Composition for polyurethane foam, polyurethane foam obtained from the composition, and use thereof

A technology of polyurethane foam and composition, applied in the field of composition for polyurethane foam, can solve the problems of inability to obtain, increase in hardness, etc., and achieve the effects of reducing environmental load, excellent resilience, and excellent low

Active Publication Date: 2008-08-06
MITSUI CHEM & SKC POLYURETHANES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is such a problem that the hardness of the polyurethane foam formulated to exhibit low resilience at room temperature is significantly increased at low temperatures such as below 0°C compared with room temperature. Therefore, in order to solve this problem, Various studies have been conducted on the problem (for example, refer to Patent Document 1)
[0006] The methods described in these patent documents cannot obtain low-resilience polyurethane foams derived from plants having the above-mentioned physical properties required by the market, especially the property of avoiding hardness increase at low temperatures

Method used

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  • Composition for polyurethane foam, polyurethane foam obtained from the composition, and use thereof
  • Composition for polyurethane foam, polyurethane foam obtained from the composition, and use thereof
  • Composition for polyurethane foam, polyurethane foam obtained from the composition, and use thereof

Examples

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Embodiment

[0151] [Example]

[0152] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to these Examples. "Parts" and "%" in the examples represent "parts by mass" and "% by mass", respectively. Analysis and measurement in Examples and Comparative Examples were performed by the following methods.

[0153] (1) core density (in the table of embodiment, core density is abbreviated as " Dco ")

[0154] The measurement was carried out in accordance with the measuring method of apparent density described in JIS K-6400. In the present invention, the skin of the foam sample is removed to form a cuboid foam sample, and the core density is measured.

[0155] (2) hardness of foam (in the table of embodiment, abbreviation is done " 25%CLD ")

[0156] The measurement was carried out according to method A described in JIS K-6400. However, the measurement was performed on a foam having a thickness of 50 mm. In the hardness measurement, pre-...

Synthetic example 1

[0169] In a reactor with a stirrer, a thermometer, a nitrogen introduction pipe, and a reflux condenser, 1192 g (4 mole ) and 1200 g (4 mol) of hydrogenated castor oil fatty acid having an acid value of 187 mgKOH / g were subjected to a condensation reaction at a temperature in the range of 180 to 230° C. for 2 hours under a nitrogen atmosphere. During this condensation reaction, generated water was distilled off to the outside of the system. Thus, a hydroxycarboxylic acid oligomer having an acid value of 70 mgKOH / g was obtained. The hydroxycarboxylic acid oligomer corresponds to a 2.7-mer of an equimolar mixture of castor oil fatty acid and hydrogenated castor oil fatty acid.

[0170] Next, in the above-mentioned reactor, 92 g (1 mole) of glycerin was added as a polyhydric alcohol, and titanium lactate [(HO) was added as a catalyst. 2 Ti(C 3 h 5 o 3 ) 2 ] 2.6 g (0.01 mol), and carried out the condensation reaction at a temperature in the range of 180 to 230° C. for 8 hour...

Synthetic example 2

[0172] To 1 mole (2340 g) of the plant-derived polyol (B5-1) obtained in Synthesis Example 1 with a hydroxyl value of 60 mgKOH / g, tetrakis[tris(dimethylamino)phosphinoideneamino]phosphonium hydroxide was added Tetrakis[tris(dimethylamino)phosphoranilidenamino]phosphonium hydroxide) 0.01 mole (7.6g), dehydration under reduced pressure at 100°C for 6 hours. Thereafter, at a reaction temperature of 80°C and a maximum reaction pressure of 3.8kg / cm 2 Propylene oxide is subjected to addition polymerization under certain conditions. Next, at a reaction temperature of 100°C and a maximum reaction pressure of 3.8kg / cm 2 Under the conditions, the addition polymerization of ethylene oxide is carried out to obtain the plant-derived polyol (B6-1). The polyol (B6-1) contains 8 C 6 h 13 The side chain represented by (hexyl) had a hydroxyl value of 49 mgKOH / g, an average number of functional groups of 2.5, and a terminal oxyethylene group content of 15% by mass.

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Abstract

The polyurethane foam composition related to the present invention is a composition for polyurethane foam containing polyol, catalyst, foam stabilizer, blowing agent and polyisocyanate. The polyol produced has more than three side chains composed of hydrocarbon chains with 4 or more carbon atoms per molecule, an average number of functional groups of 1.5 to 4.5, and a hydroxyl value of 80 to 140 mgKOH / g. Moreover, the polyurethane foam which concerns on this invention is obtained by foaming the composition for polyurethane foams. The above-mentioned polyurethane foam is derived from plants, contributes to the reduction of environmental load, and has excellent low resilience, especially has the property of avoiding increase in hardness at low temperature.

Description

technical field [0001] The present invention relates to a polyurethane foam composition containing a plant-derived polyol, a polyurethane foam obtained from the composition, and uses thereof. In more detail, the present invention relates to a material capable of providing an excellent low resilience, suitable for use as a shock absorbing material, a sound absorbing material, a shock absorbing material, and can also reduce body pressure when used as a cushion material for a chair and a mattress. A plant-derived composition of a polyurethane foam that distributes more uniformly so as to reduce fatigue and decubitus, a polyol suitable for the composition, and a plant-derived polyurethane foam obtained from the composition, and uses thereof. Background technique [0002] In recent years, from the viewpoint of reducing environmental load, plant-derived resins obtained from plant resources have been sought instead of petroleum-derived resins that use petroleum resources as raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G101/00
CPCC08G18/4288C08G18/4891C08G18/6607C08G2101/00C08G2350/00C08G2110/005C08G2110/0008C08G2110/0083C08G18/28C08G18/42C08L2555/64
Inventor 野泽克久佐佐木正弘大久保和彦
Owner MITSUI CHEM & SKC POLYURETHANES INC
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