Óleo de mamona etoxilatos (COE): Structure, Grades and Application Examples

Cuáles son Óleo de mamona etoxilatos?

Óleo de mamona etoxilatos (COE) are producido mediante la reacción de Óleo de mamona — a triglyceride of predominantly ricinÁcido oleico (12-hydroxy-cis-9-octadecenoic acid) — with óxido de etileno under base catalysis. The hydroxyl groups on ricinoleic chains and glycerol backbone serve as initiation sites for EO addition, yielding complex mixtures of etoxilatod triglycerides, diesters, and monoesters with varying EO mole counts.

Óleo de mamona hidrogenado (HCO) etoxilatos use saturated ricinoleic-derived chains and offer higher melting points, improved oxidative estabilidad, and different HLB profiles en comparación con standard COE from natural Óleo de mamona. Both types are classified by total moles of EO per mole of oil — common commercial grades include 25, 30, 36, and 40 EO.

COE belongs to the class of etoxilatod natural oils and is widely referenced in cosmetic INCI nomenclature as PEG Óleo de mamona or polysorbate-related emulsificante systems. Venus fabrica COE and Óleo de mamona hidrogenado etoxilatos for cosmetic, têxtile, leather, and industrial customers. See the full Óleo de mamona etoxilatos product page.

Structural advantages of ricinoleic chemistry

The 12-hydroxyl substituent on the C18 chain introduces polarity and hydrogen-bonding sites absent in linear álcool graxo etoxilatos. This structural feature contributes to:

• Strong solubilization of essential oils, fragrances, vitamin oils, and lipophilic actives in aqueous systems
• Robust O/W Emulsificación of mineral oil, silicone oil, and vegetable triglycerides
• Dispersing capacity for pigments, dyes, and protección de cultivos actives in agroquímico formulaciones
• Lubricating propiedades valued in têxtile spinning and metal drawing auxiliaries

The triglyceride backbone means COE molecules are larger and more sterically hindered than single-chain FAE — affecting interfacial film curvature and emulsion viscosity.

EO mole count and selección de grados

Higher EO grades are solid at ambient temperature and require heating for handling. punto de turbidez and solubilidad en agua increase with EO content. For solubilizing essential oils in aqueous cosmetic bases, COE-36 and COE-40 are standard starting points.

COE versus álcool graxo etoxilato

Application sectors

Cosmetics and cuidado pessoal: COE-40 solubilizes essential oils and perfume oils in toners, shampoos, and bath products. COE-25 and COE-36 emulsify lanolin, mineral oil, and silicone in creams and lotions. Óleo de mamona hidrogenado etoxilatos provide oxidative estabilidad in products containing insaturado oils.

têxtiles: Low-EO COE grades serve as fiber lubricants in spinning and knitting, reducing friction without excessive scorch during heat setting. Higher-EO grades assist in dye bath leveling and dispersing disperse dyes.

Leather: COE emulsifies fatliquoring oils into leather fibers, imparting softness and pliability. Ricinoleic chemistry aids penetration into collagen structure.

agroquímicos: COE disperses actives in emulsifiable concentrates and suspoemulsions. Compatibility with a wide range of pesticide chemistries makes COE a standard emulsificante in EC formulaciones alongside calcium dodecylbenzene sulfonate.

industrial: Pigment dispersion in waterborne coatings, lubricant emulsions for trabajo de metales, and dye dispersantes in paper coloring.

