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Quick-setting polyurethane - composition, the polyester diols with a low hydroxyl number / high molecular weight
Quick-setting polyurethane - composition, the polyester diols with a low hydroxyl number / high molecular weight
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机译:快速固化聚氨酯-组成,低羟值/高分子量的聚酯二醇
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摘要
The subject invention provides reactive hot melt adhesive compositions comprising polyurethane prepolymers which have an isocyanate index greater than one and which are prepared from a low hydroxyl number composition comprising high molecular weight polyester diols which have a relatively low melting point. These reactive hot melt adhesive compositions have a faster setting speed than conventional reactive hot melt adhesive compositions. The subject invention also provides a method for bonding articles together which uses such reactive hot melt adhesive compositions and articles which comprise the reactive hot melt adhesive compositions.
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