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    23.
    发明专利
    未知

    公开(公告)号：ES2058652T3

    公开(公告)日：1994-11-01

    申请号：ES90106517

    申请日：1990-04-05

    Applicant: BASF AG

    Inventor： HAEBERLE KARL DR ,  WEYLAND PETER DR ,  ECKERT GUENTER DR ,  RENZ HANS DR

    IPC: C08F299/06 ,  C08F290/00 ,  C08G18/00 ,  C08G18/08 ,  C08G18/12 ,  C08G18/28 ,  C08G18/32 ,  C08G18/65 ,  C08G18/67 ,  C08J3/28 ,  C09D175/14 ,  C14C11/00

    Abstract: Aqueous dispersions of polyurethanes which are crosslinkable by the action of high energy radiation contain (a) a polyisocyanate, (b) a polyol having a molecular weight of from 400 to 6,000 g/mol, (c) if required, a polyol having a molecular weight of from 62 to 399 g/mol, (d) if required, a polyamine having two or more amino groups which are reactive to isocyanate, (e) if required, an aminoalcohol having one or more amino groups which are reactive to isocyanate, (f) a compound containing ionic groups or groups which can be converted into ionic groups and one or more hydroxyl or amino groups which are reactive to isocyanate (g) if required, a monofunctional polyetheral and (h) a compound having one or more ethylenically unsaturated groups and one or more hydroxyl groups. The compound having an ethylenically unsaturated group (h) is used in amounts corresponding to 0.02-0.08 gram equivalent, based on the polyisocyanate (a), of OH, and the polyurethane, dissolved in dimethylformamide, has a Fikentscher K value greater than 40 or is insoluble in dimethylformamide.

    Dressing leather with aq. compsn. of casein and/or dispersed polymer - condensate from formaldehyde and urea and/or melamine, and poly:isocyanate, increasing resistance to wet rubbing
    24.
    发明专利
    Dressing leather with aq. compsn. of casein and/or dispersed polymer - condensate from formaldehyde and urea and/or melamine, and poly:isocyanate, increasing resistance to wet rubbing 未知

    公开(公告)号：DE4021120A1

    公开(公告)日：1992-01-09

    申请号：DE4021120

    申请日：1990-07-03

    Applicant: BASF AG

    Inventor： FISCHER KARL ,  HOFER BRUNO ,  WEYLAND PETER DR

    IPC: C14C11/00

    Abstract: Leather is dressed by application of an aq. compsn. contg. (a) casein and/or a dispersed synthetic polymer, (b) a condensate from melamine/HCHO, urea/HCHO or melamine/urea/HCHO, and (c) a polyisocyanate, followed by drying. The leather is additionally treated at raised temp. after drying. The aq. compsn. contains 0.5-7 (1-4) wt.% of casein, 0.25-9 wt.% of the condensate (pref. 0.4-7 wt.% of a melamine/HCHO condensate), 0.15-7 (0.3-5) wt.% of polyisocyanate(s), and 70% of water, or 2-30 wt.% dispersed synthetic polymer, 0.25-9% of the condensate, 0.15-7% of polyisocyanate(s) and 50% of water. The polyisocyanate is a high-mol. conversion prod. from aliphatic and/or cycloaliphatic diisocyanate monomers, esp. the isocyanato-isocyanurate of hexamethylene 1,6-diisocyanate. At least one polyisocyanate may be added as a water-dispersible polyisocyanate compsn., where water dispersibility is ensured by the reaction prod. of a polyisocyanate with a polyether alcohol contg. ethylene oxide units. ADVANTAGE - Satisfactory resistant to wet rubbing can be obtd. without heat treatment.

    25.
    发明专利
    未知

    公开(公告)号：DE3643791A1

    公开(公告)日：1988-06-23

    申请号：DE3643791

    申请日：1986-12-20

    Applicant: BASF AG

    Inventor： HUMMERICH RAINER DR ,  KERBER MICHAEL DR ,  MAEMPEL LOTHAR DR ,  WEYLAND PETER DR

    IPC: C08G18/66 ,  C08G18/00 ,  C08G18/08 ,  C08G18/28 ,  C08G18/32 ,  C08G18/40 ,  C08G18/65 ,  C08L75/04 ,  C09J175/00 ,  C09J175/04 ,  C08G18/42 ,  C08G18/48 ,  C09J3/16

    Abstract: Aqueous dispersions of polyurethanes consisting of (a) organic polyisocyanates, (b) polyesterpolyols having a molecular weight of from 500 to 5,000, (c) organic hydroxy compounds having a molecular weight of from 62 to 400 and two terminal groups which are reactive to isocyanate groups, as chain extenders, and (d) compounds containing ionic groups or groups which can be converted to ionic groups and one or more isocyanate groups or a hydroxyl or amino group which is reactive to isocyanate groups, which contain from 0.05 to 2 meq of ionic groups incorporated into the polyurethane via (d) per g of polyurethane are particularly suitable for adhesives when the chain extenders (c) are incorporated in an amount of from 1.5 to 8 moles per mole of polyols, and a minor amount of (a) can be replaced with monoisocyanates, and a minor amount of (b) with polyetherpolyols.

