Acrylamidoacylated oligomers

An oligomer which is the reaction product of a polycaprolactonediol oligomer and 2-ethenyl-4,4-dimethyl-1,3-oxazolin-5-one, said oligomer having the formula

• A.sub.p (HX).sub.n-p R
• wherein
• A is ##STR11## R is an organic group having a valence of 2 and is the residue of a polycaprolactonediol oligomer,
• n is equal to 2, and
• p is equal to 2.

An acrylamido- or methacrylamido-acyl oligomer having the general formula:

• A.sub.p (HX).sub.n-p R
• wherein
• R is an organic group having a valence of n and is the residue of a nucleophilic group-substituted oligomer, (HX).sub.n R, said oligomer being an organic polyester oligomer having one or more hydroxyl, amino, or thiol groups and having a molecular weight of 200 to 20,000;
• n is a positive number of at least one and represents the valence of R;
• p is a positive number between 1 and n;
• A is an acrylamido-acyl group or a methacrylamido-acyl group having the formula ##STR12## wherein R.sup.1 is hydrogen, chlorine, or a methyl group;
• R.sup.2 is a single bond or a methylene or ethylene group that can be substituted by an alkyl group haivng 1 to 6 carbon atoms or phenyl;
• R.sup.3 or R.sup.4 are independently hydrogen, an alkyl or cycloalkyl group having 1 to 12 carbon atoms, phenyl or alkyl-substituted phenyl having 6 to 12 carbon atoms, or R.sup.3 and R.sup.4 taken together with the carbon atom to which they are attached form a 5- to 12-membered carbocyclic ring;
• and
• X is ##STR13## in which R.sup.5 is (a) hydrogen, (b) a group selected from an alkyl or cycloalkyl group having 1 to 12 carbon atoms optionally substituted by a cyano, hydroxyl, or an alkoxy group having 1 to 4 carbon atoms, or A;
• with the proviso that when R.sup.5 is an alkyl or cycloalkyl group, then at least one of R.sup.3 and R.sup.4 is hydrogen.

An acrylamido- or methacrylamido-acyl oligomer having the general formula:

• A.sub.p (HX).sub.n-p R
• wherein
• R is an organic group having a valence of n and is the residue of a nucleophilic group-substituted oligomer, (HX).sub.n R, said oligomer being a polysiloxane oligomer having one or more hydroxyl, amino, or thiol groups and having a molecular weight of 200 to 20,000;
• n is a positive number of at least one and represents the valence of R;
• p is a positive number between 1 and n;
• A is an acrylamido-acyl group or a methylacrylamido-acyl group having the formula ##STR14## wherein R.sup.1 is hydrogen, chlorine, or a methyl group;
• R.sup.2 is a single bond or a methylene or ethylene group that can be substituted by an alkyl group having 1 to 6 carbon atoms or phenyl;
• R.sup.3 and R.sup.4 are independently hydrogen, an alkyl or cycloalkyl group having 1 to 12 carbon atoms, phenyl or alkyl-substituted phenyl having 6 to 12 carbon atoms, or R.sup.3 and R.sup.4 taken together with the carbon atom to which they are attached form a 5- to 12-membered carbocyclic ring;
• and
• X is ##STR15## in which R.sup.5 is (a) hydrogen, (b) a group selected from an alkyl or cycloalkyl group having 1 to 12 carbon atoms optionally substituted by a cyano, hydroxyl, or an alkoxy group having 1 to 4 carbon atoms, or A;
• wherein the proviso that when R.sup.5 is an alkyl or cycloalkyl group, then at least one of R.sup.3 and R.sup.4 is hydrogen.