US4114382A — Process for the consolidation of geological forma…

Claim 1

Independent Claim 145 words

A process for consolidating geological formations comprising applying an at least two-component reactive polyisocyanate/polyol mixture to the material to be consolidated wherein said reactive polyisocyanate/polyol mixture comprises: (a) a polyisocyanate, and (b) a polyol mixture comprising (i) about 5-50% by weight of a polyether polyol having an OH number under 100 produced by the reaction between a compound having more than one reactive hydrogen atom per molecule and a molar excess of 1,2-alkylene oxide, and (ii) about 95-50% by weight of a polyol selected from the group consisting of a polyhydroxyalkane having 2 to 4 hydroxy groups with a molecular weight of about 62 to 200 and a polyether polyol having an OH number of about 200 to 1056 with a molecular weight of about 106 to 1,000, and wherein said reactive polyisocyanate/polyol mixture undergoes an isocyanate polyaddition reaction in the material to be consolidated.

Claim 2

Dependent Claim 145 words

A process for consolidating geological formations comprising applying an at least two-component reactive polyisocyanate/polyol mixture to the material to be consolidated wherein said reactive polyisocyanate/polyol mixture comprises: (a) a polyisocyanate, and (b) a polyol mixture comprising (i) about 5-50% by weight of a polyether polyol having an OH number under 100 produced by the reaction between a compound having more than one reactive hydrogen atom per molecule and a molar excess of 1,2-alkylene oxide, and (ii) about 95-50% by weight of a polyol selected from the group consisting of a polyhydroxyalkane having 2 to 4 hydroxy groups with a molecular weight of about 62 to 200 and a polyether polyol having an OH number of about 200 to 1056 with a molecular weight of about 106 to 1,000, and wherein said reactive polyisocyanate/polyol mixture undergoes an isocyanate polyaddition reaction in the material to be consolidated.

Claim 3

Dependent Claim 22 words

A process as claimed in claim 1, wherein the compound comprising more than one reactive hydrogen atom per molecule is an amine.

Claim 4

Dependent Claim 24 words

A process as claimed in claim 2 wherein the polyether is produced from the reaction of ethylene diamine and/or excess triethanolamine with 1,2-alkylene oxide.

Claim 5

Dependent Claim 17 words

A process as claimed in claim 3 wherein the 1,2-alkylene oxide is propylene oxide and/or ethylene oxide.

Claim 6

Dependent Claim 30 words

A double chamber cartridge consisting of two chambers containing respectively a polyisocyanate and a polyol, wherein the polyether as set forth in claim 1 is added to the polyol component.

Claim 7

Dependent Claim 58 words

The process of claim 1 wherein the polyol comprises (a) about 50 to 95 wt.% of polyethers having molecular weights of about 400 to 600 and OH numbers of about 350 to 400 and (b) about 50 to 5 wt.% of polyethers having molecular weights of about 2000 to 3500 and OH numbers of about 50 to 90.

Claim 8

Dependent Claim 17 words

The process of claim 6 wherein the reactive mixture is injected into the material to be consolidated.

Claim 9

Dependent Claim 15 words

The process of claim 7 wherein the reaction components are supplied from separate pressurized containers.

Claim 10

Dependent Claim 34 words

The process of claim 7 wherein the injection is effected by a machine operating at pressures up to about 90 bar and having a two component pump which draws each of the components separately.

Claim 11

Dependent Claim 28 words

The process of claim 6 wherein the compound reacted with the 1,2-alkylene oxides to produce the polyethers with OH numbers between about 50 and 90 is an amine.

Claim 12

Dependent Claim 13 words

The process of claim 10 wherein the amine is ethylene diamine or triethanolamine.

Claim 13

Dependent Claim 13 words

The process of claim 1 wherein the reactive mixture contains a blowing agent.

Claim 14

Dependent Claim 53 words

The process of claim 12 wherein the mixture is applied by inserting a two compartment cartridge which maintains the polyol and polyisocyanate components in separate compartments into a hole in the material to be consolidated, fracturing the cartridge in such a way to insure good mixing of the components and sealing the hole.

Claim 15

Dependent Claim 35 words

The process of claim 1 wherein the mixture is applied by pouring the components before they harden into a downwardly sloping drill hole in the material to be consolidated and then sealing the drill hole.

Claim 16

Dependent Claim 12 words

The process of claim 1 wherein the polyisocyanate is a monomeric polyisocyanate.

Claim 17

Dependent Claim 19 words

The process of claim 15 wherein the monomeric polyisocyanate component is obtained by phosgenation of a formaldehyde-aniline condensation product.

Claim 18

Dependent Claim 149 words

A process for consolidating geological formations encountered in coal mining comprising applying an at least two-component reactive polyisocyanate/polyol mixture to the material to be consolidated wherein the reactive polyisocyanate/polyol mixture comprises: (a) a polyisocyanate, and (b) a polyol mixture comprising (i) about 5-50% by weight of a polyether polyol having an OH number under 100 produced by the reaction between a compound having more than one reactive hydrogen atom per molecule and a molar excess of 1,2-alkylene oxide, and (ii) about 95-50% by weight of a polyol selected from the group consisting of a polyhydroxyalkane having 2 to 4 hydroxy groups with a molecular weight of about 62 to 200 and a polyether polyol having an OH number of about 200 to 1056 with a molecular weight of about 106 to 1,000, and wherein said reactive polyisocyanate/polyol mixture undergoes an isocyanate polyaddition reaction in the material to be consolidated.

Claim 19

Dependent Claim 149 words

A process for consolidating geological formations encountered in coal mining comprising applying an at least two-component reactive polyisocyanate/polyol mixture to the material to be consolidated wherein the reactive polyisocyanate/polyol mixture comprises: (a) a polyisocyanate, and (b) a polyol mixture comprising (i) about 5-50% by weight of a polyether polyol having an OH number under 100 produced by the reaction between a compound having more than one reactive hydrogen atom per molecule and a molar excess of 1,2-alkylene oxide, and (ii) about 95-50% by weight of a polyol selected from the group consisting of a polyhydroxyalkane having 2 to 4 hydroxy groups with a molecular weight of about 62 to 200 and a polyether polyol having an OH number of about 200 to 1056 with a molecular weight of about 106 to 1,000, and wherein said reactive polyisocyanate/polyol mixture undergoes an isocyanate polyaddition reaction in the material to be consolidated.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1981-09-18	1982-03-20	1982-09-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1985-09-18	1986-03-20	1986-09-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1989-09-18	1990-03-20	1990-09-19	$7700.00	Window Closed / Lapsed

Process for the consolidation of geological formations and loosened rock and earth masses

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