Polyisocyanate ester composition and its making method and method for preparing hard polyurethane foam

A technology of polyisocyanate and rigid polyurethane, which is applied in the fields of polyisocyanate composition and its preparation and manufacture of rigid polyurethane foam, can solve problems such as inability to manufacture rigid polyurethane foam, and achieves high production, excellent shape stability, and foam. high intensity effect

Inactive Publication Date: 2005-08-03
NIPPON POLYURETHANE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, it has not been possible to produce a rigid polyurethane foam having a sufficiently high adhesive force to various adherends by conventionally known methods including the methods (1) to (3) above.

Method used

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  • Polyisocyanate ester composition and its making method and method for preparing hard polyurethane foam
  • Polyisocyanate ester composition and its making method and method for preparing hard polyurethane foam
  • Polyisocyanate ester composition and its making method and method for preparing hard polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～14

[0304] According to the combination shown in the following Table 4, the mixed solution (mixing mass ratio = 100:100) of the polyisocyanate composition (A liquid) and the polyol composition (B liquid) was sprayed and applied to the quilt made of plywood. On the plywood (1000mm * 1000mm) of adherend (50mm * 50mm), make polyisocyanate mixture (A) and polyol ( B) Reaction to form a rigid polyurethane foam on the entire surface of the plywood (1000 mm×1000 mm) to which the adherend is attached.

[0305] Here, spray foaming conditions and the like are as follows.

[0306] ・Foaming machine: Gasma one spraying foaming machine "FF-1600 type"

[0307] ·The temperature of the adherend: 5℃

[0308] ・Basic heating temperature: 45°C

[0309] ·Foam thickness: 30~40mm

[0310]

[0311] According to the combination shown in the following Table 4, the mixed solution (mixing mass ratio = 100:100) of the polyisocyanate composition (A liquid) and the polyol composition (B liquid) was sprayed...

Embodiment 15～28、 comparative example 6～10

[0322]

[0323] According to the combination shown in the following Table 5, the mixed solution (mixing mass ratio = 100:100) of the polyisocyanate composition (A liquid) and the polyol composition (B liquid) was sprayed and applied to the adhesive layer coated with JIS G3312. On the plywood (1000mm×1000mm) of the adherend (50mm×50mm×0.27mm) composed of hot-dip galvanized steel sheet, the whole surface of the plywood (1000mm×1000mm) with the adherend (galvanized steel Rigid polyurethane foam is formed on the face. Here, spray foaming conditions and the like are the same as in Example 1. For the rigid polyurethane foam formed on the above-mentioned adherend (galvanized steel sheet), adopt the same method as that of Examples 1-14, Comparative Examples 1-5 and Reference Examples 1-2 to measure for the adherend ( galvanized steel) bonding strength. The results are collectively shown in Table 5 below.

[0324] polyisocyanate group

Embodiment 29～42

[0325]

[0326] According to the combination shown in the following Table 6, the mixed solution (mixing mass ratio = 100:100) of the polyisocyanate composition (A liquid) and the polyol composition (B liquid) is sprayed and applied to the aluminum backing paper. On the plywood (1000mm x 1000mm) of the adherend (50mm x 50mm), rigid polyurethane foam was formed on the entire surface of the plywood (1000mm x 1000mm) to which the adherend (aluminum backing paper) was pasted. Here, spray foaming conditions and the like are the same as in Example 1. For the rigid polyurethane foam formed on the above-mentioned adherend (aluminum backing paper), the same method as that of Examples 1-14, Comparative Examples 1-5 and Reference Examples 1-2 was used to measure the effect on the adherend ( Aluminum backing paper) adhesive strength. The results are collectively shown in Table 6 below.

[0327] polyisocyanate group

compound (type)

polyol composition

(type)

...

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Abstract

The object of this invention is to provide a polyisocyanate composition producing a rigid polyurethane foam having good adhesiveness to various kinds of adherends, a low shrinkage percentage and excellent shape stability. The polyisocyanate composition used for producing the rigid polyurethane foam comprises the following. (A0) a polymeric MDI (diphenylmethane diisocyanate), (A1) a first isocyanate group-terminated prepolymer obtained by reacting the polymeric MDI with a polyester polyol (a1) having sulfo groups or sulfonate groups in the molecular structure, (A2) a second isocyanate group-terminated prepolymer prepared by reacting the polymeric MDI with a polyether monool (a2) and (A3) a silicone foam stabilizer.

Description

technical field [0001] The present invention relates to a polyisocyanate composition, a preparation method thereof, and a method for producing rigid polyurethane foam. More specifically, it relates to a polyisocyanate composition capable of producing a rigid polyurethane foam having high adhesion to an adherend, a method for preparing the polyisocyanate composition, and a rigid polyurethane foam using the polyisocyanate composition. manufacturing method. [0002] In the present invention, the term "rigid polyurethane foam" includes "isocyanurate-modified polyurethane foam" unless otherwise specified. Background technique [0003] Conventionally, rigid polyurethane foam has been used in a wide range of applications such as insulation materials for refrigerators, refrigerated warehouses, and building materials, as well as spraying applications. [0004] Polymerized MDI (polyphenylene polymethylene polyisocyanate) containing MDI (diphenylmethane diisocyanate) is used as the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/10C08G18/40C08G18/42C08G18/72C08G101/00
Inventor 菅野晶城野孝喜笹原俊昭
Owner NIPPON POLYURETHANE IND CO LTD
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