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    Bituminous compositions
    36.
    发明专利
    Bituminous compositions 未知

    公开(公告)号：GB1076648A

    公开(公告)日：1967-07-19

    申请号：GB4169364

    申请日：1964-10-13

    Applicant: BASF AG

    Inventor： MUELLER HERBERT ,  SEIBT HUBERTUS ,  REINHARD HANS ,  PETRI ROLF

    IPC: C08L9/00 ,  C08L95/00

    Abstract: A bituminous composition comprises a drying oily polymer of a 1,3-dione having a molecular weight of 500-20,000. The oily polymer may also be mixed up to 50% by weight of non-polymerizable polymers with or without polymerizable monomers, or of polyenes serving as cross-linking agents; and with drying natural fatty oils or with drying oils having conjugated double bonds. Other additives include free-radical forming compounds, e.g. peroxides and azo compounds, heavy metal compounds, and conventional driers, i.e. metal salts, e.g. naphthenates, caprylates and oleates of Co, Fe, Pb and Mn. The drying oily polymers may be used undiluted, or in solution or emulsified, e.g. with water, using conventional emulsifiers, and/or protective colloids. The bitumen and oily polymer may be mixed by stirring molten bitumen while pouring in or spraying the polymer, or by use of extruders, rollers and kneaders; or bituminous emulsions may be mixed with oily polymer emulsion. The composition may comprise 0.04 to 100 parts by weight of bitumen for each part of oily polymer. The oily polymer may be in chemically modified form.ALSO:A bituminous composition is made by mixing a bituminous emulsion with an aqueous emulson of an oily polymer. The composition may comprise 0.04 to 100 parts by weight bitumen, tar or asphalt per part of polymer. The polymer is a curable oily polymer of a 1, 3-diene having M.W. 500-20,000; it may have been chemically modified. Mixed with the polymer may be other polymers or monomers; polyenes; drying natural fatty oils; drying oils with conjugated double bonds; free-radical forming compounds, e.g. peroxides and azo compounds; heavy metal compounds; and conventional driers, i.e. metal salts, e.g. naphthenates, caprylates, and oleates of Co, Fe, Pb and Mn. Specified emulsifiers for the polymer are sulphonates and ethylene oxide adducts; specified protective colloids are casein, alginates and cellulose derivatives, polyvinyl alcohol, polyvinyl lactams and copolymers of vinyl lactams and amides of unsaturated carboxylic acids.

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