METHOD OF PREPARING SOFT AND BRITTLE RESINS AND THEIR APPLICATION

    公开(公告)号:DE2861898D1

    公开(公告)日:1982-07-29

    申请号:DE2861898

    申请日:1978-12-20

    Applicant: BASF AG

    Abstract: A process for the preparation of soft and hard resins, and their use in surface-coating binders. According to the invention, soft and hard resins are prepared from a urea and a CH-acidic aldehyde by reacting a urea of the general formula (I) (I) where X is oxygen or sulfur and R1 and R2 are hydrogen or identical or different alkyl, aryl or aralkyl, or may be an alkyleneurea radical, with at least 2 moles of a CH-acidic aldehyde of the general formula (II) (II) where R3 is hydrogen and R4 is alkyl, aryl or aralkyl, or R3 and R4 are identical or different alkyl, aryl or aralkyl, in the presence of a strong acid, to give a condensation product, and then treating the latter with a base in an anhydrous medium. These soft and hard resins are used, in combination with other film-forming agents, as surface-coating binders.

    10.
    发明专利
    未知

    公开(公告)号:DE2305023A1

    公开(公告)日:1974-08-08

    申请号:DE2305023

    申请日:1973-02-02

    Applicant: BASF AG

    Abstract: Flatting agents for coatings obtained by reacting a polyolefin wax (A) with a vinyl aromatic compound (B) and a copolymerizable alpha , beta -olefinically unsaturated dicarboxylic anhydride (C), optionally partially replaced by at least one alpha , beta -olefinically unsaturated monocaraboxylic acid, the molar ratio of (B) to (C) being from 0.7:1 to 1:0.7 and the sum of the weights of (B) and (C) being from 2 to 50 percent by weight of the weight of polyolefin wax (A). The reaction is carried out at temperatures of from 100 DEG to 200 DEG C, in the presence or absence of conventional free-radical polymerization initiators. The agents are particularly suitable for coatings containing organic solvents.

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