SE7707850L - Polyuretaner och polymer/polyoler - Google Patents

Polyuretaner och polymer/polyoler

Info

Publication number
SE7707850L
SE7707850L SE7707850A SE7707850A SE7707850L SE 7707850 L SE7707850 L SE 7707850L SE 7707850 A SE7707850 A SE 7707850A SE 7707850 A SE7707850 A SE 7707850A SE 7707850 L SE7707850 L SE 7707850L
Authority
SE
Sweden
Prior art keywords
polyoles
polyurethanes
polymers
Prior art date
Application number
SE7707850A
Other languages
English (en)
Other versions
SE434646B (sv
Inventor
F E Critchfield
R M Gerkin
L E Hawker
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of SE7707850L publication Critical patent/SE7707850L/sv
Publication of SE434646B publication Critical patent/SE434646B/sv

Links

Classifications

    • 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
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2609Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/06Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
    • 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
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4833Polyethers containing oxyethylene units
    • C08G18/4837Polyethers containing oxyethylene units and other oxyalkylene units
    • 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
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4833Polyethers containing oxyethylene units
    • C08G18/4837Polyethers containing oxyethylene units and other oxyalkylene units
    • C08G18/4841Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end 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
    • C08G18/40High-molecular-weight compounds
    • C08G18/63Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
    • C08G18/632Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
    • 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
    • C08G18/667Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • C08L75/08Polyurethanes from polyethers
    • 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
    • C08G2120/00Compositions for reaction injection moulding processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Polyethers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Graft Or Block Polymers (AREA)
SE7707850A 1976-07-06 1977-07-05 Polyolkomposition samt en herpa baserad flytande polymerprodukt SE434646B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/703,022 US4125505A (en) 1976-07-06 1976-07-06 Polymer/polyols from high ethylene oxide content polyols

Publications (2)

Publication Number Publication Date
SE7707850L true SE7707850L (sv) 1978-01-07
SE434646B SE434646B (sv) 1984-08-06

Family

ID=24823631

Family Applications (2)

Application Number Title Priority Date Filing Date
SE7707850A SE434646B (sv) 1976-07-06 1977-07-05 Polyolkomposition samt en herpa baserad flytande polymerprodukt
SE8303533A SE8303533D0 (sv) 1976-07-06 1983-06-20 Polyol-kedjeforlengningsmedelsblandning, polymer/polyol-kedjeforlengningsmedelsblandning och anvendning derav for framstellning av polyuretanelaster

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE8303533A SE8303533D0 (sv) 1976-07-06 1983-06-20 Polyol-kedjeforlengningsmedelsblandning, polymer/polyol-kedjeforlengningsmedelsblandning och anvendning derav for framstellning av polyuretanelaster

Country Status (14)

