Stauffer Chemical Company

Jung Il Jin

Paul Kraft

Arthur J Yu

Jesse C Hwa

A fire retardant additive for a polyurethane foam comprising a copolymer of: (1) an allyl group containing compound having the formula (CH.sub.2 .dbd.CHCH.sub.2 O).sub.2 P(O)A, where A is either OR or R, R being a vinyl group, an allyl group, a C.sub.1 -C.sub.10 alkyl group or an aryl group; (2) at least one bis(hydrocarbyl)vinylphosphonate having the structure: ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl, C.sub.1 -C.sub.18 alkyl, and ##STR2## wherein R and R' are hydrocarbyl and substituted hydrocarbyl groups which can be the same, different or conjoint; and (3) at least one optional third comonomer selected from the group consisting of the vinyl and vinylidene halides, the alpha olefins, vinyl esters of carboxylic acids, C.sub.1 -C.sub.20 alkyl esters of acrylic and methacrylic acid, ethylenically unsaturated dicarboxylic acids, the corresponding anhydrides thereof and the C.sub.1 -C.sub.20 mono and dialkyl esters thereof, amides of ethylenically unsaturated carboxylic acids and the N-methylol and diacetone derivatives thereof, vinyl aryl compounds, C.sub.1 -C.sub.20 alkyl vinyl ethers, aliphatic dienes and glycidyl esters of acrylic and methacrylic acid. When these copolymers are added to a polyurethane foam formulation at about 20-30 parts per hundred based upon the weight of polyol, a flame retardant polyurethane foam having good physical properties results therefrom.

Fire retardant copolymer of triallyl phosphate and a bis (hydrocarbyl)

There are disclosed fire retardant polyblends comprising thermoplastic polymers intimately admixed with a crosslinked copolymer of a vinyl halide, preferably a crosslinked vinyl chloride copolymer. These fire retardant polyblends may be utilized in a variety of coating, impregnating and especially molding applications wherein it is desired to provide fire retardancy to the resulting end product.

Crosslinked vinyl halide polymers as flame retardant additives for

The use of an anthraquinone sulfonate as an additive in an aqueous suspension or emulsion medium containing a vinyl chloride monomer substantially reduces the formation of polymer scale which is normally deposited on the inner walls of the polymerization vessel after a suspension or emulsion polymerization has been conducted.

Method for the preparation of polyvinyl chloride by suspension or

Polymer latices comprising at least one halogen-containing .alpha.,.beta.-ethylenically unsaturated monomer, at least one bis(hydrocarbyl)vinyl phosphonate and at least one comonomer such as an alkyl acrylate or a N-methylol acrylamide, blended with antimony oxide are excellent flame retardant additives for flammable materials. The compositions of the present invention show a marked reduction in the after-glow phenomenon associated with compositions containing antimony oxide.

Flame-retardant binder comprising vinylidene

The invention is a method of stabilizing a reaction mixture of a polythiol and sulfur. The method comprises contacting said reaction mixture with an effective amount of a stabilizing agent selected from the group consisting of epoxides, acid anhydrides and mixtures thereof.

Method of stabilizing polythiol reaction products

There are disclosed crosslinked copolymers of: (1) a bis(hydrocarbyl) vinylphosphonate, particularly bis(beta-chloroethyl) vinylphosphonate; (2) a plyfunctional ethylenicaly unsaturated monomer; and (3) as an optional component one or more monofunctional vinyl comonomers. These crosslinked copolymers may be used, per se, as flame retardant materials or they may be blended with various thermoplastic polymers in order to reduce their flammability.

Fire retardant crosslinked copolymers

The invention is a method for plasticizing sulfur which comprises intimately intermixing a stabilized polymeric polysulfide, having a sulfur rank of from about 3.5 to about 5, with sulfur to form a plasticized sulfur composition.

Method for plasticizing sulfur

Polymer compositions formed by polymerizing a vinyl compound, e.g., a vinyl halide, a bis(hydrocarbyl)vinylphosphonate e.g., bis(beta-chloroethyl)vinylphosphonate, and an allyl halide, e.g., allyl chloride, find use as flame retardant plasticizers when the amount of allyl halide ranges between about 20% and 50% by weight and can be used as flame retardant solid additives when the amount of allyl halide ranges between about 5 and 20% by weight of the composition.

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Irvington, NY, United States of America

Jung Il Jin