Cycloolefin resin cured product having oxygen barrier properties
AssigneeRimtec Corporation
InventorsNaoki Fukumoto, Nobuhito Kamei
Life of this patent
Estimating the term…
Abstract
Provided is a cycloolefin resin cured product having oxygen barrier properties prepared through bulk polymerization of a polymerizable composition comprising a cycloolefin monomer and a metathesis polymerization catalyst, wherein the cycloolefin monomer includes a norbornene-based monomer (a), the polymerizable composition comprises an antioxidant in an amount of 0.3% by mass or less, and the cycloolefin resin cured product has an oxygen permeability at 23° C. of less than 50 mL/m2·day·atm (100 μm).
Claims12
A cycloolefin resin cured product having oxygen barrier properties prepared through bulk polymerization of a polymerizable composition comprising a cycloolefin monomer and a metathesis polymerization catalyst,
- wherein the cycloolefin monomer includes a norbornene-based monomer (a),
- the norbornene-based monomer (a) contains a tricyclic compound of 80 to 95% by mass and a pentacyclic compound of 5 to 20% by mass,
- an antioxidant is not substantially contained in the polymerizable composition,
- the cycloolefin resin cured product has a surface at least partially including an oxide film of the cycloolefin resin cured product, and
- the cycloolefin resin cured product has an oxygen permeability at 23° C. of less than 50 mL/m2·day·atm (100 μm).
Dependencies are inferred from the claim text.