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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6821649 | Organic EL device and preparation method In an organic EL device comprising a cathode, an anode, and two or more stacked organic layers therebetween including a light emitting layer, an electron injecting organic layer containing an organic salt or complex of a metal having a standard electrode potential o... | 11/23/2004 |
| 6391065 | UV light absorber composition and method of improving the lightfastness of dyed textiles A water-dilutable UV light absorber composition and method for improving the lightfastness of dyed textiles is provided. The composition includes from about 5-75% by weight of an ultraviolet light absorbing agent selected from the group consisting of benz... | 05/21/2002 |
| 6274065 | Process for the preparation of fluorescent compositions, fluorescent compositions and their use Preparation of a solid fluorescent composition comprising (1) mixing a host chromophore and an effective amount of a pigment precursor in a solvent, then generating a pigment as guest chromophore in-situ from the pigment precursor, and, subsequently, isolating... | 08/14/2001 |
| 6120704 | Mixtures of optical brighteners The invention relates to mixtures of optical brighteners comprising nonionic polyester brighteners and anionic or nonionic polyamide brighteners, which develop a synergistic effect. The brighteners of the invention are suitable for polyamide and polyureth... | 09/19/2000 |
| 6117189 | Protective method The present invention relates to a method for the improvement of the sun protection factor (SPF) of textile fiber material, comprising applying to the textile fiber material a detergent comprising at least one fluorescent whitening agent, which absorbs ra... | 09/12/2000 |
| 5810889 | Aqueous textile treatment compositions containing an ultra-violet absorbing agent The present invention provides an aqueous textile treatment composition comprising: a) a non-reactive UVA compound; b) an emulsifier for the UVA compound; c) water, and, optionally, d) a polysiloxane-based product; as well as a method of treating a textile fibre ma... | 09/22/1998 |
| 5695687 | Anhydrous fluorescent whitening agent formulation The present invention provides an anhydrous fluorescent whitening agent formulation comprising: a) 5 to 60, preferably 15 to 45% by weight of a fluorescent whitening agent or a mixture thereof; b) 0 to 10, preferably 0 to 2% by weight of a stabiliser or a mixt... | 12/09/1997 |
| 5152922 | 1,4-distyrylbenzene compounds and mixtures thereof with other 1,4-distyrybenzene compounds Novel 1,4-distyrylbenzene compounds of the formula ##STR1## and mixtures thereof with compounds of the formulae ##STR2## and/or ##STR3## in which R1 is C1 -C4 -alkyl or phenyl, R2 is cyano, C... | 10/06/1992 |
| 4978475 | Stable liquid detergents containing anionic surfactant and monosulfonated brightener Stable isotropic liquid laundry detergents containing anionic surfactant and monosulfonated brightener to reduce brightener staining of fabrics. Monosulfonated naphthotriazolyl stilbene brighteners are preferred.... | 12/18/1990 |
| 4970029 | Stable liquid detergent containing anionic surfactant and monosulfonated brightener Stable isotropic liquid laundry detergents containing anionic surfactant and monosulfonated brightener to reduce brightener staining of fabrics. Monosulfonated naphthotriazolyl stilbene brighteners are preferred.... | 11/13/1990 |
| 4888128 | Paper-coating slips containing fluorescent brighteners Fluorescent brightener salts of the formula ##STR1## in which A denotes the anion of an anionic cellulose fluorescent brightener, R1 denotes alkyl, alkenyl, aralkyl, aryl or cycloalkyl, R2, R3 and R4 denote hydr... | 12/19/1989 |
| 4460374 | Stable composition for treating textile substrates The invention relates to a stable composition for treating textile substrates which contains at least (a) an organic solvent which is sparingly soluble to insoluble in water and in which component (b) is dissolved and component (c) is dissolved or dispers... | 07/17/1984 |
