| Patent application number | Description | Published |
|---|
| 20100280219 | OLIGOCARBONATE MOLECULAR TRANSPORTERS - A cyclic carbonate monomer, including: | 11-04-2010 |
| 20100316960 | PATTERNING NANO-SCALE PATTERNS ON A FILM COMPRISING UNZIPPING POLYMER CHAINS - The invention concerns a method for patterning a surface of a material. A substrate having a polymer film thereon is provided. The polymer is a selectively reactive polymer (e.g. thermodynamically unstable): it is able to unzip upon suitable stimulation. A probe is used to create patterns on the film. During the patterning, the film is locally stimulated for unzipping polymer chains. Hence, a basic idea is to provide a stimulus to the polymeric material, which in turn spontaneously decomposes e.g. into volatile constituents. For example, the film is thermally stimulated in order to break a single bond in a polymer chain, which is sufficient to trigger the decomposition of the entire polymer chain. | 12-16-2010 |
| 20100317838 | CYCLIC CARBONYL MONOMERS FUNCTIONALIZED WITH CARBOHYDRATES, POLYMERS DERIVED THEREFROM, AND METHODS OF PREPARATION THEREOF - A cyclic carbonyl monomer has the formula (7): | 12-16-2010 |
| 20110054064 | Hydrogel Compositions and Methods of Preparation Thereof - A block copolymer includes a hydrophobic block and a hydrophilic block, wherein the hydrophobic block and the hydrophilic block include repeating units derived from ring opening polymerization of one or more cyclic carbonate monomers. The one or more cyclic carbonate monomers are independently selected from compounds of the general formula (II): | 03-03-2011 |
| Patent application number | Description | Published |
|---|
| 20090100553 | SCANNING PROBE-BASED LITHOGRAPHY METHOD - A resist medium in which features are lithographically produced by scanning a surface of the medium with an AFM probe positioned in contact therewith. The resist medium comprises a substrate; and a polymer resist layer within which features are produced by mechanical action of the probe. The polymer contains thermally reversible crosslinkages. Also disclosed are methods that generally includes scanning a surface of the polymer resist layer with an AFM probe positioned in contact with the resist layer, wherein heating the probe and a squashing-type mechanical action of the probe produces features in the layer by thermally reversing the crosslinkages. | 04-16-2009 |
| 20100280242 | Method of Preparing Cyclic Carbonates, Cyclic Carbamates, Cyclic Ureas, Cyclic Thiocarbonates, Cyclic Thiocarbamates, and Cyclic Dithiocarbonates - A method of preparing a cyclic monomer, comprising: forming a first mixture comprising a precursor compound, bis(pentafluorophenyl) carbonate, and a catalyst; wherein the precursor compound has a structure comprising a) two or more carbons, and b) two functional groups selected from the group consisting of primary amine, secondary amine, thiol group, hydroxyl group, and combinations thereof; and agitating the first mixture at a temperature effective to form a second mixture comprising the cyclic monomer, the cyclic monomer selected from the group consisting of a cyclic carbonate, a cyclic carbamate, a cyclic urea, a cyclic thiocarbonate, a cyclic thiocarbamate, and a cyclic dithiocarbonate. | 11-04-2010 |
| 20100305281 | POLYMERS BEARING PENDANT PENTAFLUOROPHENYL ESTER GROUPS, AND METHODS OF SYNTHESIS AND FUNCTIONALIZATION THEREOF - A one pot method of preparing cyclic carbonyl compounds comprising an active pendant pentafluorophenyl ester group is disclosed. The cyclic carbonyl compounds can be polymerized by ring opening methods to form ROP polymers comprising repeat units comprising a side chain pentafluorophenyl ester group. Using a suitable nucleophile, the pendant pentafluorophenyl ester group can be selectively transformed into a variety of other functional groups before or after the ring opening polymerization. | 12-02-2010 |
| 20100305300 | Method of Ring-Opening Polymerization, and Related Compositions and Articles - Methods to form a polymer by ring-opening polymerization include reacting, a mixture comprising a monomer, an accelerator, an initiator, and a catalyst comprising a 1,1,1,3,3,3-hexafluoropropan-2-ol-2-yl group to form the polymer. Also disclosed are polymers including a residual amount of the catalyst in an amount greater than 0 weight percent. | 12-02-2010 |
| 20100311917 | METHODS FOR MAKING MULTI-BRANCHED POLYMERS - A method for making a multi-branched polymer includes reacting a first polymeric unit with a functional cyclic compound to form a functional macroinitiator compound with a cyclic moiety. The functional macroinitiator compound is reacted with an amine functional compound to open the cyclic moiety and form a first functional group and a second functional group. To form the branched polymer, at least one of a second polymeric unit is propagated from the first functional group and a third polymeric unit is propagated from the second functional group. | 12-09-2010 |
| 20110020533 | SCANNING PROBE-BASED LITHOGRAPHY METHOD - A resist medium in which features are lithographically produced by scanning a surface of the medium with an AFM probe positioned in contact therewith. The resist medium comprises a substrate; and a polymer resist layer within which features are produced by mechanical action of the probe. The polymer contains thermally reversible crosslinkages. Also disclosed are methods that generally includes scanning a surface of the polymer resist layer with an AFM probe positioned in contact with the resist layer, wherein heating the probe and a squashing-type mechanical action of the probe produces features in the layer by thermally reversing the crosslinkages. | 01-27-2011 |
