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    LEATHER DRESSING
    2.
    发明专利
    LEATHER DRESSING 未知

    公开(公告)号：CA1066856A

    公开(公告)日：1979-11-27

    申请号：CA205371

    申请日：1974-07-19

    Applicant: BASF AG

    Inventor： FALKENSTEIN GEORG ,  WUERTELE LOTHAR ,  ECKERT GUENTER ,  STUTZ HERBERT

    IPC: C09D175/04 ,  C14C11/00 ,  D01C3/00

    Abstract: The present invention relates to an aqueous dispersion for the final dressing of leather, which consists essentially of a mixture of a) an aqueous emulsion of a nitrocellulose solution in organic solvents which are immiscible with water, liquid at the use temperature and sufficiently volatile at 100 to 150.degree.C containing 3 to 20% by weight based on the solution, of nitrocellulose and 10 to 100% by weight, based on nitrocellulose, of a plasticizer and further containing a non-ionic emulsifier, and b) an aqueous dispersion of a polyurethaneionomer with 0.02 to 0.2 percent of salt-like groups and wherein the ratio of a) to b), based on the weights of the aqueous emulsions or dispersions, is from 1:0.1 to 1:10.

    MANUFACTURE OF FLEXIBLE FOAMS
    6.
    发明专利
    MANUFACTURE OF FLEXIBLE FOAMS 未知

    公开(公告)号：CA1129599A

    公开(公告)日：1982-08-10

    申请号：CA325401

    申请日：1979-04-10

    Applicant: BASF AG

    Inventor： JARRE WOLFGANG ,  STUTZ HERBERT ,  SCHOEN ERNST

    IPC: C08G18/00 ,  C08G18/72 ,  C08G18/76 ,  C08G18/80 ,  C08G18/14

    Abstract: MANUFACTURE OF FLEXIBLE FOAMS of the Invention This invention concerns a process for the manufacture of flexible polyurethane foams from urethane-modified aromatic polyisocyanates having an NCO content of 15 to 30 percent by weight and a viscosity of 100 to 2000 centipoises at 20.degree.C, which are obtained by reaction of a mixture of diphenylmethane diisocyanates and polyphenylene polymethylene polyisocyanates containing 55 to 85 percent by weight of diphenylmethane diisocyanate based on the total weight of the polyisocyanate mixture and a hydroxyl compound with 2 to 4 Zerewitinoff active hydrogen atoms and a molecular weight of 60 to 1500, in an equivalency ratio of NCO groups to active hydrogen atoms of the hydroxyl compound of 2:1 to 60:1, polyols, catalysts, blowing agents, and optionally, chain extenders, auxiliaries, and additives.

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