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Balduf
Torsten Balduf, Marl DE
| Patent application number | Description | Published |
|---|---|---|
| 20110028664 | SUPERABSORBENT POLYMER MADE FROM ACRYLIC ACID - The invention relates to a superabsorbent polymer that includes a (meth)acrylic acid made by a process that comprises the following process steps: a) (meth)acrylic acid is crystallized out from a mother liquor; b) crystallized (meth)acrylic acid is separated from the mother liquor; c) at least part of the separated (meth)acrylic acid crystals are melted; d) the melted part is at least partially recycled to the step a) or step b). The superabsorbent polymer according to the present invention includes an process to make (meth)acrylic acid, the apparatus suitable for implementing the process, and the use of the apparatus for the production of (meth)acrylic acid characterized by a high purity of the thereby obtainable (meth)acrylic acid as well as by a high efficiency with regard to the achievable yield and necessary energy requirement, thereby providing an improved superabsorbent polymer. | 02-03-2011 |
Torsten Balduf, Pfungstadt DE
| 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 |
| 20100120949 | USE OF A FEED COMPOSITIONS IN PREPARATION OF METHACRYLIC ACID BY OXIDATION - The invention relates to a process for production of at least one C | 05-13-2010 |
| 20100130648 | PROCESS FOR PREPARATION OF METHYL METHACRYLATE BY ESTERIFICATION DURING OXIDATION - The invention relates to a process for preparation of methacrylic acid, comprising the steps: a) providing a feed composition comprising a main compound selected from isobutylene and tert-butyl alcohol and at least one co-compound selected from the group consisting of methanol, dimethyl ether and formaldehyde; b) subjecting the feed composition provided in step a) with at least a first part of said at least one co-compound to a catalytic reaction zone and obtaining an oxidation phase comprising methyl methacrylate and methacrylic acid. The invention also relates a process for preparation of methyl methacrylate, further comprising the step of: c) esterification of at least a part of the oxidation phase obtained in step b), to an apparatus for preparation of methacrylic acid, to an apparatus for preparation of methyl methacrylate, to a process carried out in the apparatus, to methacrylic acid, to methyl methacrylate, to methacrylate esters, to a process for preparation of a polymer comprising at least one methacrylic acid, methyl methacrylate and/or methacrylate ester monomer unit, to a polymer comprising at least one methacrylic acid, methyl methacrylate and/or methacrylate ester monomer, to a process for preparation of a composition, to a composition, to chemical products, and to the use of at least one of methacrylic acid, methyl methacrylate, methacrylate ester, a polymer and/or a composition in chemical products. | 05-27-2010 |
| 20100144931 | PROCESS FOR PREPARATION OF METHYL METHARYLATE USING RECYCLED METHANOL - The invention relates to a process for production of methacrylic acid, to a process for production of methyl methacrylate comprising the process steps a) providing a feed composition comprising at least one C | 06-10-2010 |
Torsten Balduf, Houston, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090149562 | PURIFICATION OF A DISTILLED BOTTOM PRODUCT CONTAINING (METH)ACRYLIC ACID BY MEANS OF A CRYSTALLIZATION PROCESS - A process for the preparation of (meth)acrylic acid is disclosed that includes: | 06-11-2009 |