[특허]Method of forming microcapsules, microcapsular dispersion, and pressure sensitive recording sheet

Method of forming microcapsules, microcapsular dispersion, and pressure sensitive recording sheet 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-013/02 B32B-003/26
출원번호	US-0970593 (1978-12-18)
우선권정보	JP-0153430 (1977-12-20)
발명자 / 주소	Kakimi Fujio (Fujinomiya JPX) Hoshi Yoshiyuki (Fujinomiya JPX) Saeki Keiso (Fujinomiya JPX)
출원인 / 주소	Fuji Photo Film Co., Ltd. (Minami-ashigara JPX 03)
인용정보	피인용 횟수 : 20 인용 특허 : 2

초록 ▼

A method of forming microcapsules having high heat resistance and low permeability which comprises the step of forming wall films of urea-formaldehyde resin around individual droplets of a hydrophobic oily solution through the polymerization reaction of urea and formaldehyde in the presence of carbo

대표청구항 ▼

A method of forming microcapsules which comprises polymerizing a urea and formaldehyde resin capsule wall around individual droplets of a hydrophobic oily solution in the presence of carboxylated polyvinyl alcohol, wherein said carboxylated polyvinyl alcohol has a molecular weight of 1,000 to about 300,000, a saponification degree of 50% or more, a carboxy group content of 1 to about 40 mol %, and is present in the polymerization system in an amount of 0.5 to 10% by weight based on the weight of the system. A pressure sensitive recording sheet comprising a support having coated thereon a layer of microcapsules prepared by polymerizing a urea and formaldehyde resin around individual droplets of a hydrophobic oily solution in the presence of carboxylated polyvinyl alcohol wherein said carboxylated polyvinyl alcohol has a molecular weight of 1,000 to about 300,000, a saponification degree of 50% or more, a carboxy group content of 1 to about 40 mol%, and is present in the polymerization system in an amount of 0.5 to 10% by weight based on the weight of the system.

이 특허에 인용된 특허 (2)

Foris ; Peter L. ; Brown ; Robert W. ; Phillips ; Jr. ; Paul S., Capsule manufacture.
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Foris Peter L. (Appleton WI) Brown Robert W. (Appleton WI) Phillips ; Jr. Paul S. (Appleton WI), Capsule manufacture.
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이 특허를 인용한 특허 (20)

Redding ; Jr. Bruce K. (P.O. Box 66 Darby PA 19023), Apparatus and method for making microcapsules.
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Waycuilis, John J., Bromine-based method and system for converting gaseous alkanes to liquid hydrocarbons using electrolysis for bromine recovery.
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Kawamura Michio (Iyomishima JPX) Shimada Yasunori (Iyomishima JPX) Inoshita Koichi (Iyomishima JPX) Yoshida Shozo (Iyomishima JPX) Kawanabe Toshiaki (Iyomishima JPX) Hattori Haruo (Iyomishima JPX) Do, Method of producing a slurry of microcapsules.
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Iwasaki Hiroshi (Kawanishi JPX) Irii Shinsuke (Nishinomiya JPX), Microcapsules, method for their production and pressure sensitive copying sheet.
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Hart, Ronald L.; Work, Dale E.; Davis, Colin E., Microencapsulated epoxy adhesive system.
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Cuff George W. (Indianapolis IN) McGinity James W. (Austin TX), Microencapsulation process.
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Nastke Rudolf (Rehbrulke DEX) Leonhardt Andreas (Freiburg DEX) Neuenschwander Ernst (Riehen CHX), Pesticidal formulations.
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Waycuilis, John J, Process for converting gaseous alkanes to liquid hydrocarbons.
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Waycuilis, John J., Process for converting gaseous alkanes to liquid hydrocarbons.
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Egawa Setsuya (Oiso JPX) Masahiro Sakamoto (Oiso JPX), Process for producing microcapsules containing hydrophobic core material for carbonless duplicating sheets.
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Sinclair Peter (Gerrards Cross GB2), Process for the production of microcapsules.
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Waycuilis, John J.; Thomas, Raphael; Moore, Patrick K., Processes and systems for conversion of alkyl bromides to higher molecular weight hydrocarbons in circulating catalyst reactor-regenerator systems.
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Kurukchi, Sabah A.; Liu, Yijun; Moodley, Anand, Processes and systems for demethanization of brominated hydrocarbons.
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Kurukchi, Sabah A.; Liu, Yijun; Moodley, Anand, Processes and systems for drying liquid bromine.
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Kurukchi, Sabah A.; Liu, Yijun, Processes and systems for fractionation of brominated hydrocarbons in the conversion of natural gas to liquid hydrocarbons.
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Waycullis, John J.; Gadewar, Sagar B.; Thomas, Raphael, Processes and systems for separate, parallel methane and higher alkanes' bromination.
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Waycuilis, John J, Processes and systems for the staged synthesis of alkyl bromides.
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Waycuilis, John J.; Turner, William J., Processes and systems for the staged synthesis of alkyl bromides.
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Waycuilis, John J.; Turner, William J.; Thomas, Raphael, Processes for converting gaseous alkanes to liquid hydrocarbons.
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Brickey, Raymond T.; Lisewsky, Greg A.; Waycuilis, John J.; York, Stephen D., Processes for converting gaseous alkanes to liquid hydrocarbons using microchannel reactor.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Method of forming microcapsules, microcapsular dispersion, and pressure sensitive recording sheet 원문보기