Abstract: Homopolymers of the diacrylates, dimethacrylates, di(2-haloacrylates) and di(2-cyanoacrylates) of 1-dialkanolaminophospholene-1-oxides and the copolymers of the above esters with lower-alkyl acrylates, meth-acrylates, 2-chloroacrylates and 2-cyanoacrylates are described. These polymers are useful as catalysts in the conversion of organic isocyanates to the corresponding carbodiimides.

Abstract: Modified polystyrenes are described which are catalysts for the conversion of organic isocyanates to the corresponding carbodiimides. The modified polystyrenes are characterized by the presence of recurring units of the formula: ##STR1## WHEREIN THE BROKEN LINES IN THE PHOSPHOLENE NUCLEUS INDICATE A DOUBLE BOND LOCATED BETWEEN THE CARBON ATOM AT POSITION 3 AND ONE OF THE CARBON ATOMS AT POSITIONS 2 AND 4, THE H atom is attached to whichever carbon atom at positions 2 and 4 is not part of said double bond, R is halogen, alkoxy (C.sub.1-6), phenoxy, hydrocarbyl (C.sub.1-18), halohydrocarbyl (C.sub.1-18), m = 0-3; n = 0, 1; R.sub.1 is hydrogen or methyl; and R.sub.2 is hydrocarbyl free from substituents reactive with isocyanate.

Abstract: Homopolymers, copolymers and terpolymers of a styrene based monomer are prepared by:(1) polymerizing at least one oxidized styrylphosphine monomer selected from the group of:(C.sub.6 H.sub.5).sub.2 P(O)N.dbd.P(C.sub.6 H.sub.5).sub.2 C.sub.6 H.sub.4 CH.dbd.CH.sub.2,(c.sub.6 h.sub.5 o).sub.2 p(o)n.dbd.p(c.sub.6 h.sub.5).sub.2 c.sub.6 h.sub.4 ch.dbd.ch.sub.2,(c.sub.6 h.sub.5).sub.2 c.sub.3 n.sub.3 n.dbd.p(c.sub.6 h.sub.5).sub.2 c.sub.6 h.sub.4 ch.dbd.ch.sub.2 and(C.sub.6 H.sub.5) C.sub.3 N.sub.3 [N.dbd.P(C.sub.6 H.sub.5).sub.2 C.sub.6 H.sub.4 CH.dbd.CH.sub.2 ].sub.2 ; or(2) polymerizing p-diphenylphosphinestyrene and then oxidizing said polymerized p-diphenylphosphinestyrene monomer with an organoazide selected from the group of (C.sub.6 H.sub.5).sub.2 P(O)N.sub.3,(C.sub.6 H.sub.5 O).sub.2 P(O)N.sub.3,(C.sub.6 H.sub.5).sub.2 C.sub.3 N.sub.3 (N.sub.3) and C.sub.6 H.sub.5 C.sub.3 N.sub.3 (N.sub.3).sub.2.

Abstract: There is described the preparation of a flameproofing compound useful in production of cellulosic fibres having a high resistance to combustion, said preparation comprising treating a phosphonitrile halide with a saturated alcohol, treating the halogen containing alkoxy derivative thus obtained with an unsaturated alcohol, and copolymerizing the alkyl substituted alkoxy derivative product thus obtained with an unsaturated acid, forming an alkaline aqueous solution-suspension adapted to be easily and intimately mixed with alkaline aqueous solutions of cellulose xantogenate to obtain a viscous mass of cospinnable components which are co-coagulable in a cellulose xantogenate coagulating bath. Obtaining essentially homogeneous yarns including the flameproofing compound in their cross-sections.

Abstract: Modified polystyrenes are described which are catalysts for the conversion of organic isocyanates to the corresponding carbodiimides. The modified polystyrenes are characterized by the presence of recurring units of the formula: ##STR1## WHEREIN THE BROKEN LINES IN THE PHOSPHOLENE NUCLEUS INDICATE A DOUBLE BOND LOCATED BETWEEN THE CARBON ATOM AT POSITION 3 AND ONE OF THE CARBON ATOMS AT POSITIONS 2 AND 4, THE H atom is attached to whichever carbon atom at positions 2 and 4 is not part of said double bond, R is halogen, alkoxy (CH.sub.1-6), phenoxy, hydrocarbyl (C.sub.1-18), halohydrocarbyl (C.sub.1-18), m = 0-3; n = 0, 1; R.sub.1 is hydrogen or methyl; and R.sub.2 is hydrocarbyl free from substituents reactive with iosocyanate.

Abstract: Homopolymers of the diacrylates, dimethacrylates, di(2-haloacrylates) and di(2-cyanoacrylates) of 1-dialkanolaminophospholene-1-oxides and the copolymers of the above esters with lower-alkyl acrylates, methacrylates, 2-chloroacrylates and 2-cyanoacrylates are described. These polymers are useful as catalysts in the conversion of organic isocyanates to the corresponding carbodiimides.

Abstract: Novel compounds of the formula ##STR1## wherein each X is halogen, E is a lower alkylene group containing from about 2 to about 4 carbon atoms, D is chalcogen and each Z is independently selected from the group consisting of hydrogen and alkyl groups containing from 1 to about 4 carbon atoms. The above compounds are effective reactive flame retardants in acrylic polymeric compositions.

Abstract: A thermally stable flame-resistant phosphonate polymer of the structure ##STR1## WHEREIN R.sup.1 is methyl or ethyl, R.sup.2 is hydrogen or methyl and n is 3 to 100, is formed by the reaction of acrylic or methacrylic acid with an alkyl bicyclic phosphite of the structure ##STR2## wherein R.sup.1 is as above. The phosphonate polymer is useful in forming flame-resistant acrylic compositions such as molding powders and sheets from mixtures comprising the polymer and methyl methacrylate.This is a division, of application Ser. No. 139,948 filed May 3, 1971, now U.S. Pat. No. 3,755,270.

Abstract: Fire retardant copolymers of: (1) a bis (hydrocarbyl) vinylphosphonate, (2) a monomer which contains one ethylenically unsaturated bond, and (3) acrylic or methacrylic acid are disclosed. These copolymers are useful in a variety of applications, including as coatings, and as additives for enhancing the fire retardancy of thermoplastics.

Abstract: Hydroformylation reactions are carried out in the presence of a catalyst comprising a solid polymer of a trivalent phosphorus-containing compound having associated therewith a metal of the group cobalt, rhodium, ruthenium, platinum and palladium. The polymer, which can be formed in part of a polyvinylaromatic compound, can be used to remove catalyst residues from hydroformylation reaction effluent streams. p-styryldiethylphosphine and polymers thereof are disclosed.