Lanxess X_Butyl™ R 1551 PG Butyl Rubber

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Lanxess X_Butyl™ R 1551 PG Butyl Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	X_Butyl™ R 1551 PG is a new low unsaturation, high purity regular butyl elastomer grade with improved cure characteristics. In resin cure systems, compounds containing new X_Butyl™ R 1551 PG achieve comparable crosslink density more quickly than existing regular butyl grades with higher unsaturation. The reduced unsaturation results in improved aging characteristics in resin cure applications such as curing bladders and envelopes while still offering improved production throughput. Key Properties: In addition to the key properties of butyl rubber such as impermeability, X_Butyl™ R 1551 PG has: improved purity (as measured by ash) reduced additives reduced unsaturation improved cure characteristics Benefits: reduced cycle times for curing leading to higher production throughput reduced curatives for resin cured articles improved aging characteristics for a longer lasting product Information provided by Lanxess.
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Physical Properties	Metric	English	Comments

Volatiles	<= 0.30 %	<= 0.30 %
Mooney Viscosity	46 - 56 @Temperature 125 °C	46 - 56 @Temperature 257 °F	(1+8)
Ash	<= 0.10 %	<= 0.10 %

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	14.1 MPa	2050 psi	with optimized cure package
	7.90 MPa @Treatment Temp. 180 °C, Time 173000 sec	1150 psi @Treatment Temp. 356 °F, Time 48.0 hour	Aged, with optimized cure package
Elongation at Break	749 %	749 %	with optimized cure package
	271 % @Treatment Temp. 180 °C, Time 173000 sec	271 % @Treatment Temp. 356 °F, Time 48.0 hour	Aged, with optimized cure package
100% Modulus	4.10 MPa @Temperature 180 °C, Time 173000 sec	595 psi @Temperature 356 °F, Time 48.0 hour	Aged, with optimized cure package
	1.80 MPa @Strain 100 %	261 psi @Strain 100 %	with optimized cure package

Descriptive Properties
Content	>0.03%		Antioxidant (non-staining)
	1.3-1.7 mol%		Unsaturation

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PLANY8649 / 209042

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