What "Silleno" LLP does

Silleno LLP is a Kazakhstan-based project company established to build and operate the country's first integrated gas chemical complex, located on a 254-hectare site in the Karabatan industrial zone of the National Industrial Petrochemical Technopark Special Economic Zone, Atyrau Region. The core asset is a 1,250,000 tonnes-per-year polyethylene plant under construction with first commissioning targeted for 2029. Silleno operates as a joint venture whose shareholders include KazMunayGas, China's Sinopec, and Russia's SIBUR, with technology licensed from Lummus Technology, Chevron Phillips Chemical, Univation, and Axens covering ethylene cracking and polyethylene (HDPE and LLDPE) processes. The project is treated as a strategic national initiative and is included in multiple Kazakhstan government strategic documents.

The planned product portfolio spans more than 20 grades of HDPE and LLDPE polyethylene, of which management indicates approximately 40% are premium-grade, targeting applications in construction, healthcare, automotive, agriculture, and consumer goods. Once operational, offtake is intended to serve customers across Kazakhstan, CIS countries, Europe, China, and Turkey, combining domestic import-substitution with export-led sales. Silleno does not currently generate operating revenue as the plant remains under construction; the business model is industrial B2B polyethylene sales to enterprise converters and processors, monetized post-commissioning at prevailing regional price benchmarks.

The company is staffed by approximately 85 employees today, with peak construction workforce reported in the thousands and approximately 800 permanent positions planned during operations. Execution to date has proceeded via a sequence of EPC awards (pyrolysis unit to Tecnicas Reunidas/Sinopec Engineering; polymerization unit to Tecnimont/Sinopec Shanghai) and supporting agreements such as the long-term industrial gases partnership with Air Liquide, alongside a technology training program branded 'TRAiming the Future.' Sources of visibility are limited to press releases, project milestone communications, and government strategic documentation rather than commercial sales reporting.

Name

"Silleno" LLP

Legal name

Silleno Limited Liability Partnership

Website

https://silleno.kz

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

51–100 employees

Short description

Silleno LLP is a Kazakhstan-based project company building the country's first integrated polyethylene complex in the Atyrau region, designed for 1.25 million tonnes per year of HDPE and LLDPE as a joint venture of KazMunayGas, Sinopec, and SIBUR, with commissioning targeted for 2029.

Ownership category

akta.pro rank

Headquarters

HQ city

Atyrau

HQ country

Kazakhstan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Infrastructure, Technology or R&D, Personnel, Operations

Revenue model

1. Polyethylene Product Sales: Sale of polyethylene products (HDPE and LLDPE grades) to domestic and export markets. Production capacity of 1,250,000 tonnes per year accounts for approximately 1% of global polyethylene production. Product range includes over 20 grades, with 40% classified as premium-grade.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Silleno LLP is building and will operate the first integrated gas chemical complex in Kazakhstan's Atyrau Region, designed to produce 1.25 million tonnes per year of polyethylene (HDPE and LLDPE) across more than 20 grades, of which 40% are premium-grade. The complex uses ethane feedstock and combines steam cracking (pyrolysis), polymerization, and linear alpha-olefins units licensed from leading international technology providers. The plant is scheduled for commissioning in 2029.

Product overview

Silleno LLP is constructing and will operate the first integrated gas chemical complex in Kazakhstan's Atyrau region. The core product is polyethylene with a planned production capacity of 1.25 million tonnes per year. The product portfolio includes over 20 grades of polyethylene (HDPE and LLDPE), with 40% classified as premium-grade products. Raw material is approximately 1.6 million tonnes per year of ethane. Target markets include Kazakhstan, CIS countries, Europe, China, and Turkey. The facility utilizes steam cracking (pyrolysis) technology from Lummus Technology, polymerization technology from Chevron Phillips Chemical and Univation, and Linear Alpha-Olefins technology from Axens. The project is being implemented during 2022-2029 with temporary employment of approximately 15,000 people during construction and over 800 permanent positions during operation.

Differentiator

Problem solved

Functional benefit

Products and services

• HDPE (High-Density Polyethylene) High-density polyethylene (HDPE) is a premium polymer product to be produced at Silleno's facility, part of a planned portfolio of more than 20 polyethylene grades with 40% classified as premium-grade. Targeted at industrial manufacturers across construction, healthcare, automotive, agriculture, and consumer goods sectors.
• LLDPE (Linear Low-Density Polyethylene) Linear low-density polyethylene (LLDPE) is a polymer product category included in Silleno's planned product range of more than 20 polyethylene grades, serving industrial manufacturers in construction, healthcare, automotive, agriculture, and consumer goods sectors.

