DISPERSIONS OF POLYURETHANES, THEIR PREPARATION AND USE

    公开(公告)号:CA2731927A1

    公开(公告)日:2010-02-18

    申请号:CA2731927

    申请日:2009-07-30

    Applicant: BASF SE

    Abstract: The present invention relates to the use of aqueous dispersions containing a pigment (B) which is at least partially enveloped by polyurethane (A) and also at least one polymerization inhibitor (C), wherein polyurethane (A) can be obtained by reacting (a) from 15 to 70% by weight of diisocyanate or polyisocyanate which has an average of from 1 to 10 allophanate groups and an average of from 1 to 10 C-C double bonds per molecule and optionally (b) from 0 to 60% by weight of a further diisocyanate or polyisocyanate with (c) from 5 to 50% by weight of compounds having at least two groups which are capable of reacting with isocyanate, where amounts in % by weight are based on the total polyurethane (A), in printing inks.

    Two component polyurethane coating mass, useful for coating e.g. wood, wood veneer, paper, paperboard, airplanes and parquet, comprises hydroxy-group containing component and isocyanate-group containing component

    公开(公告)号:DE102008054974A1

    公开(公告)日:2009-07-16

    申请号:DE102008054974

    申请日:2008-12-19

    Applicant: BASF SE

    Abstract: Two component polyurethane coating mass, comprises: at least a hydroxy-group containing component (A) and at least an isocyanate-group containing component (B), where: the hydroxy-group is a polyesterol and the isocyanate-group is an isocyanate-group containing polyurethane, respectively made from at least a compound (A1) exhibiting exactly 2 phenol hydroxy-group, and at least a compound (A2) exhibiting 2 carboxyl-groups or their derivatives. Independent claims are included for: (1) preparing the coating mass, comprising mixing (A) and (B) in a molar ratio of isocyanate- to hydroxy-group of 0.1:1-10:1, and optionally further mixing with lacquer type components, and applying on a substrate; and (2) a process for self-healing of the coating obtained from the coating mass, comprising heating the coating for at least 10 minutes at at least 10[deg] C above the glass transition temperature of the coating and/or the dissociation temperature of the adduct of the isocyanate (B2) and a substituted diphenyl compound of formula (II) (B1), in relation to the lower temperature. R 4>a single bond exhibiting 1-20C, double bonded organic residue or O; and R 5>, R 6>H, 1-20C-alkyl, 6-12C-aryl or 5-12C-cycloalkyl (all optionally substituted by aryl, alkyl, aryloxy, alkyloxy, heteroatom and/or heterocycles). [Image].

    Masas de recubrimiento endurecibles por radiación de secado rápido

    公开(公告)号:ES2589132T3

    公开(公告)日:2016-11-10

    申请号:ES13737216

    申请日:2013-07-12

    Applicant: BASF SE

    Abstract: Masas de recubrimiento endurecibles por radiación, que contienen (A) al menos un (met)acrilato multifuncional con un peso molecular de no más de 1000 g/mol y una funcionalidad de al menos cuatro, (B) al menos un (met)acrilato de alquilo monofuncional que como homopolímero presenta una temperatura de transición vítrea de no más de 0 ºC, (C) al menos un (met)acrilato de uretano que presenta al menos un grupo isocianato libre y al menos un grupo (met)acrilato, (D) al menos un (met)acrilato multifuncional con un peso molecular de más de 1000 g/mol y una funcionalidad de al menos cinco, (E) opcionalmente al menos un disolvente, seleccionado del grupo constituido por hidrocarburos, cetonas, ésteres, ésteres alquílicos de ácidos alcanoicos, éteres y sus mezclas, (F) opcionalmente al menos una amina y/o alcohol, (G) opcionalmente al menos un fotoiniciador y (H) opcionalmente al menos un adyuvante de barniz,

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