KB PUR IN® 1 is a 2 component water activated PU-Injection Foam

DESCRIPTION
The KB-PUR® IN 1 is a water activated hydrophobic MDI based polyurethane isocyanate foam. The system only reacts if it has contact with water. It then expands to a stiff, waterproof polyurethane foam.
KB-PUR® IN 1 is free of solvents and fillers; it is resistant to hydrolysis and is suitable for use in drinking water areas (KTW-Test).
KB-PUR IN 1 consists of a resin and a special catalyst that is supplied separately to allow on-site adjustments of gel-time and to provide a long shelf life. KB-PUR® IN 1 reacts and expands within the crack and thus replaces the water with a stiff closed cell PU foam.

DESCRIPTION
The KB-PUR® IN 2 is a solvent and filler free, low viscosity, 2 component,elastic polyurethane-injection resin for sealing of live (moving) cracks.
The KB-PUR® IN 2 is permanently elastic and is designed to withstand continuous contraction and expansion and is thus ideal for repair of moving cracks. By sealing the crack with a flexible resin, the crack is converted into an equivalent of an expansion joint and movement can thus continue without leakage or damage to the structure.
KB-PUR® IN 2 is suitable for use with potable (drinking) water applications.

FIELD OF APPLICATION
Used for stopping pressurised water in cracks and joints temporarily. KB-PUR®IN 1 is always used in conjunction with a solid resin KB-PUR® system such as KB-PUR®IN 2. It is designed as a tool to help placing solid resin systems in a crack when high water pressure does not allow such.

APPLICATION
Adapt material temperature to room temperature- or surrounding temperature. The KB-PUR® IN 1 is extremely sensitive to moisture. Apply it immediately, or it will react and cure after app. 2 - 3 hours. The substrate has to be dry to damp and free of loose particles, dust, oil, grease, form oil and other contaminants that might affect the bonding adversely. Before application can commence, grout ports (screw type preferred) should be placed. Mark pattern for drilling holes; holes should be staggered on each side of the crack, they should be angled 450 towards the wall and drilled so that they intercept the crack in the middle. Remove drilling dust from holes, tap a grout port into each hole and tighten sufficiently.
Large crack openings or voids can be sealed using KB-Fix or similar quick set mortars. To ensure a good reaction and that the
packers are placed correctly, we recommend injecting generous amounts of water beforehand ? remember to clean the equipment before pouring the resin to avoid premature reactions.

APPLICATION
Add the KB-PUR® IN 1 CAT to the KB-PUR® IN 1 resin and mix thoroughly with a slow speed mixer until a homogeneous mixture is obtained (avoid mixing humid air into the resin). Inject the material with conventional single component pumps with high or low pressure. Always start at the bottom and continue upwards, if in doubt, go back and inject the same packer once again. Water will be replaced by the rigid closed cell foam and can no longer pass through the crack.
KB-PUR® IN 1 should always be followed with an injection of one KB-PUR® IN 2 solid resins. The waiting time between should ideally be between 10 and 15 minutes so that the foam cells still are weak enough to allow a good penetration of the solid resin and thus ensures a better end result. Please refer to our Injection guide for further details.

CONSUMPTION
App. 0.1 kg/l void

CLEANING OF TOOLS
Immediately after use with KB-PUR®Cleaner 2 or ethylene acetate, Xylol, acetone, Toluol, MEK or other suitable water free
solvents.

PACKAGING
27.5 kg combi-set
5.5 kg combi-set

STORAGE
In a dry cool place. Once opened containers should be purged with nitrogen and resealed to prevent moisture reactions in the
containers.

SHELF LIFE
6 months in original unopened containers

SAFETY PRECAUTIONS
Wear protective gloves and goggles.

PREPARATION OF SUBSTRATE
The substrate has to be dry to damp and free of loose particles, dust, oil, grease, form oil and other contaminants that might affect the bonding adversely. Before application can commence, injection packers should be placed. Mark pattern for drilling holes, holes should be staggered on each side of the crack, they should be angled 450 towards the wall and drilled so that they intercept the crack in the middle. Remove drilling dust from holes, tap an injection packer into each hole and tighten sufficiently. Large crack openings or voids can be sealed using KB-Fix or similar quick set mortars.

APPLICATION
Mix both components thoroughly with a slow speed mixer until a homogeneous mixture is obtained. Fill the mixture into another container and mix again. Inject the material with conventional injection devices with high or low pressure. Always start at the bottom and continue upwards, if in doubt, go back and inject the same packer once again. Water bearing cracks should be treated beforehand using Köster KB-PUR® IN 1, please refer to relevant data sheets or our Injection Manual. Horizontal cracks in concrete (>1 mm crack width) can be sealed simply by pouring the material
into it. Please note that KB-PUR® IN 2 is water reactive and will foam until a certain degree, if exposed to water and high humidity

CONSUMPTION
1.1 kg/l void

CLEANING OF TOOLS
Immediately after use with KB-PUR® Cleaner 2, ethylene acetate, MEK, dichlor ethane, tri chlor ethylene or similar water free solvent.

PACKAGING
40 kg, 8 kg and 1 kg combi set.

STORAGE
Store the in originally sealed packages at temperatures ranging from 10°C /50° F to 30°C /86°F.

SHELF LIFE
12 months in unopened containers

SAFETY PRECAUTIONS
Wear protective gloves and goggles.