Accession Number : AD0466131

Title :   DEVELOPMENT OF FIRE RETARDANT ELASTOMERS.

Descriptive Note : Final rept., Jun 59-31 Mar 60.

Corporate Author : BORDEN CO PHILADELPHIA PA

Report Date : 30 MAY 1960

Pagination or Media Count : 17

Abstract : The major effort of research under this contract was devoted to the emulsion copolymerization of elastomeric monomers (isoprene, chloroprene, acrylates), with flame-retardant olefinic compounds such as: bis(2-chloroethyl) vinylphosphonate (CVP), diallyl allylphosphonate (DAAP), diallyl chloromethylphosphonate (DACP), diallyl phenylphosphate hexachlorobutadiene (HCBD), and phenyl allyl allylphosphonate (PAAP). Other monomers such as acrylonitrile and vinylidene chloride were also incorporated into several compositions. Copolymers of elastomeric monomers with diallyl chloromethylphosphonate or with vinylidene chloride were self-extinguishing (Q.M. number of 4). The incorporation of a low molecular weight polymer of CVP into an Acrylon Rubber by milling also produced a selfextinguishing elastomer. The other flame-retardants listed, did not produce permanently nonflammable copolymers. In several cases, no true copolymers were produced. For example, attempts to copolymerize HCBD with a number of monomers led to polymeric products from which the HCBD could be extracted. The self-extinguishing characteristics of Neoprene were not improved by milling low molecular weight CVP into it. (Author)

Descriptors :   (*ELASTOMERS, HEAT RESISTANT MATERIALS), COPOLYMERIZATION, ISOPRENE, ORGANIC PHOSPHORUS COMPOUNDS, CHLORINE COMPOUNDS, AROMATIC COMPOUNDS, ACRYLONITRILE POLYMERS, PHOSPHATES, PHOSPHONIC ACIDS, ESTERS, VINYL PLASTICS, FLAMES, INHIBITION, ADDITIVES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE