JPS57128710A - Preparation of methyl methacrylate polymer - Google Patents

Preparation of methyl methacrylate polymer

Info

Publication number
JPS57128710A
JPS57128710A JP1412781A JP1412781A JPS57128710A JP S57128710 A JPS57128710 A JP S57128710A JP 1412781 A JP1412781 A JP 1412781A JP 1412781 A JP1412781 A JP 1412781A JP S57128710 A JPS57128710 A JP S57128710A
Authority
JP
Japan
Prior art keywords
methyl methacrylate
monomer
inert gas
oxygen
high temperature
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
Application number
JP1412781A
Other languages
Japanese (ja)
Other versions
JPH0118935B2 (en
Inventor
Jun Nakauchi
Yasuteru Tawara
Takashi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP1412781A priority Critical patent/JPS57128710A/en
Publication of JPS57128710A publication Critical patent/JPS57128710A/en
Publication of JPH0118935B2 publication Critical patent/JPH0118935B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

PURPOSE: To obtain the titled polymer having improved light transmittance, and suitable for light transmitting fibers, by polymerizing a methyl methacrylate monomer, containing substantially no oxygen, and having improved transparency in an inert gas at a high temperature and pressure.
CONSTITUTION: A methyl methacrylate monomer (consisting of the methyl methacrylate essentially) is evaporated by heating in an inert gas in a container 1, and the resultant gas is passed through a rectifying column 4 and filtered through a porous membrane 5, e.g. porous hollow fibers made from polypropylene, and purified to give a monomer, containing substantially no oxygen, and having a Rayleigh ratio R90≤5/6 that of benzene which is a standard sample measured by a light-scattering photometer. An initator, e.g. di-tert-butyl peroxide, in an amount ≤0.05pt. and a chain transfer agent, e.g. n-dodecyl mercaptan, in an amount ≤0.2pt. are added to the monomer, and the polymerization is carried out in an inert gas at a high temperature of 160W250°C and a high pressure of 10W200atm.
COPYRIGHT: (C)1982,JPO&Japio
JP1412781A 1981-02-02 1981-02-02 Preparation of methyl methacrylate polymer Granted JPS57128710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1412781A JPS57128710A (en) 1981-02-02 1981-02-02 Preparation of methyl methacrylate polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1412781A JPS57128710A (en) 1981-02-02 1981-02-02 Preparation of methyl methacrylate polymer

Publications (2)

Publication Number Publication Date
JPS57128710A true JPS57128710A (en) 1982-08-10
JPH0118935B2 JPH0118935B2 (en) 1989-04-07

Family

ID=11852454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1412781A Granted JPS57128710A (en) 1981-02-02 1981-02-02 Preparation of methyl methacrylate polymer

Country Status (1)

Country Link
JP (1) JPS57128710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002163935A (en) * 2000-11-24 2002-06-07 Yazaki Corp Flat type shield harness and manufacturing method of flat type shield harness

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465555A (en) * 1977-10-14 1979-05-26 Du Pont Lowwdamping optical fibers entirely made of plastic

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465555A (en) * 1977-10-14 1979-05-26 Du Pont Lowwdamping optical fibers entirely made of plastic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002163935A (en) * 2000-11-24 2002-06-07 Yazaki Corp Flat type shield harness and manufacturing method of flat type shield harness

Also Published As

Publication number Publication date
JPH0118935B2 (en) 1989-04-07

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