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1. (US20180030196) METHOD FOR MANUFACTURING A POLYURETHANE-MODIFIED FOAM, FOAM OBTAINED, AND USES

Pub. No.:    20180030196    International Application No.:    15661329
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Fri Jul 28 01:59:59 CEST 2017
IPC: C08G 18/08
C08J 9/00
C08J 9/14
C08G 18/42
Applicants: SOPREMA
UNIVERSITE DE STRASBOURG
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Inventors: Alice ARBENZ
Stephanie LAURICHESSE
Remi PERRIN
Pierre Etienne BINDSCHEDLER
Luc AVEROUS
Title: METHOD FOR MANUFACTURING A POLYURETHANE-MODIFIED FOAM, FOAM OBTAINED, AND USES
Abstract:

Disclosed is a method for manufacturing an isocyanurate polyurethane-modified foam, called “PUIR,” including: a) providing an oil or oil mixture at least 50% by weight of the fatty acids having a carbon chain of C18 or more, the fatty acids having an overall iodine number Iiodine of at least 100 g of I2/100 g; b) epoxidating at least 50% of the double bonds in the oil to form the corresponding epoxides; and c) directly reacting, in situ, the epoxides that are obtained above with isocyanate or diisocyanate groups for obtaining corresponding oxazolidone derivatives, without passing through the intermediate formation of polyols obtained from epoxides, in the presence of at least one suitable catalyst and at least one expanding agent, so as to obtain the isocyanurate polyurethane-modified foam “PUIR.” Also disclosed are products, such as rigid insulation material, in particular as a material or panels of rigid insulation for roofing.