Country Link
US (1) US4125505A (sv)
JP (2) JPS5313700A (sv)
AU (1) AU509111B2 (sv)
BE (1) BE856486A (sv)
BR (1) BR7704381A (sv)
CA (1) CA1105182A (sv)
DE (3) DE2730374C2 (sv)
ES (2) ES460407A1 (sv)
FR (1) FR2357592A1 (sv)
GB (1) GB1579640A (sv)
IT (1) IT1081512B (sv)
MX (1) MX146808A (sv)
NL (1) NL7707438A (sv)
SE (2) SE434646B (sv)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312973A (en) * 1978-08-10 1982-01-26 Union Carbide Corporation Polyurethane elastomers prepared from polyol or polymer/polyol-chain extender mixtures
US4242476A (en) * 1978-11-17 1980-12-30 Union Carbide Corporation Polymer/polyol compositions containing vinylidene chloride
FR2446298A1 (fr) * 1979-01-15 1980-08-08 Inst Sint Smol Procede continu de preparation de polyethers
DE2915610A1 (de) * 1979-04-18 1980-10-30 Bayer Ag Verfahren zur herstellung von modifizierten polyetherpolyolen und deren verwendung in verfahren zur herstellung von polyurethankunststoffen
US4243760A (en) * 1979-05-23 1981-01-06 Texaco Development Corporation Reaction injection molded polyurethane
JPS5831093B2 (ja) * 1980-09-11 1983-07-04 テキサコ・デイベロップメント・コ−ポレ−ション 反応射出成形ポリウレタンエラストマ−の製造方法
JPS57209920A (en) * 1981-06-18 1982-12-23 Sanyo Chem Ind Ltd Production of polyurethane
DE3126517A1 (de) * 1981-07-04 1983-01-20 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von gegebenenfalls zellhaltigen polyurethan-elastomeren
DE3137132A1 (de) * 1981-09-18 1983-04-07 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von elastischen polyurethan-weichschaumstoffen
DE3219822A1 (de) 1982-05-26 1983-12-01 Bayer Ag, 5090 Leverkusen Einphasig lagerstabile, salzhaltige polyolkompositionen mit hohem ethylenglykol- oder butandiol-anteil und ihre verwendung zur herstellung von polyurethanen
DE3219759A1 (de) * 1982-05-26 1983-12-01 Bayer Ag, 5090 Leverkusen Einphasig lagerstabile polyolkompositionen mit hohem ethylenglykol-anteil und ihre verwendung zur herstellung von polyurethanen
JPS58208335A (ja) * 1982-05-29 1983-12-05 Nippon Polyurethan Kogyo Kk ゴム配合組成物
JPS59187019A (ja) * 1983-04-08 1984-10-24 Asahi Glass Co Ltd ポリウレタン系エラストマ−の製造方法
US4521548A (en) * 1983-04-12 1985-06-04 The Dow Chemical Company Preparation of polyether polyols
JPS59227921A (ja) * 1983-06-10 1984-12-21 Asahi Glass Co Ltd ポリウレタン系エラストマ−の製造方法
US4448903A (en) * 1983-07-25 1984-05-15 Mobay Chemical Corporation Novel system for the production of polyurethanes
US4539339A (en) * 1984-09-27 1985-09-03 Texaco Inc. Polyurethane foams made from vinyl polymer polyols
US4539378A (en) * 1984-09-27 1985-09-03 Texaco Inc. Vinyl polymer polyols made using epoxy resin-modified polyols
US4731416A (en) * 1984-10-01 1988-03-15 The Dow Chemical Company Polyurethane-type adhesives containing nonaqueous solutions of acrylate polymers
US4622361A (en) * 1985-03-29 1986-11-11 Union Carbide Corporation Flame retarded high modulus polyurethane elastomers and method of making same
US4785127A (en) * 1985-08-05 1988-11-15 Arco Chemical Company Vinyl polymer polyols made using partially alkoxylated polyoxyalkyleneamines
US4686240A (en) 1985-10-25 1987-08-11 Union Carbide Corporation Process for producing polyurethane foams using foam modifiers
JPS62288623A (ja) * 1986-06-05 1987-12-15 M D Kasei Kk ウレタン発泡体の製造方法
GB2199504A (en) * 1987-01-06 1988-07-13 Peter Egan Directional dice
US4883825A (en) * 1987-12-30 1989-11-28 Union Carbide Chemicals And Plastics Company Inc. Process for the manufacture of low density, flexible polyurethane foams
US5011908A (en) * 1988-07-12 1991-04-30 Arco Chemical Technology, Inc. Polymer polyol compositions and their use in the preparation of polyurethane foams
US5171759A (en) * 1988-07-12 1992-12-15 Arco Chemical Technology, L.P. Polymer polyol compositions and their use in the preparation of polyurethane foams
EP0350868B1 (en) * 1988-07-12 1994-11-30 ARCO Chemical Technology, L.P. Polymer polyol composition and their use in the preparation of polyurethane foams
US5145602A (en) * 1989-02-01 1992-09-08 Union Oil Company Of California Sol/gels containing nonionic surfactants and preparation methods
JPH02206643A (ja) * 1989-02-03 1990-08-16 Asahi Glass Co Ltd ポリマー分散ポリオール,およびその用途
US5122548A (en) * 1990-03-23 1992-06-16 The Dow Chemical Company Elastomeric polyisocyanate-based polymers from polyoxyalkylene polyols containing internal polyoxyethylene blocks
US5342291A (en) * 1991-08-29 1994-08-30 Minnesota Mining And Manufacturing Company Printed woven fiber materials and method
DE590131T1 (de) * 1992-03-24 1994-12-22 Dow Chemical Co Neues endbehandlungsverfahren für hydroxyfunktionelle polythethern.
GB9301995D0 (en) * 1993-02-02 1993-03-17 Ici Plc Process for making flexible foams
EP0677543B2 (en) * 1994-04-12 2006-11-15 Mitsui Chemicals, Inc. Preparation of polyoxyalkylene polyols, polymer polyols and flexible polyurethane foams
US5677413A (en) * 1995-06-15 1997-10-14 Arco Chemical Technology, L.P. Polyurethane elastomers exhibiting improved demold green strength and water absorption and haze-free polyols suitable for their preparation
EP1303554B1 (en) * 2000-07-27 2012-08-29 Huntsman International Llc Polyol processing
US6831112B2 (en) * 2000-09-28 2004-12-14 Sanyo Chemical Industries, Ltd. Polyether, active-hydrogen ingredient, resin-forming composition, and process for producing foam
US6833390B2 (en) * 2002-07-22 2004-12-21 Bayer Polymers Llc Process for preparing closed-cell water-blown rigid polyurethane foams having improved mechanical properties
US6855742B2 (en) * 2003-01-28 2005-02-15 Bayer Antwerp, N.V. Agents for reducing the force-to-crush (FTC) of high support flexible foams
DE102004017294A1 (de) * 2004-04-05 2005-10-20 Basf Ag Verfahren zur Herstellung von Polyurethan-Schaumstoffen
JP4609179B2 (ja) * 2004-05-14 2011-01-12 旭硝子株式会社 硬質発泡合成樹脂の製造方法
DE102004060284A1 (de) * 2004-12-15 2006-06-29 Bayer Materialscience Ag Reaktive Polyurethan-Prepolymere mit einem geringen Gehalt an monomeren Diisocyanaten
EP2085414A4 (en) * 2006-11-20 2012-11-07 Asahi Glass Co Ltd PROCESS FOR PRODUCING HARD POLYURETHANE FOAM
EP1935918A1 (en) * 2006-12-20 2008-06-25 Repsol Ypf S.A. New reactive polyols
WO2010108672A2 (de) 2009-03-25 2010-09-30 Byk-Chemie Gmbh Zusammensetzung umfassend stabile polyolmischungen
EP2516495B1 (de) 2009-12-22 2015-07-29 BYK-Chemie GmbH Zusammensetzung umfassend stabile polyolmischungen
DE102011050013A1 (de) * 2011-04-29 2012-10-31 Bayer Materialscience Aktiengesellschaft Polyurethanschaum und Verfahren zu seiner Herstellung
US10066047B2 (en) 2012-02-02 2018-09-04 Covestro Llc Polyurethane foams with decreased aldehyde emissions, a process for preparing these foams and a method for decreasing aldehyde in polyurethane foams
US20130289150A1 (en) 2012-04-26 2013-10-31 Bayer Materialscience Ag Viscoelastic polyurethane foams
US9951174B2 (en) 2015-05-20 2018-04-24 Covestro Llc Polyol compositions, a process for the production of these polyol compositions, and their use in the production of open celled polyurethane foams having high airflow
CN109923140B (zh) 2016-11-11 2021-11-05 赢创运营有限公司 用于聚氨酯基泡沫的乳化剂
US11021567B2 (en) 2017-03-15 2021-06-01 Covestro Llc Polyols for improved viscoelastic foams with reduced temperature sensitivity
US10766998B2 (en) 2017-11-21 2020-09-08 Covestro Llc Flexible polyurethane foams
WO2021071808A1 (en) 2019-10-09 2021-04-15 Covestro Llc Methods, systems and computer program products for producing polyurethane foam products using optical and infrared imaging
CN112341596B (zh) * 2020-10-28 2022-04-19 山东一诺威聚氨酯股份有限公司 预制型聚氨酯发泡弹性体材料及其制备方法、施工的球场及其施工方法
MX2023005900A (es) * 2020-11-20 2023-06-06 Huntsman Int Llc Composicion de poliol estabilizado mejorado.
US11572433B2 (en) 2021-03-12 2023-02-07 Covestro Llc In-situ formed polyols, a process for their preparation, foams prepared from these in-situ formed polyols and a process for their preparation
US11718705B2 (en) 2021-07-28 2023-08-08 Covestro Llc In-situ formed polyether polyols, a process for their preparation, and a process for the preparation of polyurethane foams

