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

A technology of polyurethane foam and composition, which can be used in special positions of vehicles, transportation and packaging, vehicle seats, etc., can solve problems such as unavailability, and achieve the effect of reducing environmental load and excellent durability.

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

In the methods described in these patent documents, it is not possible to obtain a plant-derived polyurethane foam having the physical properties required by the market as described above. In addition, by using a plant-derived polyol as a polyol component, moderate hardness and Resilience, and excellent durability of plant-derived polyurethane foam is unknown

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0146] 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.

[0147] (1) Core density (in the tables of the examples, the core density is abbreviated as "Dco")

[0148] 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, a cuboid foam sample is prepared, and the core density is measured.

[0149] (2) Hardness of the foam (abbreviated as "25% ILD" in the table of the examples)

[0150] The measurement was carried out in accordance with A method described in JIS K-6400. However, the measurement was performed on a foam having a thickness of 100 mm.

[0151] (3) resilience (in the table ...

Synthetic example 1

[0165] In a reactor equipped with a stirrer, a thermometer, a nitrogen introduction pipe, and a reflux condenser, 1192 g (4 moles) of castor oil fatty acid having an acid value of 188 mgKOH / g was added as a hydroxycarboxylic acid having an OH group with 15 or more carbon atoms. Condensation reaction was performed for 2 hours with 1200 g (4 mol) of hydrogenated castor oil fatty acid having an acid value of 187 mgKOH / g at a temperature in the range of 180 to 230° C. under a nitrogen atmosphere. During this condensation reaction, generated water was distilled out 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.

[0166] Next, in the above-mentioned reactor, 92 g (1 mole) of glycerin as a polyhydric alcohol and titanium lactate [(HO) 2 Ti(C 3 h 5 o 3 ) 2 ] 2.6 g (0.01 mol),...

Synthetic example 2

[0168] Except that the amount of castor oil fatty acid is changed to 1490g (5 moles), the amount of hydrogenated castor oil fatty acid is changed to 1500g (5 moles), and the condensation reaction time is changed from 2 hours to 3 hours, it is implemented in the same way as Synthetic Example 1 to obtain an acid value of 56 mgKOH / g of hydroxycarboxylic acid oligomers. The hydroxycarboxylic acid oligomer corresponds to a 3.3-mer of an equimolar mixture of castor oil fatty acid and hydrogenated castor oil fatty acid.

[0169] Next, except that the condensation reaction time was changed from 8 hours to 9 hours, the same procedure as in Synthesis Example 1 was carried out to obtain a plant-derived polyol which was liquid at room temperature, had an acid value of 1.6 mgKOH / g, and a hydroxyl value of 49 mgKOH / g. (A5-2).

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Abstract

A composition for polyurethane foams which comprises: one or more polyols and / or one or more polymer-containing polyols which are polyols containing, dispersed therein, fine polymer particles obtained by polymerizing a compound having an unsaturated bond; water; a catalyst; a foam stabilizer; and a polyisocyanate. The polyols comprise (A) a plant-derived polyol produced from a raw material obtained from a plant and (B) a low-monool-content polyol having a total degree of unsaturation of 0.050 meq / g or lower. Also provided is a polyurethane foam obtained by foaming the composition for polyurethane foams. The polyurethane foam contributes to a reduction in environmental burden and gives a cushioning material having a well-balanced combination of moderate hardness, moderate resilience, and excellent durability.

Description

technical field [0001] The present invention relates to a composition for polyurethane foam containing a plant-derived polyol, a polyurethane foam obtained from the composition, and uses thereof. More specifically, it relates to a composition for a plant-derived polyurethane foam capable of providing a polyurethane foam having moderate hardness and resilience in a well-balanced manner and excellent durability as a cushioning material for a vehicle seat cushion, etc., Plant-derived polyols suitable for the composition, plant-derived polyurethane foams 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 materials. That is, the plant-derived resin absorbs CO in the air from one side 2 , while forming raw materials obtained by photosynthetically g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G101/00B60N2/90
CPCC08G18/632C08G18/4072C08G18/4288C08G18/4891C08G18/635C08G18/7607C08G2101/0008C08G2101/0058C08G2101/0083C08G2350/00C08G2110/0008C08G2110/0058C08G2110/0083C08G18/28C08G18/40C08G2101/00C08J9/00
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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