WO1996012759A3 - A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent - Google Patents

A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent Download PDF

Info

Publication number
WO1996012759A3
WO1996012759A3 PCT/US1995/013313 US9513313W WO9612759A3 WO 1996012759 A3 WO1996012759 A3 WO 1996012759A3 US 9513313 W US9513313 W US 9513313W WO 9612759 A3 WO9612759 A3 WO 9612759A3
Authority
WO
WIPO (PCT)
Prior art keywords
adduct
compatibilizing agent
alkyl phenol
fatty
compatibilizing
Prior art date
Application number
PCT/US1995/013313
Other languages
French (fr)
Other versions
WO1996012759A2 (en
Inventor
Adrian Birch
Xavier R J Fanichet
Dwight David Latham
Ricky Lynn Tabor
Original Assignee
Dow Chemical Co
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
Priority claimed from US08/326,430 external-priority patent/US5451615A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to CZ971192A priority Critical patent/CZ119297A3/en
Priority to BR9509500A priority patent/BR9509500A/en
Priority to JP8514032A priority patent/JPH11500467A/en
Priority to AU38337/95A priority patent/AU3833795A/en
Priority to EP95936350A priority patent/EP0787165A2/en
Publication of WO1996012759A2 publication Critical patent/WO1996012759A2/en
Publication of WO1996012759A3 publication Critical patent/WO1996012759A3/en
Priority to MXPA/A/1997/002869A priority patent/MXPA97002869A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12Working-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
    • C08J9/14Working-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 organic
    • C08J9/141Hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805Compounds having only one group containing active hydrogen
    • C08G18/2815Monohydroxy compounds
    • C08G18/283Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
    • C08G18/2835Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds having less than 5 ether groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6629Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666Compounds of group C08G18/48 or C08G18/52
    • C08G18/6696Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0025Foam properties rigid
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0041Foam properties having specified density
    • C08G2110/005< 50kg/m3
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Disclosed is a process for preparing a rigid, hydrocarbon-blown, polyurethane foam by reacting a polyisocyanate with a polyurethane precursor composition comprising a polyol and a compatibilizing agent containing a compatibilizing radical of the formula: -(CnH2n+1) wherein n is a number greater than or equal to 5, and wherein the compatibilizing agent contains at least one active hydrogen atom, provided that there is no more than one aromatic group per molecule, and further wherein the compatibilizing agent is a fat, oil, monoglyceride, diglyceride, fatty acid, fatty alcohol, fatty amide, fatty amine, fatty acid ester, alkoxylated adduct of any of the foregoing, alkyl phenol or propoxylated adduct thereof, alkyl phenol or adduct thereof with ethylene oxide and propylene oxide, alkyl phenol or adduct thereof with less than an average of four molecules of ethylene oxide per molecule of alkyl phenol or a mixture thereof. A preferred compatibilizing agent is castor oil. The compatibilizing agent enhances the miscibility of the hydrocarbon blowing agent. Advantageously, the polyurethane precursor compositions exhibit improved storage stability.
PCT/US1995/013313 1994-10-20 1995-10-19 A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent WO1996012759A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CZ971192A CZ119297A3 (en) 1994-10-20 1995-10-19 Process for preparing polyurethane foam in the presence of a hydrocarbon foaming agent, a mixture suitable as a polyurethane precursor and polyurethane foam per se
BR9509500A BR9509500A (en) 1994-10-20 1995-10-19 Process for preparing a closed cell polyurethane foam suitable mixture as a polyurethane precursor and polyurethane foam
JP8514032A JPH11500467A (en) 1994-10-20 1995-10-19 Method for producing polyurethane foam in the presence of a hydrocarbon blowing agent
AU38337/95A AU3833795A (en) 1994-10-20 1995-10-19 A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent
EP95936350A EP0787165A2 (en) 1994-10-20 1995-10-19 A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent
MXPA/A/1997/002869A MXPA97002869A (en) 1994-10-20 1997-04-18 A process for the preparation of polyurethane foam in the presence of a hydrocarb blowing agent

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/326,430 1994-10-20
US08/326,430 US5451615A (en) 1994-10-20 1994-10-20 Process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent
US52980095A 1995-09-18 1995-09-18
US08/529,800 1995-09-18

Publications (2)

Publication Number Publication Date
WO1996012759A2 WO1996012759A2 (en) 1996-05-02
WO1996012759A3 true WO1996012759A3 (en) 1996-07-04

Family

ID=26985402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/013313 WO1996012759A2 (en) 1994-10-20 1995-10-19 A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent

