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Kloppenburg
Heike Kloppenburg, Duesseldorf DE
| Patent application number | Description | Published |
|---|---|---|
| 20110230624 | NANOSTRUCTED POLYMERS ON THE BASIS OF CONJUGATED DIENES - The present invention relates to nano-structured diene polymers and their preparation and to their use. | 09-22-2011 |
| 20110251348 | MODIFIED POLYMERS ON THE BASIS OF CONJUGATED DIENES OR OF CONJUGATED DIENES AND VINYL AROMATIC COMPOUNDS, A METHOD FOR THE PRODUCTION THEREOF AND THE USE THEREOF - The present invention relates to polymers based on conjugated dienes or on conjugated dienes and vinylaromatic compounds, to a process for their preparation, and to their use. | 10-13-2011 |
Heike Kloppenburg, Dusseldorf DE
| Patent application number | Description | Published |
|---|---|---|
| 20110288193 | Method for Producing Moulded Parts Containing Polybutadiene - The present invention relates to a novel process for the production of polybutadiene-containing mouldings. | 11-24-2011 |
Lioba Maria Kloppenburg, Mount Vernon, IN US
| Patent application number | Description | Published |
|---|---|---|
| 20090247725 | Methods for Preparing Oxydiphthalic Anhydrides, Oxydiphthalic Anhydrides Prepared Thereby, and Polyetherimides Derived Therefrom - a method for preparing an oxydiphthalic anhydride comprises contacting, under reactive and substantially anhydrous conditions in a reactor, at least one halophthalic anhydride containing more than 250 ppm chlorophthalide impurity with a carbonate of the formula M | 10-01-2009 |
| 20090247727 | Method of Purifying Dianhydrides, the Dianhydrides Formed Thereby, and Polyetherimides Formed Therefrom - A method for purifying an oxydiphthalic anhydride comprises diluting a first mixture comprising an oxydiphthalic anhydride, a solvent, a catalyst, and an inorganic salt with a solvent, to provide a second mixture having a solids content of 10 to 30 percent based on total weight of the second mixture; filtering and washing the solids of the second mixture at a temperature below the crystallization point temperature of the oxydiphthalic anhydride to provide a third mixture; hydrolyzing the third mixture by adding water and a water-soluble acid to form a fourth mixture; heating the fourth mixture; then cooling to provide a solid-liquid mixture, optionally decanting a portion of the liquid, rediluting the remaining solid-liquid mixture, then filtering to provide a solid component; washing the solid component with water to provide a fifth mixture of oxydiphthalic tetraacid and water; ring closing the oxydiphthalic tetraacid to provide oxydiphthalic anhydride, and filtering the oxydiphthalic anhydride. | 10-01-2009 |
| 20100160578 | PROCESS FOR CONTROLLING REACTION STOICHIOMETRY DURING POLYMERIZATION OF THERMOPLASTIC RESINS - The present invention provides a process for measuring and controlling chemical reactions that produce thermoplastic polymers by utilizing a stoichiometry correction during a reaction cycle to produce thermoplastic resins with desired properties. The thermoplastic polymer is made from at least one first monomer having a first reactive end group and at least one second monomer having a second reactive end group by reaction of the first reactive end group with the second reactive end group and has a glass transition temperature of greater than 130° C. | 06-24-2010 |