摘要:
A novel method for preparing a thermosetting imide resin composition which consists of chemically reacting a liquid mixture of a carboxy-(CTBN) or vinylidene-(VTBN) polybutadiene/acrylonitrile and a co-reactant comprisinga. at least one N,N'-bisimide of an unsaturated carboxylic acid of general formula I ##STR1## wherein B represents a divalent radical containing a carbon-carbon double bond and A represents a divalent radical having at least two carbon atoms, orb. the imide resin reaction product of an least one N,N'-bisimide of general formula I and at least one primary organic diamine or organic hydrazide, orc. the imide resin reaction product of at least one N,N'-bisimide of general formula I, at least one monoimide, and at least one organic hydrazide,to yield a thermosetting imide resin composition containing copolymerized CTBN or VTBN and co-reactant. A resin composition prepared by this method may be cured at a temperature between 100.degree. C. and 350.degree. C. to yield a full cross-linked polyimide matrix containing a dispersion of phase-separated solid particles of copolymerized CTBN or VTBN and co-reactant.
摘要:
Curable thermosetting prepolymerized imide resin compositions are prepared by chemically reacting, at a temperature below 150.degree. C., a liquid mixture of carboxy-terminated polybutadiene/acrylonitrile (CTBN) and a co-reactant comprising at least one N,N'-bisimide of an unsaturated carboxylic acid of formula (I) where B represents a divalent radical containing a carbon-carbon double bond and A represents a divalent radical having at least two carbon atoms to yield a curable thermosetting prepolymerized imide resin composition containing copolymerized CTBN and co-reactant. A resin composition prepared by this method may be cured at a temperature between 100.degree. C. and 350.degree. C. to yield a fully cross-linked polyimide matrix containing a dispersion of phase-separated solid particles of copolymerized CTBN and co-reactant, the matrix having a lapshear strength at 20.degree. C. at least 50% greater than that of a fully cross-linked polyimide cured from the co-reactant alone.
摘要:
A curable thermosetting prepolymerized imide resin composition is prepared by chemically reacting, at a temperature below 150.degree. C., a liquid mixture of a carboxy-terminated polybutadiene/acrylonitrile (CTBN) and a co-reactant containing at least one N,N'-bisimide of an unsaturated carboxylic acid of general formula (I) ##STR1## where B represents a divalent radical containing a carbon-carbon double bond and A represents a divalent radical having at least two carbon atoms, at least one monoimide, and at least one organic hydrazide, to yield a curable thermosetting prepolymerized imide resin composition containing copolymerized CTBN and co-reactant. A resin composition prepared by this method may be cured at a temperature between 100.degree. C. and 350.degree. C. to yield a fully cross-linked polymimide matrix containing a dispersion of phase-separated solid particles of copolymerized CTBN and co-reagent, said matrix having a lap shear strength at 20.degree. C. at least 50% greater than that of a fully cross-linked polyimide cured from the co-reactant alone.