Abstract: Poly (p-pheneylene 2-6 benzobisoxazole) (PBO) compositions that can be used as resins, used as adhesives or adhesive components, used to form films and laminates and used to form foamed articles. The PBO compositions demonstrate high heat resistance, chemical stability, low flammability and low toxic fume generation. Foams can be produced from the PBO compositions that have a range of open and closed cellular structures. The PBO foams have specific densities of from at least about 0.25 lbs/ft3 to at least 50 lbs/ft3.

Abstract: A thermally stable, non-woven, fibrous paper comprising at least one polymer represented by structural formula I: wherein R1-6 are the same or different and comprise H, a hydroxyl group, a straight or branched alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, alkaryl, alkoxy, aryl, aralkyl, alkenyl, or alkynyl group containing approximately 1 to approximately 50 carbon atom(s), carbonyls, esters, carbonates, amides, ketenes, epoxides, a silyl or siloxyl group containing approximately 1 to approximately 50 silicon atom(s), and combinations thereof; wherein X1-4 are the same or different and comprise N, O, S, or Se; and wherein n is an integer ranging in value from 1 to approximately 10,000.

Abstract: A thermally stable, non-woven, fibrous paper comprising at least one polymer represented by structural formula I: wherein R1-6 are the same or different and comprise H, a hydroxyl group, a straight or branched alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, alkaryl, alkoxy, aryl, aralkyl, alkenyl, or alkynyl group containing approximately 1 to approximately 50 carbon atom(s), carbonyls, esters, carbonates, amides, ketenes, epoxides, a silyl or siloxyl group containing approximately 1 to approximately 50 silicon atom(s), and combinations thereof; wherein X1-4 are the same or different and comprise N, O, S, or Se; and wherein n is an integer ranging in value from 1 to approximately 10,000.

Abstract: A thermally stable, non-woven, fibrous paper comprising at least one polymer represented by structural formula I: 1

Abstract: The substitution of a water-based phenolic thermosetting resin for a phenolic thermosetting resin in an organic solvent provides a safer and environmentally improved method for making honeycomb core. Improved processing characteristics in components manufactured from such honeycomb core are observed.