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JPS646013A - Block polymer - Google Patents

Block polymer

Info

Publication number
JPS646013A
JPS646013A JP16134087A JP16134087A JPS646013A JP S646013 A JPS646013 A JP S646013A JP 16134087 A JP16134087 A JP 16134087A JP 16134087 A JP16134087 A JP 16134087A JP S646013 A JPS646013 A JP S646013A
Authority
JP
Japan
Prior art keywords
copolymer
component
polymerizing
segment
accounting
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
Application number
JP16134087A
Other languages
Japanese (ja)
Inventor
Masahiro Sugimori
Haruko Takeda
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 JP16134087A priority Critical patent/JPS646013A/en
Publication of JPS646013A publication Critical patent/JPS646013A/en
Pending legal-status Critical Current

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  • Eyeglasses (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

PURPOSE:To obtain the titled copolymer having a specific molecular weight and an ABA-type structure wherein A is alkyl methacrylate and B is 2- hydroxymethyl acrylate, having excellent transparency, oxygen-permeability and bio-compatibility, etc., and useful as contact lens, etc. CONSTITUTION:A block copolymer expressed by formula A-B-A and having a number-average molecular weight of >=30,000 is produced by using a monomer consisting of (A) a segment A containing a compound of formula (R<1> is 1-4C alkyl, fluoroalkyl, etc.) (e.g. methyl methacrylate) accounting for >=80wt.% of the constituent monomer units and (B) a segment B containing 2-hydroxyethyl methacrylate accounting of >=80wt.% of the constituent monomer units, polymerizing the component B using a polymerization initiator such as [(2-methoxy-2- methyl-1-propenyl)oxy]trimethylsilane, adding the component A to the polymerization product and polymerizing the mixture to obtain the objective copolymer wherein the number-average molecular weights of the components A and B are 5,000-50,000 each and the weight ratio of the component B to the whole copolymer is 20-70%.
JP16134087A 1987-06-30 1987-06-30 Block polymer Pending JPS646013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16134087A JPS646013A (en) 1987-06-30 1987-06-30 Block polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16134087A JPS646013A (en) 1987-06-30 1987-06-30 Block polymer

Publications (1)

Publication Number Publication Date
JPS646013A true JPS646013A (en) 1989-01-10

Family

ID=15733220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16134087A Pending JPS646013A (en) 1987-06-30 1987-06-30 Block polymer

Country Status (1)

Country Link
JP (1) JPS646013A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386249A1 (en) * 1988-07-08 1990-09-12 Mitsubishi Rayon Co., Ltd. Oxygen-permeable molding and process for its production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386249A1 (en) * 1988-07-08 1990-09-12 Mitsubishi Rayon Co., Ltd. Oxygen-permeable molding and process for its production
US5177167A (en) * 1988-07-08 1993-01-05 Mitsubishi Rayon Co., Ltd. Oxygen-permeable shaped articles and process for producing same

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