中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.012 seconds)

    WATER-EMULSIFIABLE ISOCYANATES WITH IMPROVED PROPERTIES
    4.
    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
    6.
    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.

    REMOVAL OF MONOMERIC ALIPHATIC DIISOCYANATE IN AN ALIPHATIC POLYISOCYANATE USING SCAVENGERS
    8.
    发明申请
    REMOVAL OF MONOMERIC ALIPHATIC DIISOCYANATE IN AN ALIPHATIC POLYISOCYANATE USING SCAVENGERS 有权

    公开(公告)号：US20220403207A1

    公开(公告)日：2022-12-22

    申请号：US17770309

    申请日：2020-10-23

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Alvaro GORDILLO ,  Harald SCHAEFER ,  Ulrich MUELLER

    IPC: C09D175/12 ,  C08G18/79 ,  C08G18/78 ,  C08G18/70 ,  C08G18/63 ,  C08G18/44 ,  C08G18/62 ,  C08G18/48 ,  C08G18/42 ,  C08G18/02

    Abstract: The present invention relates to a process for the effective removal of residual monomeric aliphatic isocyanate from a reaction mixture comprising aliphatic polyisocyanate comprising (i) providing a reactor containing a scavenger comprising a zeolitic material, wherein the zeolitic material comprises SiO2 and optionally X2O3 in its framework structure, wherein X is a trivalent element; (ii) providing a reaction mixture comprising aliphatic polyisocyanate and monomeric aliphatic isocyanate; (iii) contacting the scavenger in the reactor with the reaction mixture provided in (ii) at a temperature lower than the boiling point of the residual monomeric aliphatic isocyanate for obtaining a product comprising aliphatic polyisocyanate with a reduced monomeric aliphatic isocyanate content, wherein if the zeolitic material comprises X2O3, the zeolitic material has an SiO2 to X2O3 molar ratio higher than 2.8:1, preferably higher than 5:1, more preferably higher than 30:1.

Patent Agency Ranking