Worked Ejemplos de formulación

Essential oil solubilizer (cosmetic toner):

• 1–3% COE-40 (PEG-40 Óleo de mamona equivalent)
• 0.5% essential oil blend pre-mixed with COE before dilution
• Balance water, preservative, pH 5.0–6.0
• Clear solution when solubilizer-to-oil ratio is optimized (typically 3:1 to 5:1)

O/W hand cream:

• 3% COE-25 as primary emulsificante
• 2% cetyl alcohol as co-emulsificante and bodying agent
• 8% mineral oil or shea butter oil phase
• COE provides stable emulsion with creamy skin feel

têxtile spinning lubricant:

• 5–10% COE, 5 EO diluted to 3–5% active in water
• Applied to polyester or cotton yarn on ring frame
• Low foam; compatible with downstream Lavado when required

agroquímico EC (emulsifiable concentrate):

• 8% COE-36 as emulsificante
• 4% calcium dodecylbenzene sulfonate (anionic co-emulsificante)
• 25% active ingredient (e.g. cypermethrin) in aromatic solvent
• Dilutes to stable O/W emulsion in spray tank at 0.5–1% product concentration

Leather fatliquor emulsion:

• 6% COE-25 emulsificante sulfited fish oil or synthetic fatliquor
• Applied in drum processing for garment leather softness

Formulación and handling notes

High-EO COE grades (36, 40) are waxy solids at room temperature. Pre-melt at 50–60°C before incorporation. Add oil phase to solubilizer with stirring rather than reverse addition for fragrance solubilization — this ensures the oil–COE complex forms before water dilution.

COE is generally compatible with anionic, catiónico, and anfótero co-tensioativos at typical use levels. Electrolyte tolerance is moderate — high salt concentrations may salting-out high-EO grades. Test clarity and phase estabilidad across temperature cycling (5°C to 40°C) for cosmetic products.

Óleo de mamona hidrogenado etoxilatos resist rancidity better than natural COE in formulaciones containing oxidizable co-ingredients. For long shelf-life cosmetic products, HCO etoxilatos are often preferred.

Óleo de mamona: an ancient crop with a modern chemical role

Óleo de mamona is pressed from the seeds of Ricinus communis, a plant native to the Horn of Africa and the Indian subcontinent that has been cultivated for thousands of years — castor seeds have been found in Egyptian tombs dating to around 4000 BCE, and the oil was recorded in ancient Egyptian, Greek, and Indian texts as a lamp fuel, ointment base, and traditional medicine. The seeds themselves contain ricin, a highly toxic protein, but ricin is removed during the oil-pressing and refining process, leaving an edible-grade triglyceride oil safe for industrial and cosmetic use. India remains the world's largest producer of castor seed by a wide margin, with Gujarat state accounting for the majority of global supply — a geographic advantage that has historically supported India's development as a hub for Óleo de mamona derivative Fabricación, including the etoxilação chemistry described in this guide.

What makes Óleo de mamona chemically distinctive among vegetable oils is its unusually high concentration — typically 85–90% — of ricinÁcido oleico, a C18 Ácido graxo bearing a hydroxyl group at the 12-position Además to its single double bond. Most other common vegetable oils (soybean, sunflower, palm) are dominated by ácidos graxos without this hydroxyl functionality. The extra hydroxyl group gives Óleo de mamona and its derivatives a reactive handle beyond the ester linkages of the triglyceride, enabling chemistry — including etoxilação directly onto the ricinoleic hydroxyl Además to the glycerol backbone — that is not available with straight-chain vegetable oils, and explains why Óleo de mamona has long been prized as a versatile feedstock for lubricants, coatings, nylon-11 production, and the tensioativo chemistry covered here.

Fabricación and quality at Venus

Venus Ethoxyethers etoxilatos Óleo de mamona and Óleo de mamona hidrogenado in dedicated pressurized reactors. Quality controls include saponification value, hydroxyl value, punto de turbidez, pH, colour Gardner, and EO mole ratio verification. Residual óxido de etileno and 1,4-dioxane are monitored to customer specification limits.

With 90,000 MT group Fabricación capacity and 30+ years of etoxilação expertise, Venus supplies COE from 3 to 40+ moles EO for cosmetic, têxtile, leather, and agroquímico markets. Related products: etoxilatod alcohols, polysorbates, HLB scale guide, emulsifiable concentrates guide.

Application pages: cuidado pessoal, têxtile chemicals, agroquímicos. Request samples via Contacte con Venus Ethoxyethers.