Compositions and methods for priming and sealing dental and biological substrates

A primer for sealing or priming for bonding a dental or a biological substrate, the primer comprising a product of a mixture including:

• a polymerization initiator;
• a natural resin selected from the group consisting of rosins, distillates, saps, oils, balsams, gums, isolated constituents of natural resins, modifications of the foregoing, synthetic replications of the foregoing, and mixtures of the foregoing:
• and
• a polymerizable promoter characterized as being capable of being polymerized in situ by initiation of the polymerization initiator after the primer is placed in contact with the substrate, the polymerizable promoter comprising at least one polymerizable prepolymer having at least one ethylenically unsaturated group and at least one carboxylic acid group.

A primer for sealing or priming for bonding a dental or a biological substrate, the primer comprising a product of a mixture including:

• a polymerization initiator;
• a natural resin selected from the group consisting of rosins, distillates, saps, oils, balsams, gums, isolated constituents of natural resins, modifications of the foregoing, synthetic replications of the foregoing, and mixtures of the foregoing;
• and
• a polymerizable resin.

A kit for priming for bonding or sealing a dental or biological substrate with a stable premixed primer comprising:

• (a) a substrate conditioner;
• and
• (b) a stable premixed primer comprising a product of a mixture including a polymerization initiator and a polymerizable promoter, wherein the polymerizable promoter is characterized as being capable of being polymerized in situ by initiation of the polymerization initiator after the primer is applied to the substrate, wherein the polymerizable initiator and the polymerizable promoter once mixed thereafter form a stable premixed primer ready for storage and subsequent application directly to the substrate without additional mixing, wherein the polymerizable promoter has a formula selected from the group consisting of ##STR5## wherein R is selected from the group consisting of a hydrogen radical, a methyl group, a saturated aliphatic radical, an unsaturated aliphatic radical, a halogen radical, and a CN radical:
• and
• wherein R.sub.1 is selected from the group consisting of an oxygen radical, a saturated aliphatic radical, a saturated aliphatic radical interrupted by at least one oxygen radical, an unsaturated aliphatic radical, an unsaturated aliphatic radical interrupted by at least one oxygen radical, a homocyclic radical, a heterocyclic radical, a polymerizable moiety, and an aryl radical having four to six carbon atoms and a valency of n+1 with n being an integeter of at least 6.