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WO2000035998A3 - Association of compounds in carbon dioxide and the gels and/or foams formed therefrom - Google Patents

Association of compounds in carbon dioxide and the gels and/or foams formed therefrom Download PDF

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Publication number
WO2000035998A3
WO2000035998A3 PCT/US1999/029574 US9929574W WO0035998A3 WO 2000035998 A3 WO2000035998 A3 WO 2000035998A3 US 9929574 W US9929574 W US 9929574W WO 0035998 A3 WO0035998 A3 WO 0035998A3
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WO
WIPO (PCT)
Prior art keywords
compound
solution
supercritical
gels
association
Prior art date
Application number
PCT/US1999/029574
Other languages
French (fr)
Other versions
WO2000035998A2 (en
WO2000035998B1 (en
Inventor
Eric J Beckman
Andrew D Hamilton
Zhihua Huang
Andrew Carr
Robert M Enick
Original Assignee
Univ Yale
Eric J Beckman
Andrew D Hamilton
Zhihua Huang
Andrew Carr
Robert M Enick
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 Univ Yale, Eric J Beckman, Andrew D Hamilton, Zhihua Huang, Andrew Carr, Robert M Enick filed Critical Univ Yale
Priority to AU28441/00A priority Critical patent/AU2844100A/en
Publication of WO2000035998A2 publication Critical patent/WO2000035998A2/en
Publication of WO2000035998A3 publication Critical patent/WO2000035998A3/en
Publication of WO2000035998B1 publication Critical patent/WO2000035998B1/en

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    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/57—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of rings other than six-membered aromatic rings
    • C07C233/63—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of rings other than six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/64—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings
    • C07C233/81—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups
    • C07C233/82—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
    • C07C233/83—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom of an acyclic saturated carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
    • C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C235/12—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06—Esters of carbamic acids
    • C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
    • C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C271/16—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06—Esters of carbamic acids
    • C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
    • C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C271/22—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06—Esters of carbamic acids
    • C07C271/40—Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of six-membered aromatic rings
    • C07C271/42—Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of six-membered aromatic rings with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C271/52—Esters of carbamic acids having oxygen atoms of carbamate groups bound to carbon atoms of six-membered aromatic rings with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • C07C275/06—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton
    • C07C275/16—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton being further substituted by carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • C07C275/18—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of a saturated carbon skeleton containing rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • C07C275/20—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
    • C07C275/24—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
    • C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
    • C08G18/0847—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers
    • C08G18/0852—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers the solvents being organic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
    • C08G18/2885—Compounds containing at least one heteroatom other than oxygen or nitrogen containing halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
    • C08G18/3821—Carboxylic acids; Esters thereof with monohydroxyl compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00—Manufacture of cellular products
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/08—Supercritical fluid
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a method of increasing the viscosity of supercritical CO2 by combining a compound having a CO2-philic functional group and an aggregating functional group which enables the compound to form a supramolecular network in solution with supercritical CO2 to form a solution. The compound is then aggregated in solution to form a supramolecular network such that the viscosity of the supercritical CO2 with the supramolecular network is greater than that of the starting supercritical CO2. The invention also relates to a method of making a microcellular foam by combining a compound having a CO2-philic functional group and an aggregating functional group which enables the compound to form a supramolecular network in solution, with supercritical CO2 to form a solution. The compound is aggregated to form a supramolecular network in solution. Then the CO2 is removed under conditions sufficient to form a microcellular foam.
PCT/US1999/029574 1998-12-15 1999-12-15 Association of compounds in carbon dioxide and the gels and/or foams formed therefrom WO2000035998A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28441/00A AU2844100A (en) 1998-12-15 1999-12-15 Association of compounds in carbon dioxide and the gels and/or foams formed therefrom

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11218898P 1998-12-15 1998-12-15
US60/112,188 1998-12-15
US16616499P 1999-11-18 1999-11-18
US60/166,164 1999-11-18

Publications (3)

Publication Number Publication Date
WO2000035998A2 WO2000035998A2 (en) 2000-06-22
WO2000035998A3 true WO2000035998A3 (en) 2000-10-19
WO2000035998B1 WO2000035998B1 (en) 2000-11-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/029574 WO2000035998A2 (en) 1998-12-15 1999-12-15 Association of compounds in carbon dioxide and the gels and/or foams formed therefrom

Country Status (2)

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AU (1) AU2844100A (en)
WO (1) WO2000035998A2 (en)

