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Polyol composition for rigid polyurethane foam, and method for producing rigid polyurethane foam

A technology of polyol composition and rigid polyurethane, which is applied in the field of polyol composition for rigid polyurethane foam and rigid polyurethane foam, can solve the problems of large global warming coefficient, etc., and achieve the purpose of suppressing the decline of physical properties, Good storage stability of stock solution

Inactive Publication Date: 2020-02-07
SEKISUI SOFLAN WIZ CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As the above-mentioned blowing agent, Freon compounds such as CFC-11 have been used in the past, but this CFC-11 was banned because it would cause the destruction of the ozone layer, and it was replaced by HCFC-141b. Replacement of HFC-245fa or HFC-365mfc, but this HFC-245fa or HFC-365mfc has a problem of large GWP (global warming coefficient)

Method used

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  • Polyol composition for rigid polyurethane foam, and method for producing rigid polyurethane foam
  • Polyol composition for rigid polyurethane foam, and method for producing rigid polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8、 comparative example 1～6

[0076] [Preparation of polyol composition]

[0077] The constituent materials of the polyol composition are shown in Table 1.

[0078] [Table 1]

[0079]

[0080] The constituent materials shown in Table 1 were mixed and stirred with the formulation described in Table 2 below, and the polyol compositions of Examples 1-8 and Comparative Examples 1-6 were prepared.

[0081] 〔Manufacture of rigid polyurethane foam〕

[0082] The temperature of the polyol composition of Examples 1 to 8 and Comparative Examples 1 to 6 was adjusted to 20°C, and then, the temperature was adjusted to 20°C with the isocyanate component (crude diphenylmethane produced by Sumika Bayer Urethane Co., Ltd. Diisocyanate "Sumidur 44V-20L", NCO%: 31%) was mixed with a laboratory mixer at a ratio of NCO / OH equivalent ratio of 175 or 350, and foamed and solidified to obtain a rigid polyurethane foam. Table 2 shows the evaluation results of the rigid polyurethane foam.

[0083] [Table 2]

[0084]

[008...

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Abstract

This polyol composition for rigid polyurethane foam comprises a polyol compound, a blowing agent, and a compatibilizing agent and is to be mixed with an isocyanate ingredient comprising a polyisocyanate compound and then foamed and cured to form rigid polyurethane foam. The blowing agent comprises 1-chloro-3,3,3-trifluoropropene, and the compatibilizing agent comprises one or more compounds selected from the group consisting of [gamma]-butyrolactone, [epsilon]-caprolactone, methoxypropyl acetate, dimethyl sulfoxide, N-methylpyrrolidone, N,N-dimethylacetamide, and N,N-dimethylformamide. This polyol composition for rigid polyurethane foam, although containing 1-chloro-3,3,3-trifluoropropene as the blowing agent, has satisfactory raw-liquid storage stability regarding separation inhibition, etc., and can give rigid polyurethane foam inhibited from decreasing in physical property.

Description

technical field [0001] The present invention relates to a polyol composition for rigid polyurethane foam containing 1-chloro-3,3,3-trifluoropropene (hereinafter also referred to as HFO-1233zd) as an essential component as a blowing agent component, and rigid polyurethane Method of making foam. Background technique [0002] Rigid polyurethane foam is a material known as a heat insulating material, a lightweight structural material, and the like. The rigid polyurethane foam is formed by mixing a polyol composition containing a polyol compound and a foaming agent as essential components, and an isocyanate component, foaming, and curing. [0003] As the above-mentioned blowing agent, Freon compounds such as CFC-11 have been used in the past, but this CFC-11 was banned because it would cause the destruction of the ozone layer, and it was replaced by HCFC-141b. It is a replacement of HFC-245fa or HFC-365mfc, but this HFC-245fa or HFC-365mfc has a problem of a large GWP (global w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/00C08K5/1535C08G101/00
CPCC08G18/40C08J9/144C08K5/12C08G2110/0025
Inventor 安乐夏子神野昌洋吉川悠人翔玉井裕介
Owner SEKISUI SOFLAN WIZ CO LTD
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