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Reaction-curable polyurethane resin composition and two-part reaction-curable polyurethane adhesive made by using the same

A polyurethane resin, curing technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive additives, etc., can solve problems such as unachieved, achieve the effect of inhibiting foaming phenomenon and excellent bonding strength

Active Publication Date: 2010-09-22
NIPPON POLYURETHANE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not yet been possible to use only castor oil-based polyols, which are raw materials derived from natural products, as polyol components.

Method used

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  • Reaction-curable polyurethane resin composition and two-part reaction-curable polyurethane adhesive made by using the same
  • Reaction-curable polyurethane resin composition and two-part reaction-curable polyurethane adhesive made by using the same
  • Reaction-curable polyurethane resin composition and two-part reaction-curable polyurethane adhesive made by using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0101] Examples 1-12, Comparative Examples 1-12

[0102] Prepare the above-mentioned "OH-1" ~ "OH-24" as the main ingredient, prepare the above "NCO-1" ~ "NCO-3" as the curing agent, and prepare the liquid The temperature was adjusted to 25°C. According to the combinations shown in the following Tables 5 to 8, and according to the main agent / curing agent=3 / 1 (mass ratio) and a total of 100g, they were packed into a stainless steel container, and a bench drill (Ryobi Sales Co.) was stirred and uniformly mixed for 10 seconds at a rotation speed of 300 rpm to obtain a mixture (composition of the present invention / composition for comparison).

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Abstract

To provide a reaction-curable polyurethane resin composition which is extremely excellent in liquid storage stability (both homogeneity and reactivity) and in reactivity (uniformity of reaction) and a solventless, two-pack, reaction-curable polyurethane adhesive composed of ''a base resin'' and ''a curing agent'' which are based on the constituents of the composition. The above problems can be solved by selecting and using a specific catalyst, by selecting and using a polymeric MDI having an acidity above a specific level as the organic polyisocyanate, and by specifying the equivalent ratio of isocyanato of the organic polyisocyanate to hydroxyl of castor oil polyol (A).

Description

technical field [0001] The present invention relates to a solvent-free reaction-curable polyurethane resin composition, and a two-component reaction-curable polyurethane composed of a "main ingredient" and a "curing agent" based on the components constituting the composition. Adhesive (specifically, the above-mentioned "main ingredient" and "curing agent" are both liquid at room temperature (eg 25°C), a solvent-free two-component mixing heat reaction curing type polyurethane adhesive) . Background technique [0002] Polyurethane resins are known to be suitable as adhesives and are used in many applications. Usually, the "main agent (1st component)" mainly composed of polyol and the "curing agent (2nd component)" mainly composed of organic polyisocyanate are uniformly mixed, and the mixture is applied to the On the sticky body, it is used as an adhesive after being heated and cured. This so-called two-component curing form is used in many fields even now. [0003] For a tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/64C09J11/04C09J175/04
CPCC08G18/7664C09J175/04
Inventor 西村裕章川口忠之
Owner NIPPON POLYURETHANE IND CO LTD
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