Method for preparing polyurethanes forming composition, polyatomic alcohol composition, and polyurethane resin

A technology of composition and polyurethane, which is applied in the field of polyurethane resin, can solve problems such as inability to use, and achieve the effect of improving operability and formability

Inactive Publication Date: 2009-12-23
NIPPON POLYURETHANE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When forming a polyurethane resin, if all the raw materials are mixed and placed directly, the remaining mixed composition may continue to react and cannot be used

Method used

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  • Method for preparing polyurethanes forming composition, polyatomic alcohol composition, and polyurethane resin
  • Method for preparing polyurethanes forming composition, polyatomic alcohol composition, and polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0049] (1) Prepare the mixed composition

[0050] Mix 636 mass parts to obtain by 3-methyl-1,5-pentanediol (MPD) and adipic acid, number average molecular weight 2000, the normal temperature liquid polyester polyol (table 1 and 2) of nominal average functional group number Be referred to as polyester polyol A in table 2, hereinafter, be referred to as polyol A for short.), 159 mass parts are made of trimethylolpropane (TMP), 3-methyl-1,5-pentanediol (MPD) and Adipic acid obtained, number average molecular weight 3000, nominal average functional group number is 3 normal temperature liquid polyester polyols (referred to as polyester polyol B in Table 1 and Table 2, hereinafter referred to as polyol B.), JP-508 (acid phosphate: a mixture of mono(2-ethylhexyl acid phosphate) and bis(2-ethylhexyl acid phosphate) as a reaction inhibitor with respect to the polyol component 100ppm: Seonghok Kagaku Kogyo Co., Ltd.) and NW-96 of 1000 ppm relative to the polyol component to obtain a pr...

experiment example 2

[0060] (1) mixed composition modulation

[0061] A premix mixture composition having the same composition as in Experimental Example 1 was obtained except that JP-508 as a reaction inhibitor was used at 200 ppm and NW-96 as an organotin compound catalyst was used at 2000 ppm. In the same manner as in Experimental Example 1, 205 parts by mass of isocyanate A was mixed with the entire amount of the above-mentioned premix composition to obtain a polyurethane-forming mixed composition.

[0062] (2) Determination of usable time

[0063] In the same procedure as in Experimental Example 1, 50 g of the obtained polyurethane-forming mixed composition was put into a 100 ml glass bottle, and the time until the loss of fluidity was visually confirmed at a temperature of 25° C. was 48 hours.

[0064] (3) Determination of curing time

[0065] The time required for the amplitude to decrease from 9000 in the liquid state to 2000 in the rubber state was determined in the same procedure as in...

experiment example 3～5

[0069] (1) Prepare the mixed composition

[0070] A premix mixture composition having the same composition as in Experimental Example 1 was obtained except that JP-508 as a reaction inhibitor was 200 ppm (Experimental Example 3), 500 ppm (Experimental Example 4) or 1000 ppm (Experimental Example 5). In the same manner as in Experimental Example 1, 205 parts by mass of isocyanate A was mixed with the entire amount of each of the premix compositions described above to obtain a polyurethane-forming mixed composition based on each Experimental Example.

[0071] (2) Determination of usable time

[0072] According to the same procedure as in Experimental Example 1, 50 g of the polyurethane-forming mixed compositions of each Experimental Example were put into 100 ml glass bottles, and at a temperature of 25° C., timed until the fluidity disappeared visually, and the results were respectively It was 56 hours (experiment example 3), 72 hours (experiment example 4), and 48 hours (exper...

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Abstract

The present invention provides a method for preparing a polyurethanes forming composition, a polyatomic alcohol composition, and a polyurethane resin, capable of prolonging the usage time at a normal temperature and having excellent solidifying character. The polyurethanes forming composition of the invention cooperates and modulates the following components: an isocyanate component, containing at least one of fatty group and alicyclic isocyanate, and their derivant and modified substance, or their mixture; a liquid state polyatomic alcohol component at a normal temperature; a reaction restraining agent; and a normal temperature solid state organic metal series catalyst existed in the composition in a solid state.

Description

technical field [0001] The present invention relates to a polyurethane resin. More specifically, it relates to a polyurethane-forming composition, a polyol composition, and a method for producing a polyurethane resin capable of prolonging pot life at room temperature and having excellent curability. Background technique [0002] Polyurethane resin is tough and has excellent physical properties such as abrasion resistance, oil resistance, and solvent resistance. It is used in various forms such as foam, film, elastomer, powder, solution, and emulsion for flexible foam, rigid foam, and elastic foam. bodies, adhesives, coatings, adhesives and other uses. The polyurethane resin is formed by reacting a polyol and a polyisocyanate in the presence of a catalyst and appropriate additives such as a foaming agent, a surfactant, and a crosslinking agent. [0003] When forming a polyurethane resin, if all the raw materials are mixed and then left as they are, the remaining mixed compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/72C08G18/44C08G18/42C08G18/24
CPCC08G18/08C08G18/089C08G18/22C08G18/242C08G18/42C08G18/44C08G18/70
Inventor 小出和宏横田博荣
Owner NIPPON POLYURETHANE IND CO LTD
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