Abstract: Novel phosphonic acid-containing compounds such as (2-(4-ethylphenyl)ethenyl)-phosphonic acid and esters thereof are disclosed. A method preparation of the phosphonic acids comprising contacting a diethylenically unsaturated aromatic compound and phosphorus pentachloride in the present of sulfur dioxide is also disclosed. The compounds of this invention are useful as monomers for the preparation of polymers having enhanced anti-corrosive properties.

Abstract: Novel phosphonic acid-containing compounds such as (2-(4-ethenylphenyl)ethenyl)-phosphonic acid and esters thereof are disclosed. A method of preparation of the phosphonic acids comprising contacting a diethylenically unsaturated aromatic compound and phosphorus pentachloride in the presence of sulfur dioxide is also disclosed.The compounds of this invention are useful as monomers for the preparation of polymers having enhanced anti-corrosive properties.

Abstract: Novel phosphonic acid-containing compounds such as (2-(4-ethenylphenyl)ethenyl)-phosphonic acid and esters thereof are disclosed. A method of preparation of the phosphonic acids comprising contacting a diethylenically unsaturated aromatic compound and phosphorus pentachloride in the presence of sulfur dioxide is also disclosed.The compounds of this invention are useful as monomers for the preparation of polymers having enhanced anti-corrosive properties.

Abstract: A highly adherent photopolymerizable composition comprises a (hydroxy)phosphinylalkyl monomer of the formula ##STR1## wherein R is hydrogen, methyl or ethyl and R' and R" are selected independently from hydrogen and alkyl of 1-10 carbon atoms; at least one copolymerizable ethylenically unsaturated monomer and a photoinitiator.

Abstract: The invention is (hydroxy)-phosphinylalkyl acrylate, (hydroxy)-phosphinylalkyl methacrylate or an alkali metal, alkaline earth metal or ammonium salt thereof.In another aspect, the invention is a polymeric composition which comprises the reaction product of:(a) between about 0.5 and 100 percent by weight of a (hydroxy)-phosphinylalkyl acrylate, (hydroxy)-phosphinylalkyl methacrylate or an alkali metal, alkaline earth metal or ammonium salt thereof; and(b) between about 0 and 99.5 weight percent of a compound containing a polymerizable 1,2-ethylenically unsaturated moiety.

Abstract: The invention is (hydroxy)-phosphinylalkyl acrylate, (hydroxy)-phosphinylalkyl methacrylate or an alkali metal, alkaline earth metal or ammonium salt thereof.In another aspect, the invention is a polymeric composition which comprises the reaction product of:(a) between about 0.5 and 100 percent by weight of a (hydroxy)-phosphinylalkyl acrylate, (hydroxy)-phosphinylalkyl methacrylate or an alkali metal, alkaline earth metal or ammonium salt thereof; and(b) between about 0 and 99.5 weight percent of a compound containing a polymerizable 1,2-ethylenically unsaturated moiety.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of an aromatic bis(cyclic phosphate) such as 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxy-2,1-ethanediyloxy)]bis(5,5- dimethyl-2,2'-dioxo-1,3,2-dioxaphosphorinane) exhibits improved thermal stability.

Abstract: Phosphorus containing polymers are prepared by copolymerizing a cyclic phosphite and an epoxide in the presence of an acid catalyst. The resulting polymer can be incorporated within a thermoplastic or thermosettable resin to increase the flame resistivity thereof.

Abstract: Effective radiation curable flame retardant compositions include compounds of the formula: ##STR1## wherein A is hydrogen or methyl; A' is hydrogen, methyl, phenyl or halogen; n is 1 or 1.5 and when n is 1, B is hydrogen or methyl and when n is 1.5, B is hydrogen; Y is oxygen or sulfur; R and R' are hydrogen, methyl, chloromethyl or bromomethyl.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of an aromatic bis(cyclic phosphite) such as 2,2'---(1-methylethylidene)bis(4,1-phenyleneoxy-2,1-ethanediyloxy)]bis(5,5 -dimethyl-1,3,2-dioxaphosphorinane) exhibits improved processability and thermal stability.

Abstract: Effective reactive flame retardants are novel compounds of the formula: ##STR1## wherein A is hydrogen or methyl; A' is hydrogen, methyl, phenyl or halogen; n is 1 or 1.5 and when n is 1, B is hydrogen or methyl and when n is 1.5, B is hydrogen; Y is oxygen or sulfur; R and R' are hydrogen, methyl, chloromethyl or bromomethyl.