CA1129726A - Microencapsulation by maintaining the temperature of an aqueous solution of a polyvinyl alcohol above the cloud point - Google Patents

Microencapsulation by maintaining the temperature of an aqueous solution of a polyvinyl alcohol above the cloud point

Info

Publication number
CA1129726A
CA1129726A CA332,236A CA332236A CA1129726A CA 1129726 A CA1129726 A CA 1129726A CA 332236 A CA332236 A CA 332236A CA 1129726 A CA1129726 A CA 1129726A
Authority
CA
Canada
Prior art keywords
polyvinyl alcohol
aqueous solution
type polymer
alcohol type
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA332,236A
Other languages
English (en)
French (fr)
Inventor
Hitoshi Maruyama
Koichi Kajitani
Makoto Shiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Application granted granted Critical
Publication of CA1129726A publication Critical patent/CA1129726A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2984—Microcapsule with fluid core [includes liposome]
    • Y10T428/2985—Solid-walled microcapsule from synthetic polymer
    • Y10T428/2987—Addition polymer from unsaturated monomers only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2989—Microcapsule with solid core [includes liposome]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Color Printing (AREA)
CA332,236A 1978-07-21 1979-07-20 Microencapsulation by maintaining the temperature of an aqueous solution of a polyvinyl alcohol above the cloud point Expired CA1129726A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8984378A JPS5515681A (en) 1978-07-21 1978-07-21 Production of microcapsule
JP89843/1978 1978-07-21

Publications (1)

Publication Number Publication Date
CA1129726A true CA1129726A (en) 1982-08-17

Family

ID=13982033

Family Applications (1)

Application Number Title Priority Date Filing Date
CA332,236A Expired CA1129726A (en) 1978-07-21 1979-07-20 Microencapsulation by maintaining the temperature of an aqueous solution of a polyvinyl alcohol above the cloud point

Country Status (6)

Country Link
US (1) US4269729A (en, 2012)
JP (1) JPS5515681A (en, 2012)
CA (1) CA1129726A (en, 2012)
DE (1) DE2929287C2 (en, 2012)
FR (1) FR2431322A1 (en, 2012)
GB (1) GB2025887B (en, 2012)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57110332A (en) * 1980-12-13 1982-07-09 Kanzaki Paper Mfg Co Ltd Preparation of microcapsule
US4439488A (en) * 1982-02-26 1984-03-27 The United States Of America As Represented By The Secretary Of Agriculture Encapsulation by entrapment within polyhydroxy polymer borates
JP2562624B2 (ja) * 1986-11-07 1996-12-11 昭和電工株式会社 水溶性マイクロカプセルおよび液体洗剤組成物
DE3702029A1 (de) * 1987-01-24 1988-08-04 Basf Ag Waessriges oder pulverfoermiges, wasserdispergierbares praeparat eines in wasser schwerloeslichen pharmazeutischen wirkstoffs und verfahren zu seiner herstellung
JPS649272A (en) * 1987-07-01 1989-01-12 Nippon Kayaku Kk Non-flying granular dye
US4999333A (en) * 1987-10-02 1991-03-12 Fuji Photo Film Co., Ltd. Heat sensitive recording material
FR2623977A1 (fr) * 1987-12-08 1989-06-09 Dervieux Dominique Compositions pour l'aromatisation de produits faconnes a base d'elastomeres ainsi que leurs procedes d'aromatisation
JPH01231934A (ja) * 1988-03-10 1989-09-18 Lion Corp マイクロカプセルの製造方法
US5461027A (en) * 1989-01-24 1995-10-24 Griffin Corporation Microencapsulated pendimethalin and method of making and using same
JP2914452B2 (ja) * 1989-09-28 1999-06-28 三菱製紙株式会社 マイクロカプセル及びその製造方法
US5641535A (en) * 1991-03-14 1997-06-24 Wacker-Chemie Gmbh Process for the microencapsulation of water-emulsifiable non-thermoplastic substances
US5292533A (en) * 1992-03-27 1994-03-08 Micro Flo Co. Controlled release microcapsules
US5843409A (en) * 1994-08-08 1998-12-01 Colgate Palmolive Company Two component dentifrice for the treatment of dentinal hypersensitivity
US5700475A (en) * 1995-12-29 1997-12-23 Monsanto Company Stabilized pesticidal compositions and their use
US5959073A (en) * 1997-07-07 1999-09-28 Southwest Research Institute Method for preparing polymeric beads
JPH11202484A (ja) 1998-01-16 1999-07-30 Brother Ind Ltd 画像形成媒体
GB0023713D0 (en) * 2000-09-27 2000-11-08 Unilever Plc A water soluble package
US20040175404A1 (en) * 2002-04-15 2004-09-09 Adi Shefer Moisture triggered sealed release system
US20030194416A1 (en) * 2002-04-15 2003-10-16 Adl Shefer Moisture triggered release systems comprising aroma ingredients providing fragrance burst in response to moisture
US20030216488A1 (en) 2002-04-18 2003-11-20 The Procter & Gamble Company Compositions comprising a dispersant and microcapsules containing an active material
AR040093A1 (es) * 2002-05-21 2005-03-16 Procter & Gamble Composicion limpiadora que comprende perlas suspendidas
US20030224030A1 (en) 2002-05-23 2003-12-04 Hirotaka Uchiyama Methods and articles for reducing airborne particulates
US20050142201A1 (en) * 2003-07-18 2005-06-30 Julia Rashba-Step Methods for fabrication, uses and compositions of small spherical particles of hGH prepared by controlled phase separation
JP2006152529A (ja) * 2004-11-02 2006-06-15 Sk Kaken Co Ltd 衣類
US7915215B2 (en) * 2008-10-17 2011-03-29 Appleton Papers Inc. Fragrance-delivery composition comprising boron and persulfate ion-crosslinked polyvinyl alcohol microcapsules and method of use thereof
CN102159070B (zh) * 2008-10-17 2015-07-01 普恩公司 包含硼和过硫酸根离子交联的聚乙烯醇微囊的农业活性物递送组合物及其使用方法
US8951708B2 (en) 2013-06-05 2015-02-10 Xerox Corporation Method of making toners
CN106537514B (zh) * 2014-03-31 2019-03-15 美敦力公司 核辐射粒子电力转换器
CN106659280A (zh) * 2014-06-09 2017-05-10 宝洁公司 提供持久芳香剂的制品
CA3051268C (en) 2016-11-21 2022-11-29 Bell Flavors & Fragrances, Inc. Malodor counteractant composition and methods
CN112007593A (zh) * 2020-09-04 2020-12-01 天津城建大学 以硫酸氧钛为钛源的二氧化钛相变微胶囊材料及其制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1419641A1 (de) * 1960-11-02 1968-11-07 Ibm Mikrokapseln und Verfahren zu deren Herstellung
US3318856A (en) * 1964-03-23 1967-05-09 Du Pont Process of gelling polyvinyl alcohol
GB1071170A (en) * 1964-11-23 1967-06-07 Ncr Co Method of manufacturing minute capsules
US3574133A (en) * 1968-01-29 1971-04-06 Ncr Co Encapsulation process and its product
DK129561B (da) * 1968-08-03 1974-10-28 Fuji Photo Film Co Ltd Fremgangsmåde til fremstilling af olieholdige mikrokapsler.
US3627693A (en) * 1970-01-28 1971-12-14 Ncr Co Layered capsule walls and a method for manufacturing them
US3755190A (en) * 1971-11-09 1973-08-28 Ncr Capsule manufacture
US3875074A (en) * 1972-03-06 1975-04-01 Champion Int Corp Formation of microcapsules by interfacial cross-linking of emulsifier, and microcapsules produced thereby
US3812056A (en) * 1972-07-05 1974-05-21 Ncr Continuous encapsulation

