A dual-curable sealant composition includes a polysulfide having an SH group, a metal oxide catalyst, and an alkylborane amine catalyst. A cured sealant is also formed from the dual-curable sealant composition. Moreover, a dual-cured sealant is formed that includes the polymerization product of the polysulfide reacted in the presence of the metal oxide catalyst and the alkylborane amine catalyst. Further, a dual-curable sealant system includes a first component including the polysulfide and the alkylborane amine catalyst and a second component including the metal oxide catalyst. An article is formed that includes a substrate and the cured sealant disposed on the substrate. Even further, a method of forming the dual-curable sealant composition includes the steps of providing the polysulfide, the alkylborane amine catalyst, and the metal oxide catalyst, and combining the polysulfide, the alkylborane amine catalyst, and the metal oxide catalyst to form the dual-curable composition.

The present invention relates to thermoplastic polyurethanes obtainable or obtained by reaction of at least one aliphatic polyisocyanate; at least one chain extender; and at least one polyol composition, where the polyol composition comprises a polyol selected from the group consisting of polyetherols and at least one bisphenol derivative selected from the group consisting of bisphenol A derivatives with a molecular weight Mw>315 g/mol and bisphenol S derivatives with a molecular weight Mw>315 g/mol, where at least one of the OH groups of the bisphenol derivative is alkoxylated, and to processes for producing such thermoplastic polyurethanes and to the use of a thermoplastic polyurethane according to the invention for producing extrusion products, films and moldings.

Provided are dual cure monomer are of the formula: (I) wherein R* is a (hetero)hydrocarbyl group; X.sup.1 is O, S, NR.sup.3, NR.sup.3CONR.sup.3, CONR.sup.3 or NR.sup.3CO, where R.sup.3 is H, C.sub.1-C.sub.4 alkyl or R.sup.1-Epoxy; R.sup.1 is a divalent (hetero)hydrocarbyl group; X.sup.2 is O, S, NR.sup.4, NR.sup.4CONR.sup.4, CONR.sup.4, NR.sup.4CO where R.sup.4 is H, C.sub.1-C.sub.4 alkyl or R.sup.2CHCH.sub.2; R.sup.2 is a divalent (hetero)hydrocarbyl group; subscripts a and b are at least one, subscripts c and d are at least one, with the proviso that the monomer has at least two epoxy groups and at least two ene groups.

##STR00001##

Disclosed is a triazine ring-containing polymer including a repeating unit represented by Formula (1) and has a number average molecular weight of greater than about 20000 g/mol and less than or equal to about 50000 g/mol:

##STR00001## wherein, in Formula (1), R.sup.1 is each independently a C1 to C5 alkyl group and R.sup.2 is each independently a divalent group having at least one aromatic hydrocarbon group.

Disclosed is a triazine ring-containing polymer including a repeating unit represented by Formula (1) and has a number average molecular weight of greater than about 20000 g/mol and less than or equal to about 50000 g/mol:

##STR00001## wherein, in Formula (1), R.sup.1 is each independently a C1 to C5 alkyl group and R.sup.2 is each independently a divalent group having at least one aromatic hydrocarbon group.

An organic-inorganic hybrid composition including a polymer having a triazine ring structure in a main chain of the polymer (A);

an inorganic particulate (B); and a surface-treating agent having a triazine ring structure represented by Formula (1)(C):

##STR00001## wherein, in Formula (1), R.sub.1 is a carboxyl group, a phosphoric acid group, a sulfo group, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted amino group, wherein a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm.

An organic-inorganic hybrid composition including a polymer having a triazine ring structure in a main chain of the polymer (A);

an inorganic particulate (B); and a surface-treating agent having a triazine ring structure represented by Formula (1)(C):

##STR00001## wherein, in Formula (1), R.sub.1 is a carboxyl group, a phosphoric acid group, a sulfo group, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted amino group, wherein a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm.

Polythioether polymers, sealants containing polythioether polymers, and compounds useful as stabilizing monomers in the manufacture of polythioether polymers are provided. In many embodiments the polymers and sealants demonstrate reduced risk of spoilage that may be caused by low temperature storage of the polymer or uncured sealant. Compounds useful as stabilizing monomers include compounds according to formula I:
CH.sub.2CR.sup.1CHR.sup.2SR.sup.3SCHR.sup.4CR.sup.5CH.sub.2[I]
wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are independently selected from H, CH.sub.3 or C.sub.2H.sub.5, and
wherein R.sup.3 is selected from divalent groups comprising 2-12 carbon atoms, 0-5 ether oxygen atoms and 0-5 thioether sulfur atoms, which may be straight, branched or cyclic.

Polythioether polymers, sealants containing polythioether polymers, and compounds useful as stabilizing monomers in the manufacture of polythioether polymers are provided. In many embodiments the polymers and sealants demonstrate reduced risk of spoilage that may be caused by low temperature storage of the polymer or uncured sealant. Compounds useful as stabilizing monomers include compounds according to formula I:
CH.sub.2CR.sup.1CHR.sup.2SR.sup.3SCHR.sup.4CR.sup.5CH.sub.2[I]
wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are independently selected from H, CH.sub.3 or C.sub.2H.sub.5, and
wherein R.sup.3 is selected from divalent groups comprising 2-12 carbon atoms, 0-5 ether oxygen atoms and 0-5 thioether sulfur atoms, which may be straight, branched or cyclic.

A method of making a polymer network. The method includes providing a composition including a polythiol having more than one thiol group and a polyepoxide having more than one epoxide group, applying a solution including a photolatent base catalyst to a surface of the composition, and subsequently exposing the composition to light. Upon exposure to light, the photolatent base catalyst photochemically generates a first amine and at least partially cures at least the surface of the composition to form the polymer network.