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Release agent composition for polyurethane foam molding

A technology of polyurethane foam and mold release agent, which is applied in the field of mold release agent composition for polyurethane foam molding. It can solve the problems of poor surface properties, mold pollution, and regular mold cleaning, so as to prevent foam cracking, reduce friction sound, and eliminate VOC. The effect of countermeasures on the problem

Inactive Publication Date: 2013-08-21
SACCORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the molding of urethane foam, the urethane foam may be broken during molding to cause depressions on the surface, that is, bubble cracks, and the surface properties may deteriorate.
In addition, due to the residual resinized mold deposits on the surface of the mold, so-called mold pollution occurs, so the mold must be cleaned regularly

Method used

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  • Release agent composition for polyurethane foam molding
  • Release agent composition for polyurethane foam molding
  • Release agent composition for polyurethane foam molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0042] Disperse the release component (A) in the lipophilic solvent (C) according to the prescribed ratio shown in Table 1, and mix and stir the oil-soluble oligomer (B) and the surfactant (D) in the dispersion to obtain Prepare the first mixed liquid, then mix the ether (E) and water according to the specified ratio shown in Table 1 to prepare the second mixed liquid, pour the second mixed liquid into the first mixed liquid while stirring and mix well , thereby becoming a water-based release agent composition of a W / O emulsion. Here, the "aqueous release agent composition" refers to a release agent composition containing at least 50% or more of water in the total amount. Table 1 shows the compounding ratio of each component when the total amount of the release agent composition of each Example and each comparative example is set to 100 each.

Embodiment 1

[0065] Object: Example 1, Comparative Example 1

[0066] Evaluation performance: bubble cracking, mold contamination

[0067] Contents: After spraying the release agent composition of Example 1 and Comparative Example 1 above on an iron mold (170×115×21 mm) at 35° C., it was dried for 40 seconds. Next, using a commercially available raw material for cold-curing polyurethane foam, it was mixed at a predetermined compounding ratio, poured into a mold, and reacted at a temperature of 35° C. for 5 minutes. Then, the surface state (presence or absence of cracks) of the demolded polyurethane foam molded article was visually observed and evaluated. Regarding the evaluation in Table 1, "⊚" indicates a state without cell rupture, "◯" indicates a state where the cell diameter tends to be too large, and "×" indicates a state with cell rupture.

[0068] In addition, the mold after molding was washed with mineral turpentine, and the amount of resinization reaction product remaining on th...

Embodiment 2

[0070] Target: Examples 2, 3, Comparative Examples 2-4

[0071] Evaluation performance: bubble cracking, mold contamination

[0072] Contents: After spraying the release agent compositions of Examples 2 and 3 and Comparative Examples 2 to 4 above on an iron mold (170×115×21 mm) at 65° C., it was dried for 1 minute. Next, using a commercially available raw material for high elasticity (HR) polyurethane foam, it was mixed in a predetermined compounding ratio, poured into the mold, and reacted at a temperature of 65° C. for 7 minutes. Then, the surface state (presence or absence of cracks) of the demolded polyurethane foam molded article was visually observed and evaluated. The evaluation in Table 1 shows that it is the same as performance test 1.

[0073] In addition, the mold after molding was washed with mineral turpentine, and the amount of resinization reaction product remaining on the mold was visually observed to evaluate the degree of mold contamination. The evaluation...

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PUM

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Abstract

The invention provides a release agent composition for polyurethane foam molding with great release property, capable of preventing crack and mold contamination during molding. Providing a total weight of the release agent composition of 100 weight parts, 1.0 to 20 weight parts of release composition, 0.01 to 10 weight parts of oil-soluble oligomer, 1.0-25 weight parts of lipophilic solvent are added into a first mixture liquid containing 0.01-10 weight parts of surfactant and a second mixture liquid containing 5-20 weight parts of ether and 50-60 weight parts of water, and the mixture is modulated to the release agent composition for polyurethane foam molding represented as an aqueous dispersion W / O type emulsion containing the release agent in the lipophilic solvent phase.

Description

technical field [0001] The invention relates to a release agent composition for polyurethane foam molding. Background technique [0002] In the molding of the polyurethane foam, the foaming of the polyurethane foam may occur during molding to cause depressions on the surface, that is, cell cracks, thereby degrading the surface properties. In addition, since resinized mold deposits remain on the surface of the mold, so-called mold contamination occurs, and the mold must be cleaned regularly. Therefore, in order to reduce these problems, a mold release agent that prevents the adhesion of the polyurethane foam to the mold is widely used when the polyurethane foam is molded. If this mold release agent is used, the polyurethane foam as a molded product can be easily released from the mold, and the aforementioned bubble cracking and mold contamination can be suppressed. [0003] As the release component contained in the release agent, there are known: silicone, wax, etc., and as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/62
Inventor 杉田末信内村邦博
Owner SACCORD
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