Pilot stage  ·  Active R&D

The polyester in your “sustainable” fabric almost certainly isn't.

We extract purified terephthalic acid from the worst mixed textile waste on earth - torn, soiled, headed for landfill - and supply it to yarn manufacturers ready to close the polyester loop.

99.6%
VerdiPTA purity - cleaner than industrial-grade virgin
120°C
Water-based, low-energy extraction
Zero
Waste out - residual ~40% becomes VERDiTILES

Polyester recycling barely exists.

The global textile industry produces around 100 million tonnes of fibre a year. Over 60% of that is polyester - petroleum-derived, energy-intensive, and at end-of-life, almost entirely incinerated or landfilled.

Mechanical recycling downgrades quality. Bottle-to-fibre only solves a fraction of the problem. And mixed fabrics - the polycotton blends, the soiled rejects, the torn garments nobody wants - are effectively considered unrecyclable.

That's where we start.
~100M tonnes
Global textile fibre produced each year
60%+
Of that fibre is polyester - petroleum-derived
<1%
Of post-consumer textiles get recycled back into fibre

We extract. We purify. We supply.

Using our patented VerdiCycle process - the same chemo-mechanical chemistry we use for multilayer plastic - we depolymerise post-consumer, rejected mixed textile waste at 120°C, without organic solvents, and recover purified terephthalic acid (TPA): the monomer that polyester is built from.

We then supply that TPA - under the VerdiPTA brand - to yarn manufacturers and material processors working to close the polyester loop.

01

Extract

Chemo-mechanical depolymerisation of mixed textile waste at 120°C, 1-2 ATM, water-based. Same VerdiCycle reactor as our MLP line.

02

Purify

Patent-pending purification step that doesn't use recrystallisation. Critical impurity 4-CBA: below detection.

03

Supply

Purified TPA delivered to yarn manufacturers, fibre producers, and material processors. Ready for polymerisation.

We don't spin yarn. We don't weave fabric. We make the building block that your process needs.

From textile waste to TPA to yarn.

01
Feedstock

The worst textile waste on earth

Torn, soiled, mixed textile waste. Polycotton blends. Garment factory rejects. Material that has no viable end-of-life path today.

Hover for detail ↓

Sources include garment factory trims (~15-20% cutting waste), post-consumer apparel rejected by mechanical recyclers, and soiled rags typically incinerated. Polycotton (poly-cotton blends, 60:40 or 50:50) is notoriously difficult for existing recyclers - we process it as-is.

02
VerdiCycle extraction

Chemo-mechanical depolymerisation

120°C, 1-2 ATM, water-based. No organic solvents. Patent-pending purification - no recrystallisation.

~60% yield as purified TPA. Residual ~40% becomes VERDiTILES. Zero waste.

Hover for detail ↓

Alkaline hydrolysis in aqueous media. Operates at near-atmospheric pressure unlike competing glycolysis or methanolysis routes (which typically need 200-250°C and high pressure). Patent-pending purification avoids energy-intensive recrystallisation while hitting below-detection on 4-CBA.

03
VerdiPTA supply

Yarn-grade purified TPA

Purified terephthalic acid, tested to ASTM D7976 poly-grade spec. Ready for polymerisation into rPET yarn, rPBT, DOTP, or rBHET monomer.

Hover for detail ↓

Currently supplied to pilot partners in 2-50L batches. Polymerisation yields 0.654 dl/g IV - comfortably inside ASTM D7976 yarn-grade window on first attempt. Packaging, logistics and batch documentation handled by our team.

120°C
Process temp
1-2 ATM
Pressure
Water
No organic solvents
Zero
Waste residual

Cleaner than industrial-grade virgin.
From the worst feedstock.

Our first polymerisation attempt hit yarn-grade intrinsic viscosity. That's the bar we're working from.

“Below detection” on the critical impurity. First try.
Metric
Virgin PTA
ASTM D7976
VerdiPTA
Purity
99.5 - 99.9%
99.6%
+
Why it matters Polymerisation-grade TPA needs ≥99.5% purity. Anything lower shows up as yellowing, reduced tensile strength, and batch-to-batch inconsistency in the final yarn. We sit comfortably inside the virgin-grade window - from textile waste feedstock that other processes can't touch.
4-CBA (critical impurity)
25 - 36 ppm
Max 25 ppm
Below detection
+
Why it matters 4-Carboxybenzaldehyde is the impurity that poisons polymerisation catalysts and caps chain length. Even low-ppm residuals prevent yarn-grade molecular weight. Our patent-pending purification drops 4-CBA below instrument detection limits - cleaner than the ASTM D7976 industrial standard. This is the metric that makes or breaks downstream compatibility.
p-Toluic acid
100 - 170 ppm
40 ppm
+
Why it matters p-Toluic acid is a secondary impurity that affects colour and thermal stability. At 40 ppm we're roughly 3-4x cleaner than typical petrochemical virgin PTA. Matters most for applications where whiteness or melt stability are critical - textile yarn, food-contact resins, and optical-grade polyesters.
rPET IV (polymerised)
0.661 dl/g
0.640 ±0.01 (yarn)
0.654 dl/g
+
Why it matters Intrinsic viscosity (IV) directly predicts how the resulting polyester will spin, stretch, and hold its properties. 0.640 ±0.01 is the industry window for yarn-grade rPET. Our first polymerisation run hit 0.654 dl/g - inside the window, first try, no formulation tuning. This is the headline result from a partner's lab, not ours.

Tested in-house at 2L-50L batch scale. Validation at demo-plant level in progress. Click any row to see why the metric matters.

Honest caveat

VerdiPTA is currently at pilot stage. We are scaling from 2L to 50L validated batches towards demo-plant level. Current work: colour correction via optical brighteners, improving crystal consistency, scaling throughput. If you're a yarn manufacturer or material processor interested in early-stage supply partnership, we want to hear from you.

One feedstock.
Four potential applications.

Click a tab to explore each application - market, use cases, partner profile we're looking for.

The big volume play

rPET — Recycled polyester fibre and resin

Polymerising VerdiPTA with MEG yields recycled PET suitable for textile filaments, staple fibre, and packaging resin. This is where closing the polyester loop has the biggest volume impact - every kilogram of yarn spun from textile waste displaces virgin polyester.

We're especially interested in partnerships with polyester spinners, weavers, and brand-direct textile innovation teams in India, Turkey, Vietnam, and Bangladesh.

Market size ~70M tonnes PET / year globally
Key use cases Apparel yarn, staple fibre, bottles, packaging film
Partner we're looking for Polyester spinners, polymerisation partners, yarn manufacturers
Readiness Pilot - 50L batch polymerisation validated
Higher value, lower volume

rPBT — Engineering thermoplastic

PBT (polybutylene terephthalate) is the go-to engineering plastic for automotive connectors, electrical components, and precision-moulded parts. Combining VerdiPTA with BDO yields recycled PBT with virgin-like performance - a material traditionally made entirely from petrochemical feedstocks.

The value density is much higher than rPET, making this commercially attractive even at modest volumes. Early conversations with automotive Tier 1 suppliers are open.

Market size ~1.5M tonnes PBT / year globally
Key use cases Automotive connectors, electrical housings, appliance parts
Partner we're looking for Compounders, automotive Tier 1/2 suppliers, consumer electronics
Readiness Early R&D - polymerisation pathway validated
Regulatory tailwind

DOTP — Non-phthalate plasticiser

DOTP (dioctyl terephthalate) is the leading phthalate-free plasticiser for flexible PVC - flooring, cables, medical tubing, toys, automotive interiors. Demand is growing aggressively as phthalate regulations tighten in the EU, US, and India.

VerdiPTA is a direct drop-in for the DOTP synthesis route. For plasticiser manufacturers, this is a way to offer a genuinely circular, non-phthalate product without changing existing production lines.

Market size ~1.3M tonnes DOTP / year, 6-8% CAGR
Key use cases Flexible PVC - flooring, cables, medical, toys
Partner we're looking for Plasticiser manufacturers, PVC compounders, FMCG packaging
Readiness Pilot - feedstock compatibility confirmed
Modular downstream

rBHET — Monomer feedstock

BHET (bis-hydroxyethyl terephthalate) is the intermediate monomer used by some chemical recyclers for further processing. Supplying VerdiPTA-derived BHET unlocks a modular downstream route where partners can polymerise, re-depolymerise, or reformulate on their own timelines.

Useful for R&D groups, advanced recycling operators, and any partner building a multi-product pipeline from a single TPA source.

Market size Specialty - tied to advanced recycling capex
Key use cases R&D feedstock, advanced recycler inputs, speciality polyesters
Partner we're looking for Chemical recyclers, corporate R&D, materials startups
Readiness Exploratory - on request for pilot partners

Same reactor.
Same chemistry.
Different feedstock.

VerdiCycle isn't a single-trick process. The same chemistry that turns chip packets and sachets into recycled polyolefins also extracts TPA from mixed textiles. We built the textile line into our commercial plant at marginal CAPEX - not as a separate bet, but as proof that the platform scales across waste streams.

EU textile EPR regulations are tightening. Brands are looking for verified, traceable recycled content that actually closes loops - not mass-balance accounting. The supply of truly circular textile feedstock is near zero.

We're working with partners to change that.

Feedstock
Chip packets & sachets
Output
Recycled polyolefins
Feedstock
Mixed textile waste
Output
Purified TPA (VerdiPTA)

Are you working to close the polyester loop?

We're looking for yarn manufacturers, fibre producers, and material processors who want to work with us at the frontier of textile circularity. This is a pilot programme - early, honest, and built on shared R&D. If you have the downstream capability and we have the feedstock, let's talk.

VerdiPTA for textiles is at pilot stage. Performance data reflects lab-validated results at 2L-50L scale. Independent validation and commercial-scale consistency work is ongoing. We share data as it is, not as we'd like it to be.