Patent application number | Description | Published |
20110105791 | PROCESS FOR PREPARING ACRYLIC ACID PURIFIED BY CRYSTALLIZATION FROM HYDROXYPROPIONIC ACID AND APPARATUS THEREFORE - The invention relates to a process for the preparation of acrylic acid and a process for the preparation of polyacrylic acid comprising the process steps: (a1) preparation of 3-hydroxypropionic acid from a biological material to give a fluid, in particular aqueous, phase containing 3-hydroxypropionic acid; (a2) dehydration of the 3-hydroxypropionic acid to give a fluid, in particular aqueous, solution containing acrylic acid; (a3) purification of the solution containing acrylic acid by a suspension crystallization or a layer crystallization to give a purified phase; and corresponding devices for carrying out these processes, and acrylic acid and polyacrylates. The invention is distinguished in that acrylic acid and polyacrylates can thereby be prepared efficiently, inexpensively, and sustainably with simple means and with a high purity on the basis of regenerable raw materials. | 05-05-2011 |
20110144294 | WATER-ABSORBING POLYMER STRUCTURES BASED ON RENEWABLE RAW MATERIALS AND PROCESS FOR THEIR PRODUCTION BY DEHYDRATION - The present invention relates to a process for production of acrylic acid, comprising at least the following steps:
| 06-16-2011 |
20110166304 | USE OF FOAM BODIES IN OXIDATION REACTORS FOR PREPARING UNSATURATED ALDEHYDES OR CARBOXYLIC ACIDS - The present invention relates to a process for preparing unsaturated aldehydes or unsaturated carboxylic acids by heterogeneous catalytic gas phase oxidation of unsaturated or saturated hydrocarbons, comprising the process steps of: i) providing a gas mixture comprising a saturated hydrocarbon and catalytically dehydrogenating the saturated hydrocarbon in the gas phase to obtain a gas mixture comprising an unsaturated hydrocarbon in a dehydrogenation reactor having a dehydrogenation catalyst material; or ii) providing a gas mixture comprising oxygen and an unsaturated hydrocarbon; iii) catalytically oxidizing the unsaturated hydrocarbon obtained in process step i) or provided in process step ii) in the gas phase to obtain a gas mixture comprising an unsaturated aldehyde in a first oxidation reactor having a first oxidation catalyst material; wherein at least one of the reactors selected from the dehydrogenation reactor, the first oxidation reactor and the second oxidation reactor comprises at least one foam body. | 07-07-2011 |
20120232233 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a | 09-13-2012 |
20130053522 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a1) provision of a fluid F1 having a composition comprising from about 5 to about 20 wt. % of hydroxypropionic acid, salts thereof, or mixtures thereof; from about 0.1 to about 5 wt. % of inorganic salts; from about 0.1 to about 30 wt. % of organic compounds which differ from hydroxypropionic acid; from 0 to about 50 wt. % of solids; and from about 20 to about 90 wt. % of water; (a2) dehydration of said hydroxypropionic acid to give a fluid F2 containing acrylic acid; and (a3) purification of said fluid F2 to give a purified acrylic acid phase comprising acrylic acid having a purity of at least 70 wt. %; and (II) polymerizing the acrylic acid of (I) to form a superabsorbent polymer. | 02-28-2013 |
20130253149 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a1) provision of a fluid F1 having a composition comprising from about 5 to about 20 wt. % of hydroxypropionic acid, salts thereof, or mixtures thereof; from about 0.1 to about 5 wt. % of inorganic salts; from about 0.1 to about 30 wt. % of organic compounds which differ from hydroxypropionic acid; from 0 to about 50 wt. % of solids; and from about 20 to about 90 wt. % of water; (a2) dehydration of said hydroxypropionic acid to give a fluid F2 containing acrylic acid; and (a3) purification of said fluid F2 to give a purified acrylic acid phase comprising acrylic acid having a purity of at least 70 wt. %; and (II) polymerizing the acrylic acid of (I) to form a superabsorbent polymer. | 09-26-2013 |
20140180234 | WATER-ABSORBENT POLYMER STRUCTURES BASED ON RENEWABLE RESOURCES AND METHOD FOR PRODUCING SAID STRUCTURES - The present invention relates to a process for the production of polymers, such as water-absorbing polymer structures, by radical polymerization of acrylic acid, whereby the acrylic acid has been obtained by a synthesis process which comprises as a process step the splitting of an organic material by means of an enzyme or at least one component of an enzyme. The invention also relates to the water-absorbing polymers obtainable by this process, water-absorbing polymers which are based to at least about 25 wt % upon partially neutralized acrylic acid, a composite, a process for the production of a composite, the composite obtainable by this production, the use of acrylic acid in the production of polymers, preferably in the production of water-absorbing polymer structures, a device for the production of acrylic acid, and a process for the production of acrylic acid. | 06-26-2014 |
