Modified polyphenylene ether, method for preparing same, polyphenylene ether resin composition, resin varnish, prepreg, metal-clad laminate and printed circuit board
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYuki Kitai, Hiroaki Fujiwara
Life of this patent
Estimating the term…
Abstract
A modified polyphenylene ether according to one aspect of the invention has an intrinsic viscosity, as measured in 25° C. methylene chloride, of from 0.03 to 0.12 dL/g, has on molecular ends thereof an average of 1.5 to 3 groups represented by formula (1) below per molecule, and includes not more than 5 mass % of a high-molecular-weight component having a molecular weight of 13,000 or more. In formula (1), R1 is a hydrogen atom or an alkyl group of 1 to 10 carbons, and R2 is an alkylene group of 1 to 10 carbons.
Claims15
A modified polyphenylene ether having groups represented by formula (1) below on molecular ends of a polyphenylene ether represented by formula (4) below,
- having an intrinsic viscosity, as measured in 25° C. methylene chloride, of from 0.03 to 0.12 dL/g, having on molecular ends thereof an average of 1.5 to 3 groups represented by formula (1) below per molecule, and including not more than 5 mass % of a high-molecular-weight component having a molecular weight of 13,000 or more:
- where R1 is a hydrogen atom or an alkyl group of 1 to 10 carbons, and R2 is an alkylene group of 1 to 10 carbons, and
- where s is from 1 to 20, t is from 1 to 20, and the combined value of s and t is from 1 to 30.
Dependencies are inferred from the claim text.