[특허]Process for microencapsulation

Process for microencapsulation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-013/16
출원번호	US-0581439 (1990-09-12)
발명자 / 주소	Kielbania Jr. Andrew J. (Chalfont PA) Emmons William D. (Huntingdon Valley PA) Redlich George H. (Norristown PA)
출원인 / 주소	Rohm and Haas Company (Philadelphia PA 02)
인용정보	피인용 횟수 : 21 인용 특허 : 0

초록 ▼

A process for encapsulating a wide variety of target materials, including both hydrophilic and hydrophobic materials, employs condensation of two reactive compounds to form shells around core phase particles including target material dispersed in a continuous phase. One of the reactive compounds has at least two active methylene functional groups per molecule, the other being an active methylene-reactive crosslinking agent. Either type of the reactive compounds can be dispersed in the continuous phase, the other being dispersible in the core phase. Applications include controlled release microencapsulation of agriculture chemicals and biocides.

대표청구항 ▼

A process for encapsulating a target material in a dispersion of insoluble core-shell particles dispersed in a continuous fluid phase, the process comprising; (a) preparing a core emulsion including a core phase of unpolymerized discrete core particles dispersed in said continuous fluid phase by emulsifying in said continuous fluid phase a mixture comprising; (1) a target material, (2) a dispersant for said core particles in said continuous fluid phase; (b) combining with said target material an unpolymerized first reactive compound insoluble in said continuous fluid phase, said first reactive compound being one of the compounds selected from the group consisting of (1) compounds having at least two active methylene functional groups per molecule, and; (2) active methylene-reactive crosslinking agents; (c) combining with said continuous fluid phase an unpolymerized second reactive compound which is soluble or dispersible in said continuous fluid phase and is one of the compounds selected from the group consisting of (1) compounds having at least two active methylene functional groups per molecule, and; (2) active methylene-reactive crosslinking agents; wherein said second reactive compound is reactive with said first reactive compound; and (d) reacting said first reactive compound with said second reactive compound to form polymeric encapsulating shells around said core particles. Core-shell particles containing encapsulated target material within walls of condensation polymer product prepared according to the process of claim 1 said core-shell particles having a diameter on the order of 0.5 micron and less.

이 특허를 인용한 특허 (21)

Milne Christopher G. ; Shelby ; Jr. Paulus P., Agricultural pesticide formulations.
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Dihora, Jiten Odhavji; Hasegawa, Jun, Conditioner compositions with increased deposition of polyacrylate microcapsules.
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Dihora, Jlten Odhavji; Hasegawa, Jun, Conditioner compositions with increased deposition of polyacrylate microcapsules.
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Dihora, Jiten Odhavji; Smets, Johan; Schwantes, Todd Arlin, Delivery particle.
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Dihora, Jiten Odhavji; Smets, Johan; Schwantes, Todd Arlin, Delivery particles.
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Yan, Nianxi; Sands, Peggy Dorothy; Guinebretiere, Sandra Jacqueline, Encapsulated structural adhesive.
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Work Dale E. ; Hart Ronald L. ; Virgallito David R., Method for microencapsulating water-soluble or water-dispersible or water-sensitive materials in an organic continuous p.
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Krause Hans-Peter,DEX ; Maier Thomas,DEX ; Schoeni Jean-Paul,DEX ; Waltersdorfer Anna,DEX, Microencapsulated plant protection agents comprising dibenzyltoluenes as solvent, a process for their preparation, and t.
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Hart, Ronald Lee; Virgallito, David Russell; Work, Dale Ellis, Microencapsulation of biocides and antifouling agents.
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Lehman, Nicholas C.; Rhein, Scott W.; Anderson, John T., One part woodworking adhesive composition.
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Botts,M. Francis; Kohn,Frank C.; Miller,Maria L., Particles containing agricultural active ingredients.
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Botts,M. Francis; Kohn,Frank C.; Miller,Maria L., Particles containing agricultural active ingredients.
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Fryd Michael ; Visscher Karyn B., Particles dispersed w/polymer dispersant having liquid soluble and cross-linkable insoluble segments.
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Dihora, Jiten Odhavji; Brown, Mark Anthony, Personal cleansing compositions with increased deposition of polyacrylate microcapsules.
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Murakami Miwa,JPX ; Ogawa Masao,JPX ; Fujimoto Izumi,JPX ; Ohtsubo Toshiro,JPX, Pesticidal composition and method for controlling pests using the same.
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Dihora, Jiten Odhavji; Brown, Mark Anthony, Shampoo compositions with increased deposition of polyacrylate microcapsules.
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Dihora, Jiten Odhavji; Brown, Mark Anthony, Shampoo compositions with increased deposition of polyacrylate microcapsules.
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Hudson Alice P., Sulfur coated fertilizers with improved abrasion resistance.
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Sacripante, Guerino; Zhou, Ke, Toner composition.
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Yan, Nianxi, UV curable coating material of encapsulated water dispersed core material.
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Rodson Maurius ; Scher Herbert B., Water-in-oil microencapsulation process and microcapsules produced thereby.
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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

내보내기 구분	파일저장 인쇄 메일전송
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Process for microencapsulation 원문보기

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Process for microencapsulation 원문보기

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이 특허를 인용한 특허 (21)

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