Patent application number | Description | Published |
20080287616 | Process for Production of (Meth)Acrylic Acid with High Boiling Fraction Work-Up By Means of Crystallization - A process for production of (meth)acrylic acid is disclosed. The process includes synthesizing and distillatively working-up a crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase including (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers. At least a part of the (meth)acrylic acid dimers and/or of the (meth)acrylic acid oligomers from the dimer phase is split to obtain a (meth)acrylic acid including a low-boiling phase and a high-boiling phase including less (meth)acrylic acid than the low-boiling phase. At least a part of the (meth)acrylic acid from the low-boiling phase is separated by forming of one or more crystals to obtain a pure (meth)acrylic acid and a residue. Also disclosed is a device for production of (meth)acrylic acid, a process for production of a polymer as well as chemical products based on or including (meth)acrylic acid or a polymer as well as the use of (meth)acrylic acid or polymers in chemical products. | 11-20-2008 |
20090023006 | WATER-ABSORBENT POLYMER STRUCTURES BASED ON RENEWABLE RESOURCES AND METHOD FOR PRODUCING SAID STRUCTURES - The present invention relates to a process for the production of polymers, such as water-absorbing polymer structures, by radical polymerization of acrylic acid, whereby the acrylic acid has been obtained by a synthesis process which comprises as a process step the splitting of an organic material by means of an enzyme or at least one component of an enzyme. The invention also relates to the water-absorbing polymers obtainable by this process, water-absorbing polymers which are based to at least about 25 wt % upon partially neutralized acrylic acid, a composite, a process for the production of a composite, the composite obtainable by this production, the use of acrylic acid in the production of polymers, preferably in the production of water-absorbing polymer structures, a device for the production of acrylic acid, and a process for the production of acrylic acid. | 01-22-2009 |
20090068440 | PRODUCTION OF ACROLEIN, ACRYLIC ACID AND WATER-ABSORBENT POLYMER STRUCTURES MADE FROM GLYCERINE - The present invention relates to a process for the production of acrolein, comprising the following steps:
| 03-12-2009 |
20090134357 | ACRYLIC ACID, WATER-ABSORBENT POLYMER STRUCTURES BASED ON RENEWABLE RESOURCES AND METHOD FOR PRODUCING SAID STRUCTURES - The present invention relates to a process for production of acrylic acid, comprising at least the following steps:
| 05-28-2009 |
20090239995 | ACRYLIC ACID AND WATER-ABSORBING POLYMER STRUCTURES BASED ON RENEWABLE RAW MATERIALS AND PROCESS FOR THEIR PRODUCTION BY DEHYDRATION - The present invention relates to a process for production of acrylic acid, comprising the steps of a) dehydration of glycerine to an acrolein-comprising dehydration product; b) gas phase oxidation of the dehydration product to obtain an acrylic acid-comprising monomer gas; c) bringing into contact of the monomer gas with a quench agent to obtain an acrylic acid-comprising quench phase; and d) work-up of the quench phase to obtain an acrylic acid-comprising monomer phase; whereby, during the dehydration a liquid phase a | 09-24-2009 |
20120226003 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In some embodiments, a process for producing a polymer comprises (I) producing a pure (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers or (meth)acrylic acid oligomers or both; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer. | 09-06-2012 |
20130072645 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - The invention relates to producing a superabsorbent polymer comprising (I) producing a (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising a low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase by forming crystals to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer. | 03-21-2013 |
Patent application number | Description | Published |
