Laminated composite of a rigid polyurethane modified polyisocyanurate substrate and metal, plastic, cellulose, glass, ceramic or combinations thereof
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United States of America Patent
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Dec 12, 1989
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N/A
app pub date -
Aug 24, 1987
filing date -
Aug 24, 1987
priority date (Note) -
Expired
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Abstract
Laminated composites including method for the preparation thereof comprising forming in combination in a mold at least one layer of a rigid polyurethane modified polyisocyanurate by reacting in said mold, a reaction mixture of an organic di- or polyisocyanate, a cyclic alkylene carbonate and a polyether polyol in the presence of a soluble adduct amine-carbonate catalyst, and at least one layer of material selected from metal, plastic, cellulose, glass and ceramic or combinations thereof. The electrically conductive 'metal clad' laminates are especially useful as printed circuit boards.
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