Polyurea resin compound and hardener

A technology of polyurea resin and composition, applied in the field of polyurea resin composition and curing agent, can solve the problems of long time and excessive curing time, and achieve the effect of high curing reaction rate and realizing curing reaction rate

Inactive Publication Date: 2012-07-04
CANON CHEMICALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the curing time tends to be too long, so curing can take a long time under winter conditions including low temperature and low humidity

Method used

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  • Polyurea resin compound and hardener
  • Polyurea resin compound and hardener
  • Polyurea resin compound and hardener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] 100.0 parts by mass of the alicyclic polyisocyanate prepared above and 88.7 parts by mass of a curing agent were mixed using a planetary centrifugal mixer (AWATORI RENTAROAR-100, manufactured by Thinky Co.). These components were mixed at a room temperature of 25°C and a humidity of RH50±10% for a total of 1 minute consisting of a stirring mode for 0.5 minutes and a defoaming mode for 0.5 minutes, thereby obtaining a polyurea resin composition. The viscosity of the polyurea resin composition immediately after production was measured by the method described below, and the pot life was evaluated. The results are shown in Table 1.

[0092] The polyurea resin composition thus obtained was poured into a frame having a height of 2 mm mounted on a polypropylene plate (thickness: 3 mm), and formed into a 2-mm thick sheet. The sheet was left to stand at 25° C. and RH 50% for 7 days. The hardness of the sheet thus obtained was measured as described below. The results are shown...

Embodiment 2-4

[0113] (embodiment 2-4, comparative example 1-4)

[0114] A polyurea resin composition was prepared in the same manner as in Example 1 except that the polyisocyanate, curing agent, and ketimine or aldimine were changed to those listed in Tables 1 and 2. Tablets were prepared and evaluated using these compositions. The results are shown in Tables 1 and 2.

[0115] (Table 1)

[0116]

[0117] (Table 2)

[0118]

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Abstract

The invention relates to a polyurea resin compound and a hardener, with the polyurea resin compound meeting the following requirements: the resin compound provides sufficient time for formation; no long-term solidfication is required and high solidfication reaction rate is realized; the solidfication is properly carried out and not affected by the weather conditions, such as low temperature, low humidity, and the like; and no yellowing is created due to the exposure to the ultraviolet rays. The polyurea resin compound comprises aliphatic series / cycloaliphatic polyisocyanates and bi-component solidified type polyurea resin compound of a hardener for dimethyl (N-alky1 amino cycohexyl). The polyurea resin compound further comprises ketimine / aldimine. In the formula (1), R1 and R2 respectively and independently resprent alkyl having 1 to 10 carbon atoms; and R3 and R6 respectively and independently represent hydrogen atoms or having the alkyl having 1 to 5 carbon atoms.

Description

technical field [0001] The present invention relates to a polyurea resin composition and a curing agent, in particular to a polyurea resin composition and a curing agent that provide sufficient time for forming and achieve effective curing. Background technique [0002] A two-component curable polyurea resin composition composed of two liquid components of a polyisocyanate and a polyamine-containing curing agent is rapidly cured at room temperature, and the polyurea resin as a cured product has remarkable mechanical strength. In addition, aliphatic polyurea resins cause less yellowing due to ultraviolet light exposure, which is a disadvantage of aromatic polyurea resins, so they have been widely used in various paints, flooring materials, waterproofing materials, adhesives, sealants and coatings. Coating materials. The aliphatic polyurea resin is obtained by mixing a main agent composed of aliphatic polyisocyanate and a curing agent composed of aliphatic polyamine, and a cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/78C08G18/32
Inventor 富山崇川上智惠
Owner CANON CHEMICALS INC
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