摘要:
Provided is a polycarbonate resin composition comprising: a polycarbonate resin comprising a constituent unit having an alicyclic hydrocarbon site where a carbonate group is linked to two carbon atoms that constitute a ring and are adjacent to each other; and one or two or more compounds selected from the group consisting of a compound having an amide bond, a sulfur compound, and a phosphite ester compound, wherein weight-average molecular weight Mw of the polycarbonate resin measured by size-exclusion chromatography using polystyrene as a standard sample is 50,000 or larger and 500,000 or smaller.
摘要:
The present invention relates to a copolycarbonate resin composition having improved mechanical properties such as impact resistance and chemical resistance while maintaining resin flowability, and an article including the same.
摘要:
A copolycarbonate which is derived from a renewable resource and excellent in heat resistance, flowability and transparency and prevented from undergoing a dimensional change by water absorption and coloring during molding as well as a transparent molded article obtained therefrom.The copolycarbonate comprises predetermined amounts of a unit (A) constituted of an ether diol residue represented by the following formula (1), a unit (B) constituted of a bisphenol residue represented by the following formula (2), and a unit (C) constituted of another diol residue, wherein the ratio of terminal groups falls within the ranges of the following expressions (i) and (ii). (i) 0.001
摘要:
Disclosed herein are indane bisphenol monomer units, and polymers derived from such monomer units. Also disclosed herein are blends including such polymers, articles made from such polymers and blends, methods of using such monomers, polymers, and blends, and processes for preparing such monomers, polymers, and blends.
摘要:
A composition of macrocyclic oligomer with at least one (meth)acrylate polymerizable group. A method includes preparing an activated precursor of an oligomer at pseudo high-dilution conditions. A method also includes preparing an activated precursor of an oligomer by reacting the precursor with an activated coupling agent, wherein the precursor is condensable and polymerizable.
摘要:
The present disclosure relates to a xanthene derivative compound with a high refractive index and a manufacturing method therefor. More specifically, provided herein is a compound that has a xanthene-based complex cardo structure and a high refractive index and can be used as a monomer in optical resins requiring a refractive index of 1.7 or higher, and a (co)polymer and an optical lens manufactured therefrom. Given, the xanthene-based complex cardo structure of the compound maximally suppresses the fluidity of the molecular chains and can find applications in the production of resins with high glass transition temperature and excellent thermal stability.