|
Match
|
Document |
Document Title |
|
|
7501548 |
Oligomerization of isobutene-containing feedstocks
The invention relates to the use of isobutene-containing olefin feedstock in oligomerization reactions, particularly in the production of octenes as feedstock for the manufacture of plasticizer...
|
|
|
7323586 |
Phthalic acid alkyl ester mixtures with controlled viscosity
Mixtures of isomeric dialkyl phthalates that have a desired viscosity are prepared by esterifying phthalic acid or phthalic anhydride with a mixture of isomeric alkyl alcohols having a certain...
|
|
|
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...
|
|
|
7265238 |
Process for preparing methyl 4-(aminomethyl)benzoate
An advantageous process is provided for preparing methyl 4-(aminomethyl)benzoate by esterifying 4-(aminomethyl)benzoic acid and subsequently obtaining the methyl 4-(aminomethyl)benzoate, this...
|
|
|
7247742 |
Recycling polyethylene naphthalate containing materials in a process to produce diesters
A process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising directing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic...
|
|
|
7247740 |
Method for producing perfluoroalkane sulfonic acid esters and the salts thereof
The present invention relates to a process for the preparation of perfluoroalkanesulfonic acid esters and to the further conversion thereof into salts, and to the use of the resultant compounds in...
|
|
|
7045564 |
Flame retardants with high halogen content and low viscosity
A flame retardant formulation which is the combination of at least (1) at least one bromine-containing polyol flame retardant formed from the reaction of (a) tetrabromophthalic anhydride, (b) an...
|
|
|
7030264 |
Bis-β-hydroxyethyl terephthalate
Bis-β-hydroxyethyl terephthalate having an optical density measured in a 10 wt % methanol solution at a measurement wavelength of 380 nm and a cell optical path length of 10 mm of 0.000 to 0.006....
|
|
|
6921801 |
Method for preparing water-soluble acrylic copolymers
The invention concerns a method for preparing water-soluble acrylic copolymers comprising the following steps: (i) preparing at least a monomer (1) of formula (I) wherein Ao is a —(RtO) m Rz or...
|
|
|
6841505 |
Titanium-zirconium catalyst compositions and use thereof
A catalyst composition prepared from (a) titanium tetrahydrocarbyloxide, (b) zirconium tetrahydrocarbyloxide, and (c) tetraalkyl ammonium hydroxide, wherein the molar ratio of Zr:Ti is from about...
|
|
|
6812321 |
Method for the continuous production of polybutyleneterephthalate from terephthalic acid and butanediol
In a process for the continuous preparation of polybutylene terephthalate from terephthalic acid and 1,4-butanediol comprising: a) direct esterification of terephthalic acid with 1,4-butanediol in...
|
|
|
6710202 |
Process for production of high-purity bis-β-hydroxyethyl terephthalate
To provide a process for producing a high-purity bis-β-hydroxyethyl terephthalate from crude terephthalic acid. A process for producing high-purity bis-β-hydroxyethyl terephthalate by carrying...
|
|
|
6664413 |
Process for production of esters
A process for producing an ester comprises the steps of: (a) feeding to a first vessel a feed that comprises organic acid, alcohol, and water, whereby organic acid and alcohol react to form...
|
|
|
6630601 |
Methods for the preparation or purification of bis-β-hydroxyethyl terephthalate
An aromatic polyester is pre-decomposed by heating together with bis-β-hydroxyethyl terephthalate and/or a low condensate thereof and then, reacted with ethylene glycol to convert the terephthalic...
|
|
|
6533967 |
Initiating system for solid polyester granule manufacture
The invention relates to the use of a diacyl peroxide in combination with an aromatic amine of formula (I) where R 1 is C 1 -C 20 alkyl having at least one hydroxy substituent or...
|
|
|
6495710 |
Synthesis and use of dimethyl 1,5-naphthalenedicarboxlyates and intermediates therefrom
The synthesis of dimethyl-1,5-naphthalenedicarboxylate and polymers and articles formed therefrom is disclosed, as well as applications for dimethyl-1,5-naphthalenedicarboxylate, its corresponding...
|
|
|
6489493 |
Acyclic chiral derivatives of hibiscus acid and the process of preparing the same
The present invention relates to a novel acyclic chiral derivatives of Hibiscus acid of formula I, wherein: R 1 =R 5 =lower aryl or alkyl ester or substituted aryl or alkyl alcohol R 3...
|
|
|
6482972 |
Isomeric nonanols and decanols, their preparation, phthalic esters obtained therefrom and their use as plasticizers
Mixtures of isomeric nonanols and decanols are obtained by joint aldol condensation of n-butanal and pentanals, and up to 1% by weight of 3-methylbutanal, hydrogenation of the aldol condensation...
|
|
|
6448430 |
Process for the preparation of aryl carboxylate esters
Disclosed is a process for the preparation of aryl carboxylate esters by the reaction of a phenol reactant with a carboxylic acid in the presence of trifluoroacetic acid (TFA) and trifluoroacetic...
|
|
|
6355817 |
Optimized catalyst addition to enhance esterification catalyst performance
The present invention provides a process for the production of an ester, including reacting an alcohol with a carbonyl-like compound in the presence of a first esterification catalyst; and adding a...
