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Process for producing rigid polyurethane foam

A technology of rigid polyurethane and manufacturing methods, applied in the field of rigid polyurethane foam, can solve the problems of small thermal conductivity, fragility and low thermal conductivity, and achieve excellent dimensional stability, excellent adhesion, and thermal conductivity The effect of less deterioration

Active Publication Date: 2007-11-07
TOHO CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using conventional Mannich condensates, polyhydric alcohols formed by addition of ethylenediamine, etc. For rigid polyurethane foam with a lot of water in the formula, it is difficult to obtain low thermal conductivity, less deterioration of thermal conductivity over time, less brittleness in low temperature environments, and excellent adhesion. Rigid urethane foam that fully satisfies the necessary properties desired for practical use, such as excellent dimensional stability

Method used

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  • Process for producing rigid polyurethane foam
  • Process for producing rigid polyurethane foam
  • Process for producing rigid polyurethane foam

Examples

Experimental program
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Embodiment

[0065] Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited thereto. In addition, in this embodiment, the performance of the panel foam is cited as a preferred example, but the use of the rigid polyurethane foam prepared by the method of the present invention is not limited to the panel foam application.

[0066] The properties of the panel foams shown in Comparative Examples 1 to 3 and Examples 1 to 3 described later were produced and measured in the following procedures. Inner volume 500cm 3 Add the respective ingredients based on the quality of the recipe to a paper cup, mix well to achieve uniformity, and make a premix. Adjust the stock solution temperature of the premix solution to 20°C. Next, pour in Mirionet MR-200 manufactured by Nippon Polyurethane Industry Co., Ltd. as a polymeric isocyanate, which has been preliminarily adjusted to a stock solution temperature of 20°C, and stir at a rotation ...

Embodiment 1

[0104] The formulation (12) in Example 1 shown in Table 4 is based on 5.50 parts of water, 0.61 parts of TMHDA, and Toray Dow Corning for 100 parts of Toho Polyol TE-280 manufactured by Toho Chemical Industry Co., Ltd. 1.5 parts of SZ-1718 manufactured by (former Japan Unica Company) and 197.0 parts of Mirionet MR-200 manufactured by Japan Polyurethane Industry Co., Ltd. are mixed to make the total mass 300g. 100 parts of Dongbang Polyol AN-280 manufactured by Industrial Co., Ltd. are mixed according to the comparison of 5.36 parts of water, 1.04 parts of TMHDA, 1.5 parts of SZ-1718, and 189.7 parts of MR-200, so that the total mass is 300g; formula (14) For 100 parts of Toho Polyol XE-280 produced by Toho Chemical Industry Co., Ltd., mix in proportions of 4.36 parts of water, 1.04 parts of TMHDA, 1.5 parts of SZ-1718, and 189.7 parts of MR-200, so that the total mass is 300g, formula (15) is relative to Dongho Polyol NE-310 manufactured by Toho Chemical Industry Co., Ltd., mi...

Embodiment 2

[0107] Formulation (16) in Example 2 shown in Table 5 is 5.60 parts of water, 1.09 parts of TMHDA, Toray Dou Corning for 100 parts of Toho Polyol AE-270 manufactured by Toho Chemical Industry Co., Ltd. 1.5 parts of SZ-1718 manufactured by (former Japan Unica Company) and 203.1 parts of Mirionet MR-200 manufactured by Japan Polyurethane Industry Co., Ltd. are mixed to make the total mass 300g. 100 parts of Toho Polyol AE-320 manufactured by Industrial Corporation, mixed in the ratio of 5.15 parts of water, 1.00 parts of TMHDA, 1.5 parts of SZ-1718, and 178.2 parts of MR-200, so that the total mass is 300g; formula (18) For 100 parts of Toho polyol AE-370 manufactured by Toho Chemical Industry Co., Ltd., mix in proportions of 4.78 parts of water, 0.53 parts of TMHDA, 1.5 parts of SZ-1718, and 158.9 parts of MR-200, so that the total mass is 300g; Prescription (19) is relative to 100 parts of Toho Polyol AB-372 manufactured by Toho Chemical Industry Co., Ltd., mixed in a ratio of...

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Abstract

The present invention provides a manufacturing method of a rigid polyurethane foam for a heat insulation material that satisfies performance required for practical use, such as a low thermal conductivity over a long period, and excellent adhesiveness and excellent dimensional stability under a low temperature environment. The manufacturing method of a rigid polyurethane foam for a heat insulation material, which is formed from blowing and molding using a mixture that includes polyisocyanate, a polyol, and a blowing agent, wherein a polyol prepared by addition-polymerizing ethylene oxide and propylene oxide to an aromatic monoamine compound or an aromatic diol compound.

Description

technical field [0001] The present invention relates to a method for producing rigid polyurethane foam used as a heat insulating material. More specifically, it relates to a rigid polyurethane foam that maintains low thermal conductivity for a long period of time and has good adhesion in a low-temperature environment. Background technique [0002] Rigid polyurethane foam formed by foam molding of a mixture containing polyisocyanate, polyol, blowing agent, catalyst, flame retardant and other additives is widely used as a material with excellent molding processability. Rigid polyurethane foam is different from embedded insulation materials such as foamed styrene, and forms a composite structural material by self-bonding with surface materials during foaming, which has the advantage of increasing strength. In addition, rigid polyurethane foam can be formed by various foaming methods such as pouring and spraying, and it can be foamed and formed on the construction site without ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G101/00
CPCC08G18/5027C08G18/4879C08G2101/0025C08G2101/0083C08G2330/00C08G2110/0025C08G2110/0083
Inventor 长谷川干大川直野口知洋
Owner TOHO CHEM IND
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