Patent application number | Description | Published |
20130273384 | Poly(Acrylic Acid) From Bio-Based Acrylic Acid And Its Derivatives - Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid. | 10-17-2013 |
20130274512 | Catalysts Conversion Of Hydroxypropionic Acid Or Its Derivatives To Acrylic Acid Or Its Derivatives - Methods for catalytically dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates. | 10-17-2013 |
20130274513 | Process For Production Of Acrylic Acid Or Its Derivatives From Hydroxypropionic Acid Or Its Derivatives - Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. | 10-17-2013 |
20130274515 | Process For Production Of Acrylic Acid Or Its Derivatives - Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. | 10-17-2013 |
20130274517 | Process For Production Of Acrylic Acid Or Its Derivatives - Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. The processes can be carried out either in a gas phase or in a liquid phase. | 10-17-2013 |
20130274518 | Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid - Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity. | 10-17-2013 |
20130274520 | Purification Of Bio Based Acrylic Acid To Crude And Glacial Acrylic Acid - Processes for the purification of bio-based acrylic acid to crude and glacial acrylic acid are provided. The bio-based acrylic acid is produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof. The purification includes some or all of the following processes: extraction, drying, distillation, and melt crystallization. The produced glacial or crude acrylic acid contains hydroxypropionic, hydroxypropionic acid derivatives, or mixtures thereof as an impurity. | 10-17-2013 |
20130274697 | Poly(Acrylic Acid) From Bio-Based Acrylic Acid And Its Derivatives - Bio-based glacial acrylic acid, produced from hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof and having impurities of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof, is polymerized to poly(acrylic acid) or superabsorbent polymer using the same processes as petroleum-derived glacial acrylic acid. | 10-17-2013 |
20150031912 | Process For Production Of Acrylic Acid Or Its Derivatives From Hydroxypropionic Acid Or Its Derivatives - Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. | 01-29-2015 |
20150031913 | Process For Production Of Acrylic Acid Or Its Derivatives From Hydroxypropionic Acid Or Its Derivatives - Processes for the catalytic dehydration of hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propanoic acid, and acetic acid, are provided. | 01-29-2015 |