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US 2010/0249291 A1Published application
Reactive hot-melt composition and molded article using the same
AssigneeUbe Industries, Ltd.
InventorsHideki Ichihashi, Takayoshi Kaneko
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AssigneeUbe Industries, Ltd.
InventorsHideki Ichihashi, Takayoshi Kaneko
Estimating the term…
The present invention relates to a reactive hot melt composition that is capable of shortening a molding cycle and is excellent in adhesion with a metal, such as aluminum and the like, and provides (1) a reactive hot melt composition containing a composition containing a crystalline polyesterpolyol and an amorphous polyester polyol, and a polyisocyanate reacted with the composition, and having a semicrystallization time of 150 seconds or less and a crystallization heat of from 30 to 90 J/g, (2) a reactive hot melt composition containing a composition containing 100 parts by mass of a polyol containing from 30 to 95% by mass of a crystalline polyesterpolyol and from 5 to 70% by mass of an amorphous polyesterpolyol, and from 0.05 to 5 parts by mass of a crystallization nucleating agent added to the polyol, and a polyisocyanate reacted with the composition, and (3) a molded article containing the same molded.
A reactive hot melt composition comprising a composition comprising a crystalline polyesterpolyol (A) and an amorphous polyester polyol (B), and a polyisocyanate (F) reacted with the composition, and having a semicrystallization time of 150 seconds or less and a crystallization heat of from 30 to 90 J/g under a temperature condition by differential calorimetry of cooling from a melting temperature to 50° C. at a temperature decreasing rate of 500° C. per minute and then maintaining at 50° C.
A reactive hot melt composition comprising a composition comprising 100 parts by mass of a polyol containing from 30 to 95% by mass of a crystalline polyesterpolyol (A) and from 5 to 70% by mass of an amorphous polyesterpolyol (B), and from 0.05 to 5 parts by mass of a crystallization nucleating agent (E) added to the polyol, and a polyisocyanate (F) reacted with the composition.
Dependencies are inferred from the claim text.