IT1047100B - Procedimento per la polimerizzazione di tetraidrofurano - Google Patents
Procedimento per la polimerizzazione di tetraidrofuranoInfo
- Publication number
- IT1047100B IT1047100B IT51498/75A IT5149875A IT1047100B IT 1047100 B IT1047100 B IT 1047100B IT 51498/75 A IT51498/75 A IT 51498/75A IT 5149875 A IT5149875 A IT 5149875A IT 1047100 B IT1047100 B IT 1047100B
- Authority
- IT
- Italy
- Prior art keywords
- tetraidrofurano
- polymerization
- procedure
- Prior art date
Links
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000006116 polymerization reaction Methods 0.000 title 1
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
- C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
-
- 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
- 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
- C08G65/321—Polymers modified by chemical after-treatment with inorganic compounds
- C08G65/324—Polymers modified by chemical after-treatment with inorganic compounds containing oxygen
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Polyethers (AREA)
- Polyesters Or Polycarbonates (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2445961A DE2445961C2 (de) | 1974-09-26 | 1974-09-26 | Verfahren zur Polymerisation von Tetrahydrofuran |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1047100B true IT1047100B (it) | 1980-09-10 |
Family
ID=5926790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT51498/75A IT1047100B (it) | 1974-09-26 | 1975-09-25 | Procedimento per la polimerizzazione di tetraidrofurano |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4259531A (it) |
| BE (1) | BE833294A (it) |
| CA (1) | CA1054636A (it) |
| DE (1) | DE2445961C2 (it) |
| FR (1) | FR2286156A1 (it) |
| GB (1) | GB1512528A (it) |
| IT (1) | IT1047100B (it) |
| NL (1) | NL7511378A (it) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2361433A1 (fr) * | 1976-03-31 | 1978-03-10 | Du Pont | Preparation de poly(tetramethylene ether) glycol a partir d'esters de celui-ci |
| DE2760272C2 (de) * | 1976-03-31 | 1987-04-16 | E.I. Du Pont De Nemours And Co., Wilmington, Del. | Verfahren zur Herstellung von Poly-(tetramethylenether)-glykol durch Alkoholyse eines Ester-Endgruppen aufweisenden Poly-(tetramethylenether)-glykols |
| US4189566A (en) * | 1978-01-14 | 1980-02-19 | Basf Aktiengesellschaft | Polymerization of tetrahydrofuran |
| US4243799A (en) | 1978-01-14 | 1981-01-06 | Basf Aktiengesellschaft | Polymerization of tetrahydrofuran |
| DE3004328A1 (de) * | 1980-02-06 | 1981-08-13 | Bayer Ag, 5090 Leverkusen | Polytetrahydrofurane mit acrylat- oder methacrylatendgruppen |
| US4393199A (en) | 1981-05-12 | 1983-07-12 | S R I International | Cationic polymerization |
| US4510333A (en) * | 1984-06-05 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Method for preparing poly(tetramethylene ether) glycol having narrow molecular weight distribution |
| US5149862A (en) * | 1991-02-26 | 1992-09-22 | E. I. Du Pont De Nemours And Company | Preparation of polytetramethylene ether glycol using an acidic zirconia catalyst |
| DE4108046A1 (de) * | 1991-03-13 | 1992-09-17 | Basf Ag | Verfahren zur herstellung von polyoxyalkylenglykol-monoestern von monocarbonsaeuren |
| US5130470A (en) * | 1991-03-27 | 1992-07-14 | E. I. Du Pont De Nemours And Company | Polymerization of tetrahydrofuran using a fluorinated acidic catalyst and maleic acid/maleic anhydride mixture as molecular weight control agent |
| DE4325023A1 (de) * | 1993-07-26 | 1995-02-02 | Basf Ag | Verfahren zur Herstellung von Polytetrahydrofuran oder Tetrahydrofuran-Alkylenoxid-Copolymeren |
| DE19755415A1 (de) * | 1997-12-12 | 1999-06-17 | Basf Ag | Katalysator und Verfahren zur Herstellung von Polytetrahydrofuran |
| JP3659042B2 (ja) * | 1999-01-14 | 2005-06-15 | 三菱化学株式会社 | ポリアルキレンエーテルグリコールの製造方法 |
| KR100709018B1 (ko) * | 2000-02-17 | 2007-04-18 | 다이셀 화학 공업 주식회사 | 무수초산, 조제 무수초산의 정제법 및 무수초산을 이용한폴리옥시테트라메틸렌글리콜의 제조법 |
| US6821193B2 (en) * | 2002-03-27 | 2004-11-23 | Roger Kaye | Material positioning and shaping system apparatus |
| EP4196280B1 (en) | 2020-08-12 | 2024-05-29 | Basf Se | Frothing agent for flotation of ores |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR898269A (fr) * | 1939-08-18 | 1945-04-18 | Ig Farbenindustrie Ag | Procédé d'obtention de produits de polymérisation du tétrahydrofurane |
| US2499725A (en) * | 1948-02-06 | 1950-03-07 | Du Pont | Process for making esters of monocarboxylic acids |
| US2691038A (en) * | 1953-04-09 | 1954-10-05 | Du Pont | Polymers of tetrahydrofuran |
| BE733916A (it) * | 1969-05-30 | 1969-12-01 | ||
| JPS4928918B1 (it) * | 1970-09-16 | 1974-07-30 |
-
1974
- 1974-09-26 DE DE2445961A patent/DE2445961C2/de not_active Expired
-
1975
- 1975-09-04 CA CA235120A patent/CA1054636A/en not_active Expired
- 1975-09-11 BE BE159933A patent/BE833294A/xx not_active IP Right Cessation
- 1975-09-24 FR FR7529245A patent/FR2286156A1/fr active Granted
- 1975-09-25 GB GB39263/75A patent/GB1512528A/en not_active Expired
- 1975-09-25 IT IT51498/75A patent/IT1047100B/it active
- 1975-09-26 NL NL7511378A patent/NL7511378A/xx unknown
-
1978
- 1978-12-15 US US05/969,712 patent/US4259531A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL7511378A (nl) | 1976-03-30 |
| FR2286156B1 (it) | 1978-09-22 |
| FR2286156A1 (fr) | 1976-04-23 |
| GB1512528A (en) | 1978-06-01 |
| DE2445961C2 (de) | 1983-12-01 |
| US4259531A (en) | 1981-03-31 |
| CA1054636A (en) | 1979-05-15 |
| DE2445961A1 (de) | 1976-04-08 |
| BE833294A (fr) | 1976-03-11 |
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