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    Polyurethane dispersions esp. for coating textiles and leather - based on di:isocyanato:di:cyclo:hexyl:methane
    62.
    发明专利
    Polyurethane dispersions esp. for coating textiles and leather - based on di:isocyanato:di:cyclo:hexyl:methane 未知

    公开(公告)号：DE4231034A1

    公开(公告)日：1994-03-24

    申请号：DE4231034

    申请日：1992-09-17

    Applicant: BASF AG

    Inventor： WEYLAND PETER DR ,  HAEBERLE KARL DR

    IPC: C08G18/08 ,  C08G18/75 ,  C14C11/00 ,  D06M15/564 ,  D06M15/568 ,  D06M15/572 ,  D06N3/14 ,  C08G18/66 ,  C09D175/04

    Abstract: Polyurethanes (I) are derived from polyisocyanates (II), NCO-reactive cpds. with OH gp(s). (III) and opt. cpds. with prim. or sec. amino gp(s). (IV). At least 40 mole% of (II) consists of di-isocyanato-dicyclohexyl-methane (DCHMDI), at least 30 wt% of which consists of the trans/trans isomer. The required DCHMDI mixt. is readily obtd. by sepn. of the solid trans/trans isomer from the cis/cis and cis/trans isomers at below deg. C followed by back-mixing as required. IPDI is preferred as a further isocyanate component. Pref. (III) are polyether-polyols or polyester-polyester-polyols, and (IV) are mixts. of IPDA and diethylenetriamine. USE/ADVANTAGE - Used as coating materials, esp. for textiles and leather (claimed). Polyurethanes (PU) with the above compsn. enable the prodn. of soft coatings with a low degree of stickiness, on leather, textiles etc. (contrast prior-art PU based on normal DCHMDI mixts., e.g. Desmodur W (RTM) with 20-25 wt% trans/trans isomer).

    64.
    发明专利
    未知

    公开(公告)号：DE4003422A1

    公开(公告)日：1991-08-08

    申请号：DE4003422

    申请日：1990-02-06

    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.

    65.
    发明专利
    未知

    公开(公告)号：DE3911827A1

    公开(公告)日：1990-10-25

    申请号：DE3911827

    申请日：1989-04-11

    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.

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