STORAGE-STABLE POLYURETHANE CASTING COMPOUND FOR EMBEDDING HOLLOW FIBRES IN THE PRODUCTION OF FILTER ELEMENTS

    公开(公告)号:US20210163659A1

    公开(公告)日:2021-06-03

    申请号:US16610436

    申请日:2018-04-27

    Applicant: BASF SE

    Abstract: Disclosed are polyurethane encapsulating compounds for embedding hollow fibers of filter elements, obtainable by mixing a polyol component (A) and an isocyanate component (B), including at least one aromatic isocyanate, to give a reaction mixture and reacting the mixture to completion to give the polyurethane encapsulating compound. The polyol component (A) includes at least one fatty-acid-based polyol (a1) having a hydroxyl number of greater than 50 to less than 500 mg KOH/g and a functionality of from 2-6, and at least one bismuth catalyst (a2), obtainable by mixing a bismuth carboxylate (a2-1) with an amine compound (a2-11) having at least one tertiary nitrogen atom and at least one isocyanate-reactive hydrogen atom. The molar ratio of bismuth to amine compound (a2-11) is 1:0.5-1:50. Also disclosed are methods for producing filter elements using the polyurethane encapsulating compounds and to uses of the polyurethane encapsulating compounds for the embedding of hollow fibers.

    Process for producing polyurethane-polyisocyanurate elastomers, sealing materials and adhesives having a long pot life

    公开(公告)号:US12162973B2

    公开(公告)日:2024-12-10

    申请号:US17442311

    申请日:2020-03-25

    Applicant: BASF SE

    Abstract: Described herein is a process for preparing a polyurethane elastomer including the steps of (A) preparing an isocyanate prepolymer (a), where the isocyanate prepolymer has an isocyanate content in the range of ≥1 wt.-% to ≤9 wt.-%, and (B) preparing a reaction mixture by mixing at least one epoxy compound (b) with the isocyanate prepolymer (a) in presence of at least one catalyst (c), and where the amount of the alkali metal or alkaline earth metal salt is 0.00001 to 0.1 mol per kg of the total weight of the isocyanate prepolymer (a), the epoxy compound (b) and the catalyst (c), and heating the mixture to at least 80° C. to obtain the polyurethane elastomer. Also described herein are a polyurethane elastomer obtained by the process and a method of using the polyurethane elastomer as part of a roller or as a sealant.

    Composite article
    16.
    发明授权

    公开(公告)号:US10816130B2

    公开(公告)日:2020-10-27

    申请号:US16070124

    申请日:2017-01-13

    Applicant: BASF SE

    Abstract: A composite article includes a low surface energy polymer layer, a poly(meth)acrylate layer, an epoxide layer, and a hydrolytically resistant layer. The poly(meth)acrylate layer is disposed on and in direct contact with the low surface energy polymer layer and includes the reaction product of at least one acrylate that is polymerized in the presence of an organoborane initiator, such that the poly(meth)acrylate includes boron. The epoxide layer is disposed on and in direct contact with the poly(meth)acrylate layer. The hydrolytically resistant layer is disposed on and in direct contact with the epoxide and is the reaction product of an isocyanate component and an isocyanate-reactive component reacted in the presence of a curing agent. The isocyanate-reactive component includes a polydiene polyol and the curing agent crosslinks the carbon-carbon double bonds of the polydiene polyol.

    Damping element in shoe soles
    17.
    发明授权

    公开(公告)号:US10165823B2

    公开(公告)日:2019-01-01

    申请号:US15834725

    申请日:2017-12-07

    Applicant: BASF SE

    Abstract: A process for producing a shoe sole, having a hybrid material of a polyurethane foam as a matrix material and an inlay component of expanded particles of a thermoplastic polyurethane is provided. The process includes preparing an inlay form by joining the expanded particles of a thermoplastic polyurethane in an amount and size of the desired inlay; preparing the shoe sole by placing the prepared inlay form in a shoe sole mold such that an edge of the inlay component is 0.2 cm or more from an edge of the shoe sole mold; embedding the inlay form within a reaction mixture in the shoe sole mold; and reacting the reaction mixture to form the matrix in the shoe sole mold.

    METHOD FOR PRODUCING COMPACT POLYURETHANES WITH IMPROVED HYDROLYTIC STABILITY

    公开(公告)号:US20180237657A1

    公开(公告)日:2018-08-23

    申请号:US15556875

    申请日:2016-03-10

    Applicant: BASF SE

    Abstract: The present invention relates to a process for preparing a polyurethane, comprising the reaction of a composition (Z1) at least comprising a compound (P1) reactive toward isocyanates, and a composition (Z2) at least comprising a polyisocyanate, wherein compound (P1) is obtained by the reaction of at least one polyepoxide with a compound (V1) selected from the group consisting of polyetheramines and polyetherols. The present invention further relates to polyurethanes obtained by such a process, and to the use of a polyurethane of the invention for coating of pipelines, as a “field joint” or of subsea equipment, for example “christmas trees”, for the offshore sector, and as a glass-syntactic polyurethane.

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