Also Published As

Publication number Publication date
GB2025887A (en) 1980-01-30
US4269729A (en) 1981-05-26
DE2929287C2 (de) 1981-10-29
JPS6228693B2 (en, 2012) 1987-06-22
DE2929287A1 (de) 1980-01-31
GB2025887B (en) 1982-10-13
FR2431322A1 (fr) 1980-02-15
JPS5515681A (en) 1980-02-02
FR2431322B1 (en, 2012) 1983-06-24

Similar Documents

Publication Publication Date Title
CA1129726A (en) Microencapsulation by maintaining the temperature of an aqueous solution of a polyvinyl alcohol above the cloud point
TW496876B (en) Encapsulated hydrophilic polymers and their preparation
KR100286528B1 (ko) 교차 결합된 메타크릴산 무수물 공중합체들
CN101058614B (zh) 一种极性种子溶胀法制备微米级磁性聚合物微球的方法
Oyama et al. Coating of uniform inorganic particles with polymers, I
Goto et al. Eudragit RS and RL (acrylic resins) microcapsules as pH insensitive and sustained release preparations of ketoprofen
JPH0230736B2 (en, 2012)
CN115677898B (zh) 一种单分散空心聚苯乙烯-二乙烯基苯复合微球、其制备方法及在酶联免疫检测中的应用
JPS5843137B2 (ja) カプセルカホウホウ
JPH0651728B2 (ja) 重合体粒子の製造方法
JPH08509510A (ja) 懸濁重合した吸水性ポリマー粒子
CN1315920C (zh) 具有无机/有机核壳结构的磁性复合微球及其制备方法
JPS61215604A (ja) ポリマ−粒子の製造方法
DE3787801T2 (de) Hautfreies poröses partikuläres PVC-Harz und Verfahren zu seiner Herstellung.
CN114773515A (zh) 一种亚微米级羧基功能化聚苯乙烯微球的制备方法
US5092933A (en) Method for the production of concrete/mortar by using dry clathrate water and concrete/mortar products produced thereby
CN100420708C (zh) 光子带隙在紫外区聚合物胶体光子晶体膜及其制法和用途
JP2000218154A (ja) マイクロカプセルの製法
JPS59223706A (ja) ホウ酸基含有ポリマ−の製造方法
JPH10287705A (ja) 架橋粒状重合体の製造方法
JPS60216838A (ja) マイクロカプセルの製造方法
JPH0680955A (ja) 粒状吸油剤の製造方法
JP3048177B2 (ja) マイクロカプセルの製造方法
JPS635130B2 (en, 2012)
JPS61215605A (ja) ポリマ−粒子の製造方法

Legal Events

Date Code Title Description
MKEX Expiry