JPS5527323A - Method of stabilizing polyoxymethylene - Google Patents
Method of stabilizing polyoxymethyleneInfo
- Publication number
- JPS5527323A JPS5527323A JP9947478A JP9947478A JPS5527323A JP S5527323 A JPS5527323 A JP S5527323A JP 9947478 A JP9947478 A JP 9947478A JP 9947478 A JP9947478 A JP 9947478A JP S5527323 A JPS5527323 A JP S5527323A
- Authority
- JP
- Japan
- Prior art keywords
- polyoxymethylene
- salt
- component
- cation
- anion
- 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.)
- Pending
Links
Landscapes
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
PURPOSE: As catalysts, are used a salt from specific anion and cation and a macrocyclic polyether, thus permitting the more efficient stabilization of unstabilized polyoxymethylene with an acid anhydride and simultaneously increasing the heat stability of the polyoxymethylene.
CONSTITUTION: When unstabilized polyoxymethylene is stabilized by esterification of the terminal hydroxyl groups with an acid anhydride, a combination of (A) a salt from (a) an anion resulting from removing hydrogen ion from and acid with a dissociation constant of lower than 1.5×10-4 in water at 25°C as formic or benzoic anion, and (b) a cation of alkali, alkalin earth metal or ammonium cation and (B) a macrocyclic polyether that can form a complex with the salt as of formula I and II (m, n are 1W4) is used as the catalyst wherein the amount of component (A) is 0.001W0.01 part per 100 parts of polyoxymethylene and component (B) is 0.2W0.5 mole per mole of component (A).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9947478A JPS5527323A (en) | 1978-08-17 | 1978-08-17 | Method of stabilizing polyoxymethylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9947478A JPS5527323A (en) | 1978-08-17 | 1978-08-17 | Method of stabilizing polyoxymethylene |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5527323A true JPS5527323A (en) | 1980-02-27 |
Family
ID=14248303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9947478A Pending JPS5527323A (en) | 1978-08-17 | 1978-08-17 | Method of stabilizing polyoxymethylene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5527323A (en) |
-
1978
- 1978-08-17 JP JP9947478A patent/JPS5527323A/en active Pending
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