JPS5780414A - Shortstopping of polymerization reaction - Google Patents
Shortstopping of polymerization reactionInfo
- Publication number
- JPS5780414A JPS5780414A JP15785880A JP15785880A JPS5780414A JP S5780414 A JPS5780414 A JP S5780414A JP 15785880 A JP15785880 A JP 15785880A JP 15785880 A JP15785880 A JP 15785880A JP S5780414 A JPS5780414 A JP S5780414A
- Authority
- JP
- Japan
- Prior art keywords
- crude polymer
- polymer
- shortstop
- polymerization catalyst
- crude
- 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.)
- Granted
Links
Landscapes
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
PURPOSE: To prevent the depolymerization of a crude polymer obtained by polymerizing trioxan, by adding a specified amount of a shortstop to the crude polymer and, thereafter, pulverizing the polymer.
CONSTITUTION: A crude polymer is obtained by polymerizing trioxan or its mixture with a cyclic ether and/or a cyclic acetal in the presence of at least one polymerization catalyst selected from the group consisting of BF3 (hydrate) and a coordinated complex between an O- and S-containing organic compound and BF3. Next, this crude polymer is mixed with a shortstop which deactivates the polymerization catalyst by forming a complex with it, e.g., ethylamine, or its organic solvent solution in an amount, as shortstop, corresponding to 0.5W 30 times, by mol, the polymerization catalyst and to 0.01W5wt% of the crude polymer. The resulting mixture is pulverized within 2hr so that the proportion of the polymer particles passing through a 10-mesh (ASTM) screen is 100%.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55157858A JPS5851014B2 (en) | 1980-11-10 | 1980-11-10 | How to stop polymerization reaction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55157858A JPS5851014B2 (en) | 1980-11-10 | 1980-11-10 | How to stop polymerization reaction |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5780414A true JPS5780414A (en) | 1982-05-20 |
JPS5851014B2 JPS5851014B2 (en) | 1983-11-14 |
Family
ID=15658912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55157858A Expired JPS5851014B2 (en) | 1980-11-10 | 1980-11-10 | How to stop polymerization reaction |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5851014B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363741A (en) * | 1986-09-05 | 1988-03-22 | Toray Ind Inc | Oxymethylene copolymer composition |
JPH03128911A (en) * | 1989-10-16 | 1991-05-31 | Asahi Chem Ind Co Ltd | Stabilized polyacetal resin molding and its preparation |
US5726276A (en) * | 1995-10-02 | 1998-03-10 | Polyplastics Co., Ltd. | Process for preparing polyacetal copolymer |
US5866670A (en) * | 1995-08-21 | 1999-02-02 | Polyplastics Co., Ltd. | Process for preparing polyacetal copolymer |
CN1105127C (en) * | 1996-09-30 | 2003-04-09 | 汎塑料株式会社 | Process for producing stabilized oxymethylene copolymer |
US7812110B2 (en) | 2005-12-24 | 2010-10-12 | Ticona Gmbh | Process for preparation of oxymethylene polymers, selected polymers, and their use |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59185134U (en) * | 1983-05-27 | 1984-12-08 | 株式会社クボタ | Structure of engine exhaust treatment section of work vehicle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55157857A (en) * | 1979-05-28 | 1980-12-08 | Tokyo Shibaura Electric Co | Reflecting type lamp |
JPS55164212A (en) * | 1979-05-18 | 1980-12-20 | Mitsubishi Gas Chem Co Inc | Continuous polymerization of oxymethylene (co) polymer |
-
1980
- 1980-11-10 JP JP55157858A patent/JPS5851014B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55164212A (en) * | 1979-05-18 | 1980-12-20 | Mitsubishi Gas Chem Co Inc | Continuous polymerization of oxymethylene (co) polymer |
JPS55157857A (en) * | 1979-05-28 | 1980-12-08 | Tokyo Shibaura Electric Co | Reflecting type lamp |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363741A (en) * | 1986-09-05 | 1988-03-22 | Toray Ind Inc | Oxymethylene copolymer composition |
JPH0643544B2 (en) * | 1986-09-05 | 1994-06-08 | 東レ株式会社 | Oxymethylene copolymer composition |
JPH03128911A (en) * | 1989-10-16 | 1991-05-31 | Asahi Chem Ind Co Ltd | Stabilized polyacetal resin molding and its preparation |
US5866670A (en) * | 1995-08-21 | 1999-02-02 | Polyplastics Co., Ltd. | Process for preparing polyacetal copolymer |
CN1078218C (en) * | 1995-08-21 | 2002-01-23 | 汎塑料株式会社 | Process for preparing polyacetal copolymer |
US5726276A (en) * | 1995-10-02 | 1998-03-10 | Polyplastics Co., Ltd. | Process for preparing polyacetal copolymer |
CN1105127C (en) * | 1996-09-30 | 2003-04-09 | 汎塑料株式会社 | Process for producing stabilized oxymethylene copolymer |
US7812110B2 (en) | 2005-12-24 | 2010-10-12 | Ticona Gmbh | Process for preparation of oxymethylene polymers, selected polymers, and their use |
Also Published As
Publication number | Publication date |
---|---|
JPS5851014B2 (en) | 1983-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5634704A (en) | Curable composition | |
JPS5780414A (en) | Shortstopping of polymerization reaction | |
JPS5222080A (en) | Preparation of polyolefin | |
JPS5213593A (en) | Preparation of polyester-modified vinyl polymer for solvent type coati ng composition with high solid content | |
JPS55112260A (en) | Manufacture of graft copolymer | |
JPS5780415A (en) | Production of oxymethylene copolymer | |
CA2100850A1 (en) | Polyhydroxyl compounds, a process for their production and their use in coating compositions | |
JPS5742724A (en) | Curable composition | |
JPS57143524A (en) | Preparation of molded polyester article | |
JPS534086A (en) | Preparation of aqueous polymers | |
DE1595582A1 (en) | Process for the production of polyethers | |
ES467284A1 (en) | Preparation of polyvinyl chloride resins | |
Sepulchre et al. | Stereospecific polymerization of cyclohexene oxide | |
JPS56127625A (en) | Crosslinking agent | |
JPS5736106A (en) | Preparation of polymer of 2-chloro-1-phenylacetylene | |
JPS5599068A (en) | Filler for liquid chromatography | |
JPS5798595A (en) | Coal oil mixture | |
JPS546099A (en) | Preparation of modified unsaturated polyester | |
JPS52115848A (en) | One-pack type, curable high polymer composition | |
JPS5670049A (en) | Modified coumarone resin composition | |
JPS5630419A (en) | Preparation of petroleum resin from c5-fraction | |
JPS53134899A (en) | Preparation of polyfunctional liquid polymer | |
JPS57112384A (en) | Intermediate of mugineic acid and its preparation | |
JPS5629582A (en) | Stabilization of glycidol | |
GB1487123A (en) | Cyanato-group-containing phenol resin manufacturing process thereof and compositions containing said resin |