Polyglycerates

What polyglycerates are

Polyglycerates here means polyglycerol esters and related polyglycerol-based emulsifiers used as non-ionic, often food- and personal-care-friendly, surfactants. They are built from polymerised glycerol esterified with fatty acids, not from ethylene oxide as the main backbone. Dyna Glycols groups them with the ethoxylate catalogue because customers often specify them as mild nonionic emulsifiers alongside polysorbates and PEG esters.

By changing the polyglycerol chain length and the fatty-acid cut (stearic, oleic, palmitic, coconut), the HLB can be moved from water-in-oil to oil-in-water. The products are used as emulsifiers, opacifiers, viscosity builders and co-emulsifiers in creams, bakery-type systems, and technical emulsions that prefer a glycerol ester over an ethoxylate.

How Dyna Glycols manufactures polyglycerates

Polyglycerol is esterified with the named fatty acid under controlled acid value, SAP, hydroxyl value, melting behaviour and colour. The same esterification capability used for glyceryl and sorbitan esters supports these grades.

Customers should specify polyglycerol average degree, fatty-acid type, and whether the product must be suitable for a food-contact or personal-care documentation set. Industrial polyglycerates for technical emulsions are also manufactured.

Typical grades in this range

Grades are defined by polyglycerol chain and fatty-acid ester rather than by EO moles.

• Polyglycerol esters of stearic, palmitic, oleic and coconut fatty acids
• Low-HLB polyglycerates for W/O and co-emulsifier duty
• Higher-HLB polyglycerates for O/W creams and dispersions
• Custom acid value, melting range and colour on request

Where polyglycerates are used

Personal care uses polyglycerates as PEG-free emulsifiers in creams and lotions, often with glyceryl stearate or cetearyl alcohol. Food-adjacent and bakery emulsifier applications use selected polyglycerol esters where ethoxylates are not wanted.

Technical emulsions, pigment dispersions and textile or leather auxiliaries that need a mild nonionic ester can use polyglycerates as an alternative to polysorbates. They also act as crystal modifiers in some fatty systems.

Where a customer is leaving ethoxylated emulsifiers for a “PEG-free” claim, polyglycerates and glyceryl esters are the usual Dyna Glycols pairing to sample together.

How to specify polyglycerates

State polyglycerol degree if known, the fatty acid, target HLB or melting range, and the documentation (industrial vs personal care vs food-adjacent). Share the oil phase so HLB can be matched.

If replacing a named competitor polyglycerol ester, send the SAP, acid value and drop point from that TDS so the first sample is close.

Quality, documents and supply

Lots are released against acid value, SAP, hydroxyl value, melting or drop point, colour and appearance. SDS and COA follow verification. Samples support emulsion and texture tests.

Solid grades should be stored dry and melted uniformly before use. Avoid overheating that darkens the ester or raises acid value.

Practical notes on polyglycerates

Polyglycerates are esters: they can hydrolyse in strong alkali or strong acid over time. Check pH of the finished formula and of any long-hold concentrate.

They are not drop-in replacements for polysorbate 80. HLB, freeze–thaw and flavour or odour will differ. Plan a full emulsion trial, not only a bottle swap.

Low acid value and pale colour matter in creams. Specify Gardner or APHA if the grade is for a white lotion.

Dyna Glycols can co-sample a sorbitan ester and a polyglycerate so the customer can compare PEG-free emulsifier systems on the same oil phase.

Melting range should suit the process: too high and the ester is hard to incorporate; too low and the cream may lack structure. Include process temperature on the enquiry.

For purely industrial wetting, a fatty alcohol ethoxylate is often more efficient. Polyglycerates are chosen when ester chemistry, mildness or a PEG-free claim is the driver.

Ordering and evaluating polyglycerates

Dyna Glycols supports polyglycerates with laboratory samples, current SDS, TDS and COA from the Kandla SEZ manufacturing network. Tell us the intended application, the substrate, the required moles or molecular weight, and any limits on colour, odour, cloud point, hydroxyl value, pH or residual feedstock. A matching catalogue grade of polyglycerates in the Ethoxylates family can then be confirmed, or a custom batch can be planned on the ethoxylation, esterification or related plant.

When you evaluate polyglycerates, send the competitor grade if one exists, the bath or emulsion conditions, and the tests your receiving laboratory will run. Pack options for polyglycerates typically include drums, IBCs and bulk where the viscosity and melting point of the selected grade allow safe handling from the Ethoxylates manufacturing line.

A first order of polyglycerates is easier when the purchase specification lists identity tests, not only a local trade name. Hydroxyl value, saponification value, acid value, cloud point, pH, water, colour and appearance are the numbers the Kandla QA laboratory can lock. If your QC uses a different solvent or a different cloud-point electrolyte for polyglycerates, write that method on the order so the COA speaks the same language.

Custom lots of polyglycerates are quoted after the hydrophobe or acid/alcohol pair, the target analytical window, the annual volume and the pack. Pilot batches are available when a catalogue point in the Ethoxylates range is close but not exact. Once a trial lot is approved, that TDS should be frozen so the tenth delivery of polyglycerates matches the first approved drum.

Storage of polyglycerates should follow the SDS: keep containers closed, protect hygroscopic grades from moisture, and warm high-melt or high-mole grades until uniform before sampling. FIFO rotation protects colour and odour. If a drum of polyglycerates has frozen or separated in transit, homogenise it before charging a batch; do not decant only the liquid layer.

Application advice for polyglycerates is given against the process you describe, not as a universal recipe. Share machine type, temperature, pH, electrolytes, fibre or hide type, and any ban on APEO, formaldehyde or food-contact lists. Dyna Glycols can then sample polyglycerates alone or as a pair with a sister grade from the same Ethoxylates family so compatibility is checked in one evaluation.

Documentation for polyglycerates is issued after a short verification of the company and the exact grade name. SDS covers handling; TDS covers typical properties; COA covers the shipping lot. If a customer audit needs extra tests on polyglycerates (for example residual feedstock, peroxide, formaldehyde or a pharmacopoeia-style identity), list those tests at the enquiry stage so they are built into release rather than added after dispatch.

Export packing and labelling of polyglycerates follow the transport class on the SDS. Regular industrial shipments from the Indian manufacturing network can be scheduled once the grade is approved. For development quantities of polyglycerates, laboratory samples are the correct first step; they let wetting, emulsification, retanning, finishing or textile handle be proven in your own equipment before a bulk campaign is booked on the Ethoxylates plant.