Patent US4562002A successfully refreshed from Google Patents.
US4562002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous aqueous fabric softening composition with stilbene sulfonic acid fluorescent whitener
Assignee: Lever Brothers Co
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Filing: 1984-11-05
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Granted: 1985-12-31
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Expires: 2004-11-05
Abstract
Abstract The invention provides a composition and method wherein fluorescent whitening agents are satisfactorily dispersed in fabric softening compositions and viscosity stability of the composition is achieved. The fabric softening and whitening composition comprises: (i) from about 0.5% to about 10% of a cationic surfactant; (ii) from about 0.001% to about 0.3% of a stilbene sulfonic acid fluorescent whitening agent; (iii) from about 0.001% to about 0.5% of a non-ionizable base; and (iv) deionized water.
Inventors
- 👤 Oscar W. Neiditch
- 👤 Edmund S. Hurdle
- 👤 Daniel J. Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:39
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/40; C11D3/42; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
A fabric softening and whitening composition prepared by a method comprising: (a) preparing an organic premix of: (i) from about 0.5% to about 10% fabric softening cationic surfactant; (ii) from about 0.001% to about 0.3% stilbene sulfonic acid fluorescent whitening agent added in acid form; (iii) from about 0.001% to about 0.5% of a non-ionizable base, the ratio of base to fluorescent whitening agent on an equivalent weight basis being about 1:1 to about 6:1; (b) adding said premix to deionized water containing water-soluble adjunct fabric softening components including from 0.01% to 0.3% of an acidic pH adjusting agent to obtain a pH of 3.0 to 6.0; and (c) mixing the combined blends with sufficient stirring to uniformly disperse all components.
Claim 2
Dependent Claim
121 words
A fabric softening and whitening composition prepared by a method comprising: (a) preparing an organic premix of: (i) from about 0.5% to about 10% fabric softening cationic surfactant; (ii) from about 0.001% to about 0.3% stilbene sulfonic acid fluorescent whitening agent added in acid form; (iii) from about 0.001% to about 0.5% of a non-ionizable base, the ratio of base to fluorescent whitening agent on an equivalent weight basis being about 1:1 to about 6:1; (b) adding said premix to deionized water containing water-soluble adjunct fabric softening components including from 0.01% to 0.3% of an acidic pH adjusting agent to obtain a pH of 3.0 to 6.0; and (c) mixing the combined blends with sufficient stirring to uniformly disperse all components.
Claim 3
Dependent Claim
24 words
A composition according to claim 1 wherein heat is applied in stirring the organic premix and the combination of organic premix with aqueous blend.
Claim 4
Dependent Claim
95 words
A composition according to claim 1 wherein the cationic surfactant has the formula: ##STR7## wherein R 1 is an alkyl or alkenyl group having from 8 to 22 carbon atoms; R 2 is an alkyl group containing from 1 to 3 carbon atoms; R 3 and R 4 is selected from the group consisting of R 1 and R 2 ; X is an anion selected from the group consisting of halides, sulfates, alkyl sulfates having from 1 to 3 carbon atoms in the alkyl chain, and acetates; and y is the valency of X.
Claim 5
Dependent Claim
60 words
A composition according to claim 1 wherein the cationic surfactants have the formula: ##STR8## wherein R 5 is hydrogen or a C 1 -C 4 alkyl radical, R 6 is a C 1 -C 4 alkyl radical, R 7 is a C 9 -C 25 alkyl radical and R 8 is hydrogen or a C 8 -C 25 alkyl radical.
Claim 6
Dependent Claim
24 words
A composition according to claim 1 wherein R 6 is methyl, R 7 and R 8 are tallow alkyl and R 5 is hydrogen.
Claim 7
Dependent Claim
21 words
A composition according to claim 1 wherein the cationic surfactant is a mixture of non-cyclic quaternary ammonium salt and imidazolinium salts.
Claim 8
Dependent Claim
18 words
A composition according to claim 1 wherein the fluorescent whitening agent is either 4,4'-bis[(4-phenylamino-6-N-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acids or 5-(2H-naphtho[1,2d]triazol-2-yl)-2-(2-phenylethenyl)-benzene-sulfonic acid.
Claim 9
Dependent Claim
29 words
A composition according to claim 1 wherein the non-ionizable base is chosen from the group consisting of ammonia, alkanolamine, pyridine, pyrrole, pyrrolidone, piperidine, piperazine, morpholine, alkylamines and mixtures thereof.
Claim 10
Dependent Claim
24 words
A composition according to claim 1 wherein the non-ionizable base is an alkyl, alkenyl, aryl or alkylaryl derivative of the bases in claim 7.
Claim 11
Dependent Claim
25 words
A composition according to claim 1 wherein the non-ionizable base is a mono-, di- or tri-alkylamine, the alkyl group being C 1 -C 24 .
Claim 12
Dependent Claim
23 words
A composition according to claim 1 wherein the non-ionizable base is selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine and mixtures thereof.
Claim 13
Dependent Claim
16 words
A composition according to claim 1 wherein the cationic surfactant is dimethyl dihydrogenated tallow ammonium chloride.
Claim 14
Dependent Claim
15 words
A composition according to claim 1 wherein the acid pH adjusting agent is citric acid.
References Cited (Backward Citations)
US2765239A
Cited
US2937997A
Cited
US2980625A
Cited
US3904533A
Cited
US3714151A
Cited
US3953380A
Cited
GB1380705A
Cited
US3870647A
Cited
US3959157A
Cited
US3997453A
Cited
GB1508425A
Cited
US4202800A
Cited
US4140641A
Cited
US4239659A
Cited
US4233164A
Cited
US4233167A
Cited
US4320013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |