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US 6,572,927 B1Granted
Method for sealing porous building materials and building components
AssigneeGerd Pleyers
InventorsGerd Pleyers, Klaus Littmann
Life of this patent
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Abstract
A method for sealing porous building materials, using a polyurethane and/or epoxy resin based sealing composition. The composition can include a substance/substance mixture with a viscosity of less than 100 mPa·s at 12° C. which can be added to a porous building material. This substance/substance mixture can be based on an epoxy resin. This resin can chemically react once inside of a porous region of the building material to substantially fill the pore system.
Claims11
A method for sealing a porous building material comprising the steps of:
- feeding at least one low-viscosity reactive substance/substance mixture with a viscosity of less than 100 mPa·s at 12° C. to the porous building material, whereby the substances/substance mixtures are based on epoxy resins consisting of solvent-free aliphatic, multifunctional reactive thinners and aminic aliphatic hardeners and/or polyurethane polymers with isocyanate contents of between 2 and 30 wt %;
- permitting said substance/substance mixture to penetrate the pore system of the porous building material in a desired zone of influence;
- and
- chemically reacting said substance/substance mixture which substantially fills the pore system, and thereby forms a liquid-impermeable barrier in the pore system.
1 more element
A sealing composition consisting of:
- a low-viscosity substance/substance mixture with a viscosity of less than 100 mPa·s at 12° C., whereby said substance/substance mixture based on epoxide resins consisting of solvent-free aliphatic, multifunctional reactive thinners and aminic aliphatic hardeners and/or polyurethane prepolymers with isocyanate contents of between 2 and 30 wt %, said composition, upon installation in porous building materials forming pore-filling masses by chemical reaction, curing, and swelling upon curing by means of the liquid present.
A sealing composition consisting of:
- a low-viscosity substance/substance mixture with a viscosity of less than 100 mPa·s at 12° C., said composition, upon installation in porous building materials forming pore-filling foams by chemical reaction, curing, and swelling upon curing by means of the liquid present.
Dependencies are inferred from the claim text.