Patent GB-1082677-A (GB)
Title: Improved flameproofing composition and process
IPC: D06M13/487
Filed: 1964-09-01
Abstract: Aqueous compositions for rendering cellulosic materials flame retardant comprise a chlorine-containing resinous material and a phosphorus compound containing at least two 1-aziridinyl groups, optionally together with antimony trioxide.  The compositions may also comprise tetrakis(a -hydroxy-organo) phosphonium halides, boron trifluoride complexes, e.g. with dimethyl formamide, and zinc fluoborate; and wetting agents and may be applied to the cellulosic material, e.g. cotton, rayon, ramie, jute, paper, cardboard or wood, from aqueous media.  Specified resinous materials are polymers and copolymers of vinyl chloride and vinylidene chloride, chlorinated rubber, chlorinated waxes and chlorinated polyphenyls and mixtures thereof.  The aziridinyl phosphorus compounds may be aziridinyl phosphine oxides, sulphides or nitrides, e.g. triaziridnylphosphine oxide or sulphide; diaziridinyl phosphine nitride trimer; vinyl, butyl or benzyl diaziridinyl phosphine oxide; and ethyl diaziridinyl phosphine sulphide.  Many suitable phosphonium halides are listed. Examples describe compositions comprising water, an oxyethylated alkylphenol and (1 and 2) polyvinyl chloride, tris(1-aziridinyl)phosphine oxide, antimony trioxide and zinc fluoborate; (3) polyvinyl chloride, tris(1-aziridinyl)phosphine oxide, antimony oxide, triethanol-amine and tetrakis-(hydroxymethyl) phosphonium chloride; (4) polyvinylidene chloride, tris(1-aziridinyl) phosphine sulphide, antimony oxide and zinc fluoborate; and (5) polyvinyl chloride, tris(1-aziridinyl)phosphin oxide and zinc fluoborate.ALSO:Cellulosic textile materials may be rendered flame retardant by impregnating with an aqueous composition comprising a chlorine-containing resinous material and a phosphorus compound containing at least two 1-aziridinyl groups, optionally together with antimony trioxide, and drying and curing the impregnated material. Many chlorine containing materials are specified, including polymers and copolymers of vinyl and vinylidene chlorides, chlorinated rubber, chlorinated waxes, chlorinated polyphenyls and mixtures thereof.  The aziridinyl phosphorous compounds may be aziridinyl phosphine oxides, sulphides or nitrides, e.g. triaziridinyl phosphine oxide or sulphide; diaziridinyl phosphine nitride trimer; vinyl, butyl or benzyl diaziridinyl phosphine oxide; or ethyl diaziridinyl phosphine sulphide.  The compositions may also contain tetrakis (a -hydroxy organo) phosphonium halides, boron trifluoride complexes, e.g. with dimethyl formamide or zinc fluoborate, and wetting agents. Materials treated may be of cotton, rayon, ramie, jute and paper. In examples cotton cloths are impregnated with aqueous compositions comprising ethoxylated alkyl phenol and (1 and 2) polyvinyl chloride latex, tris (1-aziridinyl) phosphine oxide, antimony trioxide and zinc fluoborate; (3) polyvinyl chloride latex, tris(1-axiridinyl)phosphine oxide, antimony trioxide, triethanolamine and tetrakis(hydroxy-methyl)phosphonium chloride; (4) polyvinylidene chloride latex, tris(1-aziridinyl)phosphine sulphide, antimony oxide and zinc fluoborate; and (5) polyvinyl chloride latex, tris(1-aziridinyl)phosphine oxide and zinc fluoborate.