 2 (OH)CH(OH)CH 2 NR 1 R 2 is reacted with a fatty acid of the formula R 4 COOH and/or R 5 COOH in molten form to esterify the hydroxy groups; and ii. the reaction product is quaternized.
Claim 9
Dependent Claim
26 words
A method according to claim 7 wherein step (i) is performed at a temperature in the range of from about 120° C. to about 190° C.
Claim 10
Dependent Claim
23 words
A method according to claim 7 wherein the molar proportion of fatty acid to amine is in the range of 1.5:1 to 2:1.
Claim 11
Dependent Claim
31 words
A method according to claim 7 wherein the quaternization is achieved by reacting the product of step (i) with a compound of the formula R 3 X in an organic solvent.
Claim 12
Dependent Claim
45 words
A method according to claim 7 wherein the quaternization is achieved by reacting the product of step (i) with an acid of the formula HX to form the amine salt, and then alkoxylating the salt to form a product compound wherein R 3 is hydroxyalkyl.
Claim 13
Dependent Claim
51 words
A method of preparing a compound according to claim 1 wherein a compound of the formula ##STR5## is reacted with fatty acid anhydride of the formula (R 4 CO) 2 O in a non-hydroxylated solvent in the presence of a catalytic amount of an acid capable of opening the epoxy ring.
Claim 14
Dependent Claim
25 words
A method according to claim 12 wherein the molar proportion of acid anhydride to epoxy compound is in the range of from 1:1 to 1.5:1.
Claim 15
Dependent Claim
9 words
An aqueous dispersion containing the compound of claim 1.
Claim 16
Dependent Claim
19 words
An aqueous dispersion according to claim 14 containing from about 2% to about 15% by weight of the compound.
Claim 17
Dependent Claim
9 words
An aqueous dispersion containing the mixture of claim 4.
Claim 18
Dependent Claim
19 words
An aqueous dispersion according to claim 16 containing from about 2% to about 15% by weight of the mixture.
Claim 19
Dependent Claim
9 words
An aqueous dispersion containing the mixture of claim 5.
Claim 20
Dependent Claim
19 words
An aqueous dispersion according to claim 8 containing from about 2% to about 15% by weight of the mixture.
Claim 21
Dependent Claim
9 words
An aqueous dispersion containing the mixture of claim 6.
Claim 22
Dependent Claim
19 words
An aqueous dispersion according to claim 20 containing from about 2% to about 15% by weight of the mixture.
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |