Industrial Technology Research Institute

Hsuan-Wei Lee

Li-Duan Tsai

Chiu-Tung Wang

Cheng-Hsiu Tsai

Wei-Ta Yang

Chung-Cheng Lin

Chiu-Hun Su

I-Hong Lin

Chi-Wei Chen

Hou Yuan Chen

Tzu-Ying Chen

The present disclosure provides a polymer, including a first repeating unit represented by formula (I), a second repeating unit represented by formula (II), and a third repeating unit represented by formula (III). The first repeating unit, the second repeating unit, and the third repeating unit are arranged in an alternating fashion, in a random fashion, or in discrete blocks. The molar ratio of the first repeating unit, the second repeating unit and the third repeating unit is m:n:o, and m:(n+o) is from 60:40 to 85:15. The definitions of a, R, R, A, and Rare as defined in the specification.

Polymer, ion-exchange membrane, and structure-enhanced membrane employing the same

A crosslinked copolymer is provided, which includes a copolymer crosslinked by a crosslinking agent. The copolymer is copolymerized of (a) styrene-based monomer, (b) monomer having conjugated double bonds or acrylate ester monomer, and (c) ammonium-containing heterocyclic monomer. The crosslinking agent is (d) or the product of the reaction between and (e) or a combination thereof. Z is wherein each Ris independently H or Calkyl group, each Ris independently H or Calkyl group, Ris single bond, &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CH&#x2014;, or &#x2014;NH&#x2014;. n is a positive integer. x is 1 to 12, y is 1 to 5, and z is 1 to 5.

Crosslinked copolymer and ionic exchange film

An aqueous-phase catalyst composition including a metal ion including copper, nickel, manganese or iron and a water-soluble linear polymer having a molecular weight ranging from 1,000 to 20,000 is provided. The metal ion and the water-soluble linear polymer have a weight ratio of 1:1 to 1:5. A method for preparing polyphenylene ether including providing the disclosed aqueous-phase catalyst composition and adding phenolic monomers to the aqueous-phase catalyst composition to proceed to a polymerization reaction to prepare polyphenylene ether is also provided.

Aqueous-phase catalyst compositions and method for preparing polyphenylene ether

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Zhudong, Taiwan

Hsuan-Wei Lee