| Patent application number | Description | Published |
|---|
| 20090306290 | Biocompatible, Biodegradable, Water-Absorbent Hybrid Material - A biocompatible, biodegradable, macromolecular water-absorbent hybrid material (WAHM), having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups, said polymer being formed by polymer-polymer intercoupling reaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 300,000 Da, and a synthetic polymer B in an adequate ratio wherein the natural polymer A is selected from amphoteric reactants, partially denatured or chemically modified natural polymer, that dissociates in water to form both anions and cations, and which can undergo polymer-polymer intercoupling reactions, and wherein synthetic polymer B s a linear or branched reactive synthetic copolymer having a molecular weight of 50,000-500,000 Da derived from a vinyl monomer and an ethylenically unsaturated monomer, having a backbone with polymeric subunits covalently bonded to the polymer backbone, the subunits comprising ones with non-reactive and others with reactive chemical functional groups. | 12-10-2009 |
| 20090318649 | Styrene-Maleic Anhydride Copolymers for Bioapplications and Their Preparation - The present invention discloses styrene-maleic anhydride copolymers preparations using solventless techniques. The solventless method resulted in reduced amounts of residues, such as unreacted styrene and/or maleic anhydride monomers, which makes the copolymers particularly suitable for bioapplications. | 12-24-2009 |
| 20090324537 | Polymeric Materials as Stomach Filler and Their Preparation - The present invention relates to swellable polymeric materials comprising a synthetic polymer, or copolymer, comprising a carboxylic group and a biopolymer that are suitable for bioapplications. Because of their ability to swell, the polymeric materials are suitable for use as stomach fillers for the treatment of being over weight or obese, or for inducing the feeling of being satiated. Methods for preparing the swellable polymeric materials comprising aqueous reaction systems are also disclosed. | 12-31-2009 |
| 20110021729 | Methods of Purifying Poly(Styrene-co-Maleic Anhydride/Acid) - The present invention relates in part to poly(styrene-co-maleic anhydride/acid) copolymers having high purity, for example, having low amounts of maleic acid, maleic anhydride, and/or styrene. The present invention also relates in parts to methods of purifying poly(styrene-co-maleic anhydride/acid) copolymers to remove the residual monomers and low molecular weight fragments. | 01-27-2011 |
| 20110160398 | BIOCOMPATIBLE, BIODEGRADABLE, WATER-ABSORBENT HYBRID MATERIAL - A biocompatible, biodegradable, macromolecular water-absorbent hybrid material (WAHM), having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups, said polymer being formed by polymer-polymer intercoupling reaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 300,000 Da, and a synthetic polymer B in an adequate ratio wherein the natural polymer A is selected from amphoteric reactants, partially denatured or chemically modified natural polymer, that dissociates in water to form both anions and cations, and which can undergo polymer-polymer intercoupling reactions, and wherein synthetic polymer B is a linear or branched reactive synthetic copolymer having a molecular weight of 50,000-500,000 Da derived from a vinyl monomer and an ethylenically unsaturated monomer, having a backbone with polymeric subunits covalently bonded to the polymer backbone, the subunits comprising ones with non-reactive and others with reactive chemical functional groups. | 06-30-2011 |
