NL7215838A - - Google Patents
Info
- Publication number
- NL7215838A NL7215838A NL7215838A NL7215838A NL7215838A NL 7215838 A NL7215838 A NL 7215838A NL 7215838 A NL7215838 A NL 7215838A NL 7215838 A NL7215838 A NL 7215838A NL 7215838 A NL7215838 A NL 7215838A
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46093933A JPS525080B2 (en:Method) | 1971-11-22 | 1971-11-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7215838A true NL7215838A (en:Method) | 1973-05-24 |
| NL162404B NL162404B (nl) | 1979-12-17 |
| NL162404C NL162404C (nl) | 1980-05-16 |
Family
ID=14096224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7215838.A NL162404C (nl) | 1971-11-22 | 1972-11-22 | Werkwijze voor het polymeriseren van tetrahydrofuran. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3891715A (en:Method) |
| JP (1) | JPS525080B2 (en:Method) |
| CA (1) | CA974344A (en:Method) |
| DE (1) | DE2256416B2 (en:Method) |
| ES (1) | ES408706A1 (en:Method) |
| FR (1) | FR2160891B1 (en:Method) |
| GB (1) | GB1375749A (en:Method) |
| IT (1) | IT971107B (en:Method) |
| NL (1) | NL162404C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59124932A (ja) * | 1983-01-04 | 1984-07-19 | Hitachi Maxell Ltd | 有機物ポリマ−電解質 |
| US5001277A (en) * | 1989-02-14 | 1991-03-19 | Arco Chemical Technology, Inc. | Polymerization of tetrahydrofuran with fuming sulphuric acid and a complex anion cocatalyst |
| US20080256905A1 (en) * | 2007-04-23 | 2008-10-23 | Michael Graf | Valve bag placing system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2856370A (en) * | 1953-09-09 | 1958-10-14 | Du Pont | Process for polymerizing cyclic ethers with phosphorous pentafluoride |
| US2751419A (en) * | 1954-09-13 | 1956-06-19 | Du Pont | Process for purification of polytetramethyleneether |
| US3254056A (en) * | 1960-05-23 | 1966-05-31 | Goodyear Tire & Rubber | Polyurethane elastomers from a polyether bis-chloroformate and a diamine |
| US3358042A (en) * | 1963-09-20 | 1967-12-12 | Quaker Oats Co | Process for recovering polytetramethylene ether glycol |
| US3454652A (en) * | 1966-09-22 | 1969-07-08 | Ouaker Oats Co The | Process for production of tetrahydrofuran polymers |
| JPS4825438B1 (en:Method) * | 1969-03-03 | 1973-07-28 | ||
| JPS4825439B1 (en:Method) * | 1969-03-18 | 1973-07-28 |
-
1971
- 1971-11-22 JP JP46093933A patent/JPS525080B2/ja not_active Expired
-
1972
- 1972-11-16 US US307237A patent/US3891715A/en not_active Expired - Lifetime
- 1972-11-17 DE DE19722256416 patent/DE2256416B2/de not_active Withdrawn
- 1972-11-17 ES ES408706A patent/ES408706A1/es not_active Expired
- 1972-11-21 CA CA157,129A patent/CA974344A/en not_active Expired
- 1972-11-21 FR FR7241242A patent/FR2160891B1/fr not_active Expired
- 1972-11-22 GB GB5390772A patent/GB1375749A/en not_active Expired
- 1972-11-22 NL NL7215838.A patent/NL162404C/xx active
- 1972-11-22 IT IT31968/72A patent/IT971107B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| IT971107B (it) | 1974-04-30 |
| US3891715A (en) | 1975-06-24 |
| NL162404C (nl) | 1980-05-16 |
| JPS4856794A (en:Method) | 1973-08-09 |
| FR2160891A1 (en:Method) | 1973-07-06 |
| FR2160891B1 (en:Method) | 1975-03-28 |
| ES408706A1 (es) | 1975-11-01 |
| DE2256416B2 (de) | 1977-11-17 |
| JPS525080B2 (en:Method) | 1977-02-09 |
| GB1375749A (en:Method) | 1974-11-27 |
| NL162404B (nl) | 1979-12-17 |
| DE2256416A1 (de) | 1973-05-30 |
| CA974344A (en) | 1975-09-09 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| VJC | Lapsed due to non-payment of the due maintenance fee for the patent or patent application |