Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8034970 | Method of making phthalic acid diesters Methods and systems for the production of phthalic acid diesters are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and mixing of a phthalic acid derivative with alcohol. The high shear device may all... | 10/11/2011 |
| 7772417 | Heterogeneous organotin catalysts Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: wherein Z is a spacer group; Y is an insoluble phenyl-group containing copolymer; R1 | 08/10/2010 |
| 7361779 | Low-melting mixtures of di-n-butyl and diisobutyl terephthalate Mixtures of terephthalate diesters having lowered freezing points and methods of making the terephthalic acid diesters. The method includes contacting a first alcohol, a second different alcohol and dimethyl terephthalate in the presence of a catalyst to thereby for... | 04/22/2008 |
| 7358385 | Bicyclo[4.3.0]nonane-3(4),7(8)-dicarboxylic acid and a process for its preparation The compound, bicyclo[4.3.0]nonane-3(4),7(8)-dicarboxylic acid and to a process for its preparation, wherein bicyclo[4.3.0]nona-3,7-diene is reacted with synthesis gas in an homogeneous organic phase in the presence of transition metal compounds of Group VIII of the... | 04/15/2008 |
| 7307183 | Process for producing tetrabromobenzoate esters A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterification of th... | 12/11/2007 |
| 7300966 | Method for producing blends of phthalic acid diesters, decanols and tridecanols A process is described for preparing mixtures of diesters of phthalic acid with decanols and tridecanols by reacting phthalic acid or a reactive derivative of phthalic acid with a mixture made from at least one decanol and at least one tridecanol. Mixtures ob... | 11/27/2007 |
| 7276621 | Production of di-(2-ethylhexyl) terephthalate Disclosed is a process for the preparation of di-(2-ethylhexyl) terephthalate by the esterification of terephthalic acid with 2-ethylhexanol at elevated temperature and pressure while the water of reaction is removed from the reaction mixture. ... | 10/02/2007 |
| 7183233 | Method for separating an esterification catalyst Process for removal of the esterification catalyst by separation from a crude plasticizer ester obtained by reacting a dicarboxylic acid with C8–C13 alcohols, by treating the crude ester with an aqueous alkali solution in the range from 10 to... | 02/27/2007 |
| 7081554 | Oxo process The Oxo Process that recycles its cobalt primarily as cobalt salt is improved by concentration of the cobalt salt solution from the demetalling section and the addition of a separation step for organic acid and water. This allows for a higher reuse of acid in the pr... | 07/25/2006 |
| 7081553 | Cobalt flash process The Cobalt Flash Process is modified by replacing formic acid with acetic acid as process acid. Efficiency using acetic acid as process acid is achieved by two improvements which may be added separately and independently: (1) separation of acetic acid and water from... | 07/25/2006 |
| 6989461 | Catalyst for asymmetric (transfer) hydrogenation Catalyst for the asymmetric (transfer) hydrogenation represented by the formula MLaXbSc, where M is a transition metal, to be chosen from rhodium and ruthenium, and X is a counter ion and S is a ligand, a ranges from 0.5 to 3 and b a... | 01/24/2006 |
| 6310235 | Method for producing ester plasticizers The invention relates to an improved method for producing ester plasticizers by reacting di- or polycarboxylic acids or their anhydrides with alcohols in the presence of metal catalysts.... | 10/30/2001 |
| 6211398 | Process for the preparation of dialkyl esters of naphthalenedicarboxylic acids Disclosed is a process for the production and purification of dialkyl naphthalenedicarboxylate compounds wherein a crude naphthalenediacarboxylic acid is esterified with an alkanol such as methanol to produce a crude esterification product comprising dial... | 04/03/2001 |
| 6100374 | Method of purifying crude naphthalenedicarboxlic acid and process for preparing polyethylene naphthalate The process for preparing polyethylene naphthalate according to the invention is intended to obtain polyethylene naphthalate having a low impurity content from naphthalenedicarboxylic acid containing impurities. This process comprises the steps of: mixing... | 08/08/2000 |
