CHT Group QM Cat SR2 Condensation Cure, Styrene Resistant Moldmaking Catalyst

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CHT Group QM Cat SR2 Condensation Cure, Styrene Resistant Moldmaking Catalyst
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QM Cat SR2 is the standard catalyst for the QM 100 series when casting polyester resins. This is a two-component, room temperature, condensation cure system. The cured rubber has excellent mechanical properties and good shelf-life stability. This is the styrene resistant version of the standard catalysts and is available as QM Cat Blue SR2, QM Cat Purple SR2 and QM Cat Red 3 SR2. Key Features: Good work life Fast demold time Excellent physical properties Excellent styrene resistance Main Applications: Molds for polyester resin castings Molds where styrene resistance is required Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Original Value	Comments

Specific Gravity	1.00 g/cc	Uncatalyzed, QM Cat Blue SR2
	1.00 g/cc	Uncatalyzed, QM Cat Purple SR2
	1.00 g/cc	Uncatalyzed, QM Cat Red 3 SR2
Viscosity	100 cP	Uncatalyzed, QM Cat Blue SR2
	100 cP	Uncatalyzed, QM Cat Purple SR2
	100 cP	Uncatalyzed, QM Cat Red 3 SR2

Processing Properties	Original Value	Comments
Cure Time	4.00 - 6.00 hour	Demold time, Catalyzed, QM Cat Red 3 SR2
	12.0 - 16.0 hour	Demold time, Catalyzed, QM Cat Purple SR2
	16.0 - 24.0 hour	Demold time, Catalyzed, QM Cat Blue SR2
Tack-Free Time	0.750 - 1.00 hour	Catalyzed, QM Cat Red 3 SR2
	4.00 - 6.00 hour	Catalyzed, QM Cat Purple SR2
	6.00 - 8.00 hour	Catalyzed, QM Cat Blue SR2
Pot Life	15.0 min	Catalyzed, QM Cat Red 3 SR2
	45.0 min	Catalyzed, QM Cat Purple SR2
	60.0 min	Catalyzed, QM Cat Blue SR2

Descriptive Properties
Color	Blue	Uncatalyzed, QM Cat Blue SR2
	Light blue	Catalyzed, QM Cat Blue SR2
	Light purple	Catalyzed, QM Cat Purple SR2
	Light red	Catalyzed, QM Cat Red 3 SR2
	Purple	Uncatalyzed, QM Cat Purple SR2
	Red	Uncatalyzed, QM Cat Red 3 SR2

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PACC2068 / 199456

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