Quantifiable outcome

• Production capacity: 1.25 million tonnes of polyethylene per year
• +4 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core and major.

• Air Liquide Karabatan Tech Gases LLPcoreStrategic or Co-development Partner · 24 June 2026Long-term agreement for supply of nitrogen and compressed dry air to the polyethylene plant. Air Liquide will build and operate two air separation units with 70 million euro investment. Facility will be among largest industrial gas complexes in Central Asia, scheduled to commence supplies by end of 2028.
• Tecnimont S.p.A. (Italy) + SINOPEC Shanghai Engineering Co. (China)coreImplementation/ SI/ Consulting Partner · 29 May 2025EPC contractor consortium for polymerization unit and utilities, infrastructure and offsite facilities. EPC contract signed May 29, 2025.
• Tecnicas Reunidas (Spain) + Sinopec Engineering Incorporation (China)coreImplementation/ SI/ Consulting Partner · 18 September 2024EPC contractor consortium for pyrolysis unit (ethylene production). EPC contract signed September 18, 2024. First pile driving ceremony held March 31, 2025.
• BI Industrial LLPmajorImplementation/ SI/ Consulting PartnerEarly construction works contractor responsible for site grading, earthworks, construction of on-site and off-site roads, and other preparatory work
• AtyrauNefteMash LLPmajorStrategic or Co-development PartnerLocal Kazakh manufacturer producing major equipment including the ethylene fractionator (101.8m height, 7.5m diameter, 1,500 tons), quench tower (700 tons), and deaerator (145 tons). Represents key local content development for the project.
• Air Liquide Munay Tech Gases LLP (ALMTG)majorStrategic or Co-development PartnerParent company of Air Liquide Karabatan Tech Gases LLP; joint venture between Air Liquide (75%) and KazMunayGas (25%) established in 2016

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• SABIC: SABIC is a Saudi Arabia-headquartered global petrochemical leader producing polyethylene, polypropylene, and other polymers on a world-scale basis. Comparable in polyolefin product range and global export positioning, though materially larger and more diversified.
• ExxonMobil Corporation: ExxonMobil is one of the world's largest petrochemical producers with integrated steam crackers and PE/PP plants globally. Comparable in ethane-cracking polyolefins business, though within a much broader integrated energy portfolio.
• LyondellBasell Industries: LyondellBasell is one of the world's largest polyethylene producers with technologies including Hyperzone PE and Hostalen ACP, operating globally. Comparable in polyolefin product portfolio and licensed technology model.

Direct peers

• Sinopec Group: Sinopec is a 30% JV parent of Silleno and one of the world's largest petrochemical conglomerates, producing olefins, polyolefins (PE/PP), and aromatics via integrated refining-petrochemical complexes. Directly comparable in ethane-to-polyolefins integration and global scale.
• INEOS Group: INEOS is a major global polyethylene and polypropylene producer operating ethane crackers and polymerization units in Europe and the US, with INNOVENE PE technology. Comparable in steam-cracking polyolefin business model and European export positioning.
• Braskem SA: Braskem is the largest petrochemical producer in the Americas and a global polyethylene producer (HDPE, LLDPE, UHMWPE) using both sugarcane and fossil feedstocks. Comparable in integrated cracker-to-PE operations and grade diversity.
• Borouge PLC: Borouge is an integrated polyolefins producer (ADNOC/Borealis JV) operating world-scale ethane cracker and polyethylene/polypropylene plants in Abu Dhabi, producing HDPE, LLDPE, and specialty grades. Directly comparable as a mega-scale integrated gas-to-polyolefins complex with premium grade mix.
• Chevron Phillips Chemical Company: Chevron Phillips Chemical licenses polymerization technology to Silleno and is itself a major global producer of HDPE, LLDPE, and normal alpha olefins. Comparable in PE/LAO production and technology licensing model.
• SIBUR Holding PJSC: SIBUR is a 30% JV parent of Silleno and Russia's largest petrochemicals producer, manufacturing polyethylene, polypropylene, and elastomers via steam cracking and polymerization. Directly comparable product portfolio, technology stack, and integrated gas-chemical business model.

Others

• KazMunayGas National Company JSC: KazMunayGas is the 40% JV parent of Silleno and Kazakhstan's national oil and gas company supplying the ethane feedstock from Kashagan and Karachaganak. Upstream-of and partner-to Silleno rather than a polyolefin competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights8 records

Customer concentration

• YouTubeyoutube.com/@silleno_llp
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• Instagraminstagram.com/silleno_llp

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about "Silleno" LLP