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EP1364941A1 (en) * 2002-05-22 2003-11-26 Applied NanoSystems B.V. Gelling agents
US7677311B2 (en) 2002-08-26 2010-03-16 Schlumberger Technology Corporation Internal breaker for oilfield treatments
DE10260815B4 (en) * 2002-12-23 2008-07-03 Universität Zu Köln Foamed material and production process for the foamed material
CA2544814C (en) * 2003-11-12 2013-05-14 Applied Nanosystems B.V. Non-symmetrical gelling agent
US7665522B2 (en) 2004-09-13 2010-02-23 Schlumberger Technology Corporation Fiber laden energized fluids and methods of use
US7332529B2 (en) 2004-10-26 2008-02-19 Carr Andrew J Thermoreversible organogelators, compositions and methods of making thereof
US8268395B2 (en) 2005-12-05 2012-09-18 E. I. Du Pont De Nemours And Company Method for providing resistance to biofouling in a porous support
US8481462B2 (en) 2006-09-18 2013-07-09 Schlumberger Technology Corporation Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids
US7635028B2 (en) 2006-09-18 2009-12-22 Schlumberger Technology Corporation Acidic internal breaker for viscoelastic surfactant fluids in brine
US8044239B2 (en) 2007-08-13 2011-10-25 E. I. Du Pont De Nemours And Company Partially fluorinated ureas and amides
TWI391374B (en) * 2008-09-19 2013-04-01 Lg Chemical Ltd Fluorine-based compounds and coating compositions comprising the same
US8580911B2 (en) 2008-11-01 2013-11-12 Novomer, Inc. Polycarbonate block copolymers
MX2012011408A (en) * 2010-04-02 2012-11-29 Asahi Glass Co Ltd Method for producing carbamate compound, carbamate compound, and method for producing isocyanate compound using same.
EP2457940B1 (en) * 2010-11-24 2018-10-24 SupraPolix B.V. Fluorinated supramolecular polymers
US8969510B2 (en) 2010-11-24 2015-03-03 Suprapolix B.V. Fluorinated supramolecular polymers
US9546316B2 (en) 2012-11-12 2017-01-17 Saudi Arabian Oil Company Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules
CN105814112B (en) * 2013-08-26 2019-03-08 萨索尔化学品(美国)有限责任公司 Surfactant based on aliphatic polycarbonate
CN103540308B (en) * 2013-10-28 2016-02-03 中国石油集团川庆钻探工程有限公司 Fracturing liquid system based on supercritical carbon dioxide and application thereof
CN104910889B (en) * 2015-07-06 2017-09-19 陕西延长石油(集团)有限责任公司研究院 A kind of liquid CO2Pressure break thickener and preparation method thereof
US10508228B2 (en) * 2015-09-11 2019-12-17 Praxair Technology, Inc. Fracturing fluid composition and method utilizing same
US9957438B2 (en) 2016-01-26 2018-05-01 General Electric Company Compositions for, solutions for, and methods of use of siloxane based aromatic trisureas as viscosifiers
CN107142099B (en) * 2017-05-19 2020-09-15 中国石油大学(华东) Recyclable CO2Responsive clean fracturing fluid
CN107043620B (en) * 2017-06-06 2019-10-15 西南石油大学 A kind of preparation method of liquid carbon dioxide thickening agent
WO2019149580A1 (en) * 2018-01-30 2019-08-08 Basf Se Diurea compound based thickeners for liquid and supercritical hydrocarbons
WO2020028606A1 (en) 2018-08-02 2020-02-06 Saudi Aramco Technologies Company Sustainable polymer compositions and methods
CN110386883B (en) * 2019-08-11 2020-05-12 西南石油大学 Preparation method of supercritical carbon dioxide thickening agent for exploitation of compact oil and gas reservoir
CN110357794B (en) * 2019-08-19 2020-02-28 西南石油大学 Preparation method of supercritical carbon dioxide thickening agent for exploitation of ultra-low permeability and ultra-low permeability oil and gas reservoir
CN110951035A (en) * 2019-12-27 2020-04-03 福建安达福新材料科技有限公司 Polyurethane foam material based on supercritical carbon dioxide and preparation method thereof
CN113187459B (en) * 2021-06-03 2022-07-19 新疆恒洲景业石油技术服务有限公司 Carbon dioxide acid fracturing method for ultra-deep well carbonate rock reservoir transformation

Citations (3)

* Cited by examiner, † Cited by third party
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US4921635A (en) * 1988-11-22 1990-05-01 University Of Pittsburgh CO2 gels and methods for making
US5080169A (en) * 1990-11-13 1992-01-14 Chevron Research And Technology Company Polysilalkylenesilane polymer useful in enhanced oil recovery using carbon dioxide flooding
EP0808865A2 (en) * 1996-05-22 1997-11-26 E.I. Du Pont De Nemours & Company Incorporated Foamed fluoropolymer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921635A (en) * 1988-11-22 1990-05-01 University Of Pittsburgh CO2 gels and methods for making
US5080169A (en) * 1990-11-13 1992-01-14 Chevron Research And Technology Company Polysilalkylenesilane polymer useful in enhanced oil recovery using carbon dioxide flooding
EP0808865A2 (en) * 1996-05-22 1997-11-26 E.I. Du Pont De Nemours & Company Incorporated Foamed fluoropolymer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ENICK R ET AL: "FORMATION OF FLUOROETHER POLYURETHANES IN CO2", J. SUPERCRIT. FLUIDS, no. 13, 1998, pages 127 - 134, XP002138236 *

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Publication number Publication date
WO2000035998A2 (en) 2000-06-22
AU2844100A (en) 2000-07-03
WO2000035998B1 (en) 2000-11-16

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