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modified catalysts for phenolic foams and processes.
modified catalysts for phenolic foams and processes.
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机译:酚醛泡沫和工艺的改性催化剂。
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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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