Patent application number | Description | Published |
20100331469 | PROCESS FOR MAKING POLYESTER NANOCOMPOSITES - A method for making polyester nanocomposite materials by polymerization in the presence of exfoliated fibrous clay nanoparticles includes dispersing the nanoparticles in a mixture of diol, water, and sodium salt before polymerization, thereby improving the dispersion of the nanoparticles in the final nanocomposite. This results in enhanced mechanical properties, such as modulus, in articles made from the nanocomposite. | 12-30-2010 |
20110009520 | DIMENSIONALLY STABLE, SHAPED ARTICLES COMPRISED OF DRIED, AGGREGATED, WATER-SWELLABLE HYDROGEL MICROSPHERES AND METHOD OF MAKING SAME - Dimensionally stable, shaped articles comprised of dried, aggregated, water-swellable hydrogel microspheres are described. The microspheres are aggregated together without the use of a binding agent. When exposed to an aqueous medium in a container, the dimensionally stable, shaped article swells slowly and disaggregates, forming at least partially swollen hydrogel microspheres, which take the shape of the container. The dimensionally stable, shaped articles disclosed herein have many potential applications, including medical applications such as a medical implant. | 01-13-2011 |
20110218316 | POLYESTER FILMS WITH IMPROVED OIL REPELLENCY - Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers. | 09-08-2011 |
20110218317 | POLYESTERS COMPRISING FLUOROVINYLETHER FUNCTIONALIZED AROMATIC MOIETIES - Disclosed are polyesters, particularly poly(trimethylene terephthalate), comprising fluorovinylether functionalized aromatic repeat units, and methods to make the polyester polymers. The polymers are useful for imparting soil resistance to polyesters, particularly in the form of fibers, fabrics, and carpets. | 09-08-2011 |
20110218353 | FLUOROVINYL ETHER FUNCTIONALIZED AROMATIC DIESTERS, DERIVATIVES THEREOF, AND PROCESS FOR THE PREPARATION THEREOF - Disclosed are fluorovinyl ether functionalized aromatic diesters and derivatives thereof. The compounds disclosed have utility as functionalized monomers and comonomers in polyesters, polyamides, and the like. It has been found that incorporation of the monomers into polymers provides improved soil resistance to shaped articles produced from the polymers. | 09-08-2011 |
20120029148 | POLYESTER NANOCOMPOSITES - Polyester nanocomposite compositions contain silica nanoparticles that have been subjected to surface treatment with novel trialkoxysilane compositions. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with 1,3-propanediol or certain polyether diols. The silica nanoparticles exhibit improved dispersion in the polyester. This leads to haze reduction and improvements in mechanical properties. | 02-02-2012 |
20120029221 | SILANE COMPOSITIONS FOR POLYESTER NANOCOMPOSITES - Novel silane compositions have been prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group. The alcohol or diol has a formula weight less than about 5000. The compositions can be used to modify the surfaces of inorganic oxygen-containing materials, including but not limited to silica, silicates, borosilicates, aluminosilicates, days, and metal oxides. | 02-02-2012 |
20120029222 | SURFACE-MODIFIED PARTICLES FOR POLYESTER NANOCOMPOSITES - Silica nanoparticles that have been subjected to surface treatment with novel silane compositions exhibit improved dispersion in polyester nanocomposites. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group, where the alcohol or diol has a formula weight less than about 5000. The surface treatment of the nanoparticles leads to improvements in mechanical properties and haze reduction in polyester nanocomposites containing them. | 02-02-2012 |