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120223A (en) * 1964-06-23 1968-07-17 Lankro Chem Ltd Improvements in or relating to polyethers and polyurethanes derived therefrom
GB1321697A (en) * 1970-11-16 1973-06-27 Sangamo Weston Optical attachments for exposure meters
BE788115A (fr) 1971-08-30 1973-02-28 Union Carbide Corp Compositions a base d'un polymere et d'un polyol convenant pourla fabrication des mousses de polyurethane
GB1355227A (en) * 1971-12-10 1974-06-05 Shell Int Research Mixtures for the preparation of polyurethane foams
DE2220338C3 (de) 1972-04-26 1978-08-17 Bayer Ag, 5090 Leverkusen Verwendung von Äthylenoxid/Propylenoxid-Mischpolymerisaten als wasserlösliche Schmiermittel, Metallbearbeitungsmittel und Hydraulikflüssigkeiten
US3823201A (en) * 1972-12-04 1974-07-09 Basf Wyandotte Corp Highly-stable graft copolymer dispersions in polyols containing unsaturation and polyurethanes prepared therefrom
JPS533438B2 (sv) * 1973-05-02 1978-02-06
DE2341294C3 (de) 1973-08-16 1981-12-24 Bayer Ag, 5090 Leverkusen Polyolgemische
GB1505126A (en) 1974-05-15 1978-03-22 Mccord Corp Thermoplastic polyurethane
US3983094A (en) * 1975-09-11 1976-09-28 Uniroyal, Inc. Thermally stable polyurethane elastomers produced from poly(oxypropylene)-poly(oxyethylene)glycols of high oxyethylene group content
DE2607380C3 (de) * 1976-02-24 1981-07-23 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von warmformbaren Polyisocyanuratschaumstoffen

