...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7365113 | Phosphate ester flame retardants from resorcinol-ketone reaction products Flavan-based and spirodichroman compound-based phosphate esters prepared by reacting flavans and spirodichroman compounds with phosphorus oxychloride, monophenyl dichlorophosphate, or diphenyl chlorophosphate compounds are described. The flavans and spirodichroman c... | 04/29/2008 |
| 7282066 | Processes for preparing and using tanning agents and preservatives A process for the preparation of aqueous formulations, and aqueous formulations so prepared, the process comprising heating at least one cyclic compound of the formula I in the presence of water and of an acidic ... | 10/16/2007 |
| 6858730 | Process for the production of high purity melamine from urea A method for purifying melamine comprising impurities like ureido-melamine, oxotriazines, melam, melem, comprises the step of putting into contact at a temperature comprised between 340° C. and 410° C. and at a pressure comprised between 8 and 17 MPa a melamine me... | 02/22/2005 |
| 6713042 | Ascorbic acid analogs for metalloradiopharmaceuticals The invention relates to the use of ascorbic acid analogs as buffering reagents and chelating agents for the preparation of metalloradiopharmaceuticals. Also, invention relates to the use of ascorbic acid as a buffering reagent, a chelating agent, and a stabilizer f... | 03/30/2004 |
| 6583174 | Composition and method for stabilizing the same Disclosed is a novel composition comprising a novel bi-cyclic compound, which is expected to be pharmaceutically active, and a glyceride. The stability of the bi-cyclic compound can be improved significantly by dissolving the same in a glyceride.... | 06/24/2003 |
| 6518339 | Aldehyde emission reduction for dibenzylidene sorbitol clarified plastics An additive that is used in conjunction with certain dibenzylidene sorbitol-type (DBS) clarifiers and acid scavengers within polyolefin resins to reduce the release of aldehydes from polypropylene material is disclosed. Hydrazides have been shown to be ef... | 02/11/2003 |
| 6403811 | Recovery of chroman derivatives A process for recovering a concentrate of chromans from a distillate containing chromans is provided comprising the steps of: (1) forming chroman phosphates in the distillate; (2) subjecting the distillate to shearing forces, in the presence of a gas of f... | 06/11/2002 |
| 5852159 | Plastic with reduced sulfur uptake rate The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting of I: oligomerized 2,2,4,4-tetramethyl-20(oxiranylmethyl)-7-oxa-... | 12/22/1998 |
| 5831102 | Chemiluminescent 3-(substituted adamant-2'-ylidene) 1,2-dioxetanes Enzymatically cleavable chemiluminescent 1,2-dioxetane compounds capable of producing light energy when decomposed, substantially stable at room temperature before a bond by which an enzymatically cleavable labile substituent thereof is intentionally clea... | 11/03/1998 |
| 5260310 | Oxetanone compounds and pharmaceutical compositions containing them Novel compounds of the formula ##STR1## wherein Q, R1 and R2 are described herein, are disclosed along with pharmaceutical compositions, methods of use, and process for producing compounds of formula I which starts from the corr... | 11/09/1993 |
| 5241080 | Process for stabilizing dibenzylidenesorbitols and composition thereof A process for stabilizing dibenzylidenesorbitols comprising incorporating 0.05-20 pts. wt. sorbic acid and/or potassium sorbate in 100 pts. wt. dibenzylidenesorbitol represented by the following formula, ##STR1## and a stabilized dibenzylidenesorbito... | 08/31/1993 |
| 5026875 | Stability-improved trioxane composition Disclosed is a composition comprising 1,3,5-trioxane, and more particularly a stability-improved trioxane composition.... | 06/25/1991 |
| 4814428 | Method of increasing the thermal stability of cyclic carbonate oligomers The thermal stability of cyclic carbonate oligomers may be increased by treating a solution of the oligomers with an effective amount of a hydrogen halide.... | 03/21/1989 |
| 4634773 | Thiazolidinylethylchlorocarbonates This invention relates to 2-(thiazolidin-2'-yl) ethylchlorocarbonates useful as intermediates in the synthesis of photographic image dye-providing materials and to their preparation by the reaction of the appropriate 2-(2'-hydroxyethyl)-thiazolidine with ... | 01/06/1987 |
| 4448977 | Stabilized acetal-acid compositions A storage stable composition of glutaraldehyde acetals and an organic acidic catalyst, which can be converted to glutaraldehyde at the site and upon demand, by the addition of water.... | 05/15/1984 |
| 4377712 | Preparation of meta-substituted diaryl ethers A process for the preparation of meta-substituted diaryl ethers comprises reacting an ortho-haloaryl compound with a phenol compound in a non-aqueous medium in the presence of an alkaline metal base. In a specific embodiment m-phenoxytoluene is prepared b... | 03/22/1983 |
| 4185019 | Process for preparing 4-phenyl-1,3-dioxane A process for preparing 4-phenyl-1,3-dioxane from styrene and formaldehyde using a simplified method for working up the reaction mixture is disclosed, which comprises reacting styrene with an aqueous formaldehyde solution in the presence of an acidic cata... | 01/22/1980 |
| 4125540 | Process for stabilizing trioxane A process for stabilizing trioxane, characterized by adding thereto a specific trivalent organic phosphorus compound is disclosed.... | 11/14/1978 |
| 4075229 | Process for stabilizing metaldehyde and stabilized composition Process for stabilizing metaldehyde which involves mixing the metaldehyde and 0.005 to 5 percent by weight, based on the weight of the metaldehyde, of an inorganic base or organic base having a pK number of 6.5 to 12.5. The inorganic base or the organic b... | 02/21/1978 |