US4767547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biodegradable fabric softeners
Assignee: Procter and Gamble Co
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Filing: 1987-03-26
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Granted: 1988-08-30
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Expires: 2007-03-26
Abstract
Abstract Fabric softening compositions which are rapidly biodegradable and particularly shelf stable are disclosed. These compositions contain a specific quaternary ammonium, and are formulated in a narrowly defined pH range.
Inventors
- 👤 Theodericus J. Straathof
- 👤 Axel Konig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:26
CPC Classifications
D; D06; D06M; D06M16/00; C; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/16; C11D3/37; C11D3/3703; C11D3/373
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
An aqueous fabric softening composition with excellent hydrolytic stability on storage, containing a rapidly biodegradable quaternary ammonium softening agent of the formula: ##STR8## R 1 is (CH 2 ) n --Q--T 2 or T 3 ; R 2 is (CH 2 ) n --Q--T 4 or T 5 or R 3 ; R 3 is C 1 -C 4 alkyl; T 1 , T 2 , T 3 , T 4 , T 5 are (the same or different) C 12 -C 22 alkyl or alkenyl; n is an integer from 1 to 4; and X.sup.⊖ is a softener-compatible anion, the composition having a pH, at 20° C., of from 2.5 to 4.2 upon dilution, in de-ionized water, to a concentration of 0.5% to 1% of said rapidly biodegradable quaternary ammonium.
Claim 2
Dependent Claim
131 words
An aqueous fabric softening composition with excellent hydrolytic stability on storage, containing a rapidly biodegradable quaternary ammonium softening agent of the formula: ##STR8## R 1 is (CH 2 ) n --Q--T 2 or T 3 ; R 2 is (CH 2 ) n --Q--T 4 or T 5 or R 3 ; R 3 is C 1 -C 4 alkyl; T 1 , T 2 , T 3 , T 4 , T 5 are (the same or different) C 12 -C 22 alkyl or alkenyl; n is an integer from 1 to 4; and X.sup.⊖ is a softener-compatible anion, the composition having a pH, at 20° C., of from 2.5 to 4.2 upon dilution, in de-ionized water, to a concentration of 0.5% to 1% of said rapidly biodegradable quaternary ammonium.
Claim 3
Dependent Claim
15 words
A composition in accordance with claim 1 wherein said pH is from 3.4 to 4.2.
Claim 4
Dependent Claim
19 words
A composition in accordance with claim 1 wherein the rapidly biodegradable quaternary ammonium softening agent is N,N-di(2-tallowoyl-oxy-ethyl)N,N-dimethyl ammonium chloride.
Claim 5
Dependent Claim
22 words
An aqueous fabric softening composition in accordance with claim 1 comprising from 2% to 25% of said rapidly biodegradable quaternary ammonium compound.
Claim 6
Dependent Claim
38 words
A composition according to claim 1, further comprising from 2% to 25% of a conventional softening active compound selected from the group of quaternary ammonium salts having at least one acyclic aliphatic C 15 -C 22 hydrocarbon group.
Claim 7
Dependent Claim
107 words
A composition according to claim 1 which further comprises from 1% to 40% of a di-(higher alkyl)cyclic amine of formula: ##STR9## wherein n is 2 or 3; R 1 and R 2 are, independently, a C 8 -C 30 alkyl or alkenyl; Q is CH or N; and X is either ##STR10## wherein T is O or NR 5 , with R 5 being H or C 1 -C 4 alkyl and R 4 being a divalent C 1 -C 3 alkylene group or (C 2 H 4 O) m , with m being a number of from 1 to 8, or X is R 4 .
Claim 8
Dependent Claim
67 words
A composition according to claim 1 which further comprises from 0.1% to 10% of a predominantly linear di(C 1 -C 5 )alkyl or C 1 -C 5 alkylaryl siloxane in which the alkyl groups may be partially or wholly fluorinated and which may be substituted with cationic nitrogen groups, the siloxane having a viscosity at 25° C. of at least 100 centistokes and up to 100,000 centistokes.
Claim 9
Dependent Claim
13 words
A composition according to claim 7 wherein the siloxane is a polydimethyl siloxane.
Claim 10
Dependent Claim
18 words
A composition according to claim 1 which further comprises from 0.1% to 10% of a soil release agent.
Claim 11
Dependent Claim
61 words
A composition according to claim 9 wherein the soil release polymer is of the formula: ##STR11## wherein R 1 is 1,4-phenylene; R 2 is 1,2-propylene; X is hydrogen; n is an integer of 6 to 120; u is generally an integer of 5, or less, with at least 20% to 40% of the material having u ranging from 3 to 5.
Claim 12
Dependent Claim
23 words
A composition according to claim 6 wherein n is 2 and R 1 and R 2 are, independently, C 11 -C 22 alkyl.
Claim 13
Dependent Claim
19 words
A composition according to claim 11 wherein R 1 and R 2 are, independently, C 15 -C 18 alkyl.
References Cited (Backward Citations)
FR1593921A
Cited
EP0021431A2
Cited
US4339391A
Cited
US4429859A
Cited
US4456554A
Cited
US4661267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |