JPH1087706A5 - - Google Patents
Info
- Publication number
- JPH1087706A5 JPH1087706A5 JP1996249821A JP24982196A JPH1087706A5 JP H1087706 A5 JPH1087706 A5 JP H1087706A5 JP 1996249821 A JP1996249821 A JP 1996249821A JP 24982196 A JP24982196 A JP 24982196A JP H1087706 A5 JPH1087706 A5 JP H1087706A5
- Authority
- JP
- Japan
- Prior art keywords
- polymerization
- solvent
- monomer
- polymerized
- methyl methacrylate
- 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
Description
【００１９】
メタクリル系樹脂の重合温度としては、一般的な１２０−１６０℃の範囲内の温度が好ましい。重合温度が１２０℃未満であれば、重合が遅すぎ、また１６０℃を越えると転化率の調整が困難となるため好ましくない。
本発明の連続溶液重合プロセスの一例を図１で説明する。
（Ａ）新たなメタクリル酸メチルを主成分とする単量体１と重合後の未反応メタクリル酸メチルを主成分とする単量体及び溶媒を含むリサイクル液９とを連続して蒸留塔２へ供給し、蒸留された単量体及び溶剤、更に重合開始剤、分子量調整剤を連続して重合反応機５に供給、重合し、次いで重合液を脱揮タンク８で脱揮して重合物１０を取り出すと同時に未反応のビニル単量体及び溶媒をリサイクル使用して連続溶液重合する。又は（Ｂ）重合後の未反応メタクリル酸メチルを主成分とする単量体及び溶媒を含むリサイクル液９を連続して蒸留塔２へ供給し、蒸留されたメタクリル酸メチルを主成分とする単量体及び溶剤と新たなメタクリル酸メチルを主成分とする単量体１及び溶剤、更に重合開始剤、分子量調整剤を連続して重合反応機５に供給、重合し、次いで重合液を脱揮タンク８で脱揮して重合物を取り出すと同時に未反応のビニル単量体及び溶媒をリサイクル使用して連続溶液重合する。 [0019]
The polymerization temperature of the methacrylic resin is preferably a temperature in the general range of 120 to 160° C. If the polymerization temperature is less than 120° C., the polymerization is too slow, and if it exceeds 160° C., it is difficult to adjust the conversion rate, which is not preferable.
An example of the continuous solution polymerization process of the present invention is illustrated in FIG.
(A) Fresh monomer 1 containing methyl methacrylate as the main component and a recycled liquid 9 containing unreacted methyl methacrylate-based monomer and solvent after polymerization are continuously fed to distillation column 2, the distilled monomer and solvent, as well as a polymerization initiator and a molecular weight modifier, are continuously fed to polymerization reactor 5 and polymerized, the polymerized liquid is then devolatilized in devolatilization tank 8, polymerized product 10 is taken out, and at the same time, the unreacted vinyl monomer and solvent are recycled for continuous solution polymerization. Or (B) Fresh monomer 1 containing methyl methacrylate as the main component and solvent after polymerization are continuously fed to distillation column 2, the distilled monomer and solvent, fresh monomer 1 containing methyl methacrylate as the main component and solvent, as well as a polymerization initiator and a molecular weight modifier are continuously fed to polymerization reactor 5 and polymerized, the polymerized liquid is then devolatilized in devolatilization tank 8, polymerized product is taken out, and at the same time, the unreacted vinyl monomer and solvent are recycled for continuous solution polymerization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24982196A JP3779777B2 (en) | 1996-09-20 | 1996-09-20 | Method for producing methacrylic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24982196A JP3779777B2 (en) | 1996-09-20 | 1996-09-20 | Method for producing methacrylic resin |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH1087706A JPH1087706A (en) | 1998-04-07 |
| JPH1087706A5 true JPH1087706A5 (en) | 2004-09-30 |
| JP3779777B2 JP3779777B2 (en) | 2006-05-31 |
Family
ID=17198695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24982196A Expired - Lifetime JP3779777B2 (en) | 1996-09-20 | 1996-09-20 | Method for producing methacrylic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3779777B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5568841B2 (en) | 2008-04-08 | 2014-08-13 | 住友化学株式会社 | Methacrylic resin composition for hot plate fusion |
| JP7642908B1 (en) * | 2024-05-10 | 2025-03-10 | 住友化学株式会社 | Composition, polymer, cured product, molded product, and method for producing polymethyl methacrylate |
-
1996
- 1996-09-20 JP JP24982196A patent/JP3779777B2/en not_active Expired - Lifetime
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