POLYURETHANE FOAM COMPOSITION, AND METHOD FOR PRODUCING SOFT POLYURETHANE FOAM

• Main Authors: OGAWA YUTA, SOFUKU HIROSHI, NASA TOSHIHISA
• Format: Patent
• Language: English; French; Japanese
• Published: 31.10.2013
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

This polyurethane foam composition contains (A) a polyisocyanate, (B) an active hydrogen-containing compound that contains (B1) a polyol and (B2) water, a catalyst and (C) one or more types of plasticizer selected from among the group consisting of monoester compounds, diester compounds, triester compounds and tetraester compounds, wherein the content of component (C) is 0.5-20 parts by mass relative to 100 parts by mass of the polyol (B1). A soft polyurethane foam having improved compressive residual strain under conditions of moist heat and having a good feel is obtained. La composition de mousse polyuréthanne ci-décrite contient (A) un polyisocyanate, (B) un composé contenant de l'hydrogène actif qui contient (B1) un polyol et (B2) de l'eau, un catalyseur et (C) un ou plusieurs types de plastifiants choisis dans le groupe constitué par les composés monoester, les composés diester, les composés triester et les composés tétraester, la teneur en composant (C) étant de 0,5 à 20 parties en poids pour 100 parties en poids du polyol (B1). La mousse polyuréthanne souple obtenue a une contrainte résiduelle de compression améliorée dans des conditions de chaleur humide et procure une bonne sensation.