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WO1992002005A3 - Gel phase transition controlled by interaction with a stimulus - Google Patents

Gel phase transition controlled by interaction with a stimulus Download PDF

Info

Publication number
WO1992002005A3
WO1992002005A3 PCT/US1991/005312 US9105312W WO9202005A3 WO 1992002005 A3 WO1992002005 A3 WO 1992002005A3 US 9105312 W US9105312 W US 9105312W WO 9202005 A3 WO9202005 A3 WO 9202005A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase
stimulus
transition
gel
interaction
Prior art date
Application number
PCT/US1991/005312
Other languages
French (fr)
Other versions
WO1992002005A2 (en
Inventor
Toyoichi Tanaka
Etsuo Kokufuta
Yong-Quing Zhang
Atsushi Suzuki
Akira Mamada
Yoshitsugu Hirokawa
Masayuki Tokita
Original Assignee
Massachusetts Inst Technology
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 Massachusetts Inst Technology filed Critical Massachusetts Inst Technology
Publication of WO1992002005A2 publication Critical patent/WO1992002005A2/en
Publication of WO1992002005A3 publication Critical patent/WO1992002005A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Medicinal Preparation (AREA)

Abstract

A phase-transition gel and a method of forming a phase-transition gel which undergoes a significant discontinuous volume change at a desired phase-transition condition in response to a stimulus is disclosed. The phase transition gel includes a liquid medium gelled with a polymer network which has a phase transition condition different from that desired and a phase-transition-modifying agent sufficient to cause, in response to the stimulus, the discontinuous volume change of the gel at the desired phase-transition condition.
PCT/US1991/005312 1990-07-26 1991-07-26 Gel phase transition controlled by interaction with a stimulus WO1992002005A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55873390A 1990-07-26 1990-07-26
US558,733 1990-07-26

Publications (2)

Publication Number Publication Date
WO1992002005A2 WO1992002005A2 (en) 1992-02-06
WO1992002005A3 true WO1992002005A3 (en) 1992-03-19

Family

ID=24230751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/005312 WO1992002005A2 (en) 1990-07-26 1991-07-26 Gel phase transition controlled by interaction with a stimulus

Country Status (1)

Country Link
WO (1) WO1992002005A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9182292B2 (en) 2005-04-29 2015-11-10 Prasidiux, Llc Stimulus indicating device employing polymer gels

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5976648A (en) 1995-12-14 1999-11-02 Kimberly-Clark Worldwide, Inc. Synthesis and use of heterogeneous polymer gels
US6149636A (en) 1998-06-29 2000-11-21 The Procter & Gamble Company Disposable article having proactive sensors
US6186991B1 (en) 1998-06-29 2001-02-13 The Procter & Gamble Company Disposable article having a responsive system including a mechanical actuator
DE19812436A1 (en) * 1998-03-22 1999-09-30 Univ Dresden Tech Functional component e.g. membrane, filter valve, dosing unit or pump
US6423044B1 (en) * 1998-06-29 2002-07-23 The Procter & Gamble Company Disposable article having bodily waste isolation device
DE69913347T2 (en) 1998-06-29 2004-10-21 Procter & Gamble EXCREMENT CHANGING MEDIUM CONTAINING DIAPHRAGM
ATE372102T1 (en) 1998-06-29 2007-09-15 Procter & Gamble DISPOSABLE CARE ARTICLE WITH A RESPONSIVE SYSTEM
US6160198A (en) * 1998-06-29 2000-12-12 The Procter & Gamble Company Disposable article having a discontinuous responsive system
US6359190B1 (en) 1998-06-29 2002-03-19 The Procter & Gamble Company Device for measuring the volume of a body cavity
US6342037B1 (en) 1998-06-29 2002-01-29 The Procter & Gamble Company Device having fecal component sensor
US6372951B1 (en) 1998-06-29 2002-04-16 The Procter & Gamble Company Disposable article having sensor to detect impending elimination of bodily waste
ATE266991T1 (en) * 1998-06-29 2004-06-15 Procter & Gamble DISPOSABLE ABSORBENT ARTICLE HAVING A RESPONSIVE SYSTEM WITH AN ELECTRICAL DRIVE
US6433244B1 (en) 1998-06-29 2002-08-13 The Procter & Gamble Company Disposable treatment article having a responsive system
ATE322862T1 (en) 1998-06-29 2006-04-15 Procter & Gamble DISPOSABLE ITEM WITH EARLY WARNING MEASUREMENT DEVICE
GC0000131A (en) * 1999-04-29 2005-06-29 Shell Int Research Downhole device for controlling fluid flow in a well.
US6679324B2 (en) 1999-04-29 2004-01-20 Shell Oil Company Downhole device for controlling fluid flow in a well
US7940605B2 (en) 2005-04-29 2011-05-10 Prasidiux, Llc Stimulus indicating device employing polymer gels
EP1877761A4 (en) * 2005-04-29 2010-03-24 Rel S Ambrozy Stimulus indication employing polymer gels
US8077554B2 (en) 2005-04-29 2011-12-13 Ambrozy Rel S Stimulus indicating device employing polymer gels
US8166906B2 (en) 2005-04-29 2012-05-01 Ambrozy Rel S Stimulus indicating device employing polymer gels
GB0623043D0 (en) * 2006-11-18 2006-12-27 Univ Sheffield Sensor devices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172066A (en) * 1974-06-21 1979-10-23 The Dow Chemical Company Cross-linked, water-swellable polymer microgels
US4174952A (en) * 1978-01-23 1979-11-20 Massachusetts Institute Of Technology Immunoassay by light scattering intensity anisotropy measurements
US4732930A (en) * 1985-05-20 1988-03-22 Massachusetts Institute Of Technology Reversible, discontinuous volume changes of ionized isopropylacrylamide cells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172066A (en) * 1974-06-21 1979-10-23 The Dow Chemical Company Cross-linked, water-swellable polymer microgels
US4174952A (en) * 1978-01-23 1979-11-20 Massachusetts Institute Of Technology Immunoassay by light scattering intensity anisotropy measurements
US4732930A (en) * 1985-05-20 1988-03-22 Massachusetts Institute Of Technology Reversible, discontinuous volume changes of ionized isopropylacrylamide cells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9182292B2 (en) 2005-04-29 2015-11-10 Prasidiux, Llc Stimulus indicating device employing polymer gels

Also Published As

Publication number Publication date
WO1992002005A2 (en) 1992-02-06

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