Patent US4630963A successfully refreshed from Google Patents.
US4630963A
Expired / Lapsed
US
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Polymer concrete by percolation
Assignee: Individual
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Filing: 1984-09-05
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Granted: 1986-12-23
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Expires: 2004-09-05
Abstract
Abstract A composition and method for use in the repair of a roadway are described. A lower molecular weight hydroxyl terminated polyether polyol is reacted with an organic polyisocyanate in the presence of solvents having a specific gravity in excess of 1, and catalyzed by organic mercury and organic lead catalysts in amounts sufficient to cause the composition to gel in about thirty seconds. The reaction products are pumped or poured over an aggregate and allowed to percolate therethrough to form a flush roadway repair.
Inventors
- 👤 Ransome J. Wyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:03
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0847; C08G18/0852; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/16; C08G18/16; C08G18/22; C08G18/222; C08G18/26; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/3278; C08G18/3284; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6688; E; E01; E01C; E01C11/00; E01C11/005; C04B2111/00; C04B2111/00474; C04B2111/0075
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
115 words
A method for the repair of a roadway having a cavity therein, comprising: filling the cavity with an aggregate; forming a solution comprising from about 0 to 8% of an OH terminated polyether polyol having a molecular weight of less than 2,000, from about 23 to 35% of an organic polyisocyanate from about 38 to 58% of a solvent having a specific gravity of greater than 1, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% to an organic mercury catalyst and from about 0 to 1% of an organic lead catalyst; and dispersing the solution through the aggregate and allowing the solution to percolate therethrough to fill the cavity.
Claim 2
Independent Claim
115 words
A method for the repair of a roadway having a cavity therein, comprising: filling the cavity with an aggregate; forming a solution comprising from about 0 to 8% of an OH terminated polyether polyol having a molecular weight of less than 2,000, from about 23 to 35% of an organic polyisocyanate from about 38 to 58% of a solvent having a specific gravity of greater than 1, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% to an organic mercury catalyst and from about 0 to 1% of an organic lead catalyst; and dispersing the solution through the aggregate and allowing the solution to percolate therethrough to fill the cavity.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the diaminotetrahydroxyl polyol is N,N,N',N'-tetrakis(2-hydroxypropyl)ethylene diamine.
Claim 4
Dependent Claim
29 words
The method of claim 1 or 2 wherein the organic lead catalyst is included in an amount sufficient to cause the solution to gel within less than thirty seconds.
Claim 5
Dependent Claim
10 words
The method of claim 3 wherein the solvent is perchloroethylene.
Claim 6
Independent Claim
118 words
A method for filling an aggregate matrix with solid material, comprising forming a solution having a specific gravity of from about 1.25 to 1.6 and an initial viscosity of less than 150 cps, and including: from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 38 to 58% of a solvent, from about 23 to 35% of an organic polyisocyanate, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 0.15 to 0.3% of an organic mercury catalyst, and from about 0 to 1% of an organic lead catalyst; dispersing the solution into the aggregate matrix, and allowing the solution to polymerize to form the solid material.
Claim 7
Independent Claim
118 words
A method for filling an aggregate matrix with solid material, comprising forming a solution having a specific gravity of from about 1.25 to 1.6 and an initial viscosity of less than 150 cps, and including: from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 38 to 58% of a solvent, from about 23 to 35% of an organic polyisocyanate, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 0.15 to 0.3% of an organic mercury catalyst, and from about 0 to 1% of an organic lead catalyst; dispersing the solution into the aggregate matrix, and allowing the solution to polymerize to form the solid material.
Claim 8
Dependent Claim
12 words
The method of claim 5 wherein the diaminotetrahydroxyl polyol is N,N,N',N'-tetrakis(2-hydroxylpropyl)ethylene diamine.
Claim 9
Dependent Claim
12 words
The method of claim 5 or 6 wherein the solvent is perchloroethylene.
Claim 10
Dependent Claim
19 words
The method of claim 7 wherein the solution polymerizes in less than 30 seconds after the solution is formed.
Claim 11
Independent Claim
149 words
A method for the formation of a polyurethane concrete, comprising: providing a first solution and a second solution, including, in toto, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 38 to 58% of a solvent having a specific gravity of less than 2,000, from about 23 to 35% of an organic polyisocyanate, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% of an organic mercury catalyst, and from about 0 to 1% of an organic lead catalyst, with the organic lead catalyst, organic mercury catalyst and the diaminotetrahydroxyl polyol being present only in the first solution and the organic polyisocyanate being present only in the second solution; mixing the first and second solutions to form a third solution; and dispersing the third solution through an aggregate matrix to form the polyurethane concrete.
Claim 12
Independent Claim
149 words
A method for the formation of a polyurethane concrete, comprising: providing a first solution and a second solution, including, in toto, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 38 to 58% of a solvent having a specific gravity of less than 2,000, from about 23 to 35% of an organic polyisocyanate, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% of an organic mercury catalyst, and from about 0 to 1% of an organic lead catalyst, with the organic lead catalyst, organic mercury catalyst and the diaminotetrahydroxyl polyol being present only in the first solution and the organic polyisocyanate being present only in the second solution; mixing the first and second solutions to form a third solution; and dispersing the third solution through an aggregate matrix to form the polyurethane concrete.
Claim 13
Dependent Claim
35 words
The method of claim 9 wherein the first and second solutions have a combined specific gravity of from about 1.25 to 1.6 and an average viscosity, prior to mixing, of less than about 150 cps.
Claim 14
Dependent Claim
29 words
The method of claim 9 or 10 wherein the organic lead catalyst is included in an amount sufficient to cause the solution to gel within less than 30 seconds.
Claim 15
Dependent Claim
10 words
The method of claim 11 wherein the solvent is perchloroethylene.
Claim 16
Independent Claim
123 words
A method for the formation of a polyurethane concrete, comprising: providing an aggregate matrix; forming a solution having an initial viscosity of less than about 150 centipoise, and comprising, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 23 to 35% of an organic polyisocyanate, from about 38 to 58% of a solvent having a specific gravity of greater than 1, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% of an organic mercury catalyst and from about 0 to 1% of an organic lead catalyst; and dispersing the solution through the aggregate and allowing the solution to percolate therethrough and solidify, to form the polyurethane concrete.
Claim 17
Independent Claim
123 words
A method for the formation of a polyurethane concrete, comprising: providing an aggregate matrix; forming a solution having an initial viscosity of less than about 150 centipoise, and comprising, from about 0 to 8% of an OH-terminated polyether polyol having a molecular weight of less than 2,000, from about 23 to 35% of an organic polyisocyanate, from about 38 to 58% of a solvent having a specific gravity of greater than 1, from about 8 to 16% of a diaminotetrahydroxyl polyol, from about 0.15 to 0.3% of an organic mercury catalyst and from about 0 to 1% of an organic lead catalyst; and dispersing the solution through the aggregate and allowing the solution to percolate therethrough and solidify, to form the polyurethane concrete.
Claim 18
Dependent Claim
27 words
The method of claim 13 wherein the organic lead catalyst is included in an amount sufficient to cause the solution to solidify within less than thirty seconds.
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| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
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