Purification of a poly(phenylene ether) includes contacting a liquid feed solution with a hydrated acidic clay adsorbent under conditions effective to provide a liquid effluent solution. The liquid feed solution includes a poly(phenylene ether), an organic acid impurity, and an amine impurity. The weight average molecular weight of the poly(phenylene ether) of the liquid effluent solution is within 1 percent of the weight average molecular weight of the poly(phenylene ether) of the feed solution, and the concentration of the amine impurity and the organic acid impurity of the liquid effluent solution is reduced by at least 40 percent relative to the concentration of the each impurity in the feed solution. Compositions and articles comprising a purified poly(phenylene ether) are also described.

Polycyclocarbonate compounds and upgraded molecular weight polymers made from such compounds are provided. The polymers have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.

Polycyclocarbonate compounds and upgraded molecular weight polymers made from such compounds are provided. The polymers have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.

The present invention provides a composition for resist underlayer film formation comprising a tellurium-containing compound or a tellurium-containing resin.

Provided is a polyphenylene ether resin composition having excellent heat aging resistance and fluidity. A polyphenylene ether includes at least one structural unit selected from chemical formulae (1), (2), and (3).

Provided is a polyphenylene ether resin composition having excellent heat aging resistance and fluidity. A polyphenylene ether includes at least one structural unit selected from chemical formulae (1), (2), and (3).

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided.

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The present invention provides cross-linking compounds having structures as set forth herein for cross-linking organic polymers. Further, polymer compositions include a cross-linking compound and an organic polymer, and in some embodiments the composition further includes a cross-linking reaction additive for controlling the cross-linking reaction rate. In alternate embodiments, the present invention provides cross-linking compositions including a cross-linking compound and a cross-linking reaction additive capable of forming a reactive intermediate oligomer for cross-linking an organic polymer. Further provided are methods of cross-linking organic polymers, organic polymers formed thereby, and molded articles formed from the cross-linked organic polymers. Additionally, methods for forming high glass transition temperature elastomeric materials and methods for forming extrusion-resistant and creep-resistant materials are provided.

The present invention provides cross-linking compounds having structures as set forth herein for cross-linking organic polymers. Further, polymer compositions include a cross-linking compound and an organic polymer, and in some embodiments the composition further includes a cross-linking reaction additive for controlling the cross-linking reaction rate. In alternate embodiments, the present invention provides cross-linking compositions including a cross-linking compound and a cross-linking reaction additive capable of forming a reactive intermediate oligomer for cross-linking an organic polymer. Further provided are methods of cross-linking organic polymers, organic polymers formed thereby, and molded articles formed from the cross-linked organic polymers. Additionally, methods for forming high glass transition temperature elastomeric materials and methods for forming extrusion-resistant and creep-resistant materials are provided.

The present invention discloses crosslinkable polymer compositions and additive manufacturing compositions incorporating such crosslinkable polymer compositions for use in additive manufacturing methods to prepare articles. The polymer compositions include at least one aromatic polymer and at least one crosslinking compound that is capable of crosslinking the at least one aromatic polymer.