A universal adhesion promoter contains a compound based on polybutadiene having at least one repeat unit selected from the following divalent radicals:

##STR00001##

Provided is a curable composition including: a curable oligomer having, in its molecule, a branched polyolefin structure and a (meth)acryloyl group; a saturated cycloalkyl (meth)acrylate monomer having, in its molecule, a saturated cyclic hydrocarbon structure and a (meth)acryloyl group; and a saturated chain alkyl (meth)acrylate monomer having, in its molecule, a saturated chain hydrocarbon structure and a (meth)acryloyl group.

Provided is a curable composition including: a curable oligomer having, in its molecule, a branched polyolefin structure and a (meth)acryloyl group; a saturated cycloalkyl (meth)acrylate monomer having, in its molecule, a saturated cyclic hydrocarbon structure and a (meth)acryloyl group; and a saturated chain alkyl (meth)acrylate monomer having, in its molecule, a saturated chain hydrocarbon structure and a (meth)acryloyl group.

Disclosed is an imine group-containing novel compound which is useful as a polymer modifier, a modified conjugated diene-based polymer including a functional group derived from the novel compound and having excellent affinity with a filler, a method for preparing the polymer, and a rubber composition including the polymer, and provides an imine group-containing compound represented by Formula 1, a modified conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing the polymer.

##STR00001##

Disclosed is an imine group-containing novel compound which is useful as a polymer modifier, a modified conjugated diene-based polymer including a functional group derived from the novel compound and having excellent affinity with a filler, a method for preparing the polymer, and a rubber composition including the polymer, and provides an imine group-containing compound represented by Formula 1, a modified conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing the polymer.

##STR00001##

Disclosed is an imine group-containing novel compound which is useful as a polymer modifier, a modified conjugated diene-based polymer including a functional group derived from the novel compound and having excellent affinity with a filler, a method for preparing the polymer, and a rubber composition including the polymer, and provides an imine group-containing compound represented by Formula 1, a modified conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing the polymer.

##STR00001##

A defoamer composition contains a compound based on polybutadiene having at least one repeat unit selected from the divalent radicals:

##STR00001##

Oxo-nitrogenated iron complex having general formula (I): in which: R.sub.1 and R.sub.2, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.3 represents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15 alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they are selected from. linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, —OCOR.sub.4 groups or —OR.sub.4 groups in which R.sub.4 is selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes. ##STR00001##

Oxo-nitrogenated iron complex having general formula (I): in which: R.sub.1 and R.sub.2, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.3 represents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15 alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they are selected from. linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, —OCOR.sub.4 groups or —OR.sub.4 groups in which R.sub.4 is selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes. ##STR00001##

Oxo-nitrogenated iron complex having general formula (I): in which: R.sub.1 and R.sub.2, identical or different, represent a hydrogen atom; or they are selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.3 represents a hydrogen atom, or it is selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15 alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine, preferably chlorine; or they are selected from. linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, —OCOR.sub.4 groups or —OR.sub.4 groups in which R.sub.4 is selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups; n is 2 or 3. Said oxo-nitrogenated iron complex having general formula (I) can be advantageously used in a catalytic system for the (co)polymerization of conjugated dienes. ##STR00001##