WO1999057174A1 - Derives de polyoxyethylene comportant a une extremite un groupe amino eventuellement protege, et leur procede de production - Google Patents
Derives de polyoxyethylene comportant a une extremite un groupe amino eventuellement protege, et leur procede de production Download PDFInfo
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- WO1999057174A1 WO1999057174A1 PCT/JP1999/002350 JP9902350W WO9957174A1 WO 1999057174 A1 WO1999057174 A1 WO 1999057174A1 JP 9902350 W JP9902350 W JP 9902350W WO 9957174 A1 WO9957174 A1 WO 9957174A1
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- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular 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
- C08G65/2639—Macromolecular 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 elements other than oxygen, nitrogen or sulfur
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
- C08G63/6852—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen derived from hydroxy carboxylic acids
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular 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
- C08G65/2618—Macromolecular 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 nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/664—Polyesters containing oxygen in the form of ether groups derived from hydroxy carboxylic acids
Definitions
- the present invention relates to a polyethylene derivative having an amino group which may be protected at one end, and a method for producing the same. More specifically, the present invention relates to a polymer or oligomer having a polyamino group, which has an amino group which may be protected with an organic silyl-type amino protecting group at one end, and which comprises a polyoxyethylene segment.
- the present invention relates to a production method thereof, and a riving polymerization initiator that can be used in the production method.
- the derivatives of the present invention are collectively referred to by adding the word “poly” as a prefix, such as polyoxyethylene derivatives. It is used in a concept that encompasses derivatives containing oligomeric ethylene segments.
- Polyoxyethylene itself or compounds or block copolymers having polyoxyethylene segments are widely used as surfactants, drug carriers and medical materials.
- copolymers of ethylene oxide and propylene oxide eg, Poloxaraer
- ethylene oxide and propylene oxide prevent the adhesion of biological tissues (Holtz, Fertil. Steril., 41 (1 984) 497-507) and It has been proposed for use as a blood flow improving agent and the like.
- Heterotelechelic polyoxyethylene in which various functional groups are introduced at both ends of a polyoxyethylene molecule, has been proposed to provide polyoxyethylene having such various functions with further functions.
- the amino group and the aldehyde group are each independently stable in water.
- the amino group for example, a carboxyl group, an epoxy group, etc.
- an aldehyde group for example, it reacts quickly with an amino group, a hydroxyl group and the like, respectively, so that the functionality of the polyoxyethylene derivative can be significantly enhanced.
- an object of the present invention is to provide a polyoxy group having an amino group and an aldehyde group at both ends of a molecule, each of which may be protected and which, when present, can be deprotected under different conditions.
- An object of the present invention is to provide an ethylene segment-containing derivative and a method for producing the derivative.
- the present inventors can provide a polymer or oligomer containing a polyoxyethylene segment having a desired chain length, which is significantly different from the elimination of an acetal group commonly used as a protecting group for an aldehyde group.
- the present invention relates to a wide range of riving polymerization methods, specifically, the method of formula (I)
- a ′ and B ′ independently of one another represent an organosilyl-type amino-protecting group or, together with the nitrogen atom to which they are attached, a 4- to 7-membered Represents an organosilyl-type amino-protecting group capable of forming a mouth heterocyclic ring,
- Y represents a hydrogen atom, an alkali metal, or an organic group that can be introduced in place of the alkali metal by an appropriate reaction when Y is an alkali metal;
- R represents a hydrogen atom or a C! - ⁇ alkyl group; ⁇ is an integer of 1-20,000; and m is an integer of 0-20,000.
- the present invention also relates to a boroxyethylene derivative represented by the following formula (Ia).
- a and B each independently represent a hydrogen atom or an organosilyl-type amino protecting group, or together with the nitrogen atom to which they are attached
- a 4- to 7-membered disylazaza represents an organosilyl-type amino-protecting group capable of forming a cycloheterocyclic ring
- Y represents a hydrogen atom, an alkali metal or an organic group which can be introduced by an appropriate reaction when Y is an alkali metal.
- R represents a hydrogen atom or a C 1-6 alkyl group, n is an integer of 1-20,000, and
- n is an integer from 0 to 20, 00, where When both A and B are hydrogen atoms, Y is
- a ′ and B ′ independently represent an organic silyl-type amino protecting group or, together with the nitrogen atom to which they are attached, form a 4- to 7-membered disilazyl group.
- M represents metal alloy
- the present invention relates to the use of a compound represented by the formula (I) as a living polymerization initiator.
- FIG. 1 shows the 1 HNMR spectrum of the heterotelechelic polyoxyethylene derivative having an amino group protected at the ⁇ -terminal and an acetal group at the ⁇ -terminal obtained in Example 1:
- Fig. 2 shows the heterotelechelic polyoxyethylene derivative having a free amino group at the ⁇ -terminal and an acetal group at the ⁇ -terminal obtained in Example 2. Shows the 1 H NMR spectrum of the body;
- FIG. 3 shows the 1 HNMR spectrum of the heterotelechelic one-block copolymer obtained in Example 3 having an amino group protected at the ⁇ -terminal with an organic silyl group and having a methacryloyl group at the ⁇ -terminal. Shows the cram.
- the present invention provides a compound of the formula (II)
- a 'and B' independently represent an organosilyl-type amino protecting group or, together with the nitrogen atom to which they are attached, form a 4- to 7-membered disilazyl group Represents an organosilyl-type amino protecting group capable of forming a heterocyclic ring, and
- oxysilanes eg, ethylene oxide, propylene oxide
- cyclic esters eg, glycolide, lactide, ⁇ -open-mouthed piolactone, butyrolactone, etc.
- polar monomers eg, acrylate acrylate
- the above-mentioned organic silyl-type amino-protecting group means a group capable of protecting an amino group against a certain reaction by directly binding a nitrogen atom having an organic group to a nitrogen atom of the amino group.
- a ′ and B ′ are groups capable of protecting the amino group, and may be any organic groups as long as they meet the purpose of the present invention.
- a 'and B' can be the same or different protecting groups, and A 'and B' Can (or together) be amino protecting groups.
- Such protecting groups are those which can be easily removed using, for example, tetraalkylammonium fluoride to form the compound represented by the above formula (II) in accordance with the object of the present invention.
- any silyl group having an organic group may be used as long as the compound can act as a living polymerization initiator.
- a specific example of such a silyl group is A ′
- RR 2, R 3, R 4, R 5 and R e independently of each other an alkyl group, preferably a C, - lower alkyl group (examples of beta, methyl, E Tyl, ⁇ -propyl, iso-propyl, n-butyl, sec-butyl, n-pentyl, n-hexyl, etc.), and A 'and B' are integrated amino-protecting groups.
- RR 2 and R 3, R 4, R 5 and R together such connexion with any of the e, methylene can be a Echire down, propylene or butylene.
- This integral amino protecting group is, for example, of the formula
- Alkali metals as defined for M in formula (II) include lithium, potassium, sodium, rubidium and cesium, with preference given to lithium, potassium and sodium.
- the compound of formula (II) may be produced in situ (in situ) during polymerization or may be produced separately. These manufactures have a corresponding
- a ′ and B ′ are as defined above
- a suitable inert solvent for example, Alkali metal (eg, lithium, potassium, sodium, etc.)
- the reaction can be carried out by adding and reacting 1-naphthalene.
- suitable organic solvents include ether solvents such as tetrahydrofuran (THF), dioxane, dimethyl ether, and dimethoxetane; aromatic hydrocarbons such as benzene, toluene, and xylene; dimethyl sulfoxide; Examples include non-protonic polar solvents such as N-dimethylformamide and hexamethylphosphoric triamide, and in particular, solvents that do not adversely affect the function as an anion polymerization initiator described below. be able to. Of these, ether solvents are preferred, and tetrahydrofuran is particularly preferred.
- THF tetrahydrofuran
- dioxane dimethyl ether
- dimethoxetane aromatic hydrocarbons
- aromatic hydrocarbons such as benzene, toluene, and xylene
- dimethyl sulfoxide examples include non-protonic polar solvents such as N-dimethylformamide and
- the compound of the formula (II) can be widely used as an initiator for polymerization of various monomers.
- ethylenoxide Is polymerized in a suitable organic solvent, in the presence of the compound of the formula (II), ethylenoxide Is polymerized.
- a suitable organic solvent in the presence of the compound of the formula (II), one prepared in situ may be used as it is in the polymerization reaction, or one prepared separately may be added to the solvent.
- the compound of formula (II) is prepared by the above-mentioned production method so that the compound prepared in situ can be used as it is in the polymerization reaction.
- Suitable organic solvents used for the above can be the same solvents as those used for producing the compound of the above formula (II) from the corresponding silylamine.
- the compound of formula (II) is generally used in a molar amount of 0.0001 to 1:00, preferably 0.0001 to 1 relative to ethylene oxide.
- the amount of the solvent used is 0.1 to 1000 equivalents, preferably 0.5 to 100 equivalents of ethylene oxide in volume.
- the temperature at which the polymerization reaction is carried out is not particularly limited, but is preferably from 150 ° C to 160 ° C, more preferably from 30 ° C to 80 ° C.
- the reaction time is a time during which the ethylene oxide is consumed, and is usually 5 seconds to 100 hours, preferably 1 to 60 hours.
- the polymerization reaction is preferably performed in an inert atmosphere such as argon or nitrogen gas.
- R in the segment depends on the kind of the cyclic ester of the formula (III) to be used. When each R in the formula (III) is different, R in two consecutive repeating units forming the segment is different. The lengths can be different. However, preferably identical radicals each R is selected from hydrogen or C physician 6 alkyl group.
- the C, - ⁇ alkyl group is an alkyl group which may be branched, and may be, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, n-hexyl, etc. Yes, but preferably methyl.
- the reaction for forming the segment can be carried out according to the above-described ethylene oxide polymerization reaction conditions.
- the block copolymer thus obtained also has a molecular terminal ( ⁇ terminal) different from the molecular terminal (a-terminal) having an amino protecting group in the form of an alkali metal alcoholate.
- Both the alcoholate derived from the ethylene oxide and the alcohol derived from the cyclic diester can be subjected to anion polymerization using a further suitable monomer, and the substitution reaction with a suitable compound which can serve as a reaction terminator.
- a suitable compound which can serve as a reaction terminator can be provided.
- water as a terminator
- a polyoxyethylene derivative in which ⁇ in the formula (I) represents a hydrogen atom can be obtained.
- Other terminating agents that is, when ⁇ ⁇ in the formula (I) is an alkali metal, an organic group that can be introduced in place of the alkali metal (hereinafter, a group represented by ⁇ or See below for details By using a compound having to), Y is z group or Bruno D '
- Examples of the compound having the Z group or one (CI ⁇ CIK) include, for example,
- D ′ and E ′ independently of one another represent an alkoxy group or, together with the carbon atom to which they are attached, a C, — 6 alkyl group at the 4- or 5-position
- X represents a chlorine, bromine or iodine atom
- ⁇ is an integer of 0 to 10
- the alkoxy group in D ′ and E ′ of the above formula (IV) is preferably a de-e alkoxy group, for example, methoxy, ethoxy, n-propoxy, iso-propoxy, n-butoxy, n-pentoxy, n-hexoxy.
- the 1,3-dioxolane group that D 'and E' can form together with the carbon atom to which they are attached has the formula
- R ' is a hydrogen atom or a dealkyl group
- 6- alkyl group defined for R ' include methyl, ethyl, n-propyl, is0-propyl, n-butyl, sec-butyl, n-pentyl, and n-hexyl.
- Y in the formula (I) is an alkali metal
- the reaction of the polyoxyethylene derivative with the compound represented by the formula (IV) or the formula (V) is also carried out, if necessary, in the reaction solution in which the polyoxyethylene derivative is formed.
- the compound represented by the formula (IV) or the formula (V) usually has an equimolar amount to the polyoxyethylene derivative in the case where Y in the formula (I) is an alkali metal. Used in an amount of up to 20 times the molar amount.
- Y is a formula or Z group
- the polyoxyethylene derivative represented by can be further subjected to an additional reaction after isolation, if necessary.
- Y represents the formula
- Tylene derivatives are derivatives having an amino group protected by an organic silyl group at the ⁇ -terminal and an aldehyde group protected at the ⁇ -terminal. These derivatives are separated from the reaction mixture by solvent precipitation or the like, and then tetraalkylammonium fluoride (the alkyl group is d as described above) in the same solvent as used in the above polymerization reaction. — 6- alkyl group, preferably a butyl group) Select only amino protecting groups ( ⁇ ′ and B ′) by subjecting to elimination reaction in a solvent at room temperature for 30 minutes to 5 hours. Can be removed.
- the amino group at one terminal is free and the aldehyde at the other terminal ( ⁇ -terminal) in a yield of about 80% based on the compound of formula (II).
- the group may remain protected (acetal) to give some of the derivatives of formula (Ia).
- the acetal group at the ⁇ -terminal can be converted to a free aldehyde group by hydrolysis under stronger acidic conditions known per se ( ⁇ about 2).
- the polyoxyethylene derivative in which ⁇ in the formula (I) represents a ⁇ group can be further subjected to various reactions in a state where A ′ and B ′ remain, to convert the ⁇ group into another group. .
- examples of the conversion reaction of the ⁇ group which are of particular interest to the present inventors, are illustrated below.
- the polyoxyethylene derivative of the formula (I) is reacted with, for example, potassium 0-ethyldithiocarboxylate in an organic solvent, and then reacted with an organic amine.
- the ⁇ -terminal hydroxyl group can be converted to a mercapto group by a reaction known per se. After performing such a conversion reaction, A ′ and B ′ may be eliminated according to the above-mentioned method, if necessary. Repeating units of Okishiechiren in formula (I) - 6CH 2 CH 2 0n first and, if present, repeating units one ester
- the ratio can be theoretically 1 to about 10,000 by appropriately selecting the proportions of the corresponding monomers, ethylene oxide and the cyclic diester of the formula (III), to the initiator.
- the number of these repeating units cannot be limited because the suitable range varies depending on the intended use of the obtained polyquinethylene ethylene derivative, but in general, n :!
- m is in the range of an integer from 0 to 20,000, and m is preferably in the range of an integer from 0 to 20,000.
- the derivative represented by the above formula (Ia) is, to the best of the present inventors' knowledge, a novel compound not described in the prior art literature. That is, all polyoxoethylene derivatives in which A and B in the formula (Ia) represent an organic silyl group are novel, and when both A and B in the formula (I-a) represent a hydrogen atom, I-a) Y is the above formula — (CH 2 > CH (where D and E are D 'and E'
- Y in the formula (I-a) is a group other than a group represented by the formula — (CH 2 > 7CHCH)
- the polyoxetylene derivative that can be provided according to the present invention is generally protected at both ends, or at least one of them can be used in a protected form so that any one of the functional groups at one end is protected. Use function it can.
- a derivative whose both ends are protected can also utilize the function of polyoxyethylene ethylene segment and, if present, the function of ester segment.
- the above-mentioned derivative in which one of an amino group and an aldehyde group is released can be used as a protein or other organic compound having a carboxyl group or an amino group by utilizing the functionality of those groups. It could be used for decoration or modification of steel.
- the molecular weight of the obtained polymer was 4,200 by gel permeation chromatography. Also, NMR spectrum analysis confirmed that a silyl amino group was introduced at the ⁇ -terminal and an acetal group was introduced almost quantitatively at the ⁇ -terminal. (refer graph1)
- Example 3 Production of a polyoxyethylene derivative having an amino group protected by a silyl group at one end and a methacryloyl group at the other end
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69921366T DE69921366T8 (de) | 1998-05-07 | 1999-05-06 | Polyoxyethylenderivate mit einer endständigen, geschützten aminogruppe und verfahren zu deren herstellung |
JP2000547139A JP4581248B2 (ja) | 1998-05-07 | 1999-05-06 | 片末端に保護されていてもよいアミノ基を有するポリオキシエチレン誘導体及びその製造方法 |
EP99918308A EP1167418B1 (en) | 1998-05-07 | 1999-05-06 | Polyoxyethylene derivatives having optionally protected amino group at one end and process for producing the same |
US09/674,849 US6388041B1 (en) | 1998-05-07 | 1999-05-06 | Polyoxyethylene derivatives having optionally protected amino group at one end and process for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/139225 | 1998-05-07 | ||
JP13922598 | 1998-05-07 |
Publications (1)
Publication Number | Publication Date |
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WO1999057174A1 true WO1999057174A1 (fr) | 1999-11-11 |
Family
ID=15240419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/002350 WO1999057174A1 (fr) | 1998-05-07 | 1999-05-06 | Derives de polyoxyethylene comportant a une extremite un groupe amino eventuellement protege, et leur procede de production |
Country Status (6)
Country | Link |
---|---|
US (1) | US6388041B1 (ja) |
EP (1) | EP1167418B1 (ja) |
JP (1) | JP4581248B2 (ja) |
KR (1) | KR100586205B1 (ja) |
DE (1) | DE69921366T8 (ja) |
WO (1) | WO1999057174A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001010934A1 (fr) * | 1999-08-04 | 2001-02-15 | Nanocarrier Co., Ltd. | Copolymere sequence a segment de polymere derive d'oxazoline |
JP2008518053A (ja) * | 2004-10-25 | 2008-05-29 | インテザイン テクノロジーズ, インコーポレイテッド | ヘテロ二官能性ポリ(エチレングリコール)およびそれらの使用 |
KR20160067753A (ko) * | 2014-12-04 | 2016-06-14 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 말단에 아미노기를 갖는 폴리알킬렌글리콜 유도체의 제조 방법, 및 이것에 사용하는 중합 개시제 및 그의 원료가 되는 알코올 화합물 |
KR20160067752A (ko) * | 2014-12-04 | 2016-06-14 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 말단에 아미노기를 갖는 폴리알킬렌글리콜 유도체의 제조 방법 |
WO2017027222A1 (en) | 2015-08-10 | 2017-02-16 | Gelest Technologies, Inc. | Bifunctional poly(alkyleneoxides) with aminoalkyl and unsaturated termini and derivatives thereof |
US10377775B2 (en) | 2014-12-04 | 2019-08-13 | Shin-Etsu Chemical Co., Ltd. | Method for producing polyalkylene glycol derivative having amino group at end |
US10472377B2 (en) | 2014-12-04 | 2019-11-12 | Shin-Etsu Chemical Co., Ltd. | Method for producing polyalkylene glycol derivative having amino group at end, polymerization initiator for use in the same, and alcohol compound as raw material for the polymerization initiator |
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JP5021649B2 (ja) * | 2005-08-26 | 2012-09-12 | ノヴォ ノルディスク アクティーゼルスカブ | 高分子システムを変性する方法 |
WO2007127440A2 (en) | 2006-04-27 | 2007-11-08 | Intezyne Technologies, Inc. | Heterofunctional poly(ethylene glycol) containing acid-labile amino protecting groups and uses thereof |
FR2919296A1 (fr) * | 2007-07-25 | 2009-01-30 | Rhodia Operations Sas | Ouverture de cycles epoxy par des carbenes. |
EP2210911A1 (en) * | 2009-01-23 | 2010-07-28 | Advansa Sasa Polyester Sanay A.S. | Production of polymers |
US9012598B2 (en) * | 2012-08-01 | 2015-04-21 | Seeo, Inc. | Poly(ethyleneoxide) functionalization through alkylation |
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1999
- 1999-05-06 US US09/674,849 patent/US6388041B1/en not_active Expired - Lifetime
- 1999-05-06 KR KR1020007012433A patent/KR100586205B1/ko not_active IP Right Cessation
- 1999-05-06 JP JP2000547139A patent/JP4581248B2/ja not_active Expired - Lifetime
- 1999-05-06 DE DE69921366T patent/DE69921366T8/de active Active
- 1999-05-06 WO PCT/JP1999/002350 patent/WO1999057174A1/ja active IP Right Grant
- 1999-05-06 EP EP99918308A patent/EP1167418B1/en not_active Expired - Lifetime
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Cited By (18)
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US11066430B2 (en) | 2014-12-04 | 2021-07-20 | Shin-Etsu Chemical Co., Ltd. | Method for producing polyalkylene glycol derivative having amino group at end |
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US11236200B2 (en) | 2015-08-10 | 2022-02-01 | Gelest, Inc. | Bifunctional poly(alkyleneoxides) with aminoalkyl and unsaturated termini and derivatives thereof |
Also Published As
Publication number | Publication date |
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US6388041B1 (en) | 2002-05-14 |
DE69921366T8 (de) | 2006-04-27 |
EP1167418A1 (en) | 2002-01-02 |
JP4581248B2 (ja) | 2010-11-17 |
DE69921366D1 (de) | 2004-11-25 |
KR20010052322A (ko) | 2001-06-25 |
DE69921366T2 (de) | 2006-02-16 |
EP1167418B1 (en) | 2004-10-20 |
EP1167418A4 (en) | 2002-08-14 |
KR100586205B1 (ko) | 2006-06-07 |
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