TACKINESS-REALIZING ADHESIVE AND PRODUCTION METHOD FOR LAMINATED BUILDING MATERIAL USING THE SAME
PROBLEM TO BE SOLVED: To provide a tackiness-realizing polyurethane adhesive which is excellent in workability and in durability after adhesion, is especially suitable for producing a laminated building material by a process having a temporary fixing step in an automatic conveying line, realizes a s...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a tackiness-realizing polyurethane adhesive which is excellent in workability and in durability after adhesion, is especially suitable for producing a laminated building material by a process having a temporary fixing step in an automatic conveying line, realizes a strong tackiness by the irradiation with light, e.g. ultraviolet rays, to temporarily fix a building material member, and can finally realize a high adhesive power by curing with water, e.g. moisture. SOLUTION: This tackiness-realizing adhesive contains an isocyanate-group- containing polyurethane resin prepared by reacting an active hydrogen compound with 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, and optionally an organic polyisocyanate other than these diisocyanates. The adhesive may further contain an ethylenically unsaturated compound. The method for producing a laminated building material uses the adhesive. |
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