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di-(4-beta-hydroxyethoxyphenol)-ketone and di-(4-beta-hydroxypropoxyphenyl)-ketone.
The preferred aromatic diols are:hexanediol-l,6, butanediol-l,4,
2,2-di-(4-beta-hydroxyethoxyphenyD-propane and 2,2-di-(4-hydroxypropoxyphenyl)-propane.

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