The present invention provides an alicyclic epoxy acrylate compound that can have high heat resistance in the form of a cured product when contained in a curable composition, a curable composition, and a cured product.

An alicyclic epoxy acrylate compound represented by the following Formula (1) where A denotes an oxygen atom and a curable composition comprising thereof are used:

##STR00001##

wherein one of R.sub.1 and R.sub.2 is a (meth)acryloyloxy group, the other of R.sub.1 and R.sub.2 is a hydrogen atom, R.sub.3 to R.sub.20 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and an alkoxy group, and A is an oxygen atom or A is not present, and a carbon atom to which R.sub.8 binds and a carbon atom to which R.sub.9 binds together form a double bond.

The present disclosure provides a modified allyl compound, and a modified bismaleimide prepolymer. The modified allyl compound is represented by formula (1), has a cyclopentadiene structure represented by formula (2), and contains a benzene ring or a benzene ring substituted with a linear alkane of lower polarity.

A method of preparing 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane is provided. According to the present invention, 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane (TCDDA) may be prepared with a high conversion rate and purity without a separate catalyst recovery process.

A variety of polycycloalkyl polynorbornene monomers and polymers derived therefrom are disclosed and claimed. The polymers and copolymers as disclosed herein are useful for forming pervaporation membranes, among other uses.

There are provided a novel cyclic olefin compound having a photoreactive group and a photoreactive polymer. The cyclic olefin compound is applicable to various photoreactions, such as of liquid crystal alignment layers and can be preferably used as a precursor of various organic compounds or polymers.

The present disclosure provides a modified allyl compound, and a modified bismaleimide prepolymer. The modified allyl compound is represented by formula (1), has a cyclopentadiene structure represented by formula (2), and contains a benzene ring or a benzene ring substituted with a linear alkane of lower polarity.