A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.

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A thermally activated delayed fluorescence (TADF) polymeric material having a molecular structure formed by a main chain of a polymerized TADF and a side chain connected to alkyl chains is provided. This structure of the TADF polymeric material has excellent TADF properties and solubility. Further, an electroluminescent device is prepared by solution processing and a good device effect is obtained.

Embodiments of the present disclosure feature an intrinsically microporous ladder-type Tröger's base polymer including a repeat unit based on a combination of W-shaped CANAL-type and V-shaped Tröger's base building blocks, methods of making the intrinsically microporous ladder-type Tröger's base polymer, and methods of using the intrinsically microporous ladder-type Tröger's base polymer to separate a chemical species from a fluid composition including a mixture of chemical species. Embodiments of the present disclosure further include ladder-type diamine monomers for reacting to form a Tröger's base in situ, and methods of making the ladder-type diamine monomers using catalytic arene-norbornene annulation.

An organic-inorganic hybrid composition including a polymer having a triazine ring structure in a main chain of the polymer (A); an inorganic particulate (B); and a surface-treating agent having a triazine ring structure represented by Formula (1)(C): ##STR00001## wherein, in Formula (1), R.sub.1 is a carboxyl group, a phosphoric acid group, a sulfo group, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted amino group, wherein a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm.

There are provided a modified silicone compound prepared by reacting: (A) a siloxane diamine represented by the general formula (1); (B) a maleimide compound with at least two N-substituted maleimide groups in the molecular structure; and (C) an amine compound with an acidic substituent; and also provided a thermosetting resin composition, a prepreg, a laminated plate, and a printed wiring board that are formed by using this compound. The multi-layered printed wiring board produced by using the laminated plate formed by using the prepreg obtained from the modified silicone compound and the thermosetting resin composition of the present invention through laminate molding has an excellent glass transition temperature, coefficient of thermal expansion, copper foil adhesion, hygroscopicity, hygroscopic solder heat resistance, and copper-stuck solder heat resistance. Therefore, the multi-layered printed wiring board is useful as a highly integrated semiconductor package and a printed wiring board for an electronic device. ##STR00001##

The present disclosure provides a photoresist. The photoresist is formed by a crosslinking polymerization reaction between a reactive group-containing biimidazole molecule and a nitrogen-containing compound.

Hydroxyacetal or hydroxyketal monomers, processes for their preparation, their use to produce degradable polymers, hydroxy-functional intermediates resulting from degradation, and repurposed polymers made from the hydroxy-functional intermediates are described. The invention avoids the energy-intensive conditions normally used to degrade polyurethanes and generates new hydroxy-functional intermediates that can be repurposed or upcycled. Polyurethanes and melamines, materials once destined for a landfill, can have a second life. Incorporation of a photoacid generator into microcapsule core materials and fabrication of the shell from the hydroxy-functional acetal or ketal monomers promotes facile, inside-out, solid-state degradation of the microcapsule shell triggered by UV light and acid generation in a hydrophobic environment. This enables controlled release of flavors, fragrances, biocides, agricultural actives, or other oil-based beneficial agents from within the microcapsules.

The present invention relates to a low friction polymerizable composition, a prepolymer thereof, and a friction component material prepared using the same, and the low friction polymerizable composition according to the present invention includes a curing agent and a filler together with a phthalonitrile compound, and thus has an excellent low friction property as well as high heat resistance and excellent processability.

Aspects of the present disclosure provide for bridgehead-substituted triptycene-based diamines and methods of making bridgehead-substituted triptycene-based diamines.

Polyhemiaminal (PHA) and polyhexahydrotriazine (PHT) materials are modified by 1,4 conjugate addition chemical reactions to produce a variety of molecular architectures comprising pendant groups and bridging segments. The materials are formed by a method that includes heating a mixture comprising solvent(s), paraformaldehyde, aromatic amine groups, aliphatic amine Michael donors, and Michael acceptors, such as acrylates. The reaction mixtures may be used to prepare polymer pre-impregnated materials and composites containing PHT matrix resin.