Patent ID: 9090747
Filing Date: 2015-07-28
Classification: B60N,C08G,C08J,Y10T

Abstract:
1. A process for manufacturing molded urethane foam pads for vehicle seats, wherein molded urethane foam pads having a core density of 55 to 65 kg/m 3 are produced from materials comprising a plant-derived polyol (A), a non-plant-derived polyol (B), water, a catalyst, a foam stabilizer and a polyisocyanate, and further wherein: the process comprises a step of: preparing a resin premix comprising the non-plant-derived polyol (B), water, the catalyst and the foam stabilizer, thereafter mixing the resin premix with the plant-derived polyol (A) and the polyisocyanate, injecting the mixture into a mold, reacting, foaming and curing the mixture, and releasing the product from the mold, the plant-derived polyol (A) is a polyol which is obtained by condensing a polyhydric alcohol of 6 hydroxyl groups with a plant-derived, C15 or higher hydroxycarboxylic acid and which has a hydroxyl value of 45 to 55 mg KOH/g, the non-plant-derived polyol (B) is a mixture of a polyol having a hydroxyl value of 18 to 26 mg KOH/g, and a polymer-dispersed polyol in which fine particles of a polymer of a compound having an unsaturated bond are dispersed in the polyol having a hydroxyl value of 18 to 26 mg KOH/g, and the content of a plant-derived component contained in the plant-derived polyol (A) is 14 to 19 wt % based on 100 wt % of the materials.