| 4447350 | Mixtures of optical brighteners and their use Mixtures of optical brighteners consisting of 1 to 60% by weight of a brightener from the bisbenzoxazolylnaphthalene series and 99 to 40% by weight of one or more brighteners of the formulae 2 to 10 listed in the description.... | 05/08/1984 |
| 4426530 | Triazolylcoumarin compounds, and their preparation and use as optical brighteners, scintillators and laser dyestuffs Optical brighteners of the formula ##STR1## wherein B denotes a direct bond or the 1,4-phenylene radical and R1 and R2 independently of one another denote hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl, or togeth... | 01/17/1984 |
| 4388079 | Color salt-containing optical brightener composition This invention relates to an optical brightener composition comprising at least one optical brightener and at least one color salt consisting of an optical brightener component having at least one anionic group and a color component having at least one ba... | 06/14/1983 |
| 4374643 | Color salts of basic dyes with acidic optical brighteners of stilbene type This invention relates to a novel color salt or color complex consisting of an optical brightener component having at least one anionic group and a color component having at least one basic group capable of forming a salt with the anionic group. This colo... | 02/22/1983 |
| 4330427 | Mixtures of optical brighteners Mixtures of optical brighteners consisting of 5 to 95 parts by weight of a mixture consisting of 0 to 80% by weight of the compound of the formula 1 ##STR1## 20 to 100% by weight of the compound of the formula 2 ##STR2## and 0 to 80% by weight o... | 05/18/1982 |
| 4326066 | Triazolyl coumarin compounds, processes for their preparation and their use as whiteners and laser dyestuffs Coumarin compounds of the formula ##STR1## in which the substituents have the meanings given in the description, are valuable whiteners for natural fibre materials, such as wool, or synthetic polycondensates. They can also be used as scintillators and ... | 04/20/1982 |
| 4304569 | Formulation for brightening synthetic fibers and its preparation and use The formulation for brightening synthetic fibers or mixtures of synthetic fibers and natural fibers, which is an aqueous dispersion comprising at least one finely divided optical brightener and a dispersing agent, wherein the improvement comprises the dis... | 12/08/1981 |
| 4284787 | Process for the preparation of 1,2,3-triazoles substituted in the 2-position Triazoles of the formula ##STR1## in which R1 is hydrogen or a substituent of the type indicated in the description, R2 is a substituent, or R1 and R2, together with the triazole ring carbon atoms to which ... | 08/18/1981 |
| 4283197 | Process for whitening polyester fibres by the exhaust method A process for whitening polyester fibres with a fluorescent whitening agent for polyester and a shading dye by the exhaust method, said process being carried out in a dispersion of the fluorescent whitening agent having a pH value above 9, preferably betw... | 08/11/1981 |
| 4271293 | Benzofuranyl-benzimidazoles Compounds of the formula ##STR1## in which R1 denotes aryl, alkyl, aralkyl, styryl or alkoxy, R2 denotes hydrogen, cyano, carboxyl or alkoxycarbonyl, inter alia, R3, R4, R6 and R7 denote hydroge... | 06/02/1981 |
| 4256900 | Fluorescent azolyl benzocoumarin dyestuffs Compounds of the formula ##STR1## wherein A represents N or C-Cl, and, in the case where A.dbd.N, their quaternization products of the formula ##STR2## in which R represents an alkyl, cycloalkyl or aralkyl radical and X denotes an inorganic or o... | 03/17/1981 |
| 4229579 | 3-(Halopyrazolyl)-7-triazolyl-coumarin compounds Coumarine compounds of the formula ##STR1## in which R1 and R2 denote hydrogen, alkyl, cycloalkyl, aralkyl, aryl, nitrile, carboxyl, carboxylic acid ester or carboxylic acid amide groups, or together form a nonaromatic 5-membere... | 10/21/1980 |
| 4167626 | Triazolyl stilbene triazoles Disclosed are compounds of formula I, ##STR1## in which X signifies hydrogen, C1-4 alkyl, cyano, --COOM, --COOR1, --CONR2 R3, --SO2 NR2 R3, --SO2 R1, -... | 09/11/1979 |
| 4146500 | Triazole compounds New triazole compounds of formula ##STR1## wherein R1 represents alkyl of 1 to 6 carbon atoms, R2 represents alkyl of 1 to 6 carbon atoms or phenyl which is unsubstituted or substituted by halogen, alkyl of 1 to 4 carbon atoms o... | 03/27/1979 |
