Reaction injection molded polyurethanes, polyureas and polyurea-urethanes employing thiapolycyclic polyisocyanates

Claim 2

A reaction injection molding composition comprising a polyahl, a normally liquid thiapolycyclic polyisocyanate and a urethane catalyst, a urea catalyst or a mixture of a urethane catalyst and a urea catalyst in proportions such that, upon subjecting the composition to conditions of a reaction injection molding process, a useful article is formed.

Claim 3

The composition of claim 1 wherein the polyahl is a polyol and the thiapolycyclic polyisocyanate is a normally liquid isomeric mixture of two or more thiabicyclic diisocyanates.

Claim 4

The composition of claim 1 wherein the thiapolycyclic polyisocyanate is represented by one of the following structural formulas: ##STR12## wherein A is a residue of an active hydrogen moiety such as --O--, --S--, --NR 3 --, ##STR13## or CO 2 --; ##STR14## is a thiapolycyclic moiety having at least 6 carbons and a sulfur-containing bridging group; x is 0, 1 or 2; Z is 0, 1, or 2, provided that each molecule of thiapolycyclic isocyanate has at least two isocyanate moieties; each R 1 is independently an alkyl group containing 1 to 3 carbon atoms; each R 2 is independently hydrogen or methyl provided that at least two R 2 are hydrogen; y is a number corresponding to available valences for the polycyclic ring; each R 3 is independently hydrogen, an aliphatic alkyl containing 1 to 20 carbon atoms or an inertly-substituted aliphatic alkyl containing 1 to 20 carbon atoms; and n is 0, 1, 2 or 3.

Claim 5

The composition of claim 1 wherein the thiapolycyclic polyisocyanate is represented by one of the structural formulas: ##STR15##

Claim 6

The composition of claim 2 wherein the thiapolycyclic polyisocyanate is a liquid mixture of dialkyl-9-thiabicyclononane diisocyanate isomers.

Claim 7

The composition of claim 1 wherein the polyahl is a polyalkylene ether polyol.

Claim 8

The composition of claim 1 wherein the polyahl is a polyamine.

Claim 9

The composition of claim 6 wherein (1) the ratio of polyisocyanate to the polyol is sufficient to provide from about 0.8:1 to about 1.5:1 of isocyanate equivalents to hydroxyl equivalents in the polyol and (2) a urethane catalyst is present in concentration from about 0.05 to about 5 parts per hundred parts of polyahl.

Claim 10

A process for making a reaction injection molded polyurethane, polyurea or polyurea/polyurethane which comprises subjecting in a one-shot procedure the composition of claim 1 to conditions sufficient to form a reaction injection molding.

Claim 11

A process for making a reaction injection molded polyurethane, polyurea or polyurea/polyurethane which comprises subjecting in a one-shot procedure the composition of claim 4 to conditions sufficient to form a reaction injection molding.

Claim 12

A process for making a reaction injection molded polyurethane which comprises subjecting in a one-shot procedure the composition of claim 8 to conditions sufficient to form a reaction injection molding.

Claim 13

A reaction injection molded article prepared from the composition of claim 1.

Claim 14

A reaction injection molded article prepared from the composition of claim 4.

Claim 15

A reaction injection molded article prepared from the composition of claim 8.