摘要:
Provided is a novel fluorinated compound, a fluoropolymer, and a method for producing the compound. A monomer of the compound has a formula F2═CFCF2C(X)(C(O)OZ)(CH2)nCR═CHR, wherein X is a hydrogen atom, a cyano group, or a group of formula —C(O)OZ; Z is a hydrogen atom or a C1-20 monovalent organic group, n is 0, 1, or 2; and R is a hydrogen atom or a C1-20 monovalent organic group.
摘要:
A container comprising a closure means coated by an inert fluorinated material and containing a liquid pharmaceutical composition. In particular, the container comprises a closure means coated by TEFLON (polytetrafluoruethylene (PTFE)) and contains a HSA-free Interferon-β formulation having the following composition: 30 to 100 μg/ml of interferon-β, an isotonicity agent, 0.1 to 2 mg/ml of Poloxamer 188, at least 0.12 mg/ml of L-Methionine and a buffer solution capable of maintaining the pH of the liquid formulation at a value between 3.0 and 4.0.
摘要:
An object of the present invention is to provide a polymer having a low LUMO, a high charge transport property, and further high solubility in a solvent. The present invention provides a polymer having a repeating unit represented by the formula (I): wherein Ar0 means an aromatic ring that may have a substituent or substituents, or a heterocycle that may have a substituent or substituents, and X1 and X2 are the same or different and each mean an oxygen atom or a sulfur atom.
摘要:
A method for making a surface modified biomedical device is disclosed, the method comprising contacting a surface of a biomedical device with a copolymer which is the reaction product of one or more polymerizable polyhydric alcohols and one or more polymerizable fluorine-containing monomers.
摘要:
The present invention provides a method of producing a fluoropolymer, wherein polymerization using a carboxylate ester bond-containing carboxylic acid derivative as a surfactant in an aqueous medium to give the fluoropolymer is conducted, the above carboxylate ester bond-containing carboxylic acid derivative has a carboxylate ester bond and —COOM (M representing H, NH4, Li, Na or K), the above carboxylate ester bond may optionally be substituted by fluorine atom.
摘要:
A polymer comprising recurring units of formula (1) and having a solubility in alkaline developer which increases under the action of an alkaline developer is provided. The polymer has transparency to radiation of up to 200 nm and improved water repellency, water slip, acid lability and hydrolysis and is useful as an additive polymer to formulate a resist composition. R1 is H, F, methyl, or trifluoromethyl, R2 is a monovalent fluorinated hydrocarbon group, An is a (n+1)-valent hydrocarbon or fluorinated hydrocarbon group, and n is 1, 2 or 3.
摘要:
A fluororubber composition including a polyol-crosslinkable fluororubber; a cross-linking accelerator comprising a quaternary ammonium salt; and a polyol crosslinking agent; wherein the weight ratio X (quaternary ammonium salt/polyol crosslinking agent) between the cross-linking accelerator and the polyol crosslinking agent is in a range of 0.40 to 0.60; and a production method of a cross-linked fluororubber product, comprising the steps of: previously polyol-crosslinking, as required, the fluororubber composition; and subsequently heat treating the polyol-crosslinked composition, in a temperature range of 200° C. to 300° C. for 0.1 to 48 hours. The fluororubber composition has surface has a lower friction coefficient, and the surface roughness of the cross-linked fluororubber product can be increased without applying a treatment to a mold.
摘要:
A cell dispersion method, a cell dispersing agent and a cell measurement method, each of which can disperse a cell mass while reducing damage to a cell are provided. Upon dispersing a cell mass, a fluororesin particle is used. A cell mass composed of an aggregated of multiple cells is mixed with a fluororesin particle in a liquid medium, thereby separating the cell mass into individual cells to disperse the cells. In addition, the dispersed cells are measured by flow cytometry, thereby carrying out cell measurement.
摘要:
A monomer comprising vinylidene fluoride as a principal component is suspension-polymerized by supplying the monomer in division to a polymerization system containing a polymerization initiator at a pressure below a critical pressure Pcr (=4.38 MPa) of vinylidene fluoride and at a pressure above Pcr. As a result, a vinylidene fluoride polymer having excellent high-temperature coloring resistance and with remarkably less elution of organic matter and ionic components is produced, without using a specific halogenated hydrocarbon and without incurring troublesome labor and cost for recovery thereof.
摘要:
The invention provides a TFE polymer capable of providing stretched materials excellent in membrane homogeneity. The present invention is related to a tetrafluoroethylene polymer having stretchability and non-melt-processability and having a standard specific gravity of 2.140 to 2.165, wherein, with regard to the heat-of-fusion curve obtained by subjecting the tetrafluoroethylene polymer in the form of an unbaked polymer to be measured having no history of being heated to a temperature of 300° C. or higher to differential scanning calorimetry at a programming rate of 2° C./minute, the ratio S2/S1 is not lower than 0.90.