| 4144243 | 3-Pyrozolyl-4-triazolyl compounds Coumarine compounds of the formula ##STR1## IN WHICH R1 and R2 denote hydrogen, alkyl, cycloalkyl, aralkyl, aryl, nitrile, carboxyl, carboxylic acid ester or carboxylic acid amide groups, or together form a nonaromatic 5-membere... | 03/13/1979 |
| 4141900 | 3-Phenyl-7-(v-triazol-2-yl)-coumarins Novel 3-phenyl-7-(v-triazol-2-yl)-coumarins of the formula ##STR1## wherein R represents hydrogen, unsubstituted or substituted alkyl, alkenyl, alkanyol, aroyl, aralkyl, alkoxycarbonyl, carbamoyl or v-epoxyalkyl, the rings A, B and C being optionally... | 02/27/1979 |
| 4113937 | Stilbene compounds Novel stilbene compounds of the formula ##STR1## in which R1 and R2 independently of one another are hydrogen or chlorine and A is a mono-nuclear or poly-nuclear aromatic heterocyclic structure which contains oxygen atoms or oxy... | 09/12/1978 |
| 4113938 | Stilbene compounds Novel stilbene compounds of the formula ##STR1## in which R1 and R2 independently of one another are hydrogen or chlorine and A is a mono-nuclear or poly-nuclear aromatic heterocyclic structure which contains oxygen atoms or oxy... | 09/12/1978 |
| 4061860 | Stilbene compounds Stilbene compounds of the formula ##STR1## wherein R denotes the radical ##STR2## and wherein the rings A, B, C, D and E can carry non-chromophoric substituents are useful for the optical brightening of organic materials.... | 12/06/1977 |
| 4060531 | Coumarin derivatives Coumarin compounds of the formula: ##STR1## in which R represents an alkyl group containing 1 to 5 carbon atoms, either unsubstituted or substituted by a non-ionic and non-chromophoric group, one of the substituents R1 or R2 rep... | 11/29/1977 |
| 4039531 | 4-Stilbenyl-1,2,3-triazoles, process for preparing them and their use as optical brighteners Compounds of the formula (I) ##STR1## in which R is hydrogen, triphenyl-methyl or lower alkyl, which may be substituted by lower carbalkoxy, carbonamido, mono- or dialkyl carbonamido, carboxy or benzoyl, Z is cyano, carbalkoxy, carbonamido or im... | 08/02/1977 |
| 4018789 | 5-Substituted-2-(2')-benzimidazoyl-furans Disclosed are optical brightening agents, such agents being 2-(2')-benzimidazoyl-furans substituted in the 5-position of the furan ring by a 1-aryl-pyrazolyl-3, -4 or -5 radical, by a pyrazolyl-1 radical or by a 2-aryl-v-triazolyl-4 radical, such compound... | 04/19/1977 |
| 4008172 | Agent for brightening and removing greyness from textiles Agent for the preparation of the baths for brightening the color of and removing the greyness from white and pastel colored textiles which are made from synthetic fibers or which are provided with an easy-care finish and are made from cotton or blends the... | 02/15/1977 |
| 4008248 | Process for the purification of coumarins Brighteners of the formula ##STR1## wherein R denotes hydrogen or an aliphatic or aromatic radical and Ar denotes an aromatic carbocyclic or heterocyclic radical, can be purified from colored by-products by dissolving in mineral acids and crystallize... | 02/15/1977 |
| 4006158 | Fluorescent 1,2,3-triazole derivatives of 3-phenylcoumarin Polyester, cotton, polyamide and polyacrylonitrile fabrics and foils of polyvinylchloride are optically brightened by the addition of a compound of the formula ##STR1## in which each of R1 and R2 represents a hydrogen atom or an... | 02/01/1977 |
| 4005098 | Triazolyl-coumarins Triazolyl-coumarins of the formula ##STR1## wherein R1 to R4 and X are as defined herein, or their quaternization products are useful as brightening agents.... | 01/25/1977 |
| 3968119 | Vic-triazole compounds Vic-triazole compounds of the formula ##SPC1## Wherein X and Y stand for O or NR, R1 stands for a mononuclear aromatically carbocyclic or aromatically heterocyclic radical, R stands for hydrogen, a (possibly substituted alkyl, aralkyl, cycloalkyl, ... | 07/06/1976 |
| 3966755 | Coumarin derivatives The present invention relates to new coumarine derivatives in which coumarine residues substituted in 7-position or 5,6-benzo-coumarine residues are further substituted in 3-position by optionally further substituted 2-phenyl-triazol-4-yl 2- or 1-phenyl-p... | 06/29/1976 |
