NL7703462A - PROCESS FOR POLYMERIZING TETRAHYDROFURAN. - Google Patents
PROCESS FOR POLYMERIZING TETRAHYDROFURAN.Info
- Publication number
- NL7703462A NL7703462A NL7703462A NL7703462A NL7703462A NL 7703462 A NL7703462 A NL 7703462A NL 7703462 A NL7703462 A NL 7703462A NL 7703462 A NL7703462 A NL 7703462A NL 7703462 A NL7703462 A NL 7703462A
- Authority
- NL
- Netherlands
- Prior art keywords
- polymerizing tetrahydrofuran
- polymerizing
- tetrahydrofuran
- Prior art date
Links
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
- C08G65/04—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 only
- C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
- C08G65/16—Cyclic ethers having four or more ring atoms
- C08G65/20—Tetrahydrofuran
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US67255576A | 1976-03-31 | 1976-03-31 | |
US67255676A | 1976-03-31 | 1976-03-31 | |
US67255776A | 1976-03-31 | 1976-03-31 | |
US75121176A | 1976-12-16 | 1976-12-16 | |
US76751077A | 1977-02-14 | 1977-02-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7703462A true NL7703462A (en) | 1977-10-04 |
NL184066B NL184066B (en) | 1988-11-01 |
NL184066C NL184066C (en) | 1989-04-03 |
Family
ID=27542063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7703462A NL184066C (en) | 1976-03-31 | 1977-03-30 | Process for polymerizing tetrahydrofuran or alkyl substituted TETRAHYDROFURAN TO poly (tetramethylene ether) glycol ESTER END GROUPS, PROCESS FOR PRODUCING poly (tetramethylene ether) glycol from THUS PREPARED poly (tetramethylene ether) glycol ester AND moldings MADE BY APPLYING THE THUS PREPARED POLY (TETRAMETHYLENE ETHER) GLYCOL OR ITS ESTER. |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE853028A (en) |
DE (2) | DE2709280C2 (en) |
FR (1) | FR2357591A1 (en) |
GB (1) | GB1575529A (en) |
IT (1) | IT1104560B (en) |
NL (1) | NL184066C (en) |
PL (1) | PL114086B1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2964245D1 (en) * | 1978-03-16 | 1983-01-20 | Du Pont | Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether content, processes for preparing the same, and articles and fibers of the polyurethanes |
FR2429802A1 (en) * | 1978-06-30 | 1980-01-25 | Du Pont | Prepn. of co:polyether glycol! with terminal ester gps. - by copolymerising THF with alkylene oxide or cyclic acetal using (co)polymer of unsatd. monomer(s) as catalyst |
DE3004328A1 (en) * | 1980-02-06 | 1981-08-13 | Bayer Ag, 5090 Leverkusen | POLYTETRAHYDROFURANE WITH ACRYLATE OR METHACRYLATE END GROUPS |
DE3013927A1 (en) * | 1980-04-11 | 1981-10-22 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING POLYMERS CONTAINING HYDROXYL GROUPS |
US4393199A (en) | 1981-05-12 | 1983-07-12 | S R I International | Cationic polymerization |
DE3410069A1 (en) * | 1984-03-20 | 1985-10-03 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING POLYMERS CONTAINING HYDROXYL GROUPS |
DE4325023A1 (en) * | 1993-07-26 | 1995-02-02 | Basf Ag | Process for the preparation of polytetrahydrofuran or tetrahydrofuran-alkylene oxide copolymers |
DE19527532A1 (en) * | 1995-07-27 | 1997-01-30 | Basf Ag | Process for the preparation of polyoxytetramethylene glycol |
DE19719875A1 (en) * | 1997-05-12 | 1998-11-19 | Basf Ag | Process for the polymerization of cyclic ethers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1073230A (en) * | 1962-11-23 | 1967-06-21 | Eastman Kodak Co | Preparation of poly(tetramethylene glycol) and also of elastomeric polyesters formed thereform |
JPS5232677B2 (en) * | 1972-12-29 | 1977-08-23 | ||
DE2445961C2 (en) * | 1974-09-26 | 1983-12-01 | Basf Ag, 6700 Ludwigshafen | Process for the polymerization of tetrahydrofuran |
-
1977
- 1977-03-03 DE DE19772709280 patent/DE2709280C2/en not_active Expired
- 1977-03-03 DE DE19772760272 patent/DE2760272C2/en not_active Expired
- 1977-03-24 FR FR7708800A patent/FR2357591A1/en active Granted
- 1977-03-29 IT IT2183977A patent/IT1104560B/en active
- 1977-03-30 BE BE176242A patent/BE853028A/en not_active IP Right Cessation
- 1977-03-30 PL PL19704177A patent/PL114086B1/en unknown
- 1977-03-30 NL NL7703462A patent/NL184066C/en not_active IP Right Cessation
- 1977-03-31 GB GB1374677A patent/GB1575529A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL184066B (en) | 1988-11-01 |
DE2709280A1 (en) | 1977-10-06 |
FR2357591A1 (en) | 1978-02-03 |
NL184066C (en) | 1989-04-03 |
BE853028A (en) | 1977-09-30 |
FR2357591B1 (en) | 1981-06-26 |
PL197041A1 (en) | 1978-01-02 |
DE2709280C2 (en) | 1986-08-21 |
GB1575529A (en) | 1980-09-24 |
DE2760272C2 (en) | 1987-04-16 |
DE2760272A1 (en) | 1985-05-09 |
PL114086B1 (en) | 1981-01-31 |
IT1104560B (en) | 1985-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
V1 | Lapsed because of non-payment of the annual fee |