Country Status (10)

Country Link
EP (1) EP0787165A2 (en)
JP (1) JPH11500467A (en)
CN (1) CN1068016C (en)
AU (1) AU3833795A (en)
BR (1) BR9509500A (en)
CA (1) CA2201586A1 (en)
CZ (1) CZ119297A3 (en)
HU (1) HUT77801A (en)
PL (1) PL319832A1 (en)
WO (1) WO1996012759A2 (en)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502969A1 (en) 1995-01-31 1996-08-01 Elastogran Gmbh Process for the production of rigid polyurethane foams
US5470501A (en) * 1995-05-08 1995-11-28 Basf Corporation Processability of hydrocarbon blown, polyisocyanate based foams through use of a compatibilizing agent
IT1280096B1 (en) * 1995-10-06 1997-12-29 Ediltec S R L POLYURETHANE FOAM
JP3105793B2 (en) * 1996-08-13 2000-11-06 住友バイエルウレタン株式会社 Method for producing rigid polyurethane foam and composition for rigid polyurethane foam
US6284077B1 (en) 1997-08-29 2001-09-04 Dap Products Inc. Stable, foamed caulk and sealant compounds and methods of use thereof
EP0938517B1 (en) 1996-09-19 2005-07-20 Dap Products Inc. Stable, foamed caulk and sealant compounds and methods of use thereof
US5910515A (en) * 1997-03-24 1999-06-08 Ediltec S.R.L. Polyurethane foam
US6359022B1 (en) 1997-10-10 2002-03-19 Stepan Company Pentane compatible polyester polyols
US5922779A (en) * 1997-10-10 1999-07-13 Stepan Company Polyol blends for producing hydrocarbon-blown polyurethane and polyisocyanurate foams
GB2337266A (en) * 1998-02-09 1999-11-17 Basf Corp Isocyanate-based rigid foam and process for making isocyanate-based rigid foam also stable polyester polyol compositions.
WO1999042508A1 (en) 1998-02-23 1999-08-26 Stepan Company Low viscosity polyester polyols and methods for preparing same
US6258866B1 (en) * 1999-02-03 2001-07-10 Huntsman Petrochemical Corporation Blowing agent compatabilization
US6420443B1 (en) 1999-09-09 2002-07-16 Crompton Corporation Additives for enhanced hydrocarbon compatibility in rigid polyurethane foam systems
DE10060815A1 (en) * 2000-12-07 2002-06-20 Henkel Kgaa Stone composite panels
DE10060817A1 (en) * 2000-12-07 2002-06-20 Henkel Kgaa Stone composite panels for insulation
KR101029309B1 (en) * 2002-12-27 2011-04-13 디아이씨 가부시끼가이샤 Polyurethane foam sheet and process for producing layered sheet with the same
CA2655532C (en) 2006-07-04 2013-08-13 Huntsman International Llc Process for making visco-elastic foams
WO2009032894A1 (en) * 2007-09-07 2009-03-12 Dow Global Technologies Inc. Use of natural oil based compounds of low functionality to enhance foams
US20090082482A1 (en) * 2007-09-21 2009-03-26 Bayer Materialscience Llc Storage stable polyol blends containing n-pentane
DE102008000243A1 (en) 2008-02-06 2009-08-13 Evonik Goldschmidt Gmbh Novel compatibilizers to improve the shelf life of polyol blends
DE102008000255A1 (en) 2008-02-08 2009-08-20 Evonik Goldschmidt Gmbh siloxane
DE102009001595A1 (en) 2009-03-17 2010-09-23 Evonik Goldschmidt Gmbh Compatibilizer for improving the storage stability of polyol blends
MX2011009801A (en) * 2009-03-18 2011-11-04 Basf Se Method for producing rigid polyurethane foams.
JP5528043B2 (en) * 2009-09-24 2014-06-25 三井化学株式会社 Polyurethane foam and method for producing the same
DE102010063241A1 (en) 2010-12-16 2012-06-21 Evonik Goldschmidt Gmbh Silicone stabilizers for rigid polyurethane or polyisocyanurate foams
DE102011007479A1 (en) 2011-04-15 2012-10-18 Evonik Goldschmidt Gmbh Composition containing specific amides and organomodified siloxanes, suitable for the production of polyurethane foams
DE102011007468A1 (en) 2011-04-15 2012-10-18 Evonik Goldschmidt Gmbh Composition containing specific carbamate-type compounds suitable for the preparation of polyurethane foams
DE102011109541A1 (en) 2011-08-03 2013-02-07 Evonik Goldschmidt Gmbh Use of polysiloxanes containing branched polyether radicals for the production of polyurethane foams