|
|
|
6355702 |
Acyclic monomers which when cured are reworkable through thermal decomposition
Compounds containing unsaturated aliphatic moieties which are linked to each other by a tertiary oxycarbonyl containing acyclic moiety are basis for compositions which are cured to polymer networks...
|
|
|
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.
|
|
|
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...
|
|
|
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...
|
|
|
5866710 |
Esterification process
A process for the preparation of an ester comprises carrying out an esterification in the presence of a catalyst comprising the reaction product of an orthoester or a condensed orthoester of...
|
|
|
5750776 |
Production of dicarboxylic acids or esters thereof
Dicarboxylic acids or esters thereof are recovered from solid phase polyester materials, such as post-consumer products and factory scrap, by initially subjecting the polyester to a glycolysis...
|
|
|
5750711 |
Dicarboxylic acid derivatives
The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF 2 ) m , C(CF 3 ) 2 or CF 2 --CF(CF 3 ) (m=1 to 10), and R stems from...
|
|
|
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...
|
|
|
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...
|
|
|
5639859 |
Carboxylate protective groups, a process for their preparation, their coupling to a functional group, and their use
Carboxylate protective groups, a process for their preparation, their coupling to a funcitonal group, and their use Carboxylates of polar, hydrophilic alcohols of the formula ##STR1## in which R is...
|
|
|
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)...
|
|
|
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...
|
|
|
5481024 |
Process for the preparation of monomeric terephthalic diesters and diols from polyesters
The invention relates to a novel process for the preparation of terephthalic diesters and diols from polyesters. The process comprises depolymerization of the polyester in the presence of...
|
|
|
5461174 |
Method of reacting carboxylic chlorides dissolved in carboxylates
The invention relates to a method of reacting alkyl carboxylate chlorides and/or carboxylic dichlorides dissolved in corresponding diaikyl carboxylates with the corresponding alkanol at...
|
|
|
5455025 |
Non-aqueous emollient compositions for topical application
Non-aqueous compositions for topical application comprising one or more active ingredients and a fatty alkoxylate ester emollient agent comprising a diester or triester of an aliphatic or aromatic...
|
|
|
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):...
|
|
|
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...
|
|
|
5350874 |
Process for preparing diesters of naphthalenedicarboxylic acids
A continuous process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising passing a liquid phase reaction mixture comprising a low molecular weight alcohol, a...
|
|
|
5332859 |
Process for producing tetrabromophthalic diesters
Described is a batchwise process for producing tetrabromophthalic diester flame retardants having consistent product characteristics.
|
|
|
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...
|
|
|
5248727 |
Vinyl chloride polymer based moulding compositions with reduced fogging
Thermoplastic molding compositions of a vinyl chloride polymer and one or more emulsion polymers made with special emulsifiers have improved properties for technical application, such as reduced...
|
|
|
5194667 |
Fiber surface modifiers
This invention relates to fiber surface treating agnets containing a pyromellitate nucleus which have fungicidal, anti-microbial and anti-static properties, and blends of such agents with other...
|
|
|
5073570 |
Mono-iodopropargyl esters of dicarboxylic anhydrides and their use as antimicrobial agents
The new compositions of matter of the present invention comprise compounds having one of the following formulas: ##STR1## wherein: R is hydrogen or methyl; n is 1 to 16; R 1 and R 2 are...
|
|
|
5069828 |
Process for preparing benzenesulfonate salts
An improved process for preparing benzenesulfonate salts, such as 4-nonanoyloxybenzenesulfonic acid, sodium salt, from an appropriately substituted acid chloride or chloroformate and a...
|
|
|
5004569 |
Process for the production of carboxylic acid esters
The invention relates to a process for the production of carboxylic acid esters from carboxylic acids and alcohols which is characterized in that neutral phosphites containing oxetane groups are...
|
|
|
4950368 |
Method for paired electrochemical synthesis with simultaneous production of ethylene glycol
Paired electrochemical synthesis reactions in which ethylene glycol is formed at the cathode of a membrane divided cell at high concentrations and current efficiencies, up to 99 percent....
|
|
|
4885383 |
Process for the preparation of carboxylic acid methyl esters
A process for the preparation of methyl carboxylates by the reaction of mono or dicarboxylic acids having more than 5 carbon atoms and methanol in the presence of acidic catalysts at temperatures...
|
|
|
4845270 |
Propanone 1,3-disulfonic acid as an esterification catalyst
The present invention discloses the use of propanone 1,3-disulfonic acid as an esterification catalyst. This catalyst has a significantly higher reaction rate when compared to conventional...
|
|
|
4780542 |
Process for the synthesis of esters and amides of carboxylic acids
The invention relates to the preparation of an ester or an amide from an anhydride with an alcohol or an amine, wherein the anhydride is first prepared by reacting an acid and an alkyl...
|
|
|
4772743 |
Bifunctional emulsifiers based on perhydrobisphenols and carboxylic acid anhydrides
Reaction products of 1 mole 2,2-bis-(4-hydroxycyclohexyl)-propanes with 2 moles carboxylic acid anhydrides and their use as emulsifiers for emulsion polymerization.
|