Covestro Texin® 990 Thermoplastic Polyurethanes (TPU)

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Covestro Texin® 990 Thermoplastic Polyurethanes (TPU)
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Texin 990 resin is a polyether-based thermoplastic polyurethane with a Shore hardness of approximately 90A. It can be processed by injection molding, extrusion, or blow molding. Properties / Applications Texin 990 resin offers outstanding abrasion resistance, impact strength, toughness, and flexibility. It also exhibits excellent inherent resistance to salt water stress cracking, and hydrolysis. Texin 990 natural color resin complies with FDA food-contact regulations 21 CFR 177.1680 (Polyurethane Resins) and 177.2600 (Rubber Articles Intended for Repeated Use), subject to the limitations of these and any other applicable regulations. In addition, Texin 990 natural color resin is listed under NSF standard 61 for use in potable water applications. Typical applications include belting, hose, seals and gaskets, tubing, cable and hose jackets, athletic soles, casters, film, extruded profiles and miscellaneous molded articles. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.13 g/cc	ASTM D792
Linear Mold Shrinkage, Flow	0.0080 cm/cm @Thickness 2.54 mm	ASTM D955
Linear Mold Shrinkage, Transverse	0.0080 cm/cm @Thickness 2.54 mm	ASTM D955

Mechanical Properties	Original Value	Comments
Hardness, Shore A	90	ASTM D2240
Hardness, Shore D	36	ASTM D2240
Tensile Strength at Break	41.4 MPa	ASTM D412
Tensile Stress at Strain	6.20 MPa @Strain 100 %	ASTM D412
	6.90 MPa @Strain 50 %	ASTM D412
	7.65 MPa @Strain 100 %	ASTM D412
	11.7 MPa @Strain 300 %	ASTM D412
	14.5 MPa @Strain 300 %	ASTM D412
Elongation at Break	520 %	ASTM D412
Flexural Modulus	41.4 MPa	ASTM D790
Compressive Strength	0.700 MPa	2% Deflection; ASTM D 575
	1.70 MPa	5% Deflection; ASTM D 575
	3.10 MPa	10% Deflection; ASTM D 575
	4.50 MPa	15% Deflection; ASTM D 575
	5.90 MPa	20% Deflection; ASTM D 575
	7.20 MPa	25% Deflection; ASTM D 575
	19.3 MPa	50% Deflection; ASTM D 575
Resilience	32	[%], Bayshore; ASTM D2632
	40	[%], Bayshore; ASTM D2632
Tear Strength	87.66 kN/m	Die C; ASTM D624
	96.3 kN/m	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	25 @Load 1.00 kg	[mg] Loss, H-18; ASTM D3489
	25 @Load 1.00 kg	[mg] Loss, H-18; ASTM D3489
Compression Set	13 % @Temperature 23.0 °C, Time 79200 sec	postcured; ASTM D395-B
	13 % @Temperature 23.0 °C, Time 79200 sec	postcured; ASTM D395-B
	20 % @Temperature 23.0 °C, Time 79200 sec	as molded; ASTM D395-B
	35 % @Temperature 70.0 °C, Time 79200 sec	postcured; ASTM D395-B
	37 % @Temperature 70.0 °C, Time 79200 sec	postcured; ASTM D395-B
	75 % @Temperature 70.0 °C, Time 79200 sec	as molded; ASTM D395-B

Thermal Properties	Original Value	Comments
Vicat Softening Point	106 °C	Rate A; ASTM D1525
Brittleness Temperature	>= -68.0 °F	ASTM D746
Glass Transition Temp, Tg	-44.0 °C
	-40.0 °C

Processing Properties	Original Value	Comments
Rear Barrel Temperature	180 - 200 °C	Injection
	182 - 199 °C	Extrusion
	185 - 199 °C	Injection
Middle Barrel Temperature	180 - 205 °C	Injection
	182 - 204 °C	Injection
	185 - 210 °C	Extrusion
Front Barrel Temperature	180 - 210 °C	Injection
	182 - 210 °C	Injection
	185 - 215 °C	Extrusion
Nozzle Temperature	185 - 215 °C	Injection
	188 - 213 °C	Injection
Zone 1	182 - 199 °C	Extrusion
Zone 2	193 - 210 °C	Extrusion
Zone 3	193 - 216 °C	Extrusion
Die Temperature	190 - 215 °C	Extrusion
Melt Temperature	193 - 210 °C	Injection
	202 - 216 °C	Extrusion
Mold Temperature	16.0 - 43.0 °C	Injection
Injection Pressure	6000 - 14000 psi	Injection
Hold Pressure	4000 - 8000 psi	Injection
Back Pressure	<= 200 psi	Injection
	<= 800 psi	Injection
Cushion	<= 0.125 in	Injection
	0.125 - 0.250 in	Injection

Compliance Properties	Original Value	Comments
FDA	Yes

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PCOVEST0986 / 202769

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