公开(公告)号：US20250002636A1

公开(公告)日：2025-01-02

申请号：US18709551

申请日：2022-12-12

Applicant: BASF SE

Inventor： Waldemar SDRUJKOWSKI ,  Stefan BOKERN ,  Iran OTERO MARTINEZ ,  Elmar POESELT

IPC: C08G18/66 ,  C08G18/10 ,  C08G18/32 ,  C08G18/48 ,  C08J11/06 ,  C08L75/08

Abstract: Disclosed herein is a method for producing a thermoplastic molded polyurethane flexible foam having a foam density of 15 to 100 g/dm3 including mixing of (a) Diisocyanate, (b) Polyol (c) 3 to 20 wt.-% based on the total weight of components a) to c), of one or more chain extenders, (d) optionally catalyst and (e) optionally fillers and/or polyurethane additives, mixing the reaction mixture with a gas to form a pre-foam having a density of 110 to 800 g/dm3 injecting the pre-foam into a mold, applying vacuum to the mold to further expand the pre-foam and curing the expanded pre-foam. Further disclosed herein are a thermoplastic flexible polyurethane foam, obtained from the method, a composite including the thermoplastic flexible polyurethane foam and a method of recycling the composite.

公开(公告)号：US20220064398A1

公开(公告)日：2022-03-03

申请号：US17414723

申请日：2019-12-09

Applicant: BASF SE

Inventor： Iran OTERO MARTINEZ ,  Alexander RAETH ,  Waldemar SDRUJKOWSKI ,  Bianca FRISCHE

IPC: C08J9/12 ,  C08G18/20 ,  C08G18/76 ,  C08G18/63 ,  C08G18/40 ,  C08G18/48 ,  C08G18/08 ,  A47C7/18

Abstract: The present invention relates to polyol mixtures comprising (b1) at least one polyether polyol having a hydroxyl value of 10 to 60 mg KOH/g and having a high proportion of ethylene oxide, (b2) at least one polyether polyol having a hydroxyl value of 10 to 100 mg KOH/g, a low proportion of ethylene oxide, and not less than 40% primary OH groups, and (b3) at least one polyether polyol having a hydroxyl value of 10 to 100 mg KOH/g, a low proportion of ethylene oxide, and not more than 30% primary OH groups, and b5) from 0.25 to 10 further parts by weight of polyurea, based on 100 parts by weight of components b1) to b3), optionally present as a constituent of a dispersion polyol based on one or more of components b1) to b3).
The invention further relates to a process for producing flexible polyurethane foams using the mixtures according to the invention, to the thereby obtainable flexible polyurethane foams, and to the use of the thereby obtainable flexible polyurethane foams as a cushioning element for furniture or as a seat element.