| 6028211 | Composition and method for reducing fouling in process equipment used for manufacturing aromatic materials Methods for reducing the fouling of process equipment used in the manufacture of aromatic compounds such as dimethyl-2,6-naphthalenedicarboxylate are disclosed. The methods require treating manufacturing process streams with a metal complexing agent. ... | 02/22/2000 |
| 5922900 | Process for producing carboxylic acid esters and catalysts therefor A process for producing carboxylic acid esters by the following steps: a) preparation of a reaction mixture containing an alcohol and a carboxylic acid and/or a carboxylic anhydride and/or a carboxylic acid ester and or a partially esterified carboxylic acid, ... | 07/13/1999 |
| 5880310 | Process for producing plasticizer esters Provided is a process for producing a plasticizer ester characterized by previously removing dissolved oxygen in a starting alcohol, and then subjecting an organic acid or its anhydride and the alcohol to an esterification reaction in the presence of an o... | 03/09/1999 |
| 5760265 | Process for preparation of an ester utilizing an esterifying catalyst The present invention provides a process for preparation of an ester comprising reacting a carboxylic acid and an alcohol in the presence of an esterific catalyst comprising at least one compound selected from the group consisting of halides, nitrates, ca... | 06/02/1998 |
| 5728323 | Process for preparing dialkyl tetrahalophthalates A process for the preparation of dialkyl tetrahalophthalates. A tetrahalophthalic anhydride or acid is dissolved in excess C1 -C18 alkanols. Residual sulfuric acid is removed by treatment with magnesium acetate or multiple water wash... | 03/17/1998 |
| 5719311 | Catalytic processes for esterification of carboxylic acids An improved process for the esterification of carboxylic acid and alcohols into carboxylic ester is disclosed. It comprises the steps of: (a) charging the esterification reactants into a fixed bed reactor under a predetermined reaction condition; and (b) ... | 02/17/1998 |
| 5710316 | Transesterification process for making allyl esters of aromatic carboxylic acids A transesterification process for making allyl esters of aromatic carboxylic acids from the corresponding alkyl esters and allylic alcohols is disclosed. The alkyl ester/allylic alcohol mixture is dried by distillation to less than about 200 ppm water bef... | 01/20/1998 |
| 5646331 | Process for working up residues from the raw ester distillation in the preparation of dimethyl terephthalate(DMT) A process for working up, by methanolysis, a residue fraction resulting from raw ester distillation in a DMT process is provided, the process involving: admixing the residue fraction with liquid or gaseous methanol, or both to give a reaction mixture; pro... | 07/08/1997 |
| 5571938 | Esterification process using a catalyst consisting of sand, stannous tin and aluminate The present invention provides for an esterification process comprising a catalyst source of stannous tin and an alkali metal aluminate. In one preferred embodiment the catalyst comprises about 92 parts sand, about 5 parts stannous oxalate, and about 3 pa... | 11/05/1996 |
| 5534652 | Preparation of plasticizer esters from phthalic anhydride residue A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anhydride residue stream and a mono-alcohol t... | 07/09/1996 |
| 5532405 | Preparation of plasticizer or polyol esters by the staged addition of the lower boiling point reactant A process for the esterification of acids or anhydrides with alcohols or a polyhydroxy compound wherein the lower boiling point reactant is added to the reaction vessel in stages such that it is present in an amount of at least about 5% of the stoichiomet... | 07/02/1996 |
| 5502240 | Esterification process using a titamium zeolite catalyst A liquid phase esterification process is described wherein the esterification catalyst is a titanium zeolite.... | 03/26/1996 |
| 5451687 | Process for producing O,O'-diacyltartaric anhydride and process for producing O,O'-diacyltartaric acid An industrial process for producing O,O'-diacyltartaric anhydride with high purity and high efficiency is disclosed. According to the process of the invention, a carboxylic acid of the formula (I): R1 COOH ... | 09/19/1995 |
