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    • 66. 发明授权
    • Method of making flame resistant textiles by substitution of c,h,o by mo or w
    • C,H,O通过MO或W取代耐火纺织品的方法
    • US3728073A
    • 1973-04-17
    • US3728073D
    • 1971-05-20
    • CLARK D CO INC
    • PLESKUN W
    • D06M11/53D06C7/04D06M1/22D06M3/28
    • D06M11/53Y10S264/19Y10S428/92Y10S428/921Y10T428/8305
    • AN INITIAL BASE MATERIAL CONTAINING CARBON AND HYDROGEN ATOMS, PREFERABLY A TEXTILE IN FIBER FORM IS HEATED WITH A REACTING COMPONENT CONTAINING A METAL ATOM FOR THE PURPOSE OF REPLACING PART AT LEAST OF THE CARBON AND HYDROGEN ATOMS TO INCREASE THE HEAT RESISTANCE AND FRAME PROOF PROPETIES OF THE BASE MATERIAL. THE BASE MATERIAL IS PREFERABLY OF THE BYLON TYPE COMPRISING A LONG CHAIN POLYMERIC AMIDE, HEREINAFTER FREQUENTLY REFERRED TO SIMPLY AS A POLYAMIDE, HAVING RECURRING AMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN CHAIN. SUCH BASE MATERIAL IS PREFERABLY HEATED WITH A REACTIVE COMPONENT OR SUBSTANCE IN A SUITABLE VEHICLE OR SOVENT. SUCH REACTIVE COMPONENT IS PREFERABLY ONE CONTAINING A MOLYBDENUM ATOM THROUGH SUBSTANCES CONTAINING OTHER METAL ATOMS HAVE BEEN SUCCESSFULLY EMPLOYED. THE BASE MATERIAL IS PREFERABLY THROUGHLY SATURATED WITH THE REACTIVE COMPONENT, PREFERABLY MOLYBDENUM DISULPHIDE, IN A SUITABLE SOLVENT OR VEHICLE WHEREBY A COATING ADHERES TO THE BASE MATERIAL. THE SATURATED BASE MATERIAL IS THEN PREFERABLY DRIED AND THEREAFTER PASSED INTO A REACTION CHAMBER PREFERABLY IN THE PRESENCE OF A CATALYST AND SUBSTITUTED TO A HIGH TEMPERATURE WHICH MAY RANGE FROM ABOUT 600* F. TO ABOUT 1200*F., PREFERABLY BETWEEN ABOUT 700* F. AND ABOUT 1100*F. AND WHERE A GASEOUS CATALYST IS EMPLOYED PREFERABLY BETWEEN ABOUT 700*F. AND ABOUT 900*F. A TEMPERATURE OF ABOUT 80/*F. HAS BEEN FOUND SUITABLE FOR MOST PURPOSES. THE CATALYST MAY BE SUPPLIED IN THE SATURATING BATH OR WHEN IN GASEOUS FORM MAY FORM PART OF THE ATMOSPHERE WITHIN THE REACTION CHAMBER. WHERE A GASEOUS CATALYSTIS EMPLOYED IT IS PREFERABLY A HALOGEN OR HALIDE SUCH AS FLUORINE, CHLORINE OR HYDROFLUORIDE. AFTER THE REACTION TAKES PLACE THE TREATED BASE MATERIAL MAY BE WASTED, RINSED AND AGAIN DRIED. SUITABLE ADDITIVES MAY BE EMPLOYED TO IMPROVE THE PROCESS SUCH AS ANTI-OXIDANTS, SURFACTANTS AND WETTING AGENTS OF VARIOUS TYPES.