Forming material
AssigneeAlcare Co., Ltd.
InventorsYoshikazu Matsumoto, Hiroyuki Hirano
Life of this patent
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Abstract
This invention provides a forming material which is cured within a short period by a small amount of water, has a molding property necessary for forming and has a sufficient fixing function. In a forming material 4 where a granulated material 1 coated with a moisture-curable urethane prepolymer 2 is tightly sealed with a water-permeable material 3 having smaller openings than the size of the granulated material, the moisture-curable urethane prepolymer 2 is a polyurethane prepolymer comprising polyisocyanate and a polyol and the polyisocyanate NCO % contained therein is made 1-5% by weight.
Claims9
In a forming material where a granulated material coated with a moisture-curable urethane prepolymer is tightly sealed with a water-permeable material having smaller openings than the size of the granulated material;
- the improvement comprising, a moisture-curable forming material which is characterized in that the moisture-curable urethane prepolymer is a polyurethane prepolymer, effectively cures using a water spray as a result of compounding its polyisocyanate and its polyol constituents to (a) contain terminal isocyanate radicals, and (b) containing a total of isocyante NCO radicals therein of about 1-5% by weight.
Dependencies are inferred from the claim text.