Patent ID: 8258196
Filing Date: 2012-09-04
Classification: C08G,C08J

Abstract:
1. A method for producing a rigid closed-cell polyurethane foam, which comprises a step of reacting a polyol having a hydroxyl value of from 200 to 800 mgKOH/g and an average number of functional groups of from 3 to 6 with a polyisocyanate compound in the presence of an amino-modified silicone compound, a catalyst, a blowing agent and a surfactant, wherein the blowing agent is water and is present in an amount of from 4 to 12 parts by mass per 100 parts by mass of the polyol, wherein the amino-modified silicone compound is in an amount from 0.001 to 0.1 parts by mass per 100 parts by mass of the polyol and is at least one member selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2): wherein in the formula (1), R wherein the rigid closed-cell polyurethane foam has a core density of from 20 to 40 kg/m