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.

A polymerizable composition, a prepolymer, a phthalonitrile resin, or a composite provided herein has excellent heat resistance and does not cause defects that may adversely affect physical properties. In addition, the polymerizable composition exhibits appropriate curing properties, processing temperatures and process windows and to be capable of forming a composite of excellent physical properties.

This disclosure describes new compositions and methods related to photoresponsive poly(hexahydrotriazines) and related polymers.

A resin composition according to the present invention contains a cyanate compound (A). Further, the resin composition according to the present invention contains a maleimide compound (B) and/or an epoxy resin (C); and primary hexagonal boron nitride particles (D) having an average aspect ratio of 4 to 10.

Methods of forming nanoporous materials are described herein that include forming a polymer network with a chemically removable portion. The chemically removable portion may be polycarbonate polymer that is removable on application of heat or exposure to a base, or a polyhexahydrotriazine (PHT) or polyhemiaminal (PHA) polymer that is removable on exposure to an acid. The method generally includes forming a reaction mixture comprising a formaldehyde, a solvent, a primary aromatic diamine, and a diamine having a primary amino group and a secondary amino group, the secondary amino group having a base-reactive substituent, and heating the reaction mixture to a temperature of between about 50 deg C. and about 150 deg C. to form a polymer. Removing any portion of the polymer results in formation of nanoscopic pores as polymer chains are decomposed, leaving pores in the polymer matrix.

The present application relates to a phthalonitrile resin, a polymerizable composition, a prepolymer, a composite, and a preparation method and use thereof. The present application can provide phthalonitrile, and a polymerizable composition and prepolymer using the same, which can have excellent curability, exhibit a suitable processing temperature and a wide window process, and form a composite having excellent physical properties.

Provided is a composition for forming a protective film for a transparent conductive film, said composition comprising a triazine ring-containing hyperbranched polymer comprising a repeating unit structure represented by formula (1) and a crosslinking agent having a molecular weight of 1,000 or greater. ##STR00001##
In formula (1): R and R independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or an aralkyl group; and Ar represents a definite aromatic ring-containing group.

Methods of preparing phthalonitrile coating compositions are provided, including phthalonitrile sprays, phthalonitrile pastes, and phthalonitrile composite films. In embodiments, such a method comprises, heating a phthalonitrile precursor composition comprising a bisphthalonitrile compound to a temperature and for a period of time to form a phthalonitrile prepolymer composition comprising a bisphthalonitrile prepolymer; cooling the phthalonitrile prepolymer composition to ambient temperature and pulverizing the phthalonitrile prepolymer composition to form particles; combining the particles with a liquid medium to form a phthalonitrile solution; optionally, adding an additive to the phthalonitrile solution; and mixing the phthalonitrile solution to form a phthalonitrile coating composition.

In some embodiments, a product, such as a thermoset, has a polyhexahydrotriazine and a self-polymerized cross-linkable polymer. In some embodiments, a product is the reaction product of a diamine, an aldehyde, and a compound having an ?,?-unsaturated electron withdrawing moiety.

The present disclosure discloses a post spacer, which is applied to a liquid crystal display panel. The post spacer has a material having a structure as represented by Formula 1, wherein X includes at least one of groups represented by Formulae 2-1 to 2-5; Y includes at least one of groups represented by Formulae 3-1 and 3-2; at least one of the X and the Y has a molecular chain end having a group capable to chemically cross-link with materials of alignment layers; and at least one of the X and the Y has a side chains having a group capable to generate a hydrogen bond or intermolecular force with a material of liquid crystal molecules. The present disclosure also discloses a liquid crystal display panel having the post spacers described above and a method of manufacturing the same.