Disclosed herein are compositions and methods of making phenolic compounds and phenolic resins. The resins include multifunctional epoxies, amino glycidyl derivatives, alkanoate derivatives, alkyl ether derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of novolac resin.

Disclosed herein are compositions and methods of making phenolic compounds, and resins comprising these phenolic compounds. The compounds include multifunctional epoxies, amino glycidyl derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of phenols and bisphenols. In one embodiment, a compound is of formula I ##STR00001##
wherein R.sub.1 is H or Z; each R.sub.2, R.sub.3, and R.sub.4, independently, are N(Z).sub.2, N(CH.sub.2OZ).sub.2, N(CH.sub.2CH.sub.2OZ).sub.2, N(CH.sub.2OH).sub.2, N(CH.sub.2NH.sub.2).sub.2, OZ, CH.sub.2OZ, CH.sub.2CH.sub.2OZ, CH.sub.2OH, CH.sub.2NH.sub.2, OC(CH.sub.3).sub.3, or O-(alkylene)-CH.sub.3; and Z is ##STR00002##

Disclosed herein are compositions and methods of making phenolic compounds, and resins comprising these phenolic compounds. The compounds include multifunctional epoxies, amino glycidyl derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of phenols and bisphenols. In one embodiment, a compound is of formula I ##STR00001##
wherein R.sub.1 is H or Z; each R.sub.2, R.sub.3, and R.sub.4, independently, are N(Z).sub.2, N(CH.sub.2OZ).sub.2, N(CH.sub.2CH.sub.2OZ).sub.2, N(CH.sub.2OH).sub.2, N(CH.sub.2NH.sub.2).sub.2, OZ, CH.sub.2OZ, CH.sub.2CH.sub.2OZ, CH.sub.2OH, CH.sub.2NH.sub.2, OC(CH.sub.3).sub.3, or O-(alkylene)-CH.sub.3; and Z is ##STR00002##

There is provided an epoxy compound exhibiting excellent heat resistance and flame retardance of a cured product thereof; an epoxy resin containing the epoxy compound; a curable composition and a cured product thereof; and a semiconductor sealing material. The epoxy compound has a diarylene[b,d]furan structure, in which at least one of two arylene groups has a naphthylene skeleton and two arylene groups each include a glycidyloxy group on an aromatic nucleus thereof.

There is provided an epoxy compound exhibiting excellent heat resistance and flame retardance of a cured product thereof; an epoxy resin containing the epoxy compound; a curable composition and a cured product thereof; and a semiconductor sealing material. The epoxy compound has a diarylene[b,d]furan structure, in which at least one of two arylene groups has a naphthylene skeleton and two arylene groups each include a glycidyloxy group on an aromatic nucleus thereof.

Disclosed herein are compositions and methods of making phenolic compounds and phenolic resins. The resins include multifunctional epoxies, amino glycidyl derivatives, alkanoate derivatives, alkyl ether derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of novolac resin.

Disclosed herein are compositions and methods of making phenolic compounds and phenolic resins. The resins include multifunctional epoxies, amino glycidyl derivatives, alkanoate derivatives, alkyl ether derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of novolac resin.

The present disclosure provides a bio-based epoxy chain extender and a preparation method thereof, belonging to the technical field of chain extenders, and the preparation method includes the following steps: (1) mixing ESO and CD and carrying out catalytic reaction to obtain ESO.sub.n-CD; and (2) mixing and heating the ESO.sub.n-CD with concentrated sulfuric acid, dropwise adding a mixture of glacial acetic acid and hydrogen peroxide for stirring reaction, and after the stirring reaction, carrying out extraction and separation to remove a solvent to obtain the bio-based epoxy chain extender. The present disclosure also provides a bio-based epoxy chain extender prepared by the preparation method.

The present disclosure provides a bio-based epoxy chain extender and a preparation method thereof, belonging to the technical field of chain extenders, and the preparation method includes the following steps: (1) mixing ESO and CD and carrying out catalytic reaction to obtain ESO.sub.n-CD; and (2) mixing and heating the ESO.sub.n-CD with concentrated sulfuric acid, dropwise adding a mixture of glacial acetic acid and hydrogen peroxide for stirring reaction, and after the stirring reaction, carrying out extraction and separation to remove a solvent to obtain the bio-based epoxy chain extender. The present disclosure also provides a bio-based epoxy chain extender prepared by the preparation method.

Disclosed herein are compositions and methods of making phenolic compounds, and resins comprising these phenolic compounds. The compounds include multifunctional epoxies, amino glycidyl derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of phenols and bisphenols.