CN102558480A (en) * 2011-12-21 2012-07-11 山东东大一诺威新材料有限公司 Isopentane and n-pentane co-foaming polyurethane rigid foam combined polyether and preparation method thereof
DE102013201829A1 (en) 2013-02-05 2014-08-07 Evonik Industries Ag Amines suitable for use in the production of polyurethanes
DE102013217395A1 (en) 2013-09-02 2015-03-05 Evonik Industries Ag Use of mixtures of organofunctionally modified polysiloxanes with amides in the production of flexible polyurethane foams
DE102013226575B4 (en) 2013-12-19 2021-06-24 Evonik Operations Gmbh Composition suitable for the production of polyurethane foams, containing at least one unsaturated fluorocarbon or unsaturated fluorocarbon as blowing agent, polyurethane foams, processes for their production and their use
EP2886591A1 (en) * 2013-12-19 2015-06-24 Evonik Industries AG Composition, suitable for the production of polyurethane foams, containing at least one nucleating agent
DE102014215388A1 (en) 2014-08-05 2016-02-11 Evonik Degussa Gmbh Nitrogen containing compounds suitable for use in the production of polyurethanes
DE102014215387B4 (en) 2014-08-05 2020-06-10 Evonik Operations Gmbh Nitrogen containing compounds suitable for use in the manufacture of polyurethanes
DE102014215381B4 (en) 2014-08-05 2020-06-10 Evonik Operations Gmbh Nitrogen containing compounds suitable for use in the manufacture of polyurethanes
DE102014215380B4 (en) 2014-08-05 2022-04-28 Evonik Operations Gmbh Nitrogen-containing compounds suitable for use in the manufacture of polyurethanes
DE102014215384A1 (en) 2014-08-05 2016-02-11 Evonik Degussa Gmbh Nitrogen containing compounds suitable for use in the production of polyurethanes
DE102014215383B4 (en) 2014-08-05 2020-06-10 Evonik Operations Gmbh Nitrogen containing compounds suitable for use in the manufacture of polyurethanes
DE102014215382A1 (en) 2014-08-05 2016-02-11 Evonik Degussa Gmbh Nitrogen containing compounds suitable for use in the production of polyurethanes
EP3078696A1 (en) 2015-04-08 2016-10-12 Evonik Degussa GmbH Production of low-emission polyurethanes
EP3176206A1 (en) 2015-12-01 2017-06-07 Evonik Degussa GmbH Method for the preparation of fine cell foams using a cell aging inhibitor
EP3205678A1 (en) 2016-02-10 2017-08-16 Evonik Degussa GmbH Aging-resistant and low-emission mattresses and/or cushions
EP3744745A1 (en) 2019-05-28 2020-12-02 Evonik Operations GmbH Production of pu foams
US20210015269A1 (en) 2019-07-19 2021-01-21 Evonik Operations Gmbh Shaped pu foam articles
EP3819323A1 (en) 2019-11-07 2021-05-12 Evonik Operations GmbH Compression set
EP3865527A1 (en) 2020-02-14 2021-08-18 Evonik Operations GmbH Production of pu foams
US20220106432A1 (en) 2020-10-07 2022-04-07 Evonik Operations Gmbh Shaped flexible pu foam articles
EP4363473A1 (en) 2021-07-02 2024-05-08 Evonik Operations GmbH Production of pu foams
WO2023161253A1 (en) 2022-02-22 2023-08-31 Evonik Operations Gmbh Use of recycled polyol from amine-based hydrolysis process to produce pu foam
EP4257327A1 (en) 2022-04-08 2023-10-11 Evonik Operations GmbH Optical determination of a control signal for slabstock polyurethane foam production
EP4257324A1 (en) 2022-04-08 2023-10-11 Evonik Operations GmbH System and method for automatically setting parameters for foam production
EP4257325A1 (en) 2022-04-08 2023-10-11 Evonik Operations GmbH Optical prediction of polyurethane foam parameters
EP4257323A1 (en) 2022-04-08 2023-10-11 Evonik Operations GmbH System and method for determining parameters for foam production
EP4257326A1 (en) 2022-04-08 2023-10-11 Evonik Operations GmbH Optical determination of a control signal in response to detection of macroscopic polyurethane foam defects

