Color-stable brighteners for detergents
Patent 4263176 Issued on April 21, 1981. Estimated Expiration Date: 
November 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3655574 3726814 3846324 Novel crystalline forms of optical brighteners Bis-triazinyl-amino)-stilbene-disulfonic acid derivatives Patent #: 3951965 InventorsApplicationNo. 06/094830 filed on 11/16/1979US Classes:510/394, With nitrogen, oxygen, or sulfur containing optical brightener, ultraviolet absorber, antistatic, or fiber softening component252/301.23, Triazines252/301.34, Natural resin, cellulose, or derivatives containing252/301.35, Synthetic resin containing252/401, Amine, amide, azo, or nitrogen-base radical containing252/402, Sulphur organic compound containing252/403, Oxygen organic compound containing510/108, CLEANING COMPOSITIONS OR PROCESSES OF PREPARING (E.G., SODIUM BISULFATE COMPONENT, ETC.)510/307, With oxygen, nitrogen, or sulfur containing optical brightener510/324, With nitrogen, oxygen, or sulfur containing optical brightener510/453, Inorganic phosphorus containing component510/475, Synthetic polymer or natural rubber (other than polyether, such as polyethylene glycol, alkylene oxide condensation products, etc.)510/494, Nitrogen attached directly or indirectly to the sulfoxy group by nonionic bonding544/193.2, Plural triazine rings containing544/83TriazineExaminersPrimary: Albrecht, Dennis L.Attorney, Agent or FirmInternational ClassesC11D 3/40 (20060101)C11D 3/42 (20060101) D06L 3/12 (20060101) D06L 3/00 (20060101) Foreign Application Priority Data1978-11-21 DEAbstractBrighteners for detergents consisting of a mixture of 4,4'-bis-(2-morpholino-4-anilino-1,3,5-triazinylamino)-stilbene-2,2'-disul fonic acid-di-Na salt and from 5 to 50% by weight, calculated on said brightener, of another brightener of the formula ##STR1## in the above formula, M is an alkali metal cation, preferably sodium, X is a group of the formula --COR2 or --SO2 R3, R2 being C1 -C8 -alkyl and R3 being C1 -C5 -alkyl, C4 -C8 -cycloalkyl, phenyl or toluyl, Y is hydrogen or C1 -C5 -alkyl, A is C3 -C6 -alkylene, R1 is hydrogen, C1 -C5 -alkyl, C4 -C8 -cycloalkyl, or a group of the formula ##STR2## and Z is an anilino group, a chloroanilino group or a morpholino group. Said brightener mixtures are color-stable and do not show any green discoloration even after a prolonged storage in a moist atmosphere. |
| ||||||||||||||
