NL7002977A - - Google Patents
Info
- Publication number
- NL7002977A NL7002977A NL7002977A NL7002977A NL7002977A NL 7002977 A NL7002977 A NL 7002977A NL 7002977 A NL7002977 A NL 7002977A NL 7002977 A NL7002977 A NL 7002977A NL 7002977 A NL7002977 A NL 7002977A
- Authority
- NL
- Netherlands
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
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44015932A JPS4825438B1 (xx) | 1969-03-03 | 1969-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL7002977A true NL7002977A (xx) | 1970-09-07 |
| NL153234B NL153234B (nl) | 1977-05-16 |
Family
ID=11902530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL707002977A NL153234B (nl) | 1969-03-03 | 1970-03-03 | Werkwijze voor het polymeriseren van tetrahydrofuran. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3712930A (xx) |
| JP (1) | JPS4825438B1 (xx) |
| DE (1) | DE2009580C3 (xx) |
| ES (1) | ES376997A1 (xx) |
| FR (1) | FR2037451A5 (xx) |
| GB (1) | GB1274347A (xx) |
| NL (1) | NL153234B (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS525080B2 (xx) * | 1971-11-22 | 1977-02-09 | ||
| JPS5152446U (xx) * | 1974-10-18 | 1976-04-21 | ||
| JPS5487798A (en) * | 1977-12-26 | 1979-07-12 | Mitsui Toatsu Chem Inc | Preparation of polytetramethylene ether glycol |
| DE3107449A1 (de) * | 1981-02-27 | 1982-09-16 | Basf Ag, 6700 Ludwigshafen | Verfahren zur reinigung von polytetramethylenetherglykolen |
| JPH07116276B2 (ja) * | 1987-03-25 | 1995-12-13 | 保土谷化学工業株式会社 | ポリウレタン樹脂の製造方法 |
| US5001277A (en) * | 1989-02-14 | 1991-03-19 | Arco Chemical Technology, Inc. | Polymerization of tetrahydrofuran with fuming sulphuric acid and a complex anion cocatalyst |
| DE4108044A1 (de) * | 1991-03-13 | 1992-09-17 | Basf Ag | Verfahren zur herstellung von polyoxyalkylenglykolen |
| TW442513B (en) | 1999-05-19 | 2001-06-23 | Dairen Chemical Corp | Method for preparing polyether diol |
-
1969
- 1969-03-03 JP JP44015932A patent/JPS4825438B1/ja active Pending
-
1970
- 1970-02-24 US US00013839A patent/US3712930A/en not_active Expired - Lifetime
- 1970-02-27 ES ES376997A patent/ES376997A1/es not_active Expired
- 1970-03-02 FR FR7007338A patent/FR2037451A5/fr not_active Expired
- 1970-03-02 DE DE2009580A patent/DE2009580C3/de not_active Expired
- 1970-03-03 GB GB00120/70A patent/GB1274347A/en not_active Expired
- 1970-03-03 NL NL707002977A patent/NL153234B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2037451A5 (xx) | 1970-12-31 |
| ES376997A1 (es) | 1972-05-16 |
| JPS4825438B1 (xx) | 1973-07-28 |
| US3712930A (en) | 1973-01-23 |
| NL153234B (nl) | 1977-05-16 |
| DE2009580A1 (de) | 1971-01-14 |
| DE2009580B2 (de) | 1974-06-20 |
| GB1274347A (en) | 1972-05-17 |
| DE2009580C3 (de) | 1975-02-06 |