| 5434294 | Method of making plasticizers A process for the titanate catalyzed preparation of plasticizers from polycarboxylic acids and alcohols which minimizes waste water and is energy efficient. The reaction product is treated with aqueous caustic and is then filtered using an absorbent mediu... | 07/18/1995 |
| 5324853 | Process for the production of plasticizer and polyolesters A process for the catalytic or non-catalytic esterification of acids or anhydrides with a mono-alcohol or a polyhydroxy compound which comprises the steps of adding the reagents to a reaction vessel to form a reaction mixture, and heating the reaction mix... | 06/28/1994 |
| 5245072 | Process for production of biodegradable esters This invention relates to processes for making biodegradable surfactant. The process comprises several steps including an optional step. The first step is directed to reacting olefins with ZSM-23 catalyst to form oligomers having the formula -(C3 | 09/14/1993 |
| 5208366 | High yield method for preparation of dialkyl esters of polyhaloaromatic acids An improved process is provided for the preparation of esters of polyhalophthalic acids, polyhalobenzoic acids, and polyhalophthalic anhydride useful as flame retardants for thermoplastic and thermosetting resins, which comprises the reaction of the above... | 05/04/1993 |
| 5138025 | Stabilized naphthalenedicarboxylic acid diesters A method for stabilizing molten diesters of naphthalenedicarboxylic acids and stabilized naphthalenedicarboxylic acid diester compositions are disclosed.... | 08/11/1992 |
| 5087730 | Method for producing a purified ester A method for producing an ester, which comprises reacting an organic acid or its anhydride with an alcohol in the presence of a catalyst of an organometallic compound, wherein an esterification reaction product containing the catalyst, is treated with a p... | 02/11/1992 |
| 5049697 | High yield method for preparation of dialkyl esters of polyhaloaromatic acids An improved process is provided for the preparation of esters of polyhalophthalic acids, polyhalobenzoic acids, and polyhalophthalic anhydride useful as flame retardants for thermoplastic and thermosetting resins, which comprises the reaction of the above... | 09/17/1991 |
| 5015759 | Process for increasing the direct esterification reaction rate of a diacid with a glycol A process for increasing the direct esterification reaction rate between a diacid and 1,4-butanediol and for directly esterifying greater than 95% of the acid ends of the diacid by mixing in any order the diacid, the 1,4-butanediol and a catalyst compound... | 05/14/1991 |
| 4868324 | Purification of diphenyl phthalates Crude diphenyl phthalates, including isomeric mixtures thereof which are prepared by reacting mixtures of isophthalic and terephthalic acids with phenol, preferably in the presence of an organotitanate, organozirconate, or organostannate catalyst, are pur... | 09/19/1989 |
| 4820862 | Process for the preparation of dimethyl terephthalate The yield of dimethyl terephthalate obtained by the oxidation of a mixture of p-xylene and methyl p-toluate, preferably with air, and esterification of the thus-produced acids is increased by utilizing a mixture of cobalt and manganese compounds as the ox... | 04/11/1989 |
| 4775497 | Esterification process with calcium hydroxyaryl phosphonate-organosilicon heterocycle catalyst system An esterification process particularly for the preparation of rosin esters, polyesters and polymeric esters wherein aliphatic or aromatic carboxylic acids are reacted with appropriate alcohols in the presence of catalytic amounts of a mixture of a calcium... | 10/04/1988 |
| 4767881 | Synthesis of diphenyl phthlates Diphenyl esters of aromatic carboxylic acids are prepared in the presence of an organozirconium catalyst.... | 08/30/1988 |
| 4754053 | Process for preparing alkyl tetrabromophthalates Bis(2-ethyl-1-hexyl) tetrabromophthalate produced by the reaction of tetrabromophthalic anhydride with 2-ethyl-1-hexanol in the presence of titanium isopropoxide catalyst may be purified by contacting the reaction mixture with sodium carbonate decahydrate... | 06/28/1988 |
