Anti-aging agents

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Anti-aging agents are chemical substances that are added to other substances or substance mixtures in order to protect the latter from undesired aging processes or to delay aging. Anti-aging agents are among the additives.

Basic structures

Surname Structural formula
Butylated hydroxytoluene (BHT)
Butylated hydroxytoluene (BHT) Structural Formula V1.svg
Benzotriazole
Benzotriazole ChemDraw.svg
2,2,6,6-tetramethylpiperidine
2,2,6,6-tetramethylpiperidine structural formula, svg

Use in natural and synthetic rubber

In the vulcanization, it is the rubber to anti-aging agents, the by heat, light, ozone - caused, oxygen and heavy metal exposure to adverse aging processes of rubber products to delay. In the rubber industry, for example, substituted phenols [examples: 2,6-di- tert- butyl-4-methylphenol (BHT), 2,2'-methylene-bis (4-methyl-6- tert- butyl-phenol) and 2 , 2'-methylenebis (4-methyl-6-cyclohexyl-phenol)], diarylamines, substituted p - phenylenediamines or heterocyclic mercapto compounds (examples: 2-mercaptobenzimidazoleand methyl-2-mercaptobenzimidazole ) are used as anti-aging agents.

Surname CAS number Trade names Structural formula
2,2′-methylenebis (4-methyl-6- tert- butylphenol) 119-47-1 Vulkanox BKF, Anti Ox, LOWINOX 22M46 Vulkanox BKF structural formula.svg
2,2'-methylenebis (4-methyl-6-cyclohexylphenol) [2,2'-methylenebis (6-cyclohexyl- p -cresol]) 4066-02-8 Vulkanox ZKF 6,6'-methylenebis (2-cyclohexyl-4-methylphenol) 100.svg
Butylated hydroxytoluene (BHT) 128-37-0 Vulkanox BHT Butylated hydroxytoluene (BHT) Structural Formula V1.svg

Use in plastics and lubricants

Similar antioxidants , antiozonants, light stabilizers, etc., are used to protect plastics, lubricating oils and greases from undesirable effects of aging . These often act as free radical scavengers and are grouped under the collective names "stabilizers" or "additives". Organozinc compounds (zinc dialkyldithiophosphonates) are sometimes used as antioxidants. The sterically hindered amines ( HALS ) are based on 2,2,6,6-tetramethylpiperidine .

