Patent ID: 6225373
Filing Date: 2001-05-01
Classification: C08G,C08L,H05K,Y10S

Abstract:
A curable material comprising:a bromine-containing thermoset material, optionally containing fluorine, said thermoset material comprising different monomers, prepolymers of said monomers, or blends of monomers with different monomers or blends of the same or different monomers with prepolymers and, a bromine-containing homo- or multicomponent thermoplastic polymer having a repeating structural element containing:1-99 mol % of a repeating structural element of the formula (IX), ##STR41##and 99-1 mol % of a repeating structural element of the formula (X) ##STR42##and 99-0 mol % of a repeating structural element of the formula (XI) ##STR43##wherein X is any group capable of reacting with an epoxide, nadimide, maleimide, amine, acetylene, propargyl benzocyclobutene; and n=1 to 100; andwherein R.sub.1 represents bivalent aromatic groups of the formulas (XIIa)-(XIIe) ##STR44##wherein Y represents --CO--, --PO(C.sub.6 H.sub.5)--, --SO-- or SO.sub.2, p signifies the number 0, 1 or 2 and q is the number 2 or 3, and R.sub.2, R.sub.3 and R.sub.4 signify a bivalent aromatic group of the formulas (XIIIa) to (XIIIr) ##STR45## ##STR46##wherein Q represents a direct bond, --CH.sub.2 --, --O-- or --CO--, and Z represents --CH.sub.2 --, --C(CH.sub.2).sub.2 --, --C(CH.sub.3) (C.sub.6 H.sub.5)--, --C(CF.sub.3).sub.2 --, --PO(C.sub.6 H.sub.5)--, --C(CF.sub.3) (C.sub.6 H.sub.5)--, --S--, --O--, --SO.sub.2 -- or --CO--,wherein the aromatic rings of the formulas (XIIa)-(XIIe) are unsubstituted or are substituted by one or more halogen atoms and/or (C.sub.1 -C.sub.5) alkyl groups which may be halogen-containing or (C.sub.1 -C.sub.5) alkoxy groups which may be halogen-containing and,wherein the aromatic rings of the formulas (XIIIa)-(XIIIr) are unsubstituted or are substituted by one or more halogen atoms and/or (C.sub.1 -C.sub.5) alkyl groups or (C.sub.1 -C.sub.5) alkoxy groups which may be halogen-containing all of Which my be branched or straight-chain oriented; andwherein the formulas (IX), (X), and (XI) R.sub.1 represents ##STR47##and R.sub.2, R.sub.3 and R.sub.4 in the formula represent ##STR48## ##STR49##wherein the aromatic rings are unsubstituted or substituted by one or more halogen atoms and/or (C.sub.1- C.sub.5) alkyl groups which may contain bromine or (C.sub.1 -C.sub.5) alkoxy groups which may contain bromine;said polymer optionally containing fluorine or other halogen, said material being heat curable at temperatures between about 100.degree. C. and 325.degree. C.;said material in the cured state having a toughness greater than about 100 Joules per square meter comprising a bromine-containing polymer network having a plurality of discrete phrases of said bromine-containing homo- or multicomponent thermoplastic polymer dispersed therein;said homo or multicomponent bromine-containing thermoplastic polymer phases ranging from submicron to micron size.