# Antidegradants in DIY Compounds
Human page: https://retifist.com/literature-reviews/liquid-antidegradants-diy-compounds
> **Not a recipe.** phr figures are handbook ranges. More antioxidant is not always better: stain, bloom, and cost trade-offs apply.
## Executive summary
Latex-article degradation cannot be prevented, only retarded.[^1] Drivers: heat, humidity, UV, ozone, oxygen, oils, metals, and stress.[^1] Liquid-latex compounds for wearable film typically budget **0.5–2 phr** antioxidant for thin goods;[^2] Vanderbilt’s antidegradant chapter often lands at **1–2 phr total**.[^3] Amines protect more and discolor; phenolics stain less and protect less.[^4]
Use when compounding a film intended to last past one event. Storage environment: [Aging, Storage, and Care](/literature-reviews/liquid-aging-storage-and-care). Pigment metals: [Pigment and Filler Compounding](/literature-reviews/liquid-pigment-filler-decks#metal-impurities).
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## Retardation
Three oxidative modes run together: chain scission (soft/tack), crosslinking (harden), chemical alteration.[^1]
Crack morphology:[^5]
| Driver | Pattern |
| --- | --- |
| Ozone | Oriented, widespread |
| Flex | Oriented, local to the crease |
| UV | Non-oriented over the irradiated area |
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## Compound budget
Add an efficient antioxidant to most latex compounds, typically **0.5–2 phr**, especially thin-walled products.[^2] Most latex products in Vanderbilt use **1–2 phr total** antioxidant.[^3] Ranges overlap; they are not one recipe.
Amine antioxidants more effective, discolor; phenolics less effective, lower stain.[^4]
Copper protection, when needed: **2 phr total** antioxidant; coarse dispersions leave gaps.[^3] See [Pigment and Filler Compounding](/literature-reviews/liquid-pigment-filler-decks#metal-impurities).
Match package to storage and wear (ozone motors, UV, metal hardware). Do not copy glove-factory phr onto a thin cast panel because a table printed it.
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## Ozone: wax vs PPD
Microcrystalline wax **0.5–1.0 phr**: static ozone barrier after continuous bloom; flex or stretch cracks the bloom.[^6] PPD-type antiozonants (ANTOZITE-class) **≥2 phr**, often **3 phr**, for dynamic ozone; stain dark.[^6] UV-absorber packaging film may cost less than bulk UV absorbers in the article.[^6]
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## Heat stacking
Oxidation rate doubles per about **8.3°C**. Handbook warehouse floor-to-ceiling ~35–60°C in warm months → ceiling stock can age about **8×** floor stock.[^7] Avoid sharp folds; UV through plastic or cellophane discolors exposed faces.[^7]
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## Decision cues
- Budget 0.5–2 phr antioxidant (expect 1–2 phr on many industrial cards) when the film should outlast a single wear.
- Phenolic when stain matters more; amine when protection matters more than color hold.
- Wax for static storage ozone; PPD-class when the piece flexes in ozone. Neither is “more is better.”
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## Endnotes
[^1]: Vanderbilt Latex Handbook — degradation chapter; cannot prevent, only retard; driver list; three oxidative modes.
[^2]: Polymer Latices Vol 3 — Application of Latices — antioxidant use; typical 0.5–2 phr, especially thin-walled goods.
[^3]: Vanderbilt Latex Handbook — antidegradant chapter; most latex products 1–2 phr total; copper protection 2 phr total.
[^4]: Polymer Latices Vol 3 — Application of Latices — amine vs phenolic selection.
[^5]: Vanderbilt Latex Handbook — crack morphology (ozone / flex / UV).
[^6]: Vanderbilt Latex Handbook — wax bloom 0.5–1.0 phr static ozone; PPD ≥2 phr (often 3 phr) dynamic ozone; UV-absorber packaging note.
[^7]: Vanderbilt Latex Handbook — warehouse heat stacking; rate doubles per 8.3°C; packaging folds and UV through film.
Deep dive: Wax bloom vs PPD
Microcrystalline wax 0.5–1.0 phr for a static ozone skin after continuous bloom; stretch cracks the bloom (handbook hours-to-fail series). PPD antiozonants ≥2 phr, often 3 phr, for dynamic ozone; stain dark.[^6]
Deep dive: Warehouse heat
Floor-to-ceiling ~35–60°C; doubling per 8.3°C → ~8× aging ceiling vs floor.[^7] No sharp folds; UV through clear packaging discolors the exposed face.