Abstract Solid burn-resistant polymeric compositions are formed by reacting substances such as Cl(PNCl2)9PCl4 and (PNCl2)3 4 with epoxy resins to form PNCl2-epoxy pre polymers. These prepolymers are blended with orgainc liquid prepolymers such as phenolics, epoxies, polyurethanes and polyesters and the blends are cured to form fire resistant plastics, wherein initial P,N, and Cl contents are wholly retained. Those two components, i.e., PNCl2 component and epoxy resin are admixed with liquid organic prepolymers (and polymerization catalysts therefor) and the system is then cured, usually by heating, whereby the PNCl2-epoxy polymer is formed in situ along with the matrix polymer, or in some cases chemically bonded to the organic polymeric crosslinked plastic.
A SOLID POLYMERIC FIRE-RETARDANT ADDITIVE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A MEMBER OF THE GROUP CONSISTING OF CYCLIC (PNX2)Y WHERE X IS A HAOGEN ATOM AND Y IS AT LEAST 3 AND LINEAR X(PNX2)YPX4 WHERE X IS A HALOGEN ATOM AND Y IS AT LEAST 1; AND (B) A COMPOUND CONTAINING AT LEAST TWO OXIRANE GROUPS, THE EQUIVALENT RATIO OF (A) TO (B) BEING IN THE RANGE 0.1-2.0:1.0 RESPECTIVELY.
Claim 2
Dependent Claim
72 words
A SOLID POLYMERIC FIRE-RETARDANT ADDITIVE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A MEMBER OF THE GROUP CONSISTING OF CYCLIC (PNX2)Y WHERE X IS A HAOGEN ATOM AND Y IS AT LEAST 3 AND LINEAR X(PNX2)YPX4 WHERE X IS A HALOGEN ATOM AND Y IS AT LEAST 1; AND (B) A COMPOUND CONTAINING AT LEAST TWO OXIRANE GROUPS, THE EQUIVALENT RATIO OF (A) TO (B) BEING IN THE RANGE 0.1-2.0:1.0 RESPECTIVELY.
Claim 3
Dependent Claim
13 words
A process for preparing a solid polymeric fire-retardant additive comprising the steps of:
Claim 4
Dependent Claim
13 words
A process for preparing a solid polymeric fire-retardant additive comprising the steps of:
Claim 5
Dependent Claim
23 words
heating said admixture at a temperature between about 0* to 250*C whereby material (a) cures said compound (b) thus forming a fire-retardant additive.
Claim 6
Dependent Claim
23 words
heating said admixture at a temperature between about 0* to 250*C whereby material (a) cures said compound (b) thus forming a fire-retardant additive.