摘要:
Durch Erhitzen oberhalb des Schmelzpunktes bzw. Glaspunktes und Zusatz eines Bismaleinimides und eines sterisch gehinderten Hydroxyphenyl-alkyl-phosphonsäure-esters bzw. -halbesters lässt sich eine Molekulargewichtserhöhung von Neu-Polyamid und Polyamid-Recyclaten erreichen.
摘要:
A thermosetting resin composition comprising (a) an aromatic polyamide oligomer having polymerizable unsaturated groups on both terminals or the side chains, (b) a maleimide compound, and (c) an epoxy resin; and a process for producing a copper-clad laminated board by impregnating a base material with the composition and bonding the resultant base material to copper foil under pressure. The copper foil can be tightly bonded to give a copper-clad laminated board excellent in heat resistance and electrical characteristics.
摘要:
A polyimide resin composition for molding, which comprises a polyimide resin and an aromatic bisimide compound and has a melt flowability and an excellent processability in addition to the heat resistance inherent in polyamide; a carbon fiber-reinforced polyimide resin composition which comprises a polyimide resin and carbon fibers coated with an aromatic bisimide compound and has excellent mechanical strengths; and novel bisimide compounds represented by general formula (I), which are very useful as the aromatic bisimide compounds in the above resin compositions, wherein X represents a direct bond, C1 to C10 divalent hydrocarbyl, hexafluoroisopropylidene, carbonyl, thio or sulfonyl; Y1 to Y4 represent each independently hydrogen, lower alkyl, lower alkoxy, chlorine or bromine; and R represents a divalent group selected from the group consisting of monocyclic aromatic groups, fused polycyclic aromatic groups, and nonfused polycyclic aromatic groups wherein aromatic groups are linked together directly or through cross-linking member(s).