Compositions comprising at least one isocyanate-functional organosilane, preferably in combination with at least one polyisocyanate, and, optimally, at least one aromatic nitroso compound having been found to be unexpectedly effective as storage-stable, single-package, one-coat adhesive systems for bonding a variety of elastomeric materials to themselves and other solid substrates, such as metal, fabric, ceramic, and the like substrates. The use of aromatic nitroso compounds is necessary with certain isocyanatosilanes and optional with others, but, in all cases, affords improved performance, especially with respect to environmental resistance.

To provide a primer composition having an excellent balance between storage stability and adhesiveness, while permitting a longer open time. The primer composition includes: a compound (a) represented by the following formula (1): ##STR1## and an organic solvent (b).

Disclosed is an ungelled resin comprising a compound corresponding to a specified formula (I) which compound typically is prepared by reaction of an aminoalkyloxy silane with an organic isocyanate. The ungelled resin contains a hydrolyzable group that is attached directly to Silicon. The ungelled resin can be utilized in coating compositions. The ungelled resin can be cured with moisture and/or with polyols, and can be used to provide protective and/or decorative films on a variety of substrates. The novel compounds contained in the ungelled resin for convenience can be thought of as prepared from an organic isocyanate having an average functionality of at least 1; a silicon-containing compound corresponding to a specified formula (III) infra, the silicon-containing compound having at least one hydrolyzable group; and a compound containing at least 2 carbon atoms, at least 1 functional group reactive with a moiety on the silicon-containing compound and at least one amino group. A compound of the resin contains at least one hydrolyzable group from the silicon-containing compound. A compound of the resin also contains a residue of the silicon-containing compound bonded to a residue of the compound containing at least 2 carbon atoms through an oxygen-silicon linkage.

Disclosed is a composition containing a novel ungelled resin in combination with an effective amount of a cure-promoting catalyst selected from the group consisting of triflic acid (i.e., trifluoromethane sulfonic acid), a neutralization product of triflic acid with ammonia, a neutralization product of triflic acid with an amine, a tetraalkyl ammonium salt of triflic acid, and mixtures of one or more of the aforesaid catalysts. The composition can be cured with moisture and/or with polyols and can be used to provide protective and/or decorative films on a variety of substrates. The novel ungelled resin comprises a compound corresponding to a specified formula (I) which compound typically is prepared by reaction of an aminoalkyloxy silane with an organic isocyanate. The ungelled resin contains a hydrolyzable group that is attached directly to silicon.

Ultraviolet curable polymerizable systems having a built-in secondary curing mechanism are disclosed. The polymerizable coating system is a one component system comprising at least one alkoxysilyl-urethaneacrylate or methacrylate, an acrylate or methacrylate or vinyl ether diluent. The coating systems may include a polymerization initiator of the cationic or free radical photoinitiator type, and a metal catalyst. The coating system is UV curable, and also possesses an additional cure mechanism.