Curing Agent CH

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

CASE Ingredients Features: Chemical Resistance,
Excellent Adhesion,
Improves Adhesion

Applications & Uses

Markets: Adhesives & Sealants,
Paints & Coatings,
Printing & Packaging
Applications: Adhesives & Sealants — Other Adhesives & Sealants Applications
Paints & Coatings — Other Paints & Coatings Applications
Printing & Packaging — Packaging Coatings
Primers & Lacquers
Paints & Coatings — Packaging Coatings
Primers & Lacquers
Compatible Polymers & Resins: Natural Rubbers (NR),
Polyesters,
Polyethers,
Polyols,
Polyurethanes (PU)
Compatible Substrates & Surfaces: Elastomers & Rubbers
Cure Method: Other Cure Method
Coating Type: Primer
Applications: It cross-links polymers/elastomers used as coatings, adhesives, primers, paints, etc, increasing strength, cohesion, adhesion to substrates and chemical/physical resistance.

Properties

	Value	Units	Test Method / Conditions
Brookfield Viscosity 25°C	150 - 2701	mPa.s	-
NCO Content	30 - 32	%	-

Packaging & Availability

Packaging Type: Drums
Packaging and Storing: Packaging
250 kg metallic drums, 1.250 kg (1000 liters) plastic tank.
Storing
Polyisocyanates react with water, including atmospheric moisture, forming carbon dioxide, which can cause excessive pressure in closed containers and form solid insoluble polyureas, which can block pipes, valves, etc. CURING AGENT CH must be stored in well sealed original containers, at temperatures between 0°C and 30°C. At higher temperatures, it can develop hazardous vapors. Opened drums must be protected from moisture penetration (use silica gel drying tube or nitrogen atmosphere systems). In original drums, shelf-life is at least 6 months, with a slight increase of viscosity in time.

Storage & Handling

Shelf Life: 6 Months
Handling: In solvent borne primers, add 3-9% of CURING AGENT CH referred to total solids.
In natural rubber (such as our TACKSOL series) or acrylic solvent borne adhesives, add 1-3% of CURING AGENT CH on the total solids of the adhesive.

Preferably pre-dilute CURING AGENT CH in solvents such as toluene or ethylacetate. Verify the compatibility of the solvent of the dilution with the product to crosslink. Add CURING AGENT CH to polymer/solution and properly stir to complete dissolution. Reaction starts immediately, so we recommend using the product immediately after the activation. The crosslinking mechanism depends on different parameters, such as adhesive concentration, amount of crosslinker, temperature. We suggest to check the curing conditions in advance, in order to avoid spoiling material.