Patent application number | Description | Published |
20100008861 | WATER SOLUBLE QUANTUM DOTS - An economic, direct synthetic method for producing water soluble QDs that are ready for bioconjugation is provided. The method can produce aqueous QDs with emission wavelengths varying from 400 nm to 700 nm Highly luminescent metal sulfide (MS) QDs are produced via an aqueous synthesis route. MS QDs are capped with thiol-containing charged molecules in a single step. The resultant MS QDs exhibit the distinctive excitonic photoluminescence desired of QDs and can be fabricated to avoid undesirable broadband emissions at higher wavelengths. This provides a significant improvement over the present complex and expensive commercial processes for the production of QDs. The aqueous QDs are stable in biological fluids over a long period of time. In addition, nontoxic ZnS QDs have been produced with good photoluminescence properties by refluxing the ZnS QD suspensions over a period of time. | 01-14-2010 |
20110001092 | WATER SOLUBLE NANOCRYSTALLINE QUANTUM DOTS - An economic, direct synthetic method for producing water soluble QDs that are ready for bioconjugation is provided. The method can produce aqueous QDs with emission wavelengths varying from 400 nm to 700 nm. Highly luminescent metal sulfide (MS) QDs are produced via an aqueous synthesis route. MS QDs are capped with thiol-containing charged molecules in a single step. The resultant MS QDs exhibit the distinctive excitonic photoluminescence desired of QDs and can be fabricated to avoid undesirable broadband emissions at higher wavelengths. This provides a significant improvement over the present complex and expensive commercial processes for the production of QDs. The aqueous QDs are stable in biological fluids over a long period of time. In addition, nontoxic ZnS QDs have been produced with good photoluminescence properties by refluxing the ZnS QD suspensions over a period of time. | 01-06-2011 |
20110260109 | WATER SOLUBLE NANOCRYSTALLINE QUANTUM DOTS - An economic, direct synthetic method for producing water soluble QDs that are ready for bioconjugation is provided. The method can produce aqueous QDs with emission wavelengths varying from 400 nm to 700 nm. Highly luminescent metal sulfide (MS) QDs are produced via an aqueous synthesis route. MS QDs are capped with thiol-containing charged molecules in a single step. The resultant MS QDs exhibit the distinctive excitonic photoluminescence desired of QDs and can be fabricated to avoid undesirable broadband emissions at higher wavelengths. This provides a significant improvement over the present complex and expensive commercial processes for the production of QDs. The aqueous QDs are stable in biological fluids over a long period of time. In addition, nontoxic ZnS QDs have been produced with good photoluminescence properties by refluxing the ZnS QD suspensions over a period of time. | 10-27-2011 |
Patent application number | Description | Published |
20100029854 | THERMOPLASTIC POLYMER-BASED SOLID DISPERSIONS SUITABLE AS FILTER AIDS - Solid dispersions of thermoplastic polymers and a crosslinked water-insoluble polymer, which solid dispersions are suitable as filter aids, wherein the solid dispersions comprise 20 to 95% by weight of at least one thermoplastic polymer (component A) and 5 to 80% by weight of at least one crosslinked water-insoluble polymer selected from the group consisting of homopolymers of N-vinylformamide, N-vinylcaprolactam, N-vinylpiperidone, N-vinylpyridines, N-vinylimidazoles, styrene monomers, acrylates and methacrylates and also copolymers of basic N-vinyl compounds, styrene monomers, acrylates and methacrylates (component B). | 02-04-2010 |
20110306718 | PULTRUSION PROCESS - The present invention relates to an improved pultrusion process for producing semifinished products based on polymers, in particular polyesters or polyamides, which comprises adding reactive chain extenders during the process of saturation (impregnation) of the fibers. | 12-15-2011 |
20110319550 | THERMOPLASTIC MOLDING COMPOUNDS CONTAINING STYRENE COPOLYMERS AND POLYAMIDES - The thermoplastic molding composition comprises
| 12-29-2011 |
20120016090 | PROCESS FOR INCREASING THE MOLECULAR WEIGHT OF POLYESTERS - The present invention relates to a process for increasing the molecular weight of polyesters via heating, to from 160 to 350° C., in an extruder, of 100 parts of polyester with i) from 0.01 to 5 parts of a tetracarboxylic dianhydride and ii) from 0.01 to 5 parts of a copolymer which contains epoxy groups and which is based on styrene, acrylate, and/or methacrylate. | 01-19-2012 |
20120238676 | USE OF OLIGOMERIC CARBODIIMIDES AS STABILIZERS - Oligomeric carbodiimides comprising at least one heterocyclic end group are used as stabilizers for polymers. The oligomeric carbodiimides may be compounds of the general formula (I), | 09-20-2012 |
20130115402 | POLYESTER RESIN COMPOSITION AND A PROCESS FOR MANUFACTURING THE SAME - Co-polyester resin compositions and processes for manufacturing resin compositions are provided, said resin compositions being suitable for extrusion blow molding for the manufacture of containers with good color, clarity for both food, non-food applications and other applications such as profile extrusions and manufacture of blown films which require high melt strength polyester. | 05-09-2013 |
20130116374 | POLYMERS BASED ON GRAFTED POLYOLEFINS - The present invention relates to a polymer (P1) obtainable by reaction of at least one component a) with at least one component b), wherein
| 05-09-2013 |
20130131255 | ADDITIVES FOR STABILIZING POLYCONDENSATES WITH RESPECT TO HYDROLYSIS - A mixture comprising at least one polyfunctional chain extender having at least three reactive groups, and at least one mono- or difunctional hydrolysis stabilizer, where the chain extenders and the hydrolysis stabilizers react with the terminal groups of polymers in the molten or solid state of the polymers to form a chemical bond. Use of such mixtures as stabilizers for polymers. Methods for stabilizing polymers with respect to molecular weight loss, where an effective amount of such a mixture is added to the polymer. | 05-23-2013 |
20140243477 | ADDITIVES FOR STABILIZING POLYMERS WITH RESPECT TO HYDROLYSIS - Use of copolymers (C) comprising at least one epoxy group and at least one alkoxysilane group as stabilizers for polymers (P), where the copolymers (C) are generally obtained via polymerization of monomers and said monomers comprise those that comprise epoxy groups or alkoxysilane groups or epoxy groups and alkoxysilane groups, or that are reacted during or after polymerization and, after the reaction, comprise epoxy groups or alkoxysilane groups, or epoxy groups and alkoxysilane groups. Processes for stabilizing polymers (P) with respect to hydrolysis, which comprise adding, to the polymers (P), an effective amount of copolymers (C). Copolymers (C′) composed of specific compositions of monomers comprising at least one epoxy group and at least one alkoxysilane group, and also optionally other monomers. Mixtures comprising copolymers (C′) and polymers (P). | 08-28-2014 |