Surname CAS number Trade names Structural formula
PAO-1 2082-79-3 ADK STAB AO-50, Anox PP-18, Dovernox 76, Irganox 1076 PAO-1 100.svg
PAO-2 6683-19-8 ADK STAB AO-60, Anox 20, Dovernox 10, Hostanox O10, Irganox 1010 PAO-2 100.svg
32509-66-3 Hostanox O3 Hostanox O 3rd svg
PAO-3 90498-90-1 ADK STAB AO-80, Sumilizer GA80 PAO-3 100.svg
PAO-4 40601-76-1 Cyanox 1790, Irganox 3790, Lowinox 1790 PAO-4 100.svg
PAO-5 27676-62-6 ADK STAB AO-20, Alvinox FB, Cyanox 1741, Dovernox 3114, Irganox 3114, ANOX IC-14 PAO-5 100.svg
Vitamin E ( tocopherol ) 10191-41-0 Irganox E201, Ronotec 201 DL-all-rac-alpha-tocopherol 100.svg
AA-1 10081-67-1 MileOx 445, Dusantox 86, Naugard 445, Nonflex DCD AA-1 100.svg
BF-1 181314-48-7 HP-136 3,4-dibutyl-5- (2,4-dimethylphenyl) benzofuran-2 (3H) -one 100.svg
HA-1 143925-92-2 Fiber rod, FS-042, Irgastab FS042 N, N-dioctadecylhydroxylamine 100.svg
P-1 31570-04-4 ADK STAB 2112, Alkanox 240, Alvinox P, Doverphos S480, Hostanox PAR24, Irgafos 168 P-1 100.svg
P-2 119345-01-6 Alkanox 24-44, Irgafos PEPQ, Sandostab PEPQ, Hostanox P-EPQ P-2 100.svg
P-3 26741-53-7 Alkanox P-24, Irgafos 126, Ultranox 626 P-3 100.svg
S-1 693-36-7 Cyanox STDP, Hostanox SE4, Irganox PS802 Dioctadecyl 3,3'-thiodipropanoate 100.svg
Dioctadecyl disulfide 2500-88-1 Hostanox SE10 1,2-dioctadecyldisulfane 100.svg
UVA-BP-1 1843-05-6 Milestab 81, Chimassorb 81, Cyasorb UV-531, Uvasorb 3C, Uvinul 3008 UVA-BP-1 100.svg
UVA-2 25973-55-1 Tinuvin 328, Cyasorb UV-2337, Uvinul 3028, UV-328 UV absorber UV-328 100.svg
UVA-3 3896-11-5 Milestab 326, Tinuvin 326, Uvinul 3026 Bumetrizole 100.svg
UVA-BZT-1 147-75-9 Milestab 329, Cyasorb UV-5411, Lowilite 29, Sumisorb 709, Tinuvin 329, Uvinul 3029 Octrizole 100.svg
3864-99-1 Uvinul 3027 Uvinul 3027 100.svg
Drometrizol 2440-22-4 Milestab P, Tinuvin P, Uvinul 3033 P Drometrizole 100.svg
Drometrizole trisiloxane 155633-54-8 Drometrizole Trisiloxane 100.svg
70321-86-7 Milestab 234, Uvinul 3034, Tinuvin 234, UV-234 UV234 100.svg
UVA-HTZ-1 / UVA-4 2725-22-6 Milestab 1164, Cyasorb UV-1164 Ultraviolet Absorbent UV-1164 100.svg
UVA-HTZ-2 147315-50-2 Milestab 1577, Tinuvin 1577 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5- (hexyloxy) phenol 100.svg
Ni-1 14516-71-3 Milestab 1084, Cyasorb UV-1084, Lowilite Q84, Uvasorb NI UV-1084 100.svg
HALS-11: 2,2,6,6-tetramethyl-4-piperidinol 2403-88-5411 2,2,6,6-tetramethyl-4-piperidinol.svg
LMW-HA (L) S-1: bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate 52829-07-9 ADK STAB LA-77, Lowilite 77, Sanol LS770, Tinuvin 770, Uvasorb HA77, Uvinul 4077 H LMW-HA (L) S-1 100.svg
LMW-HA (L) S-2 167078-06-0 (24860-22-8) Cyasorb UV-3853, (Dastib 845) 2,2,6,6-tetramethylpiperidin-4-yl stearate 100.svg
LMW-HA (L) S-3 124172-53-8 Milestab 4050, Uvinul 4050 H LMW-HA (L) S-3.svg
HMW-HA (L) S-1 65447-77-0 Cyasorb UV-3622, Lowilite 62, Tinuvin 622, Uvinul 5062 H Light Stabilizer 622 100.svg
HMW-HA (L) S-2 71878-19-8 (and 70624-18-9) Chimassorb 944, Lowilite 94 HMW-HA (L) S-2 100.svg
HMW-HA (L) S-3 82451-48-7 Cyasorb UV-3346 HMW-HA (L) S-3 100.svg
HMW-HA (L) S-4 106990-43-6 ADK STAB LA102, Chimassorb 119 HMW-HA (L) S-4 100.svg

See also

Individual evidence

  1. ^ Fritz Röthemeyer, Franz Sommer: Kautschuktechnologie , Carl Hanser Verlag Munich Vienna, 2nd edition, 2006, pp. 338-344, ISBN 978-3-446-40480-9 .
  2. ↑ Otto-Albrecht Neumüller (Ed.): Römpps Chemie-Lexikon. Volume 1: A-Cl. 8th revised and expanded edition. Franckh'sche Verlagshandlung, Stuttgart 1979, ISBN 3-440-04511-0 , p. 145.
  3. ↑ Otto-Albrecht Neumüller (Ed.): Römpps Chemie-Lexikon. Volume 6: T-Z. 8th revised and expanded edition. Franckh'sche Verlagshandlung, Stuttgart 1988, ISBN 3-440-04516-1 , p. 4711.
  4. ^ Clariant Ltd. Basel: Hostanox® O 3 pills. In: clariant.com. January 30, 2015, accessed January 21, 2019 .