- ONIUM SALT COMPOUND, CHEMICALLY AMPLIFIED RESIST COMPOSITION AND PATTERNING METHOD
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PROBLEM TO BE SOLVED: To provide a chemically amplified resist composition that has high sensitivity in photolithography using, as a light source, high energy rays such as KrF excimer laser light, ArF excimer laser light, electron beams, extreme ultraviol
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Paragraph 0224-0225
(2021/06/21)
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- RESIST COMPOSITION AND PATTERNING PROCESS
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A resist composition comprising a base polymer and a quencher in the form of an amine compound having an iodized aromatic ring bonded to the nitrogen atom via a divalent hydrocarbon group offers a high sensitivity and minimal LWR or improved CDU, independ
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Paragraph 0204-0205
(2020/08/13)
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- IODINE-CONTAINING PHOTOACID GENERATORS AND COMPOSITIONS COMPRISING THE SAME
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A photoacid generator compound having formula (I): wherein, in formula (I), groups and variables are the same as described in the specification.
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Paragraph 0113
(2019/06/07)
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- RESIST COMPOSITION AND PATTERNING PROCESS
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A resist composition comprising a base polymer and an onium salt of N-carbonylsulfonamide having iodized benzene ring offers a high sensitivity, minimal LWR and improved CDU, independent of whether it is of positive or negative tone.
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Paragraph 0188-0189
(2019/12/25)
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- Radiopaque poly(ε-caprolactone) as additive for X-ray imaging of temporary implantable medical devices
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Implantable polymeric medical devices suffer from a lack of visibility under current clinical imaging techniques. To circumvent this problem, poly(ε-caprolactone-co-α-triiodobenzoate-ε-caprolactone)s (PCL-TIB) containing from 3.5% to 24% of triiodobenzoat
- Samuel, Rémi,Girard, Edouard,Chagnon, Grégory,Dejean, Stéphane,Favier, Denis,Coudane, Jean,Nottelet, Benjamin
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p. 84125 - 84133
(2015/10/28)
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- RADIOPAQUE POLYMERS FOR MEDICAL DEVICES
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Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a
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Paragraph 00141
(2014/08/20)
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- Organic radiographic contrasting agents for medical devices
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The present invention discloses an organic radiographic contrasting agent containing an aliphatic or alicyclic backbone and multiple halogen-substituted aromatic groups. Each of the halogen-substituted aromatic groups in the radiographic contrasting agent
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Page/Page column 5
(2008/06/13)
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- Synthesis and evaluation of potential CT (computer tomography) contrast agents for bone structure and microdamage analysis
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The design and synthesis of several novel X-ray contrast agents 1-3, developed for targeting bone structures, and in particularly microcracks in bones, using CT (Computer Tomography) detection is described. These contrast agents are based on the use of the well known triiodobenzene platform, which was conjugated into one or more phenyliminodiacetate moieties, which can be used to 'lock' onto bone matrices. Compounds 1-3 were all tested for their ability to visualise cracks in bone structures (bovine bones) using μ-CT imaging. The Royal Society of Chemistry 2006.
- Parkesh, Raman,Gowin, Wolfgang,Lee, T. Clive,Gunnlaugsson, Thorfinnur
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p. 3611 - 3617
(2008/09/19)
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- Synthesis and properties of radiopaque polymer hydrogels II: Copolymers of 2,4,6-triiodophenyl- or N-(3-carboxy-2,4,6-triiodophenyl)- acrylamide and p-styrene sulfonate
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In order to pursue a possibility of application of radiopaque polymer hydrogels to vascular embolization, studies were made on synthesis of iodine containing copolyanions and properties of their hydrogels with polycation via formation of polyion complexes (PIC). Acrylamide derivatives having triiodophenyl groups were synthesized and copolymerized with sodium styrene sulfonate (SS) under several conditions. It was found that N-(3-carboxy-2,4,6-triiodophenyl)-acrylamide (CIPA) and 2,4,6-triiodophenylacrylamide (TIPA) monomers are effectively copolymerized with SS, while N-allyl-2,3,5-triiodobenzamide (ATIBA) are hardly copolymerized. Hydrogels were prepared by mixing aqueous solutions of polyanions, i.e. the copolymers (PCIPA and PTIPA) and polyallylamine (PAAn). 13C NMR spectra of PCIPA/PAAn and PTIPA/PAAn hydrogels gave peaks for both polyanion and polycation. This means that there remained free anionic and cationic monomer units, which did not form ion pairs because of spatial hindrance. Time dependence of 1H T2 showed quick increment and plateau for PSS/PAAn and gradual increments for PCIPA/PAAn. Therefore, PIC containing the radiopaque copolymer retains the hydrogel state for a long time. Embolization was examined by injection of PCIPA/PAAn hydrogels into the vein of a removed porcine kidney as a preliminary test for transcatheter arterial embolization (TAE). X-ray radiograms of the embolized organ were reasonably explained based on the structure and mobility of hydrogels.
- Okamura, Masahiko,Yamanobe, Takeshi,Arai, Tomohiro,Uehara, Hiroki,Komoto, Tadashi,Hosoi, Seiichi,Kumazaki, Tatsuo
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- X-ray opaque dental materials
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X-ray opaque esters or amides of iodosubstituted benzoic acid according to formula I and polymers and dental materials produced therefrom. STR1 R1 =hydrogen or C1 to C3 alkyl, preferably H or CH3 ; R2 =straight-chain or branched C1 to C6 alkylene, oxyalkylene or arylene, preferably C2 to C4 alkylene and particularly preferably --CH2 --CH2 -- and --CH2 CH(--)CH2 --; X=O or NH, preferably O; R3 -R7 =at least 3 iodine substituents, preferably in R3, R4 and R6 or R3, R5 and R7 position, the other groups are hydrogen, C1 to C6 alkyl, C1 to C6 alkoxy, --Cl, --Br, --OH, --NH2, --N(C1 to C6 alkyl)2 or --NH--CO--(C1 to C6 alkyl), preferably R3, R4, and R6 are=I and R5 and R7 =H, or R3, R5 and R7 =I and R4 and R6 =--NH(COCH3); n=1, 2 or 3, preferably 1 or 2. The benzoic acid esters and amides according to the invention can be well polymerized radically or anionically, the polymers are well soluble in the usual dental monomers. Dental materials produced from the monomers or polymers are characterized in that the X-ray opaque component is bonded covalently into the polymeric matrix material and cannot therefore be washed out. Furthermore, excellent X-ray opacity can be achieved without using fillers.
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- Compositions of iodobenzoic acid derivatives and pharmaceutically acceptable clays for visualization of the gastrointestinal tract
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Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising iodobenzoic acid derivatives as the x-ray producing agents in combination with a pharmaceutically acceptable clay in a pharmaceutically acceptable carrier; and methods for their use in diagnostic radiology of the gastrointestinal tract.
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- Compositions of iodobenzoic acid derivatives for visualization of the gastrointestinal tract
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Disclosed are contrast agents of the formula STR1 contained in aqueous compositions and methods for their use in diagnostic radiology of the gastrointestinal tract wherein wherein Z=H, halo, C1 -C20 alkyl, cycloalkyl, lower alkoxy, c
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