Light Stabilizer-944 CAS 70624-18-9 – Bild 2

Light Stabilizer-944 CAS 70624-18-9

CAS:70624-18-9
MF:(C35H66N8)n=4-5
MW:708.34
EINECS:274-570-6
Synonyme:Foto-stabilizer944; HinderedAmineLightStabilizerHs-944; ACETOSTABUV-944; HS-944; 6-hexanediamine,n,n'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-polymerwith2

What is Light Stabilizer-944 CAS 70624-18-9？

UV-944, also known as light stabilizer HS-944, is white to light yellow particles or powder, melting point 100-135°C, molecular weight 2000-3100, with excellent compatibility, extraction resistance and low volatility. Since UV-944 is a high relative molecular mass stabilizer, and the molecule contains only a large amount of methylate, it is stable when treated with hot oxygen.

UV 944 (CAS 70624-18-9), also known as Chimassorb 944 or UV Absorber 944, is a high-performance hindered amine light stabilizer (HALS) widely used in plastics, coatings, and polymer materials to protect against UV-induced degradation.

Spezifikation

Element	Spezifikation
Lichtdurchlässigkeit	≥93% （425nm） ≥95% （450nm）
Molekulare Gewicht	2000-3100 g/mol
Schmelzpunkt	110-130oC
Dichte	1.05 g/cm3
Volatile	≤0.5%
Ash	≤0.1%

Key Features

1. Excellent light stabilization effect: UV-944 can effectively protect polymer materials from ultraviolet light exposure and photodegradation and thermal degradation caused by long-term thermal aging. Its light stabilization effect far exceeds that of ultraviolet absorbers and nickel-containing stabilizers, especially in pigment systems where the effect is more obvious.

2. Good compatibility and processing performance: It is a light yellow transparent granular material with low volatility. It has good compatibility with various polymer materials such as PP, LDPE, HDPE, and PVC. It can be easily dispersed in the polymer matrix without affecting the transparency and color of the resin, and has excellent processing performance.

3. Wide application range and safe and reliable: UV-944 is suitable for various forms of materials such as films, fibers, and thick products, and can be used for multiple polymers including polyolefins, polyurethanes, and polyamides. Meanwhile, it has been approved by the FDA and can be used in food contact applications, demonstrating a certain level of safety.

Anwendungen

Plastics: Protects films, sheets, and molded products from UV aging.
Coatings and Paints: Enhances color retention and durability under sunlight.
Polymer Materials: Applied in industrial polymers to extend service life and performance.