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Product Group
Thermoplastic polyurethane resin (TPU)

SDT Series

Addtime: 2018-1-30

                                         WellthaneTM SDT Series

Description

SDT series TPU are polyester-based solvent based adhesives, supplied in form of white pellets with the characteristic of wide viscosity range, fast crystallization rate, and good adhesion strength to PVC, PU, fabric and genuine leather. 

Application

Footwear, furniture and fabric coatings. 

Properties  Grade

 

Items

Methods

Units

Grade

SDT6006

SDT6010

SDT6020

SDT6030

Solution viscosity

(15% in MEK, 25ºC)

BrookfieldDV2T,spLV-3

mPa·s

300~800

800~1500

1500~2200

2200~3600

Density

ASTMD 792

g/cm3

1.19

1.20

1.20

1.20

Tensile strength

ASTMD 412

MPa

35

38

40

40

Crystallization rate

 

 

Fast

Fast

Fast

Fast

Minimum activation

temperature

 

ºC

55~65

55~65

55~65

55~65

 

 

 

 




































 





Items

Methods

Units

Grade

SDT406

SDT410

SDT420

SDT430

Solution viscosity

(15% in MEK, 25ºC)

Brookfield DV2T,sp LV-3

mPa·s

200~800

800~1500

1500~2500

2500~3600

Density

ASTM D 792

g/cm3

1.16

1.16

1.16

1.16

Tensile strength

ASTM D 412

MPa

30

30

30

30

Crystallization rate

 

 

Very Fast

Very Fast

Very Fast

Very Fast

Minimum activation

temperature

 

ºC

55~65

55~65

55~65

55~65

 













These products can only be ordered in typical quantities. Please contact your sales representative for details.


Solubility

Good solubility in acetone, methyl ethyl ketone (MEK), ethyl acetate, THF, DMF or the mixtures, not soluble in aliphatic olefins and ethanol. Enough agitation when dissolving can decrease the dissolution time dramatically. 

Solutions
SDT series should be dissolved in a closed container with a variable speed mixer. Different mixing processes and solvent/diluents ratios may result in deviation of the final viscosity. 

Packaging
SDT series is packaged in the form of white pellets in paper-plastic bags of 25 Kg net weight (1000 Kg/pallet).

Storage
SDT series should be inspected to assure containers are not broken during transportation. Containers should be stored in a cool and dry environment, and should be brought to room temperature before opening in order to prevent condensation. Once being used, containers with residual materials should be sealed. It is necessary to cover the feed hopper of the processing machine.

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