A process for manufacturing a polybenzoxazine monomer, crosslinking the latter, and using the crosslinked product to form an ablative thermal protection system for a thruster nozzle or atmospheric reentry body.

The invention provides for compounds that are HAT activators or inhibitors. The invention further provides a method for treating neurodegenerative diseases, cancer and other malignant conditions, or to increase memory in a subject not suffering from a neurodegenerative disease by administering HAT activators or inhibitors to a subject in need thereof. The method further comprises co-administration of HD AC inhibitors with HAT activators or HD AC activators with HAT inhibitors.

A composition for resist underlayer film formation contains: a first compound including at least one oxazine structure fused to an aromatic ring; and a solvent. The first compound preferably includes a partial structure represented by formula (1). In formula (1), R.sup.2 to R.sup.5 each independently represent a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms; Ar.sup.1 represents a group obtained by removing (n+3) or (n+2) hydrogen atoms on the aromatic ring from an arene having 6 to 20 carbon atoms; R.sup.6 represents a hydroxy group, a halogen atom, a nitro group or a monovalent organic group having 1 to 20 carbon atoms; and n is an integer of 0 to 9. ##STR00001##

A composition for resist underlayer film formation contains: a first compound including at least one oxazine structure fused to an aromatic ring; and a solvent. The first compound preferably includes a partial structure represented by formula (1). In formula (1), R.sup.2 to R.sup.5 each independently represent a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms; Ar.sup.1 represents a group obtained by removing (n+3) or (n+2) hydrogen atoms on the aromatic ring from an arene having 6 to 20 carbon atoms; R.sup.6 represents a hydroxy group, a halogen atom, a nitro group or a monovalent organic group having 1 to 20 carbon atoms; and n is an integer of 0 to 9. ##STR00001##

The present disclosure relates to a composition having a structure that includes

##STR00001##

where R.sub.1 includes at least one of hydrogen, carbon, and/or fluorine, and includes a covalent bond. In some embodiments of the present disclosure, R.sub.1 may include at least one of hydrogen, fluorine, a carboxyl group, a hydroxyl group, an alkoxy group, and/or a hydrocarbon chain. In some embodiments of the present disclosure, the composition may be derived from at least one of

##STR00002##

In some embodiments of the present disclosure, at least a portion of the composition may be bioderived.

Disclosed are dihydrobenzoxazinone compounds, dihydroquinolone compounds, and methods of their synthesis. The disclosed compounds may be prepared by reacting a benzoxazinedione compound and a ketone compound in the presence of an N-heterocyclic carbine (NHC) catalyst to perform a NHC-catalyzed decarboxylative cycloaddition. The disclosed compounds may be utilized to treat diseases and disorders associated with the biological activity of dihydrobenzoxazinone compounds and dihydroquinolone compounds.

Disclosed are dihydrobenzoxazinone compounds, dihydroquinolone compounds, and methods of their synthesis. The disclosed compounds may be prepared by reacting a benzoxazinedione compound and a ketone compound in the presence of an N-heterocyclic carbine (NHC) catalyst to perform a NHC-catalyzed decarboxylative cycloaddition. The disclosed compounds may be utilized to treat diseases and disorders associated with the biological activity of dihydrobenzoxazinone compounds and dihydroquinolone compounds.

The present invention provides an oxazine compound having a specific structure, which contains a group having an aromatic ring structure and a plurality of specified carbon-carbon triple bond structure. The present invention further provides a composition containing the oxazine compound having a specific structure of the present invention, a cured product containing the composition, and a laminate having the layer of the cured product. The present invention further still provides a composition for a heat-resistant material and a composition for an electronic material, which contain the composition containing the oxazine compound of the present invention.

The present invention provides an oxazine compound having a specific structure, which contains a group having an aromatic ring structure and a plurality of specified carbon-carbon triple bond structure. The present invention further provides a composition containing the oxazine compound having a specific structure of the present invention, a cured product containing the composition, and a laminate having the layer of the cured product. The present invention further still provides a composition for a heat-resistant material and a composition for an electronic material, which contain the composition containing the oxazine compound of the present invention.

The present invention provides an oxazine compound having a specific structure, which contains a group having an aromatic ring structure and a plurality of specified carbon-carbon triple bond structure. The present invention further provides a composition containing the oxazine compound having a specific structure of the present invention, a cured product containing the composition, and a laminate having a layer of the cured product. The present invention further still provides a composition for a heat-resistant material and a composition for an electronic material, which contain the composition containing the oxazine compound of the present invention.