DE1520320B2 - Verfahren zum kontinuierlichen verestern von polyoxymethylenen in loesungen die eine kristallinitaet von mehr als 90 % be sitzen - Google Patents
Verfahren zum kontinuierlichen verestern von polyoxymethylenen in loesungen die eine kristallinitaet von mehr als 90 % be sitzenInfo
- Publication number
- DE1520320B2 DE1520320B2 DE19631520320 DE1520320A DE1520320B2 DE 1520320 B2 DE1520320 B2 DE 1520320B2 DE 19631520320 DE19631520320 DE 19631520320 DE 1520320 A DE1520320 A DE 1520320A DE 1520320 B2 DE1520320 B2 DE 1520320B2
- Authority
- DE
- Germany
- Prior art keywords
- polymer
- polyoxymethylenes
- temperatures
- temperature
- solution
- Prior art date
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 19
- 229920006324 polyoxymethylene Polymers 0.000 title claims description 19
- 239000013078 crystal Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims description 20
- -1 polyoxymethylenes Polymers 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 13
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002441 X-ray diffraction Methods 0.000 claims description 6
- 230000032050 esterification Effects 0.000 claims description 6
- 238000005886 esterification reaction Methods 0.000 claims description 6
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 3
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 42
- 229920000642 polymer Polymers 0.000 description 33
- 239000000243 solution Substances 0.000 description 27
- 238000002425 crystallisation Methods 0.000 description 19
- 230000008025 crystallization Effects 0.000 description 19
- 239000000725 suspension Substances 0.000 description 18
- 239000000047 product Substances 0.000 description 11
- 238000006640 acetylation reaction Methods 0.000 description 9
- 230000021736 acetylation Effects 0.000 description 8
- 239000003085 diluting agent Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000004580 weight loss Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000000397 acetylating effect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VEFVFUFPMRTRKQ-UHFFFAOYSA-N acetyl acetate;1,2-xylene Chemical group CC(=O)OC(C)=O.CC1=CC=CC=C1C VEFVFUFPMRTRKQ-UHFFFAOYSA-N 0.000 description 1
- 239000012345 acetylating agent Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- YHASWHZGWUONAO-UHFFFAOYSA-N butanoyl butanoate Chemical compound CCCC(=O)OC(=O)CCC YHASWHZGWUONAO-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- WYVAMUWZEOHJOQ-UHFFFAOYSA-N propionic anhydride Chemical compound CCC(=O)OC(=O)CC WYVAMUWZEOHJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/30—Chemical modification by after-treatment
- C08G2/32—Chemical modification by after-treatment by esterification
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1519262 | 1962-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1520320A1 DE1520320A1 (de) | 1969-04-10 |
| DE1520320B2 true DE1520320B2 (de) | 1971-10-14 |
Family
ID=11147157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19631520320 Withdrawn DE1520320B2 (de) | 1962-07-27 | 1963-07-22 | Verfahren zum kontinuierlichen verestern von polyoxymethylenen in loesungen die eine kristallinitaet von mehr als 90 % be sitzen |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT251280B (enrdf_load_stackoverflow) |
| BE (1) | BE635477A (enrdf_load_stackoverflow) |
| CH (1) | CH427285A (enrdf_load_stackoverflow) |
| DE (1) | DE1520320B2 (enrdf_load_stackoverflow) |
| ES (1) | ES290130A1 (enrdf_load_stackoverflow) |
| GB (1) | GB985616A (enrdf_load_stackoverflow) |
| NL (2) | NL133340C (enrdf_load_stackoverflow) |
| SE (1) | SE300518B (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH606179A5 (enrdf_load_stackoverflow) * | 1971-12-27 | 1978-10-31 | Sir Soc Italiana Resine Spa | |
| US9688814B2 (en) * | 2012-12-21 | 2017-06-27 | Covestro Deutschland Ag | Functionalized polyoxymethylene block copolymers |
-
0
- BE BE635477D patent/BE635477A/xx unknown
- NL NL295524D patent/NL295524A/xx unknown
- NL NL133340D patent/NL133340C/xx active
-
1963
- 1963-07-19 ES ES290130A patent/ES290130A1/es not_active Expired
- 1963-07-22 DE DE19631520320 patent/DE1520320B2/de not_active Withdrawn
- 1963-07-22 GB GB2894163A patent/GB985616A/en not_active Expired
- 1963-07-24 AT AT591363A patent/AT251280B/de active
- 1963-07-24 CH CH923063A patent/CH427285A/de unknown
- 1963-07-26 SE SE828463A patent/SE300518B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE300518B (enrdf_load_stackoverflow) | 1968-04-29 |
| NL295524A (enrdf_load_stackoverflow) | |
| NL133340C (enrdf_load_stackoverflow) | |
| AT251280B (de) | 1966-12-27 |
| ES290130A1 (es) | 1964-03-01 |
| CH427285A (de) | 1966-12-31 |
| BE635477A (enrdf_load_stackoverflow) | |
| GB985616A (en) | 1965-03-10 |
| DE1520320A1 (de) | 1969-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |