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:
Jul. 15, 2025
Filed:
Jun. 16, 2016
Basf SE, Ludwigshafen, DE;
Christiane Giesker, Osnabrueck, DE;
Mark Elbing, Bremen, DE;
Joerg Krogmann, Lohne, DE;
Patrick Lax, Lemfoerde, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms, where at least one blowing agent is used during the reaction. The present invention further relates to rigid polyurethane foams or rigid polyisocyanurate foams obtainable or obtained by such a process, and also to a polyol composition (PZ) at least comprising one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms. The present invention also relates to the use of such a polyol composition (PZ) for the production of rigid polyurethane foams or rigid polyisocyanurate foams, and also to the use of a rigid polyurethane foam or rigid polyisocyanurate foam of the invention as, or for the production of, insulation materials, preferably insulation sheets, sandwich elements, hot-water tanks, boilers, coolers, insulation foams, refrigerators or freezers.