公开(公告)号：US20230227627A1

公开(公告)日：2023-07-20

申请号：US17999010

申请日：2021-05-17

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Hans-Werner SCHMIDT ,  Klaus KREGER ,  Bastian KLOSE

IPC: C08K5/20 ,  C08J9/14 ,  C08J9/12 ,  C08J9/00 ,  C07C233/43

CPC classification number: C08K5/20 ,  C08J9/141 ,  C08J9/122 ,  C08J9/0028 ,  C07C233/43 ,  C08J2201/024 ,  C08J2203/06 ,  C08J2203/14 ,  C08J2205/044 ,  C08J2205/052 ,  C08J2325/06 ,  C08J2325/12

Abstract: The invention relates to a process for producing small-cell foams from a styrene-polymer component (S) and an additive of formula (I), wherein Z represents a C1-C5-alkylene group or an oxygen or sulfur atom, R1 and R2 represent, e.g., a C3-C12-alkyl residue, C3-C12-cycloalkyl residue or benzyl residue; and R3, R4, R5 and R6 represent hydrogen or a C1-C6-alkyl residue, comprising the steps of: —heating at least a styrene-polymer component (S) to obtain a molten, polymeric molding compound, —introducing a propellant (T) into the molten molding compound to form a foamable composition (Z), and—foaming the foamable composition to obtain a foamed molding, the molten polymeric molding compound containing at least one carboxylic acid derivative of the general formula (I).