Light Stabilizer (HALS)

LS-770(Low Molecular Weight Hindered Amine Light Stabilizer (HALS) )

 

Chemical name: Bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate

 

Introduction: UV-770 is a hindered amine light stabilizer (HALS), is used for polypropylene (tapes, films, thick items), polyethlene (thin and thick items) styrenics (acrylonitrile butadienestyrene,  polystyrene, high impact polysyrene), polyurethane, polyacetaL, polyamide. 

 

Empirical Formula: C28H52O4N2

 

CAS NO: 52829-07-9

 

Physical Properties

Molecular Weight: 481

Appearance: white crystals

Melting Range: 81-85 °C

Flashpoint: >150 °C

Specific Gravity(20 °C ): 1.05 g/cm3

 

Volatility Pure substance; TGA, heating rate 20 °C /min in air

Weight Loss (%)

Temperature °C

0.7

150

0.7

175

1.0

200

2.1

225

7.2

250

19.8

275

 

Solubility At 20 °C (g/100ml solvent)

Solvent

Solubility

Acetone

19%

Chloroform

45%

Ethanol

-

Ethyl Acetate

24%

n-Hexane

5%

Methanol

38%

Methylene Chloride

56%

Toluene

-

Water

<0.01

 

Applications

1.Polypropylene:

ABS: 0.3-0.5wt% based on polymer weight

PS: 0.2-0.3wt% based on polymer weight

HIPS: 0.2-0.3wt% based on polymer weight

2. High density polyethylene: 0.2-0.3wt% based on polymer weigh

3. Polyamide: 0.2-0.3wt% based on polymer weigh

4. Polyester: 0.2-0.3wt% based on polymer weigh

 

Toxicity & Safety

This material is not intended for use in products for which prolonged contact with mucous membranes or abraded skin, or implantation within the human body is specially intended, unless the finished product has been tested in accordance with the Food and Drug Administration and/or other applicable safety testing requirements. Because of wide range of such potential uses, Shinyang,co,Ltd. Is not able to recommend this material as safe and effective for such uses and assumes no liability for any such uses.

 

Storage

The product may be stored up to two years in a sealed container. Containers should be stored in a cool, dry area. Extended storage at elevated temperatures or exposure to direct heat or sunlight could reduce product life. Keep containers sealed when no in use.

 

Handling

In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Protect skin. Prevent contamination of the environment. Avoid dust formation and ignition sources.

 

Packing

LS-770 is available in powder form in a 50 kg (110.2 pound) or a 25kg(55.1 pound) fiber drum, net weight, with an inner PE liner.