Antioxidant UV stabilizer additives guide

1. Polymer degradation and stabilization

Autoxidation may be initiated by heat, high energy radiation such as ultraviolet light, mechanical stress, or through reaction with other impurities. Antioxidant delay the formation of free radical species and hydroperoxides in polymers both during storage and conversion. UV absorbers and hindered amine stabilizers protect polymers from UV light degradation.

2. Polymer antioxidant guide

what are antioxidants?

Antioxidants are used for anti-oxidizing function. Vitamins have anti-oxidation functions. when it comes to industry, certain antioxidants work for the same purpose.  Antioxidants are used to improve polymers’ high-temperature stability and shelf-life.

Polymer antioxidants including hindered phenolic, amine which belongs to the primary antioxidant,  phosphite, thioesters which belongs to the auxiliary group, and blends of a primary with an auxiliary. Typical antioxidant types as follows.

what’s antioxidants’ application and how to choose?

antioxidants are widely used in plastics, rubber, fiber, coatings, polymers and adhesives industry. basically, antioxidants are used in every polymer processing. Effective use temperatures for antioxidants as the photo below.

LinChemical, BASF, Songwon Antioxidants Compare

LinChemical antioxidants are min 99% similar, over half of our domestic customers use our UV stabilizers as a replacement for imports to achieve a competitive edge.

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Linanox 1010Irganox 1010Songnox 1010Anox 20
Linanox 1024Irganox MD 1024Songnox 1024Lowinox MD24
Linanox 1035Irganox 1035Songnox 1035Anox 70
Linanox 1076Irganox 1076Songnox 1076Anox PP18
Linanox 1098Irganox 1098Songnox 1098Lowinox HD-98
Linanox 1135Irganox 1135Songnox 1135Naugard PS48 (liq)
Linanox 1411Irganox B 1411Songnox 311BAnox BB 1411
Linanox 1412Irganox B 1412Songnox 321BAnox BB 1412
Linanox 1520Irganox 1520
Linanox 168Irgafos 168Songnox 1680Alkanox 240
Linanox 1726Irganox 1726
Linanox 1790Irganox 1790Songnox 1790Lowinox 1790Cyasorb 1790
Linanox 215Irganox B 215Songnox 21BAnox BB 021
Linanox 2246Irganox 2246Songnox 2246Lowinox 22M46
Linanox 225Irganox B 225Songnox 11BAnox BB 011
Linanox 245Irganox 245Songnox 2450Lowinox GP-45
Linanox 3114Irganox 3114Songnox 3114Anox IC-14
Linanox 330Irganox 1330 (330)Songnox 1330Anox 330
Linanox 412sIrganox 412sSongnox 4120Lowinox 412s
Linanox 445Naugard 445
Linanox 5057Irganox 5057Songnox L570Naugard PS30
Linanox 565Irganox 565Songnox 5650
Linanox 626Irgafos 126Songnox 626Ultranox 626
Linanox 697Irganox 697Naugard XL-1
Linanox 702Ethanox 702
Linanox 900Irganox B 900Songnox 417BAnox BB 140
Linanox CPLLowinox CPLWingstay L
Linanox DLTDPIrganox PS 800Songnox DLTDPNaugard DLTDP
Linanox DSTDPIrganox PS 802Songnox DSTDPNaugard DSTDP

3. UV stabilizers

what is UV stabilizer?

Except for the heat, products are exposed to light, no matter it’s direct sunlight or light from the lamp. Thus UV protection for polymers is vital,  otherwise, the products could cracking,  yellowing and delamination due to UV light degradation.

UV stabilizer contains two groups, the first is Ultraviolet Light Absorbers, also known as UVA or UV absorber, the second group is Hindered Amine Light Stabilizers which known as HALS or light stabilizers. They are used individually or as blends. UV absorber filters harmful UV light and helps prevent color change and delamination of coatings, adhesives, and sealants.  Types of UV absorbers include benzophenone(UV 531), benzotriazole(UV P, 234, 326, 327, 328, 329), and hydroxyphenyl-triazine which market share is decreasing as the former two increases.

Light Stabilizers trap free radicals once they are formed and are effective in retaining surface properties such as gloss and prevent cracking and chalking of paints. The combination of these two families is highly synergistic.  Hindered amine light stabilizer reaction mode as the photo below.

what is UV stabilizers’ application and which to choose?

UV stabilizers are used in plastics, rubber, coatings, paint, adhesive, polymer, and different resins.

LinChemical, BASF, Songwon UV Stabilizers Compare

Linsorb 1130Tinuvin 1130Songsorb CS 1130
Linsorb 1164Tinuvin 1164Cyasorb UV
Linsorb 234Tinuvin 234Songsorb 2340Lowilite 234Uvinul 3034
Linsorb 312Tinuvin 312SABO STAB
UV 312
Linsorb 320Tinuvin 320
Linsorb 326Tinuvin 326Songsorb 3260Lowilite 26Uvinul 3026
Linsorb 327Tinuvin 327Songsorb 3270Lowilite 27Uvinul 3027
Linsorb 328Tinuvin 328Songsorb 3280Lowilite 28Uvinul 3028
Linsorb 329Tinuvin 329Songsorb 3290Lowilite 29Uvinul 3029
Linsorb 360Tinuvin 360Songsorb 3600
Linsorb 3808SABO STAB UV 91Cyasorb UV
Linsorb 384-2Tinuvin 384-2Songsorb CS 384-2
Linsorb 3853SABO STAB UV 91Cyasorb UV
Linsorb 400Tinuvin 400Songsorb CS 400
Linsorb 531Chimassorb 81Songsorb 8100Lowilite 22Uvinul 3008
Linsorb 571Tinuvin 571
Linsorb 928Tinuvin 928Songsorb CS 928
Linsorb PTinuvin PSongsorb 1000Lowilite 55Uvinul 3033 P
Linsorb 119Chimassorb 119Songlight 1190Lowilite 19
Linsorb 123Tinuvin 123
Linsorb 292Tinuvin 765 (292)Songlight 2920Lowilite 92Uvinul 4092 H
Linsorb 622Tinuvin 622Songlight 6220Lowilite 62Uvinul 5062 H
Linsorb 770Tinuvin 770Songlight 7700Lowilite 77Uvinul 4077 H
Linsorb 783Tinuvin 783Lowilite 6294
Linsorb 791Tinuvin 791Lowilite 7794
Linsorb 944Chimassorb 944Songlight 9440Lowilite 94

4. Selection Guide of antioxidant and UV stabilizers

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