20080250430 | METHOD AND CORRESPONDING APPARATUS FOR CREATION OF PRINT DRIVERS IN A NETWORK - Disclosed are methods of creating drivers for use in a network, the network including computers and devices, and corresponding apparatus and computer-readable medium. The methods include providing a platform, the platform including: 1) a plurality of selectable communication components, each communication component relating to a type of network communication associated with a type of device; 2) a plurality of selectable PDL components, each PDL component relating to a type of PDL associated with a type of device; 3) a user interface component, the user interface component having plurality of selectable user interface elements; 4) a plurality of selectable workflow components, each workflow component relating to a type of workflow to be associated with a device; and 5) a plurality of selectable vertical feature components; determining a type of the device for which the driver is to be created, the device being on the network; and based on the determined type of the device, selecting and activating one of the communication components, one of the PDL components, the user interface component, and one of the workflow components, and instantiating each of the selected components, thereby creating a driver suitable for the determined type of device on the network. | 10-09-2008 |
20120281251 | METHOD AND SYSTEM FOR CONFIGURING PRINTER DRIVERS FOR MULTIPLE PRINTING DEVICES - The disclosure relates to a computerized method and system for implementing a multi-tiered approach to defining printer driver configuration settings. A printer driver configuration management utility allows establishing settings for multiple printer drivers and multiple printing devices with a single multi-tiered configuration file. In a network environment the configuration file is stored in a location accessible by a client prior to utilizing a printer. A single multi-tiered configuration file makes it possible to pre-configure and post-configure multiple printer drivers. Compatible installed printer drivers check for the configuration file and update settings accordingly. Each setting may have rules of behavior such as a default value, enforced default value, value setting lock and disallowance of a value. An alternate value, such as a secondary value, can be deferred to when a primary setting value is not supported for a particular driver. | 11-08-2012 |
Patent application number | Description | Published |
20100199244 | Formal Verification Of Clock Domain Crossings - Methods and apparatus for performing automated formal clock domain crossing verification on a device are detailed. In various implementations of the invention, a device may be analyzed, wherein the clock domain crossing boundaries are identified. Subsequently, a formal clock domain crossing verification method may be applied to the identified clock domain crossing boundaries, resulting in clock domain crossing assertions being identified. After which the identified assertions may be promoted for post clock domain crossing analysis. With various implementations of the invention, a formal clock domain crossing method is provided, wherein the device components near an identified clock domain crossing are extracted. Assertions may then be synthesized and verified based upon the extracted components. Various implementations of the invention provide for clock domain crossing verification to be performed iteratively, wherein a larger and larger selection of the device is extracted during formal verification. Additionally, various implementations of the present invention provide that the clock domain crossing verification operate on the fly during a device verification procedure. With further implementations, a bit-blasted approach to clock domain crossing verification may be provided during formal verification. | 08-05-2010 |
20150026654 | Hierarchical Verification Of Clock Domain Crossings - The invention provides for the hierarchical verification of clock domain crossings. In various implementations of the invention, a device design is partitioned into blocks. Subsequently, a block level clock domain crossing verification process is performed on selected ones of the blocks. Verification interface files are generated by the block level clock domain crossing process. After which, a top level clock domain crossing verification process is performed over the entire design. In various implementations, the top level clock domain crossing verification process utilizes the verification interface files to verify clock domain crossing signals between blocks. Additionally, in some implementations, blocks not verified during block level verification are verified during top level verification. With some implementations of the invention, the device design is partitioned based input from a user of the implementation. Furthermore, in various implementations, the specific clock domain crossing verification checks employed during block level verification and top level verification are specified by a user of the implementation. | 01-22-2015 |