SONGWON Antioxidants and Polymer Stabilizers

Selection and quotation of SONGWON stabilizers: SONGNOX antioxidants, SONGSORB HALS and UV absorbers, OPS blends, SONGXTEND grades and SONGSTAB PVC stabilizers.

SONGNOX Phenolic Antioxidants

SONGNOX primary phenolic antioxidants act as free radical scavengers and protect the finished plastic, fiber or elastomer part. SONGNOX 1010 and 1076 are primary antioxidants for organic polymers, and SONGNOX 1330 suits polyolefin water pipes and BOPP film.

SONGNOX 1010: melting 110–125 °C
SONGNOX 1076: melting 50–55 °C
SONGNOX 1330: melting 241–247 °C
SONGNOX 1330: 36-month shelf life

SONGNOX Phosphite Antioxidants

Secondary phosphite antioxidants act as peroxide decomposers and keep polymer color, especially during processing. SONGNOX 1680 is tris(2,4-di-tert-butylphenyl) phosphite, SONGNOX 6260 and 9228 are pentaerythritol diphosphites, and SONGNOX PQ is a phosphonite for recycled LLDPE.

SONGNOX 1680: melting 181–187 °C
SONGNOX 6260: melting 170–180 °C
SONGNOX 9228: melting above 228 °C
20 kg aluminum coated bags

SONGNOX Thioester and Aminic Antioxidants

SONGNOX DSTDP, DLTDP, DMTDP and DTDTP thioesters decompose and neutralize hydroperoxides and protect polymers during heat aging. Aminic SONGNOX 5057 is a liquid mixture of butylated and octylated diphenylamine for polyols, flexible slabstock foams, elastomers and hot melt adhesives.

DSTDP: melting 63.5–68.5 °C
DLTDP: melting 38–41 °C
SONGNOX 5057: 200–500 mPa·s at 40 °C
SONGNOX 5057: 24-month shelf life

SONGSORB HALS Light Stabilizers

SONGSORB hindered amine light stabilizers protect plastics against light. SONGSORB 7700 is a low MW HALS, SONGSORB 2920 is liquid, SONGSORB 9440, 2020 and 6220 are polymeric grades, and SONGSORB 7830 is a 1:1 mixture of 9440 and 6220. HALS are used together with UV absorbers.

SONGSORB 7700: melting 81–85 °C
SONGSORB 9440: softening 100–135 °C
SONGSORB 2020: MW 2600–3400
20 kg PE bags, 500 kg big bags

SONGSORB UV Absorbers

SONGSORB UV absorbers take up UV radiation and dissipate the energy as heat. Benzotriazoles SONGSORB 1000, 2340, 3290 and liquid 5710, triazines 1577 and 1164, benzophenone 8100 and oxanilide 3120 are chosen by polymer; hydroxybenzoates 7120 and 2908 work together with HALS.

SONGSORB 5710: absorbance 300–400 nm
SONGSORB 1577: melting 147–151 °C
SONGSORB 2340: melting 137–141 °C
Liquids: 20 kg and 200 kg drums

SONGNOX Binary Blends and OPS

SONGNOX binary blends combine a phosphite and a phenolic antioxidant: 11B holds SONGNOX 1680 and 1010 at 1:1, 21B at 2:1 and 41B at 4:1. SONGNOX OPS are dust-free pellets with 100% active additives tailored to the customer formulation, with no carrier material.

SONGNOX 11B: 1:1 blend
SONGNOX 41B: 4:1 blend
OPS: 100% active additives
OPS plants: Ulsan, Greiz, Houston

SONGXTEND Application-Specific Stabilizers

SONGXTEND 2721 re-stabilizes recycled polypropylene for automotive interior and under-the-hood parts: 1.2% raised the time to embrittlement at 150 °C from 168 to 1104 h. SONGXTEND 1301 serves EPS and XPS with polymeric flame retardants, SONGXTEND 2124 high heat PP parts.

SONGXTEND 2721: 1104 h at 150 °C
SONGXTEND 2721: 12-month shelf life
SONGXTEND 1301: dust-free granules
11B and 21B for recycled PP

SONGSTAB PVC Stabilizers and Plasticizers

SONGSTAB solid calcium-zinc stabilizers for pipes, fittings and cables, liquid mixed metal stabilizers, methyl, butyl and octyl tin stabilizers, and DOA and TOTM plasticizers. PVC stabilizers come as one pack systems of stabilizers and lubricants.

CZ-SP600: pipes up to 300 mm
CZ-SC900: 105/125 °C cables
CZ-SF400: Vicat 78–80 °C
CZ-SM20: medical applications

Pairing a Phenolic and a Phosphite Antioxidant

A phenolic antioxidant scavenges radicals and protects the finished part, while a phosphite decomposes peroxides and keeps color during processing, so the two are used together.

SONGNOX binary blends fix the ratio in advance: 11B, 21B and 41B hold SONGNOX 1680 and 1010 at 1:1, 2:1 and 4:1, 147B holds SONGNOX 1680 and 1076 at 1:4, and 311B holds SONGNOX 1680 and 3114 in equal parts. For heat aging protection a thioester such as SONGNOX DSTDP or DLTDP is added.

Grades are compared by mass loss: SONGNOX 1010 loses 5% of its mass at 353 °C, SONGNOX 1680 at 286 °C and SONGNOX 9228 at 365 °C.

Light Stabilization: HALS Together with a UV Absorber

A UV absorber takes up UV radiation and dissipates the energy as heat; the manufacturer recommends using HALS and UV absorbers together.

SONGSORB 5710 is a liquid benzotriazole with strong absorbance in the 300–400 nm range, suitable for PU foam, TPU, PVC, PVB, PMMA, PC, EVA and unsaturated polyesters.

SONGSORB B5075 is a liquid blend of a benzotriazole UVA, a HALS and a phenolic antioxidant for polyurethane shoe soles, steering wheels, head and arm rests, instrument and door panels; TPU weathering tests used 1%. Polymeric HALS SONGSORB 9440 and 2020 lose 10% of their mass only at 407 and 431 °C.

Antioxidants for Polyols and Polyurethane Foam

Polyols oxidize during storage and transportation, and the center of a flexible slabstock foam block stays hot for several hours after foaming, which leads to scorching. SONGNOX 5057 is used with the phenolic SONGNOX 1135 or 1076 LQ as a less volatile alternative to BHT.

SONGNOX 5721 is a ready liquid blend of SONGNOX 1135 and 5057 at 2:1 that is easy to incorporate in polyols.

SONGNOX 5057 has a viscosity of 200–500 mPa·s at 40 °C and 50–100 mPa·s at 60 °C and a specific gravity of 0.960–1.000 at 20 °C; it is stored in closed containers at 5–40 °C and stays stable for 24 months.

SONGSTAB Stabilizers for PVC Pipes, Fittings and Cables

SONGSTAB calcium-zinc stabilizers replace lead without major changes to processing machinery. CZ-SP100 is designed for pipes of 300 mm diameter and more, with the lubricant added separately; CZ-SP600 is a one pack system for pipes up to 300 mm, dosed at 3.0–4.0 phr.

For fittings the Vicat softening point depends on the system: tin-boosted CZ-SF600 against silver streaks gives 76–78 °C, tin CZ-SF400 78–80 °C and calcium-zinc CZ-SF300 above 80 °C. For cable compounds CZ-SC320 covers 70 °C, CZ-SC490 90/105 °C at 3.0–6.0 phr and CZ-SC900 105/125 °C at 8.0–15.0 phr.

SONGWON and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of SONGWON and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.