Also Published As

Publication number Publication date
JPS6239609B2 (sv) 1987-08-24
AU509111B2 (en) 1980-04-17
US4125505A (en) 1978-11-14
NL7707438A (nl) 1978-01-10
DE2759334C2 (de) 1984-07-19
ES464399A1 (es) 1978-09-01
IT1081512B (it) 1985-05-21
BR7704381A (pt) 1978-04-04
DE2730374A1 (de) 1978-01-12
JPS576471B2 (sv) 1982-02-04
FR2357592B1 (sv) 1980-04-25
SE434646B (sv) 1984-08-06
FR2357592A1 (fr) 1978-02-03
ES460407A1 (es) 1978-05-01
DE2759398B1 (de) 1980-07-17
GB1579640A (en) 1980-11-19
SE8303533L (sv) 1983-06-20
AU2670877A (en) 1979-01-11
CA1105182A (en) 1981-07-14
JPS56127627A (en) 1981-10-06
DE2730374C2 (de) 1982-12-23
JPS5313700A (en) 1978-02-07
SE8303533D0 (sv) 1983-06-20
MX146808A (es) 1982-08-24
BE856486A (fr) 1978-01-05

Similar Documents

Publication Publication Date Title
SE7707850L (sv) Polyuretaner och polymer/polyoler
BE860656A (fr) Irradiation de polymeres
SE8102296L (sv) Polymerer
FR2299356A1 (fr) Polymeres d'
SE7708615L (sv) Polyisocyanatforpolymerer och derifran erhallna polyuretanprodukter
FI800064A (fi) Polymer diffusionsmatris
SE433228B (sv) Smorjoljekomposition innefattande en smorjolja och en hydrerad stjernformad polymer
NL7806204A (nl) Opschuimbaar polymeermateriaal.
NO151624C (no) Polyesteraminoalkylalkoksysilan-polymer samt anvendelse derav
BE862134A (fr) Matiere photopolymerisable et son utilisation
MX144016A (es) Composicion polimerica mejorada
NL7812535A (nl) Thermoplastisch polymeer vormmengsel en voorwerp verkregen daaruit.
FI773784A (fi) Framstaellning av vissa immuna nukleinsyror celldialysat och antikroppar
NO772638L (no) Absorberende polymermateriale.
DK44477A (da) Styrenpolymerskumstof og fremstilling deraf
SE7613736L (sv) Vermestabiliserande styrenpolymerer
SE7606427L (sv) Ampull och ampullberare
MX145402A (es) Polimezcla polimerica mejorada
MX143023A (es) Polimezcla polimerica mejorada
AT355314B (de) Stabilisierte synthetische polymermasse
FR2323714A1 (fr) Methylals oligomeres et polymeres
DK301677A (da) Modificerede polyoler
MX3735E (es) Composicion de polimero/poliol mejorada y procedimiento para obtenerla
BE865017A (fr) Polymeres segmentes
SE435720B (sv) Oligomera silyletrar och deras anvendning som polymerisationsinitiatorer