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0421269A2 (en) * 1989-10-06 1991-04-10 BASF Aktiengesellschaft Process for the preparation of rigid polyurethane foams with low heat-conductivity and their use
EP0445614A2 (en) * 1990-03-09 1991-09-11 Miles Inc. Process for the production of molded products using internal mold release agents
EP0523398A1 (en) * 1991-06-27 1993-01-20 BASF Aktiengesellschaft Process for producing urethane or urethane and isocyanurate groups containing rigid foams, and blowing agent containing emulsions according to this process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0421269A2 (en) * 1989-10-06 1991-04-10 BASF Aktiengesellschaft Process for the preparation of rigid polyurethane foams with low heat-conductivity and their use
EP0445614A2 (en) * 1990-03-09 1991-09-11 Miles Inc. Process for the production of molded products using internal mold release agents
EP0523398A1 (en) * 1991-06-27 1993-01-20 BASF Aktiengesellschaft Process for producing urethane or urethane and isocyanurate groups containing rigid foams, and blowing agent containing emulsions according to this process

Also Published As

Publication number Publication date
HUT77801A (en) 1998-08-28
JPH11500467A (en) 1999-01-12
WO1996012759A2 (en) 1996-05-02
CN1068016C (en) 2001-07-04
CA2201586A1 (en) 1996-05-02
CZ119297A3 (en) 1997-08-13
CN1161705A (en) 1997-10-08
AU3833795A (en) 1996-05-15
BR9509500A (en) 1997-10-14
MX9702869A (en) 1997-07-31
PL319832A1 (en) 1997-09-01
EP0787165A2 (en) 1997-08-06

Similar Documents

Publication Publication Date Title
WO1996012759A3 (en) A process for preparing polyurethane foam in the presence of a hydrocarbon blowing agent
EP0629607B1 (en) Compounds containing tertiary amino groups, process for their preparation and use as catalyst
US6034145A (en) Process for rigid polyurethane foams
US4010211A (en) Stabilization of polyether polyols
GB1365215A (en) Process for the production of foam resins
RU99111752A (en) RIGID POLYURETHANE FOAM
US4530938A (en) Polyols for urethane-modified isocyanurate foams
CA2028194C (en) Polyether polyols having reduced unsaturation and polyurethane foams prepared therefrom
KR970042643A (en) Polyether Polyols for Rigid Polyurethane Foam Production
EP0495249B1 (en) Use of N-(aminoalkyl)-pyrrolidines as a catalyst for the polyisocyanate-poly-addition process, process for the preparation of polyurethane-ureas
DE3003963A1 (en) METHOD FOR PRODUCING GGF. FOAM SHAPED POLYURETHANES
JPH04248823A (en) Manufacture of flexible polyurethane foam having open-cell structure and its use as furniture material
US5258418A (en) Low density, water-blown, rigid polyurethane foams having good physical properties and improved initial surface friability
US5143943A (en) Synergistic stabilizer compositions for polyols and polyurethane foam
US4473666A (en) Catalyst system for use in producing carboxylic acid blown polyurethane foams
JPH02501654A (en) Furan polyols, their production methods and applications in polyurethanes
JP3695762B2 (en) Expandable polyurethane composition
DE1745522A1 (en) Process for the preparation of polyoxyalkylene-polysiloxane compounds
US5156762A (en) Synergistic stabilizer compositions for polyols and polyurethane foam
US6740686B1 (en) Process for the manufacture of polyurethane foam, amine polyesterpolyol used in this process and foam obtained
WO1997037762A1 (en) Reactive amine catalysts for use in polyurethane polymers
KR100418138B1 (en) Open-cell polyisocyanurate foam for fixing and supporting plants
US5082868A (en) Method for the preparation of polyurethane foams
US4503167A (en) Method for urethane-modified isocyanurate foams
GB797965A (en) Polyisocyanate compositions and foams produced therefrom

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 95195788.0

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KR KZ LK LR LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG UZ

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2201586

Country of ref document: CA

Ref document number: 2201586

Country of ref document: CA

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 1996 514032

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1995936350

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1019970702502

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: PA/a/1997/002869

Country of ref document: MX

Ref document number: PV1997-1192

Country of ref document: CZ

WWP Wipo information: published in national office

Ref document number: 1995936350

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: PV1997-1192

Country of ref document: CZ

WWP Wipo information: published in national office

Ref document number: 1019970702502

Country of ref document: KR

WWR Wipo information: refused in national office

Ref document number: 1995936350

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1995936350

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: PV1997-1192

Country of ref document: CZ

WWG Wipo information: grant in national office

Ref document number: 1019970702502

Country of ref document: KR