The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2026
Filed:
May. 17, 2021
Ineos Styrolution Group Gmbh, Frankfurt am Main, DE;
INEOS STYROLUTION GROUP GMBH, Frankfurt am Main, DE;
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 C-C-alkylene group or an oxygen or sulfur atom, Rand Rrepresent, e.g., a C-C-alkyl residue, C-C-cycloalkyl residue or benzyl residue; and R, R, Rand Rrepresent hydrogen or a C-C-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).