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POLYESTER-POLYURETHANE HYBRID RESIN MOLDING COMPOSITIONS COMPRISING POLYURETHANE WITH UNITS DERIVED FROM ALIPHATIC ISOCYANATES
POLYESTER-POLYURETHANE HYBRID RESIN MOLDING COMPOSITIONS COMPRISING POLYURETHANE WITH UNITS DERIVED FROM ALIPHATIC ISOCYANATES
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机译:包含聚氨酯和脂肪族异氰酸酯衍生单元的聚酯-聚氨酯聚合树脂模塑组合物
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摘要
A hybrid resin composition is described, with the composition comprising: A. an A part composition comprising an aliphatic polyfunctions! isocyanate compound and a free radical polymerization initiator; and B. a B part composition comprising an ethylenically unsaturated, substantially water-free polyester polyol and a polyurethane catalyst. The A part composition can contain a non-interfering solvent, e.g., styrene, and the B part composition typically has an acid value of 5 or less (based on solids). For outdoor use, the B part composition is preferably free of tertiary hydrogens, ether glycols and terephthalic acid residues.
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