US4840738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable biodegradable fabric softening compositions containing 2-hydroxypropyl monoester quaternized ammonium salts
Assignee: Procter and Gamble Co
•
Filing: 1988-02-25
•
Granted: 1989-06-20
•
Expires: 2008-02-25
Abstract
Abstract Shelf-stable biodegradable fabric softening compositions are provided comprising mixtures of a quaternized ester-ammonium softening compound having the formula ##STR1## and mixtures thereof, wherein each R substituent is independently selected from C 1 -C 6 alkyl, alkenyl or hydroxyalkyl groups, R 1 is a C 14 -C 22 hydrocarbyl group, R 2 is a C 13 -C 21 hydrocarbyl group, and A - is a softener compatible anion; and a liquid carrier. These biodegradable compositions have improved product stability and dispersability, as well as excellent fabric softening characteristics.
Inventors
- 👤 Frederick E. Hardy
- 👤 Darlene R. Walley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:14
CPC Classifications
C; C07; C07C; C07C219/00; C07C219/02; C07C219/04; C07C219/06; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
119 words
A liquid fabric softening and antistatic composition comprising: (a) from about 1% to about 20% by weight of submicron-sized particles of a quaternized ester-ammonium softening compound having the formula ##STR17## and mixtures therof, wherein each R substitutent is independently selected from C 1 -C 6 alkyl, alkenyl or hydroxyalkyl groups, R 1 is a C 14 -C 22 hydrocarbyl group, R 2 is a C 13 -C 21 hydrocarbyl group and, A - is a softener compatible anion; and (b) from about 60% to about 98% of a liquid carrier having said softening compound particles dispersed therein; said compositions being maintained at a pH ranging from about 2.0 to about 5.0 and further being substantially free of unprotonated amines.
Claim 2
Dependent Claim
119 words
A liquid fabric softening and antistatic composition comprising: (a) from about 1% to about 20% by weight of submicron-sized particles of a quaternized ester-ammonium softening compound having the formula ##STR17## and mixtures therof, wherein each R substitutent is independently selected from C 1 -C 6 alkyl, alkenyl or hydroxyalkyl groups, R 1 is a C 14 -C 22 hydrocarbyl group, R 2 is a C 13 -C 21 hydrocarbyl group and, A - is a softener compatible anion; and (b) from about 60% to about 98% of a liquid carrier having said softening compound particles dispersed therein; said compositions being maintained at a pH ranging from about 2.0 to about 5.0 and further being substantially free of unprotonated amines.
Claim 3
Dependent Claim
33 words
A composition according to claim 1 wherein each R substituent is C 1 -C 3 alkyl, R 1 is C 16 -C 18 alkyl, and R 2 is C 13 -C 17 alkyl.
Claim 4
Dependent Claim
12 words
A composition according to claim 2 wherein each R substituent is methyl.
Claim 5
Dependent Claim
18 words
A composition according to claim 3 which contains from about 2% to about 10% of the softening compound.
Claim 6
Dependent Claim
15 words
A composition according to claim 1 which is formulated at a pH of about 3.0±0.5.
Claim 7
Dependent Claim
46 words
A composition according to claim 2 wherein the liquid carrier consists of a mixture of (i) C 1 -C 4 monohydric alcohol or mixtures thereof; and (ii) water; the amount of monohydric alcohol being from about 5% to about 50% by weight of the softening compound.
Claim 8
Dependent Claim
20 words
A composition according to claim 6 wherein the particles have an average diameter of from 0.1 to about 0.5 micron.
Claim 9
Dependent Claim
12 words
A composition according to claim 7 wherein the monohydric alcohol is isopropanol.
Claim 10
Dependent Claim
24 words
A composition according to claim 1 which additionally contains from about 0.1% to about 10% of a conventional di-(higher alkyl) quaternary ammonium softening agent.
Claim 11
Dependent Claim
21 words
A composition according to claim 1 which additionally contains from about 0.1% to about 10% by weight of a nonionic extender.
Claim 12
Dependent Claim
27 words
A composition according to claim 10 wherein the nonionic extender is selected from the group consisting of glycerol esters, fatty alcohols, ethoxylated linear alcohols, and mixtures thereof.
Claim 13
Dependent Claim
14 words
A composition according to claim 5 wherein the quaternized ester-ammonium softening compound is ##STR18##
Claim 14
Dependent Claim
21 words
A composition according to claim 1 in concentrated form which contains from about 11% to about 20% of the softening compound.
Claim 15
Dependent Claim
38 words
A composition according to claim 13 which additionally contains from about 20 to about 3,000 ppm of a salt selected from the group consisting of calcium chloride, magnesium chloride, sodium chloride, potassium chloride, lithium chloride, and mixtures thereof.
Claim 16
Dependent Claim
12 words
A composition according to claim 14 wherein the salt is calcium chloride.
Claim 17
Dependent Claim
25 words
A method of softening and providing an antistatic finish to fabrics by contacting said fabrics with an effective amount of the composition of claim 1.
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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) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |