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    PROCESSES FOR MAKING MOLDED FLEXIBLE FOAMS AND FLEXIBLE FOAMS PRODUCED THEREBY
    4.
    发明申请
    PROCESSES FOR MAKING MOLDED FLEXIBLE FOAMS AND FLEXIBLE FOAMS PRODUCED THEREBY 有权

    公开(公告)号：US20220235168A1

    公开(公告)日：2022-07-28

    申请号：US17155479

    申请日：2021-01-22

    申请人： Covestro LLC

    发明人： Michelle L. Montgomery ,  Paul O. Barley ,  Brandon W. Parks

    IPC分类号： C08G18/08 ,  C08G18/18 ,  B29C44/34 ,  B29C44/58 ,  C08G18/48 ,  C08G18/38 ,  C08G18/50 ,  C08G18/24 ,  C08G18/76

    摘要： A process for making a molded flexible foam. The processes includes: (a) depositing a foam-forming reaction mixture onto a surface of a mold cavity, and (b) allowing the foam-forming reaction mixture to react in the mold cavity. The foam-forming reaction mixture includes: (1) a polyisocyanate present in an amount of less than 45% by weight, based on the total weight of the reaction mixture; (2) an isocyanate-reactive composition; (3) a blowing agent; and (4) a catalyst. The isocyanate-reactive composition includes: (i) at least 50% by weight, based on the total weight of polyol in the isocyanate-reactive composition, of a polyether polyol having a functionality of greater than 2, an oxyethylene content of 0 to 50% by weight, based on the total weight of the polyether polyol, more than 50 mol % of primary OH groups and an OH number of 8 to 112 mg KOH/g; and (ii) a component comprising: (A) an amine-initiated polyether polyol (II), wherein amine-initiated polyether polyol (II) has an OH number of at least 500 mg KOH/g and a functionality of 2.5 to 4, and wherein amine-initiated polyether polyol (II) is present in an amount of greater than 0 and no more than 10% by weight, based on the total weight of polyol in the isocyanate-reactive composition; (B) a CO2-producing carbamic acid which is present in an amount of greater than 0 and no more than 10% by weight, based on the total weight of polyol in the isocyanate-reactive composition; or (C) both (A) and (B).

    HFO-CONTAINING COMPOSITIONS AND METHODS OF PRODUCING FOAMS
    8.
    发明申请
    HFO-CONTAINING COMPOSITIONS AND METHODS OF PRODUCING FOAMS 有权

    公开(公告)号：US20230115571A1

    公开(公告)日：2023-04-13

    申请号：US17496940

    申请日：2021-10-08

    申请人： Covestro LLC

    发明人： Brandon W. Parks

    IPC分类号： C08J9/14 ,  C08G18/50

    摘要： Polyurethane foam-forming compositions, methods of producing polyurethane foams, polyurethane foams produced from such compositions made by such methods, as well as isocyanate-reactive compositions. The polyurethane foam-forming compositions include a polyisocyanate; a polyol blend, and a physical blowing agent composition. The polyol blend includes an aromatic amine-initiated polyether polyol having an OH number of at least 200 mg KOH/g and a functionality of at least 3, wherein (i) the aromatic amine-initiated polyether polyol having an OH number of at least 200 mg KOH/g is present in amount of at least 20% by weight, based on the total weight of polyol, and (ii) the polyol blend has a content of —C2H4O— units of 2 to 7% by weight, based on total weight of the polyurethane foam-forming composition. The physical blowing agent composition includes cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,1,1,4,4,4-hexafluoro-2-butene.