Method for modifying the surface of polycarbonate resin
AssigneesNippon Oil and Fats Co., Ltd., PPG Industries, Inc.
InventorsRikizo Kobashi, Shigeyuki Takase, Hiroyuki Enomoto, Yasushi Hayasaki, Toyohisa Kobayashi, Shingo Yamazaki
Life of this patent
Estimating the term…
Abstract
A polycarbonate resin of a copolymer of diethyleneglycol bis(allyl carbonate) with one of glycidyl acrylate and glycidyl methacrylate, its homopolymer and its copolymer, and further occasionally a copolymerizable compound can be easily modified with active amine at its surface, and the surface-modified copolymer of diethylene glycol bis(allyl carbonate) with glycidyl acrylate or methacrylate can be easily dyed with acid dye in a sharp color tone and can be used in an optical instrument demanded to have a high vividness of color.
Claims3
A method of modifying a surface of a polycarbonate resin, comprising
- providing a polycarbonate resin consisting of a copolymer having components (A), (B), and (C) or (D) or (C) and (D), said copolymer having 50 to 99% by weight of component (A), which is diethylene glycol bis(allyl carbonate), 1 to 50% by weight of component (B), which is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, homopolymers thereof, and copolymers thereof with a monomer copolymerizable therewith, and up to 49% by weight of component (C) or component (D) or component (C) and component (D), component (C) being a reactive vinyl monomer copolymerizable with component (A) or (B), and component (D) being a polymer that can be dissolved or dispersed in component (A), (B) or (C), and
- modifying a surface of said polycarbonate resin with an amine having an active hydrogen atom.
Dependencies are inferred from the claim text.