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Modified phenolic foam catalyst and process for the preparation of closed cell phenolic foams by the use of this catalyst
Modified phenolic foam catalyst and process for the preparation of closed cell phenolic foams by the use of this catalyst
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机译:改性酚醛泡沫催化剂和使用该催化剂制备闭孔酚醛泡沫的方法
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摘要
The invention relates to the preparation of closed cell phenolic resin foams produced from compositions of phenolaldehyde resole resins, and the foam products thus prepared. More particularly the present invention relates to the preparation of phenolic resin foams by a method employing a novel modified phenolic foam catalyst. The invention also relates to these modified phenolic foam catalysts which includes an aromatic sulphonic acid and resorcinol.
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