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    Tanning hides - using aq baths contg formaldehyde and diamines
    16.
    发明专利
    Tanning hides - using aq baths contg formaldehyde and diamines 未知

    公开(公告)号：DE2158197A1

    公开(公告)日：1973-05-30

    申请号：DE2158197

    申请日：1971-11-24

    Applicant: BASF AG

    Inventor： GULBINS KLAUS DR ,  KNAFLIC FRANZ DIPL ING

    IPC: C14C3/08

    Abstract: Depilated hides are tanned by using aq. baths contg. 2-10 wt.% wt. (based on hide) of HCHO or HCHO-precursor and adding 2-10 wt.% (based on hide) of a diamine of formula H2N-A-NH2 (where A is 4-10C alkylene, 5-8C cycloalkylene or a di-(5-8 C)-cycloalkyl-methylene gp. and the amino gps. are linked in the omega,omega'-posns.). Pref. HCHO and diamine are added to tanning liquors in separate baths. Soft, supple leathers with raised shrinkage temps. are obtd.

    18.
    发明专利
    未知

    公开(公告)号：DE1669078A1

    公开(公告)日：1971-07-22

    申请号：DE1669078

    申请日：1966-12-03

    Applicant: BASF AG

    Inventor： WILHELM HANS DR ,  GULBINS KLAUS DR ,  HARTMANN HEINRICH DR

    IPC: C08F2/08 ,  C08F265/06 ,  C08G18/62 ,  C08G18/63 ,  C09D151/00 ,  D06M15/564

    Abstract: 1,203,427. Coatings. BADISCHE ANILIN- & SODA-FABRIK A.G. 1 Dec., 1967 [3 Dec., 1966], No. 54719/67. Heading B2E. [Also in Division C3] Substrates, such as textiles, paper, leather, wood, metals, glass, ceramics and concrete, are coated with compositions comprising (I) a crosslinkable copolymer dispersion prepared by copolymerising (a) an olefinically unsaturated compound containing a hydroxyl group and (b) at least one olefinically unsaturated comonomer in (c) an organic liquid in which the copolymer of (a) and (b) is substantially insoluble and which is inert to organic isocyanate groups, and in the presence of (d) a copolymer of monomers of group (a) and group (b), which is soluble in (c); and (II) a diisocyanate or polyisocyanate. Suitable monomers (a) include unsaturated alcohols, N- methylol amides or mono- or di-ethanolamides of acrylic or methacrylic acid, and hydroxyalkyl esters of acrylic, methacrylic or maleic acid. Specified as monomer (b) are butadiene, styrene, vinyl chloride, vinylidene chloride, acrylonitrile, methacrylonitrile, C 1 -C 12 alkyl esters of acrylic, methacrylic or maleic acid, vinyl esters of C 2 -C 24 alkanoic acids, acrylic, methacrylic or maleic acid, maleic anhydride, acrylamide, methacrylamide, N-vinylimidazole and N-vinyl-imidazolium methyl sulphate. Suitable as the organic liquid (c) are aliphatic, cycloaliphatic or aromatic hydrocarbons, terpenes, aliphatic ketones, ethers and esters, chlorinated hydrocarbons, cyclic ethers, dimethyl sulphoxide, dimethylformamide and acetonitrile. Component (II) may be an aliphatic, cycloaliphatic, araliphatic or aromatic di- or tri-isocyanate. Additives such as levelling agents, anti-corrosives, matting agents, crosslinking catalysts, pigments and silicone resins may be included in the copolymer dispersions. The coatings produced can be crosslinked by heating to 60-160‹C and/or by means of a catalyst. An Example illustrates the application of a copolymer dispersion to nylon 6 cloth in a coating thickness of 15g/sq.m.

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