JPS55115441A - Stabilization of polyoxymethylene - Google Patents
Stabilization of polyoxymethyleneInfo
- Publication number
- JPS55115441A JPS55115441A JP2183779A JP2183779A JPS55115441A JP S55115441 A JPS55115441 A JP S55115441A JP 2183779 A JP2183779 A JP 2183779A JP 2183779 A JP2183779 A JP 2183779A JP S55115441 A JPS55115441 A JP S55115441A
- Authority
- JP
- Japan
- Prior art keywords
- polyoxymethylene
- cryptand
- catalyst
- alone
- polyethylene glycol
- 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: To enhance heat stability, moderate reaction conditions and reduce a necessary amount of a solvent, through a method wherein polyoxymethylene is stabilized by adding cryptand or a polyethylene glycol derivative to a catalyst such as an alkali metal salt.
CONSTITUTION: (A) A catalyst is formed from (a) an anion obtained by removing H+ from an acid having dissociation constant lower than 1.5×10-4 in water at 25°C and (b) a cation selected from a group of alkali metal cation, alkaline earth metal cation, ammonium ion and substituted ammonium ion, and (B) (c) cryptand and/or (d) a polyethylene glycol derivative forming a complex with (A) are added together with (A) to stabilize (D) polyoxymethylene by (c) acid anhydride. Herein, 0.0005W1pts. of (A) is used to (D) and, moreover, 0.01W100mol of (c) is used to one mole of (A) in case of (C) alone and 0.5W100pts.wt. of (d) is used to 1pts.wt. of (A) in case of (d) alone.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2183779A JPS55115441A (en) | 1979-02-28 | 1979-02-28 | Stabilization of polyoxymethylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2183779A JPS55115441A (en) | 1979-02-28 | 1979-02-28 | Stabilization of polyoxymethylene |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55115441A true JPS55115441A (en) | 1980-09-05 |
Family
ID=12066180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2183779A Pending JPS55115441A (en) | 1979-02-28 | 1979-02-28 | Stabilization of polyoxymethylene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115441A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000017247A1 (en) * | 1998-09-24 | 2000-03-30 | Asahi Kasei Kabushiki Kaisha | Polyoxymethylene copolymer and composition thereof |
-
1979
- 1979-02-28 JP JP2183779A patent/JPS55115441A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000017247A1 (en) * | 1998-09-24 | 2000-03-30 | Asahi Kasei Kabushiki Kaisha | Polyoxymethylene copolymer and composition thereof |
US6506850B1 (en) | 1998-09-24 | 2003-01-14 | Asahi Kasei Kabushiki Kaisha | Polyoxymethylene copolymer and composition thereof |
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