Patent US3755201A successfully refreshed from Google Patents.
US3755201A
Expired / Lapsed
US
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Laundry product containing mixed dye bluing agents
Assignee: Colgate Palmolive Co
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Filing: 1971-07-26
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Granted: 1973-08-28
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Expires: 1991-07-26
Abstract
Abstract A laundry product, such as a detergent composition, containing a mixture of dyes which results in laundry washed with the detergent being ''''blued'''' to a desired extent and with the desired shade of blue. The dyes employed are used in very small quantities, have little effect on the color of the laundry product, if it is in solid particulate form, are stable in alkaline media, such as crutcher mixes, and are readily bleachable by hypochlorite bleaches, so that objectionable overbluing effects need not be obtained on repeated washings. Preferred dyes employed are those of Index Numbers 24410 (Geigy, C.I. Direct Blue 1) and 29120 (Geigy, C.I. Direct Violet 66).
Inventors
- 👤 R Trimmer
- 👤 W Gross
- 👤 W Gangwisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:04
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/40; C09; C09B; C09B33/00; C09B33/02; C09B33/08; C09B33/10; C09B35/00; C09B35/02; C09B35/039; C09B35/08; C09B35/10; C09B35/16; C11D3/42; D; D06; D06L; D06L4/00; D06L4/60; D06L4/686; Y; Y10; Y10S; Y10S8/00; Y10S8/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
A detergent composition according to claim 1 wherein the greenish blue dyestuff is of the formula
Claim 2
Dependent Claim
16 words
A detergent composition according to claim 2 wherein the greenish blue dyestuff is of the formula
Claim 3
Dependent Claim
86 words
A detergent composition according to claim 3 which also comprises from 0.05 to 3 percent of an optical brightener or fluorescent dye which is of apparent violet or reddish blue tint when applied to fabrics and the mixture of the described water soluble synthetic organic greenish blue and reddish blue dyes present is such that, with the fluorescent dye, the fabric subjected to contact with aqueous solutions of the detergent composition is tinted a more neutral blue than the fabric with fluorescent dye only on it.
Claim 4
Dependent Claim
81 words
A detergent composition according to claim 4 wherein the proportion of fluorescent dye is from 0.2 to 2 percent, the proportion of greenish blue synthetic dyestuff is from 0.0001 to 0.004 percent, the proportion of reddish blue synthetic organic dyestuff is from 0.0001 to 0.004 percent, the ratio of greenish blue synthetic dyestuff to reddish blue synthetic dyestuff is from 2:1 to 4:1 and the ratio of mixture of substantive synthetic organic dyestuffs to fluorescent dye is from 5:10,000 to 5:1,000.
Claim 5
Dependent Claim
192 words
A composition according to claim 5 wherein the detergent composition is a heavy duty built synthetic anionic-nonionic detergent composition in particulate form comprising from 5 to 30 percent of a synthetic anionic organic detergent or mixture thereof selected from the group consisting of linear higher alkyl benzene sulfonates, higher fatty alcohol sulfates, higher olefin sulfonates, and higher fatty acid soaps, from 1 to 10 percent of a nonionic detergent or mixture selected from the group consisting of ethylene oxide condensates with higher aliphatic alcohols, ethylene oxide condensates with middle alkyl phenols and ethylene oxide condensates with propylene oxide and propylene glycol, with the proportion of nonionic being less than one-half the proportion of anionic detergent present, and 30 to 95 percent of builder or builder mixture selected from the group consisting of pentasodium tripolyphosphate, trisodium nitrilotriacetate, sodium silicate, sodium carbonate, sodium citrate and sodium gluconate, the detergent composition being a spray dried particulate product substantially white in color or of a color different from that imparted to fabrics washed with the detergent, the particles of detergent being globular in shape and of sizes substantially within the range of 6 to 160 mesh.
Claim 6
Dependent Claim
196 words
A composition according to claim 6 wherein the anionic detergent is a sodium salt of a higher linear tridecyl benzene sulfonic acid and comprises from 7 to 15 percent of the product, the nonionic detergent, from 1 to 4 percent of the product, is a condensation product of a higher fatty alcohol of 10 to 18 carbon atoms with ethylene oxide, with the proportion of higher fatty alcohol to ethylene oxide, on a molar basis, being from 1:8 to 1: 14, the builder includes from 25 to 35 percent of pentasodium tripolyphosphate and 5 to 10 percent of sodium silicate of an Na2O:SiO2 ratio of from 1:2 to 1:3, the fluorescent brightener is a mixture of brighteners intended for use on cotton and synthetic fabrics, the proportion of greenish blue dye is from 0.001 to 0.003 percent and the proportion of reddish blue dye is from 0.0003 to 0.001 percent, the composition contains from 25 to 50 percent of sodium sulfate and the particle sizes are such that no particles are larger than the opening of a No. 8 U.S. Standard Sieve Series sieve and no more than 10 percent pass through a No. 100 sieve.
Claim 7
Independent Claim
367 words
A methoD of making a synthetic organic detergent composition for increasing the whiteness of fabrics which comprises making an alkaline crutcher mix containing from 30 to 70 percent of normally solid materials capable of being spray dried and less than 0.01 percent of a mixture of compatible blue dyestuffs in an aqueous medium and drying the described composition to solid particles in the 6 to 160 mesh range which are substantially white in color or of a color different from that of the blue dyestuffs, said solid particles comprising 5 to 85 percent, based on the weight of the dried composition, of a synthetic organic detergent or mixture of such detergents selected from the group consisting of anionic, nonionic and amphoteric detergents and 15 to 95 percent, based on the weight of the dried composition, of compounds selected from the group consisting of builder(s), filler(s), and adjuvant(s), and said dyestuffs being water soluble dyes of such different shades as to independently color fabrics washed therewith greenish blue and reddish blue, respectively, each of which dyes is substantially bleachable with aqueous hypochlorite bleach and contains in its structure a plurality of nuclear radicals selected from the group consisting of substituted and unsubstituted cyclohexyl, phenyl, naphthyl, anthracenyl and anthraquinonyl, at least one of which is substituted with a sulfonic acid or metal sulfonate group and at least one of which is linked to another nuclear radical of the described class by an azo or amino group, the remaining linking groups between nuclear radicals of the described group being selected from the group consisting of amino, azo, -NHSO2- and direct carbon to carbon bond, said dyes being substantive to fabrics and of substantially the same substantivity to cotton, said dye mixture being present in an amount to constitute from 0.0005 to 0.01 percent of the dried composition with the ratio of dyes within the dye mixture being within the range of 1:5 to 5:1, which proportion is such as to produce a fabric which, after washing in aqueous medium with said dried composition, is of an improved whiteness and a slightly blue tint, which tint is bluer than the color of fabrics washed with the composition absent the dye 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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |