DE4391060T1 - Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol - Google Patents

Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol

Info

Publication number: DE4391060T1
Authority: DE; Germany
Prior art keywords: poly; glycol; reduction; molecular weight; tetramethylene ether
Prior art date: 1992-03-10
Legal status (The legal status 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 status listed.): Pending

Application number

DE4391060T

Other languages

English (en)

Other versions

DE4391060C2 (de

Inventor

Suriyanarayan Dorai

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

EIDP Inc

Original Assignee

EI Du Pont de Nemours and 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.)

1992-03-10

Filing date

1993-03-10

Publication date

1995-02-23

1993-03-10 Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co

1995-02-23 Publication of DE4391060T1 publication Critical patent/DE4391060T1/de

Status Pending legal-status Critical Current

Classifications

- 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
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/331—Polymers modified by chemical after-treatment with organic compounds containing oxygen
- C08G65/332—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof
- C08G65/3322—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof acyclic
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
- C07C43/04—Saturated ethers
- C07C43/13—Saturated ethers containing hydroxy or O-metal groups
- C07C43/135—Saturated ethers containing hydroxy or O-metal groups having more than one ether bond
- 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
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterized by the type of post-polymerisation functionalisation
- C08G2650/12—Depolymerisation, e.g. to reform the monomer

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
General Chemical & Material Sciences (AREA)
Health & Medical Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Medicinal Chemistry (AREA)
Polymers & Plastics (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Polyethers (AREA)

DE4391060T 1992-03-10 1993-03-10 Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol Pending DE4391060T1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US07/847,643 US5180857A (en)	1992-03-10	1992-03-10	Reduction of molecular weight of poly(tetramethylene ether) glycol
PCT/US1993/002212 WO1993018084A1 (en)	1992-03-10	1993-03-10	Reduction of molecular weight of poly(tetramethylene ether) glycol

Publications (1)

Publication Number	Publication Date
DE4391060T1 true DE4391060T1 (de)	1995-02-23

Family

ID=25301133

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
DE4391060A Expired - Lifetime DE4391060C2 (de)	1992-03-10	1993-03-10	Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol
DE4391060T Pending DE4391060T1 (de)	1992-03-10	1993-03-10	Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
DE4391060A Expired - Lifetime DE4391060C2 (de)	1992-03-10	1993-03-10	Verringerung des Molekulargewichts von Poly(tetramethylenether)-glycol

Country Status (4)

Country	Link
US (2)	US5180857A (de)
JP (1)	JPH07504697A (de)
DE (2)	DE4391060C2 (de)
WO (1)	WO1993018084A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2453114A1 (de) *	1973-11-08	1975-05-15	Du Pont	Verfahren zum herstellen von polytetramethylenaetherglykol mit enger molekulargewichtsverteilung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3629325A (en) *	1969-02-28	1971-12-21	Jefferson Chem Co Inc	Cleaving poly(alkylene oxides) with acid anhydrides
US4163115A (en) *	1976-03-31	1979-07-31	E. I. Du Pont De Nemours And Company	Preparation of esters of poly-(tetramethylene ether) glycol
US4120903A (en) *	1977-03-30	1978-10-17	E. I. Du Pont De Nemours And Company	Method for preparing poly(tetramethylene ether) glycol
US4584414A (en) *	1984-12-21	1986-04-22	E. I. Du Pont De Nemours And Company	Process for preparing improved poly(tetramethylene ether) glycol by alcoholysis
DE3941871A1 (de) *	1989-12-19	1991-06-20	Basf Ag	Neue fluorkohlenstoff- und oxypropylenalkylethergruppen gebunden enthaltende ester, diese ester enthaltende emulsionen und deren verwendung zur herstellung von zellhaltigen kunststoffen nach dem polyisocyanat-polyadditionsverfahren
US5066824A (en) *	1990-05-15	1991-11-19	Mobay Corporation	Novel process for the preparation of amine-terminated compounds

1992
- 1992-03-10 US US07/847,643 patent/US5180857A/en not_active Ceased
1993
- 1993-03-10 WO PCT/US1993/002212 patent/WO1993018084A1/en not_active Ceased
- 1993-03-10 DE DE4391060A patent/DE4391060C2/de not_active Expired - Lifetime
- 1993-03-10 JP JP5516002A patent/JPH07504697A/ja active Pending
- 1993-03-10 DE DE4391060T patent/DE4391060T1/de active Pending
1994
- 1994-06-22 US US08/263,842 patent/USRE35360E/en not_active Expired - Lifetime

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2453114A1 (de) *	1973-11-08	1975-05-15	Du Pont	Verfahren zum herstellen von polytetramethylenaetherglykol mit enger molekulargewichtsverteilung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 62240319 zit. als Derwent Abstrc. AN:87-337120 *

Also Published As

Publication number	Publication date
JPH07504697A (ja)	1995-05-25
DE4391060C2 (de)	2003-05-08
US5180857A (en)	1993-01-19
USRE35360E (en)	1996-10-22
WO1993018084A1 (en)	1993-09-16

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