Select from our premium, ISO9001-certified Polyacrylamide (PAM) grades tailored for municipal wastewater, oilfield rheology, and heavy industrial liquid-solid separation.
Established in 2011 within the state-level Free Trade Zone of Qingdao, China, Qingdao Oubo Chemical Co., Ltd. (operating under the internationally recognized O'brien brand) has expanded into one of the world's premier technical manufacturers of synthetic resin polymers. Over the past decade, maintaining a consistent business growth rate of over 10% annually, Oubo Chemical has set standard benchmarks for high-molecular-weight Polyacrylamide (PAM) engineering, solid-liquid separation science, and custom polymer synthesis.
Our manufacturing plant features fully automated continuous polymerization production lines with an annual capacity exceeding 50,000 Metric Tons as of 2018. Rigorously certified under ISO 9001:2008 Quality Management Systems, Oubo Chemical integrates biological monomer synthesis with advanced cross-linking controls. We invest over €200 million annually into research and development, allowing us to pioneer proprietary biological methods for acrylamide monomer synthesis that minimize environmental impact while maximizing shear resistance and thermal stability.
Polyacrylamide (PAM, CAS No. 9003-05-8) is a synthetic, high-molecular-weight, water-soluble resin prepared through the radical polymerization of acrylamide monomers ($CH_2=CH-CONH_2$). While standard linear PAM consists of long, unbranched hydrocarbon chains, Bulk Cross-Linked Polyacrylamide incorporates polyfunctional monomers (such as N,N'-methylenebisacrylamide, MBA) to build three-dimensional covalent networks. This modification fundamentally alters polymer rheology, mechanical shear resistance, and water-swelling mechanics.
Oubo Chemical utilizes patented bio-catalytic enzymatic polymerization. Traditional copper-catalyzed synthesis often leaves trace heavy metal ions and higher levels of unreacted acrylamide monomer (AM). In contrast, our biological enzymatic process converts acrylonitrile into high-purity acrylamide monomer at lower temperatures with zero metal contamination, yielding hyper-high molecular weights (ranging from 6 Million to upwards of 30 Million Daltons) and controlled polydispersity.
Cross-linking introduces structural bridges between linear polyacrylamide chains. By modulating the cross-linker density during aqueous solution polymerization or inverse emulsion polymerization, Oubo creates specialized hydrogel lattices and micro-crosslinked polymer beads that exhibit high viscoelastic behavior under high-shear, high-temperature (HS/HT) reservoir conditions.
| Parameter / Feature | Linear Polyacrylamide (Standard PAM) | Cross-Linked Polyacrylamide (Super-Absorbent / Viscoelastic) |
|---|---|---|
| Molecular Structure | Single long-chain linear macro-molecules | 3D Covalently networked macro-lattice |
| Shear Degradation Resistance | Moderate; susceptible to irreversible shear thinning | Exceptional; reformable viscoelastic network under high shear |
| Thermal Stability (Reservoirs) | Degrades rapidly above 80°C - 90°C | Thermally stable up to 120°C - 140°C with cross-linking stabilizers |
| Primary Industrial Function | Flocculant, Retention Aid, Friction Reducer | Profile Control, Plugging Agent, High-Viscosity EOR, Hydrogel Absorbent |
| Dissolution Kinetics | Completely soluble in water (<60 mins) | Swells into durable hydrogel or structured viscoelastic fluid |
Oubo Chemical manufactures four full families of ionic polyacrylamides to suit varying zeta potential requirements in industrial media:
Copolymerized with acrylamide and acrylic acid monomers. Carries negative charges (-COO⁻). Highly effective in neutral, alkaline, or mineral-rich inorganic suspensions (e.g., mineral tailings, sand washing, municipal wastewater primary clarification).
Copolymerized with cationic monomers (DAC, DMC). Carries positive quaternary ammonium groups. Designed for negatively charged organic solids, municipal sewage sludge dewatering (belt filter press, centrifuge), and paper strength retention.
Homopolymer of acrylamide with near-zero ionicity. Functions primarily through hydrogen bonding. Superior performace in acidic industrial wastewater, soil conditioning, and highly specific textile sizing applications.
The global consumption of Polyacrylamide is experiencing rapid transformation driven by strict zero-liquid discharge (ZLD) mandates, expanding tertiary oil recovery operations, and the demand for rapid mineral processing. Bulk procurement strategies are pivoting toward chemical manufacturers capable of delivering customized molecular weight distributions with verified environmental compliance.
Industrial solid-liquid separation requires rapid settling and large, dense flocs. Oubo APAM and CPAM series accelerate settlement, clarify turbidity, and enhance sludge dewatering efficiency in municipal sewage, tannery, paper, citric acid, vegetable protein, dyeing, and pharmaceutical effluents.
In petroleum production, Polyacrylamide serves as a fluid loss reducer, shale inhibitor, friction reducer, and profile plugging agent. Our polymer flooding grades maintain high mobility control in high-salinity wells, boosting oil recovery efficiency significantly.
Oubo PAM accelerates solid-liquid separation in coal washing, aluminum red mud clarification, and metal tailings extraction (gold, silver, iron, copper, nickel). It optimizes filtration speeds and centrifuging cake dryness, sealing mine pipelines effectively.
Functions as retention aids, anionic trash catchers, paper dispersants, and dry/wet strength agents. Increases short fiber retention rate, improves sheet formation, reduces raw material loss, and clarifies paper mill white water.
Specialized food-grade anionic polyacrylamides assist in sugarcane and sugar beet juice clarification and flotation, ensuring fast mud settling and high-purity juice separation with ultra-low residual monomers.
Serves as a stable textile sizing agent, finishing agent, and fabric treatment component. Also removes complex color dyes and organic pollutants from textile dyeing effluent streams when paired with coagulants.
Oubo Chemical operates a robust international raw material procurement network. Key feedstocks are directly sourced from industry-leading chemical enterprises like SINOPEC and Eni. Every manufacturing batch undergoes rigorous 3-stage Quality Control testing prior to release: monomer purity verification, molecular weight distribution analysis, and application performance testing (dissolution speed & residual monomer measurement).
To safeguard moisture-sensitive polyacrylamide granules during long-distance oceanic freight, we provide specialized multi-layer moisture-proof packaging options tailored to buyer specifications:
Unbranded 25kg multi-wall paper bags with inner plastic liner, ideal for distributor white-labeling.
25kg high-strength woven PE/PP bags featuring complete factory specifications and safety marks.
750kg - 1000kg heavy-duty FIBC super sacks designed for automated dosing plants and mine sites.
Palletized shipment with shrink wrap and protective edge corner boards to ensure 100% transit stability.
As global regulations tighten around residual monomer limits (such as EU REACH and US EPA guidelines), Oubo Chemical is advancing polymer technology through three core strategic pillars:
Through enhanced bio-catalysis and precise post-polymerization extraction, we consistently control unreacted monomer concentrations below 500 ppm (and under 250 ppm for drinking water grades), guaranteeing environmental safety.
Engineering associative polyacrylamides modified with hydrophobic side-chains to provide superior viscosity maintenance in extreme salinity (up to 200,000 ppm TDS) and high temperature petroleum reservoirs.
Full compliance with ISO9001:2008 standards, REACH registration for European exports, and comprehensive SDS/COA documentation accompanying every bulk shipment.
Explore additional bulk polyacrylamide formulations engineered for food processing, paper strength, coal tailings, and specialized textile dyeing applications.
Oubo Chemical