Rapid setting polyurethane elastomer compositions

Claim 2

The composition of claim 2 wherein component B is diethylene glycol.

Claim 3

The composition of claim 2 wherein component B is triethylene glycol.

Claim 4

The composition of claim 2 wherein component B is glycerine.

Claim 5

The composition of claim 2 wherein component B is propylene glycol.

Claim 6

The composition of claim 2 wherein component B is the reaction product of glycerine or pentaerythritol with an alkylene oxide.

Claim 7

The composition of claim 7 wherein component B is the reaction product of glycerine with propylene oxide and having a percent OH of from about 19.5 to about 20.5.

Claim 8

The composition of claim 7 wherein component B is the reaction product of pentaerythritol with propylene oxide in a molar ratio of 1 to 5 respectively.

Claim 9

The composition of claim 2 wherein component A is a glycerine initiated polyoxypropylene glycol end capped with ethylene oxide having a percent OH of about 0.96 to about 1.10.

Claim 10

The composition of claim 2 wherein component C is the reaction product of dipropylene glycol with toluene-diisocyanate, said prepolymer having an NCO content of about 25.7 percent.

Claim 11

The composition of claim 2 wherein component C is the toluene diisocyanate adduct of the reaction product of glycerine and propylene oxide having a percent OH of from about 19.5 to about 20.5, said prepolymer having an NCO content of about 31.8 percent.

Claim 12

The composition of claim 2 wherein component D is a metal i.e., salt of a carboxylic acid having from about 2 to about 20 carbon atoms.

Claim 13

The composition of claim 13 wherein component D is an organo-lead compound.

Claim 14

The composition of claim 14 wherein component D is lead-octoate.

Claim 15

The composition of claim 13 wherein component D is an organo-tin compound.

Claim 16

The composition of claim 16 wherein component D is dibutyltindilaurate.

Claim 17

The articles resulting from casting the compositions of claim 1 in a suitable mold.

Claim 18

The articles resulting from casting the compositions of claim 2 in a suitable mold.

Claim 19

A composition which reacts in the presence of an organometallic catalyst to produce a rapid setting urethane elastomer composition and which comprises: A. a liquid polyether or ester-modified polyether polyol containing three to four hydroxyl groupS per molecule and a molecular weight of at least about 2,000, B. a liquid accelerator-extender compound selected from the group consisting of glycerine, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, and the reaction product of glycerine or pentaerythritol with an alkylene oxide or an epihalohydrin in a ratio that will provide from one to about two moles of alkylene oxide or epihalohydrin per hydroxyl group contained in the glycerine or pentaerythritol, C. a liquid isocyanate terminated prepolymer which is the reaction product of a stoichiometric excess of a polyisocyanate with a polyhydroxyl-containing compound having a hydroxyl functionality of from two to about three and a molecular weight of from about 62 to about 600, said prepolymer having an NCO content of at least about 10 percent and less than about 50 percent by weight, wherein components A and B are present in quantities which provide a hydroxyl equivalent ratio of B:A of at least about 1:1 and less than about 20:1; component C is present in a quantity so as to provide an NCO equivalent to OH equivalent contained in components A and B of from about 0.75:1 to about 1.5:1.

Claim 20

The composition of claim 20 wherein component A has a molecular weight of from about 3,000 to about 10,000, component C has an NCO content of from about 15 to about 35 percent by weight, the hydroxyl equivalent ratio of B:A is from about 5:1 to about 15:1 and wherein component C is present in quantities which provide from about 0.85 to about 1.20 NCO equivalents per hydroxyl equivalent contained in components A and B.