    29.
    发明专利
    未知

    公开(公告)号：ES2142642T3

    公开(公告)日：2000-04-16

    申请号：ES97107492

    申请日：1997-05-07

    Applicant: BASF AG

    Inventor： LICHT ULRIKE DR ,  KOKEL NICOLAS DR ,  HABERLE KARL DR ,  ANGEL MAXIMILIAN DR ,  WEYLAND PETER DR ,  SCHERR GUNTER DR

    IPC: C08L75/14 ,  C08G18/08 ,  C08G18/67 ,  C08G73/04 ,  C09D175/14 ,  C09J175/14

    Abstract: Latent hardening aqueous polyurethane dispersions contain (1) a disperse phase (P.1) containing (1a) a polyurethane (PUR.1a) containing groups (G-1) imparting dispersibility in water and groups (G-2) with a carbon-carbon (C-C) double bond activated by a carbonyl group bound directly to this or (1b) a mixture of a polyurethane (PUR.1b) containing G-1 groups but not G-2 groups and a compound (I) containing G-2 groups, other than PUR.1a and PUR.1b; and (2) a compound (II) which contains an average of NOTLESS 2 hydrogen (H) atoms as amino function, has a water solubility > 1 g/l (25 degrees C) and has a number average molecular weight (Mn) of 200-1000000. Also claimed are wood, metal, textile, leather or plastics articles bonded, impregnated or coated with the dispersions.

    30.
    发明专利
    未知

    公开(公告)号：DE59109137D1

    公开(公告)日：1999-08-12

    申请号：DE59109137

    申请日：1991-01-25

    Applicant: BASF AG

    Inventor： WEYLAND PETER DR ,  HAEBERLE KARL DR ,  TREIBER REINHARD

    IPC: C08G18/00 ,  C08G18/08 ,  C08G18/48 ,  C08G18/65 ,  C08G18/66 ,  C14C11/00

    Abstract: Aqueous polyurethane preparations which contain from 10 to 60% by weight of at least one polyurethane A which is built up from a) at least one organic diisocyanate or a mixture of organic isocyanates which has an arithmetic mean NCO functionality of from 1.9 to 2.3 [monomers I], b) at least one dihydric polyether alcohol having a number average molecular weight of from 500 to 5000 or a mixture of polyether alcohols having a number average molecular weight of from 500 to 5000 and having an arithmetic mean functionality of alcoholic OH groups of from 1.6 to 2.3 [monomers II], c) at least one alcohol containing 1 to 3 alcoholic OH groups and at least one ionogenic group [monomers III], d) no, one or more dihydric alcohols having a number average molecular weight of from 62 to 499 or a mixture of alcohols having a number average molecular weight of from 62 to 499 and having an arithmetic mean functionality of alcoholic OH groups of from 1.9 to 2.3 [monomers IV], e) no, one or more monohydric polyether alcohols [monomers V], and f) no, one or more polyamines containing at least two N-H groups [monomers VI], with the proviso that the amounts of incorporated monomers I to VI are such that the OH/NCO equivalent ratio for the incorporated monomers II/monomers I is from 0.2 to 0.6, for the monomers III/monomers I is from 0.2 to 0.8, for the monomers IV/monomers I is from 0 to 0.2, and for the monomers V/monomers I is from 0 to 0.2, and the -N-H/NCO equivalent ratio of the incorporated monomers VI/monomers I is from 0 to 0.1, that the arithmetic mean functionality of all the incorporated monomers I to monomers V, determined via the sum of the NCO groups of the monomers I and the alcoholic OH groups of the monomers II to monomers V, is from 1.8 to 2.3, that the NCO/(OH + N-H) equivalent ratio for the incorporated monomers I, the OH groups of the incorporated monomers II to monomers V and the N-H groups of the incorporated monomers VI is from 0.9 to 1.0 and, in the case of the additional incorporation of monomers VI, the NCO/OH equivalent ratio for the incorporated monomers I and the sum of the incorporated monomers II to monomers V is at the same time greater than 1, that the monomers II have a degree of ethoxylation of less than 30% by weight, that the monomers V have a degree of ethoxylation of at least 40% by weight, and that from 0.05 to 2 mmol of the ionogenic groups of the incorporated monomers III per gram of polyurethane A in the aqueous preparation are in ionised form. These aqueous polyurethane preparations are suitable as primers (bottom coats) for finishes (dressings) on greased (oiled) and/or waterproofed leathers.

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