Compounds with substituted cyclic hydrocarbon moieties linked by secondary or tertiary oxycarbonyl containing moiety providing reworkable cured thermosets

Compounds, which when cured provided compositions reworkable through thermal decomposition, having the structural formula ##STR59## wherein each Q is the same or different and is ##STR60## wherein each R is independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert butyl, C.sub.1-4 alkoxy, halogen, cyano, nitro, and phenyl, and R.sub.3 and R.sub.4 together form an epoxy group and Q" is ##STR61## and n is 0 and p is 0 and r is 1 or n is 1 and p is 1 and r is 1 or Q" is a bond between O and Q and n is 0 and p is 0 and r is 1 and p is 0 and r is 1, or Q" is ##STR62## and n is 0 and p is 0 and r is 1, or Q" is ##STR63## and p is 1 and n is 1 and r is 0 and t is 1 or p is 0 and n is 1 and r is 0 and t is 0, and R.sub.1 and R.sub.2 are each independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, and phenyl, with the proviso that R.sub.1 and R.sub.2 are selected to provide at least one tertiary oxycarbonyl containing moiety and/or at least one R is a substituent which is directly linked to a carbon which is directly joined to oxygen and is selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl and isobutyl, and when n and p and r are 1, or when Q" is ##STR64## compounds are symmetrical;

• or wherein each Q is the same or different and comprises an aromatic group independently selected from the group consisting of phenyl, biphenyl, and naphthyl substituted at one position with a functional group selected from the group consisting of cyanate, methacrylate, acrylate, epoxymethoxy, acetylene and maleimide and having at each other position a substituent independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert butyl, C.sub.1-4 alkoxy, halogen, cyano, nitro and phenyl with the functional group of both Q's being the same and Q" is --C(R.sub.7)(R.sub.8)-- or ##STR65## wherein each R.sub.7 and R.sub.8 is independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, and phenyl, with the proviso that R.sub.7 and R.sub.8 are selected to provide at least one tertiary oxycarbonyl containing moiety, and Q.sub.2 is phenyl having at each open position a substituent independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert butyl, C.sub.1-4 alkoxy, halogen, cyano, nitro and phenyl, and p is 0 and n is 0 and r is 1.