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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0192628 (1998-11-16) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 2 인용 특허 : 475 |
One embodiment of the present invention is a method and composition comprising a novel pre-dye molecule that is colorless and stable to ordinary light. The pre-dye molecule is capable of forming a color when exposed to certain wavelengths of electromagnetic radiation. A second embodiment of the pres
One embodiment of the present invention is a method and composition comprising a novel pre-dye molecule that is colorless and stable to ordinary light. The pre-dye molecule is capable of forming a color when exposed to certain wavelengths of electromagnetic radiation. A second embodiment of the present invention is a method of converting a conventional leuco dye to a colored composition by exposing the leuco dye admixed with a radiation transorber to certain wavelengths of electromagnetic radiation.
[ We claim:] [1.] A mutable dye composition comprising (i) a leuco dye associated with a radiation transorber or (ii) a pre-dye comprising a dye covalently bonded to a radiation transorber; wherein the radiation transorber comprises a wavelength-selective sensitizer covalently bonded to a reactive s
[ We claim:] [1.] A mutable dye composition comprising (i) a leuco dye associated with a radiation transorber or (ii) a pre-dye comprising a dye covalently bonded to a radiation transorber; wherein the radiation transorber comprises a wavelength-selective sensitizer covalently bonded to a reactive species-generating photoreactor; and wherein the wavelength-selective sensitizer is phthaloylglycine having the following formula [ STR 35 ] or 4-(4-Hydroxy phenyl) butan-2-one having the following formula [ STR 36 ]
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