GB1055092A - Improvements in or relating to formaldehyde polymers - Google Patents
Improvements in or relating to formaldehyde polymersInfo
- Publication number
- GB1055092A GB1055092A GB4725563A GB4725563A GB1055092A GB 1055092 A GB1055092 A GB 1055092A GB 4725563 A GB4725563 A GB 4725563A GB 4725563 A GB4725563 A GB 4725563A GB 1055092 A GB1055092 A GB 1055092A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- epoxide
- alkylene oxide
- polymer
- state
- 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.)
- Expired
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
- 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
- C08G2/34—Chemical modification by after-treatment by etherification
-
- 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
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/22—Copolymerisation of aldehydes or ketones with epoxy compounds
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)
- Polyethers (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
A formaldehyde polymer of molecular weight at least 10,000 is etherified with an alkylene oxide so as to improve its stability to heat. The polymer may be treated in the powder state, e.g. of grain size of 50 to 500 microns by agitation by the fluidized bed technique or in suspension, or in solution or in a molten state. The treatment may take place at 20 DEG to 200 DEG C., in an inert atmosphere, e.g. nitrogen, under superatmospheric pressure and in the presence of a catalyst, e.g. a Lewis acid or other acid catalyst or aluminium chloride or other metal salt catalyst. The alkylene oxide may be a saturated or unsaturated aliphatic epoxide, an aromatic epoxide or an epoxide substituted by an inert group and may be used in the liquid or gaseous state and in excess.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR916948 | 1962-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1055092A true GB1055092A (en) | 1967-01-11 |
Family
ID=8791755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4725563A Expired GB1055092A (en) | 1962-11-29 | 1963-11-29 | Improvements in or relating to formaldehyde polymers |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE640381A (en) |
| DE (1) | DE1520576A1 (en) |
| FR (1) | FR1348553A (en) |
| GB (1) | GB1055092A (en) |
| LU (1) | LU44884A1 (en) |
| NL (1) | NL301105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1270629A1 (en) * | 1999-12-10 | 2003-01-02 | Polyplastics Co. Ltd. | Polyacetal copolymer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1301544B (en) * | 1965-04-09 | 1969-08-21 | Du Pont | Process for the preparation of modified polymers with a number average molecular weight of at least 10,000 |
| JPS4833856A (en) * | 1971-09-03 | 1973-05-14 | ||
| CH606179A5 (en) * | 1971-12-27 | 1978-10-31 | Sir Soc Italiana Resine Spa | |
| IT1045613B (en) * | 1973-06-15 | 1980-06-10 | Sir Soc Italiana Resine Spa | PROCEDURE PERFECTED TO HANG ACETAL POLYMERS STABLE |
-
0
- FR FR1348553D patent/FR1348553A/fr not_active Expired
- NL NL301105D patent/NL301105A/xx unknown
-
1963
- 1963-11-25 BE BE640381A patent/BE640381A/xx unknown
- 1963-11-26 LU LU44884D patent/LU44884A1/xx unknown
- 1963-11-27 DE DE19631520576 patent/DE1520576A1/en active Pending
- 1963-11-29 GB GB4725563A patent/GB1055092A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1270629A1 (en) * | 1999-12-10 | 2003-01-02 | Polyplastics Co. Ltd. | Polyacetal copolymer |
| EP1270629B1 (en) * | 1999-12-10 | 2009-07-22 | Polyplastics Co., Ltd. | Process for producing a polyacetal copolymer |
Also Published As
| Publication number | Publication date |
|---|---|
| LU44884A1 (en) | 1964-05-26 |
| FR1348553A (en) | 1964-04-10 |
| DE1520576A1 (en) | 1969-11-27 |
| NL301105A (en) | |
| BE640381A (en) | 1964-05-25 |
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