Thermoplastic polyurethane from recycled raw materials

    公开(公告)号:US11999816B2

    公开(公告)日:2024-06-04

    申请号:US16980084

    申请日:2019-03-12

    Applicant: BASF SE

    Abstract: The present invention relates to a process for producing a thermoplastic polyurethane reacting at least one thermoplastic polyurethane (TPU-1) or a polyurethane mixture comprising a thermoplastic polyurethane (TPU-1) with at least one compound (V1) comprising two hydroxyl groups to obtain a mixture (G-a) comprising a thermoplastic polyurethane (TPU-2) and the reaction of the mixture (G-a) with a mixture (G-b) comprising an isocyanate composition (ZI) comprising at least one diisocyanate and optionally and a polyol composition (ZP) comprising at least one polyol (P2) to obtain a thermoplastic polyurethane (TPU target), wherein the proportion of the employed components (ZI) and (ZP) is matched to the hard segment content of the employed thermoplastic polyurethane (TPU-1), (V1) and the hard segment content of the thermoplastic polyurethane (TPU target). The invention further relates to a thermoplastic polyurethane obtained or obtainable by such a process and to the use thereof for producing extruded, injection molded and pressed articles as well as foams, cable sheathings, hoses, profiles, drive belts, fibers, nonwovens, films, moldings, soles, sporting goods, shoes, plugs, housings, damping elements for the electricals industry, automotive industry, mechanical engineering, 3D printing, medicine and consumer goods.

    TPU shrink material
    25.
    发明授权

    公开(公告)号:US10907006B2

    公开(公告)日:2021-02-02

    申请号:US16063514

    申请日:2016-12-21

    Applicant: BASF SE

    Abstract: The present invention relates to a method for producing a molded body (MB) comprising the production of a thermoplastic polyurethane, the production of a molded body (MB*) from the thermoplastic polyurethane, heating the molded body (MB*) to a temperature below the temperature at which there is permanent deformability of the molded body (MB*), and above the switching temperature of the thermoplastic polyurethanes, elongating the heated molded body (MB*) with obtention of a molded body (MB), and cooling the molded body (MB) to a temperature below the switching temperature of the thermoplastic polyurethane, and the molded body obtained or obtainable by such a method. The present invention further relates to a thermoplastic polyurethane with shape memory and the use of a thermoplastic polyurethane for producing a molded body with shape memory effect in a temperature range from 0° C. to 130° C.

    Reduced discoloration of thermoplastic polyurethanes based on polymer polyols via incorporation of aliphatic isocyanates

    公开(公告)号:US09920159B2

    公开(公告)日:2018-03-20

    申请号:US14770224

    申请日:2014-02-24

    Applicant: BASF SE

    Abstract: The present invention relates to a process for producing a polyurethane, comprising at least the following steps (A) bringing at least one polymer polyol into contact with an amount of from 0.1 to 20 mol %, based on the entire amount of polyisocyanate, of at least one first polyisocyanate, in order to obtain a prepolymer which in essence has terminal hydroxy groups, and (B) bringing the prepolymer from step (A) into contact with at least one second polyisocyanate and optionally with further additives, in order to obtain the polyurethane, to a polyurethane obtainable via said process, and also to the use of this polyurethane as cladding in automobiles, coatings, cables, plug connectors, solar modules, foils, moldings, shoe soles and shoe components, balls and ball components, rollers, fibers, profiles, laminates and wiper blades, hoses, cable plugs, bellows, drag cables, cable sheathing, gaskets, nonwoven fabrics, drive belts, or damping elements.

    Producing rigid polymer foams
    30.
    发明授权

    公开(公告)号:US09815931B2

    公开(公告)日:2017-11-14

    申请号:US13772971

    申请日:2013-02-21

    Applicant: BASF SE

    Abstract: A process for producing a rigid polymer foam comprises reacting components A to C in the presence of component D or an isocyanate-functional prepolymer of components A and B with component C in the presence of component D, the total amount of which is 100 wt %, (A) 35 to 65 wt % of at least one polyisocyanate component A, (B) 5 to 50 wt % of at least one polyol component B, (C) 1 to 59 wt % of at least one polycarboxylic acid component C, and (D) 0.01 to 3 wt % of at least one Lewis base component D, wherein the reaction takes place with release of carbon dioxide.

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