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    WATER-EMULSIFIABLE ISOCYANATES WITH IMPROVED PROPERTIES
    1.
    发明申请
    WATER-EMULSIFIABLE ISOCYANATES WITH IMPROVED PROPERTIES 有权

    公开(公告)号：US20220242996A1

    公开(公告)日：2022-08-04

    申请号：US17621709

    申请日：2020-06-18

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Harald SCHAEFER

    IPC: C08G18/08 ,  C08G18/10 ,  C09D175/08 ,  C08G18/70 ,  C08G18/22

    Abstract: A process for producing a water-emulsifiable polyisocyanate formulation, in which, in a first process step,
    (A) a dispersion-active reaction product (E) is prepared from at least one diisocyanate selected from the group of hexamethylene 1,6-diisocyanate, pentamethylene 1,5-diisocyanate, 4,4′-di(isocyanatocyclohexyl)methane, 1-isocyanato-3,3,5-trimethyl-5-(isocyanatomethyl)cyclohexane, tolylene 2,4- and 2,6-diisocyanate, tetramethylxylylene diisocyanate, p-xylylene diisocyanate, 2,4′- and 4,4′-diisocyanatodiphenylmethane, with at least one mono- or polyhydric polyalkylene ether alcohol having 2 to 4 carbon atoms in the alkylene groups that comprises a polymer chain having at least 8 ethylene oxide units, and the resultant reaction product (E), in a second process step, (B) is mixed with at least one (cyclo)aliphatic polyisocyanate having an average NCO functionality of 2.2 to 5.0, preferably of 2.5 to 4.0, wherein step (B) is performed in the presence of an allophanatization catalyst and the conditions are chosen such that (E) and the polyisocyanate form allophanate groups, characterized in that the allophanatization catalyst is at least one salt consisting of a metal cation and at least one dithiophosphate anion.

    PREPARATION OF POLYISOCYANATES CONTAINING IMINOOXADIAZINEDIONE GROUPS AND THEIR USE
    3.
    发明申请
    PREPARATION OF POLYISOCYANATES CONTAINING IMINOOXADIAZINEDIONE GROUPS AND THEIR USE 有权

    公开(公告)号：US20250019483A1

    公开(公告)日：2025-01-16

    申请号：US18709569

    申请日：2022-11-11

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Nico VELING ,  Kerstin HEINEN ,  Harald SCHAEFER ,  Jens SCHEIDEL ,  Thomas GENGER

    IPC: C08G18/16 ,  C08G18/02

    Abstract: A process for the preparation of polyisocyanates containing iminooxadiazinedione groups, comprising reacting at least one (cyclo)aliphatic diisocyanate in the presence of at least one oligomerization catalyst, and when the reaction has reached a predeterminable degree of conversion, based on the (cyclo)aliphatic diisocyanates, stopping the reaction by addition of at least one catalyst poison for the oligomerization catalyst, wherein the oligomerization catalyst is a salt containing a fluoride or poly(hydrogen)fluoride [F−×(HF)m] as anion and the catalyst poison is a solution containing at least one alcohol comprising at least 6 carbon atoms as solvent and wherein m is a number between 0.01 and 20.

    COLOR-STABLE CURING AGENT COMPOSITIONS COMPRISING WATER-DISPERSIBLE POLYISOCYANATES
    4.
    发明申请
    COLOR-STABLE CURING AGENT COMPOSITIONS COMPRISING WATER-DISPERSIBLE POLYISOCYANATES 有权

    公开(公告)号：US20230095196A1

    公开(公告)日：2023-03-30

    申请号：US17795594

    申请日：2021-01-21

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Sebastian ROLLER

    IPC: C08K5/13 ,  C09D175/08 ,  C08G18/08 ,  C08G18/79 ,  C08G18/70 ,  C08G18/28

    Abstract: A polyisocyanate composition comprising (A) at least one polyisocyanate obtainable by reacting (c) at least one diisocyanate or polyisocyanate, (d) at least one surfactant comprising a mixture of compounds based on the following formulae (I) and (II); in which R1 and R2 independently of one another are alkyl, cycloalkyl or aryl, it being possible for each of the stated radicals to be substituted by aryl, alkyl, aryloxy, alkyloxy, heteroatoms and/or heterocycles, said mixture of compounds of formulae (I) and (II) being characterised in that the molar ratio between compound (II), i.e. the monoester-type compound, and compound (I), i.e. the diester-type compound, is from 5:95 to 95:5, and (c) at least one monofunctional polyalkylene glycol, —and (B) at least one sterically hindered phenol.

    PROCESS FOR THE PREPARATION OF ALICYCLIC POLYISOCYANATE
    5.
    发明申请
    PROCESS FOR THE PREPARATION OF ALICYCLIC POLYISOCYANATE 审中-公开

    公开(公告)号：US20200148809A1

    公开(公告)日：2020-05-14

    申请号：US16614202

    申请日：2018-05-07

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Alexander PANCHENKO ,  Klaus BREUER ,  Frank HETTCHE ,  Chee Kean THAM

    IPC: C08G18/75 ,  C08G18/80 ,  C08G18/32

    Abstract: The present invention relates to a polyisocyanate (P) of general formula (I), the method for preparing polysisocyanate (P) of general formula (I) and the use of polyisocyanate (P) of general formula (I) as crosslinking reagent in clearcoats. The method for preparing polyisocyanate (P) of general formula (I) comprises the reaction of a reaction mixture (RM), which comprises at least one cyclic isocyanate of general formula (IIIa), (IIIb), (IIIc), (IIId), (IIIe) and/or (IIIf) and at least one alcohol having at least two hydroxyl groups, to obtain polyisocyanate (P) of general formula (I).

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