Patent US4764292A successfully refreshed from Google Patents.
US4764292A
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Fabric-softening particles
Assignee: Lever Brothers Co
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Filing: 1987-10-05
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Granted: 1988-08-16
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Expires: 2007-10-05
Abstract
Abstract A fabric softening particle is provided comprising a mixture of quaternary ammonium ion-exchanged clay having an ion-exchange capacity of at least about 10 meq/100 gms and preferably about 50 meq/100 gms and a water-insoluble quaternary ammonium salt in the ratio of 1:3 to 3:1. The particle softens more efficiently than either of its components. When incorporated into a detergent powder, detergency is not diminished as would occur when either of the particle components are separately incorporated.
Inventors
- 👤 Ralph R. Sepulveda
- 👤 John A. Hockey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/126
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
176 words
A fabric softening particle comprising: (i) a clay having an ion-exchange capacity of at least about 50 meq/100 grams, in which clay from about 5 to 100 molar percent of the exchangeable cations are water insoluble quaternary ammonium ions of the formula [R 1 R 2 R 3 R 4 N] + wherein R 1 , R 2 , R 3 and R 4 are organic radicals selected from the group consisting of C 1 -C 22 alkyl, benzyl, C 10 -C 16 alkyl benzyl, C 10 -C 16 alkyl phenyl, C 2 -C 4 hydroxyalkyl, cyclic structures in which nitrogen forms part of a ring, and mixtures thereof; and (ii) a water-insoluble quaternary ammonium salt of the formula [R 1 R 2 R 3 R 4 N] + n X n- wherein R 1 , R 2 , R 3 and R 4 are organic radicals as defined above; X can be any salt forming anion; n is an integer from 1 to 3; and the ratio of (i) to (ii) is 3:1 to 1:3.
Claim 2
Dependent Claim
176 words
A fabric softening particle comprising: (i) a clay having an ion-exchange capacity of at least about 50 meq/100 grams, in which clay from about 5 to 100 molar percent of the exchangeable cations are water insoluble quaternary ammonium ions of the formula [R 1 R 2 R 3 R 4 N] + wherein R 1 , R 2 , R 3 and R 4 are organic radicals selected from the group consisting of C 1 -C 22 alkyl, benzyl, C 10 -C 16 alkyl benzyl, C 10 -C 16 alkyl phenyl, C 2 -C 4 hydroxyalkyl, cyclic structures in which nitrogen forms part of a ring, and mixtures thereof; and (ii) a water-insoluble quaternary ammonium salt of the formula [R 1 R 2 R 3 R 4 N] + n X n- wherein R 1 , R 2 , R 3 and R 4 are organic radicals as defined above; X can be any salt forming anion; n is an integer from 1 to 3; and the ratio of (i) to (ii) is 3:1 to 1:3.
Claim 3
Dependent Claim
24 words
A fabric softening particle according to claim 1 further comprising a water-soluble or water-dispersible binder present in an amount from about 0.1 to 20%.
Claim 4
Dependent Claim
20 words
A fabric softening particle according to claim 2 wherein the amount of said binder is from about 0.5%, to 10%.
Claim 5
Dependent Claim
39 words
A fabric softening particle according to claim 2 wherein the binder is selected from the group consisting of organic homo- or hetero polymers, organic nonionic compounds, longchain C 10 -C 22 fatty acids and fatty acid soaps, and mixtures
Claim 6
Dependent Claim
49 words
A fabric softening particle according to claim 4 wherein the organic nonionic binder is selected from the group consisting of polyethylene glycols, C 15 -C 24 fatty alcohols or C 8 -C 12 alkyl phenyls having from about 10 to 60 ethylene oxide units, and long-chain fatty acids alkylolamides.
Claim 7
Dependent Claim
18 words
A fabric softening particle according to claim 1 wherein the ratio of (i) to (ii) is about 1:1.
Claim 8
Dependent Claim
20 words
A fabric softening particle according to claim 1 wherein said water-insoluble quaternary ammonium salt is a distearyl dimethyl ammonium salt.
Claim 9
Dependent Claim
16 words
A fabric softening particle according to claim 1 wherein said clay is of the montmorillonite type.
Claim 10
Dependent Claim
20 words
A fabric softening particle according to claim 1 wherein the exchanged quaternary ammonium cations are dihydrogenated ditallow dimethyl ammonium ions.
Claim 11
Dependent Claim
34 words
A detergent composition comprising: (i) from 0.1% to 20% of fabric softening particles according to claim 1; (ii) from 2% to 50% of a surfactant; and (iii) from 2% to 80% of a builder.
Claim 12
Dependent Claim
25 words
A detergent composition according to claim 10 wherein said surfactant is selected from the group consisting of anionic, nonionic, zwitterionic, amphoteric and surfactant mixtures thereof.
Claim 13
Dependent Claim
46 words
A detergent composition according to claim 10 further comprising from 0.01% to 50% of detergent adjuncts selected from the group consisting of fillers, foam boosters and controllers, colorants, anti-redeposition agents, buffers, fluorescent whitening agents, bleaching agents and their activators, anti-tarnishing agents, perfumes, germicides and mixtures thereof.
Claim 14
Dependent Claim
40 words
A detergent composition according to claim 10 comprising: (i) from about 3% to 10% of fabric softening particles according to claim 1; (ii) from 5% to 20% of an anionic surfactant; and (iii) from 20% to 60% of a builder.
Claim 15
Dependent Claim
174 words
A fabric softening particle comprising: (i) a clay having an ion-exchange capacity of at least about 10 meq/100 grams, in which clay from about 5 to 100 molar percent of the exchangeable cations are quaternary ammonium ions of the formula [R 1 R 2 R 3 R 4 N] + wherein R 1 , R 2 , R 3 and R 4 are organic radicals selected from the group consisting of C 1 -C 22 alkyl, benzyl, C 10 -C 16 alkyl benzyl, C 10 -C 16 alkyl phenyl, C 2 -C 4 hydroxyalkyl, cyclic structures in which nitrogen forms part of a ring, and mixtures thereof; and (ii) a water-insoluble quaternary ammonium salt of the formula [R 1 R 2 R 3 R 4 N] + n X n- wherein R 1 , R 2 , R 3 and R 4 are organic radicals as defined above; x can be any salt forming anion; n is an integer from 1 to 3; and the ratio of (i) to (ii) is 3:1 to, 1:3.
Claim 16
Dependent Claim
174 words
A fabric softening particle comprising: (i) a clay having an ion-exchange capacity of at least about 10 meq/100 grams, in which clay from about 5 to 100 molar percent of the exchangeable cations are quaternary ammonium ions of the formula [R 1 R 2 R 3 R 4 N] + wherein R 1 , R 2 , R 3 and R 4 are organic radicals selected from the group consisting of C 1 -C 22 alkyl, benzyl, C 10 -C 16 alkyl benzyl, C 10 -C 16 alkyl phenyl, C 2 -C 4 hydroxyalkyl, cyclic structures in which nitrogen forms part of a ring, and mixtures thereof; and (ii) a water-insoluble quaternary ammonium salt of the formula [R 1 R 2 R 3 R 4 N] + n X n- wherein R 1 , R 2 , R 3 and R 4 are organic radicals as defined above; x can be any salt forming anion; n is an integer from 1 to 3; and the ratio of (i) to (ii) is 3:1 to, 1:3.
Claim 17
Dependent Claim
19 words
A fabric softening particle according to claim 14 wherein the ion-exchange capacity is at least about 30 meq/100 grams.
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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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |